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Flash Flood Warning


Flash Flood Warning
AZC005-210145-
/O.NEW.KFGZ.FF.W.0044.170720T2245Z-170721T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Flagstaff AZ
345 PM MST THU JUL 20 2017

The National Weather Service in Flagstaff has issued a

* Flash Flood Warning for...
  Coconino County in north central Arizona...

* Until 645 PM MST

* At 344 PM MST, Doppler radar indicated thunderstorms producing
  heavy rain over Antelope Creek. Up to one inch of rain has already
  fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Antelope Canyon Near Sr 98 and Antelope Creek Basin.

This includes the following streams and drainages...Antelope Creek.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. Act quickly to protect your life.

Stay away or be swept away. River banks and culverts can become
unstable and unsafe.

&&

LAT...LON 3684 11136 3689 11143 3694 11145 3694 11141
      3692 11134 3687 11130

$$

TPS

Flash Flood Warning
UTC009-210015-
/O.NEW.KGJT.FF.W.0007.170720T2115Z-170721T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Grand Junction CO
315 PM MDT THU JUL 20 2017

The National Weather Service in Grand Junction  has issued a

* Flash Flood Warning for...
  North central Daggett County in northeastern Utah...

* Until 615 PM MDT

* At 313 PM MDT, the public reported thunderstorms producing heavy
  rain and street flooding in Dutch John.
  Additional flash flooding is expected.

* Flash flooding will remain over mainly rural areas of north central
  Daggett County.

This includes Dutch John and U.S. Highway 191 in Utah between mile
markers 388 and 404.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Move to higher ground now. Act quickly to protect your life.

Please report flooding to your local law enforcement agency or the
Grand Junction National Weather Service Office when you can do so
safely.

&&

LAT...LON 4100 10922 4086 10936 4086 10945 4092 10965
      4100 10952

$$

JRP

Flash Flood Warning
COC033-113-202330-
/O.NEW.KGJT.FF.W.0005.170720T2034Z-170720T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Grand Junction CO
234 PM MDT THU JUL 20 2017

The National Weather Service in Grand Junction  has issued a

* Flash Flood Warning for...
  Northwestern Dolores County in southwestern Colorado...
  Western San Miguel County in southwestern Colorado...

* Until 530 PM MDT

* At 231 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area.
  Flash flooding is expected to begin shortly.

* Flash flooding will remain over mainly rural areas of northwestern
  Dolores and western San Miguel Counties.

This includes Colorado 141 between mile markers 25 and 41.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Dry washes and arroyos will begin to flow and quickly become raging
killers in a matter of minutes, even from distant rainfall.

Please report flooding to your local law enforcement agency or the
Grand Junction National Weather Service Office when you can do so
safely.

&&

LAT...LON 3785 10850 3790 10873 3801 10885 3812 10887
      3815 10865 3808 10863 3801 10854

$$

JRP


Flash Flood Watch


Flood Watch
National Weather Service Salt Lake City UT
406 PM MDT Thu Jul 20 2017

UTZ010-012>016-019>021-517-518-210600-
/O.CON.KSLC.FF.A.0003.000000T0000Z-170721T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wasatch Plateau/Book Cliffs-Castle Country-San Rafael Swell-
Sanpete/Sevier Valleys-West Central Utah-Southwest Utah-
Utahs Dixie and Zion National Park-South Central Utah-
Glen Canyon Recreation Area/Lake Powell-Central Mountains-
Southern Mountains-
Including the cities of Scofield, Price, Castle Dale, Emery,
Green River, Hanksville, Manti, Richfield, Delta, Fillmore,
Beaver, Cedar City, Milford, St George, Kanab, Escalante,
Bullfrog, Cove Fort, Koosharem, Fish Lake, Loa, Panguitch,
and Bryce Canyon
406 PM MDT Thu Jul 20 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

The Flash Flood Watch continues for

* Portions of central Utah and southern Utah, including the
  following areas, in central Utah, Castle Country, Central
  Mountains, San Rafael Swell, Sanpete/Sevier Valleys, Wasatch
  Plateau/Book Cliffs, and West Central Utah. In southern Utah,
  Glen Canyon Recreation Area/Lake Powell, South Central Utah,
  Southern Mountains, Southwest Utah, and Utahs Dixie and Zion
  National Park.

* Until midnight MDT tonight

* Scattered showers and thunderstorms will continue to develop
  across central and southern Utah the rest of this afternoon and
  evening. Many of these storms will be capable of producing very
  heavy rainfall, which may result in flash flooding.

* Heavy rainfall can lead to rapid onset of flooding, with some
  of the most prone areas being slot canyons, burn scars,
  normally dry washes, and low water crossings. Water can rise
  quickly downstream of heavy rain, even when the actual
  thunderstorm is many miles away. Rock and mud slides, as well
  as water flowing across roadways, will be possible and could
  locally impact travel.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

For more information from NOAA/s National Weather Service Visit...
http://weather.gov/saltlakecity

Flood Watch
National Weather Service GRAND JUNCTION CO
328 PM MDT Thu Jul 20 2017

COZ003-006>009-011-017-020>022-UTZ022-025-027>029-210600-
/O.CON.KGJT.FF.A.0002.000000T0000Z-170721T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Roan and Tavaputs Plateaus-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Central Gunnison and Uncompahgre River Basin-
Uncompahgre Plateau and Dallas Divide-
Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
Southeast Utah-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
Including the cities of Rio Blanco, Grand Junction, Fruita,
Palisade, Collbran, De Beque, New Castle, Mesa, Parachute, Rifle,
Silt, Eagle, Edwards, Glenwood Springs, Carbondale, Basalt,
Skyway, Montrose, Hotchkiss, Delta, Ridgway, Glade Park, Gateway,
Nucla, Cortez, Dove Creek, Mancos, Durango, Bayfield, Ignacio,
Blanding, Bluff, Mexican Hat, Moab, Castle Valley,
Thompson Springs, Monticello, Canyonlands National Park,
Dead Horse Point State Park, and Fry Canyon
328 PM MDT Thu Jul 20 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MDT
TONIGHT...

THE Flash Flood Watch CONTINUES FOR

* Portions of Colorado and Utah, including the following areas,
  in Colorado, Animas River Basin, Central Colorado River Basin,
  Central Gunnison and Uncompahgre River Basin, Debeque to Silt
  Corridor, Four Corners/Upper Dolores River, Grand Valley, Grand
  and Battlement Mesas, Paradox Valley/Lower Dolores River, Roan
  and Tavaputs Plateaus, and Uncompahgre Plateau and Dallas
  Divide. In Utah, Arches/Grand Flat, Canyonlands/Natural Bridges,
  La Sal and Abajo Mountains, Southeast Utah, and Tavaputs
  Plateau.

* Until midnight MDT tonight

* Scattered to numerous thunderstorms with heavy rain are expected
  over the watch area, continuing through late this evening.


* Flash flooding due to heavy rainfall is possible, especially
  over already saturated soils. Slot canyons, burn scars, and
  normally dry streams, washes and arroyos are most susceptible to
  flash flooding. Water can rise quickly downstream of heavy rain,
  even when a thunderstorm is miles away. Rock and mud slides, and
  high water flowing across roads, are also possible which could
  impact travel. Heavy rainfall is also possible on Friday, with
  the focus shifting towards west-central and southwest Colorado.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

$$

as


Flood Advisory


Flood Advisory
National Weather Service Pueblo CO
458 PM MDT THU JUL 20 2017

COC027-043-210100-
/O.CON.KPUB.FA.Y.0074.000000T0000Z-170721T0100Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fremont CO-Custer CO-
458 PM MDT THU JUL 20 2017

...THE SMALL STREAM FLOOD ADVISORY REMAINS IN EFFECT UNTIL 700 PM MDT
FOR SOUTH CENTRAL FREMONT AND NORTH CENTRAL CUSTER COUNTIES...

At 454 PM MDT, Doppler radar indicated light to moderate rain
remained across the advisory area that will cause small stream
flooding. Between one and two inches of rain has already fallen,
along with pea to 1/2 inch diameter hail.

Some locations that will experience flooding include...
areas east and southeast of Texas Creek south of US Highway 50.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Flood Advisory means stream flows are elevated, or ponding of
water in low areas is occurring or is imminent.

&&

LAT...LON 3845 10536 3822 10530 3822 10554 3845 10559

$$

TLM

Flood Advisory
National Weather Service Grand Junction CO
454 PM MDT THU JUL 20 2017

COC107-210200-
/O.NEW.KGJT.FA.Y.0015.170720T2254Z-170721T0200Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Routt CO-
454 PM MDT THU JUL 20 2017

The National Weather Service in Grand Junction has issued a

* Urban and Small Stream Flood Advisory for...
  Southeastern Routt County in northwestern Colorado...

* Until 800 PM MDT

* At 453 PM MDT, Doppler radar indicated heavy rain due to
  thunderstorms. This will cause urban and small stream flooding in
  the advisory area.

* Some locations that will experience flooding include...
  Oak Creek, Yampa and Phippsburg.

This includes the following highways...
 U.S. Highway 40 in Colorado between mile markers 138 and 148.
 Colorado 131 between mile markers 35 and 67.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Do not drive your vehicle into areas where the water covers the
roadway. The water depth may be too great to allow your car to cross
safely. Move to higher ground.

&&

LAT...LON 4042 10670 4007 10683 4005 10702 4023 10702
      4040 10699

$$

NL

Flood Advisory
National Weather Service Grand Junction CO
356 PM MDT THU JUL 20 2017

COC083-210100-
/O.NEW.KGJT.FA.Y.0014.170720T2156Z-170721T0100Z/
/00000.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Montezuma CO-
356 PM MDT THU JUL 20 2017

The National Weather Service in Grand Junction has issued a

* Flood Advisory for...
  North central Montezuma County in southwestern Colorado...

* Until 700 PM MDT

* At 354 PM MDT, Doppler radar indicated heavy rain due to
  thunderstorms. This will cause minor flooding in the advisory area.
  An inch or more of rain has already fallen according to radar
  estimates.

* Some locations that will experience flooding include...
  Areas north of Dolores and Lebanon.

This includes Colorado 145 between mile markers 7 and 13.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 3763 10852 3744 10843 3744 10861 3763 10878

$$

NL


Special Weather Statement


Special Weather Statement
National Weather Service Grand Junction CO
518 PM MDT THU JUL 20 2017

COZ021-UTZ022-210000-
Four Corners/Upper Dolores River CO-Southeast Utah UT-
518 PM MDT THU JUL 20 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL MONTEZUMA COUNTY
UNTIL 600 PM MDT...

At 518 PM MDT, Doppler radar was tracking a strong thunderstorm 13
miles west of Cortez, or 40 miles north of Shiprock, moving west at
20 mph.

Frequent cloud to ground lightning and dime sizehail will be possible
with this storm.

Locations impacted include...
Hovenweep National Monument.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3744 10870 3726 10874 3728 10921 3755 10915
TIME...MOT...LOC 2318Z 100DEG 16KT 3737 10881

$$

NL

Special Weather Statement
National Weather Service Grand Junction CO
514 PM MDT THU JUL 20 2017

UTZ024-025-210000-
Eastern Uinta Basin UT-Tavaputs Plateau UT-
514 PM MDT THU JUL 20 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN UINTAH COUNTY UNTIL
600 PM MDT...

At 513 PM MDT, Doppler radar was tracking a strong thunderstorm 27
miles east of Sunnyside, or 40 miles south of Fort Duchesne, moving
southeast at 25 mph.

Frequent cloud to ground lightning, dime size hail and winds in
excess of 40 mph will be possible with this storm.

This storm will remain over mainly rural areas of southwestern Uintah
County.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3963 11000 3964 11001 3966 10999 3969 10999
      3969 11000 3971 10997 3974 10999 3974 10997
      3972 10995 3977 10992 3979 10993 3979 10988
      3981 10989 3981 10997 3992 10997 3966 10951
      3940 10974 3961 11002
TIME...MOT...LOC 2313Z 301DEG 22KT 3969 10991

$$

MS

Special Weather Statement
National Weather Service Grand Junction CO
507 PM MDT THU JUL 20 2017

COZ007>010-012-013-202345-
Central Colorado River Basin CO-Grand and Battlement Mesas CO-
Debeque to Silt Corridor CO-Flattops CO-
Gore and Elk Mountains/Central Mountain Valleys CO-
West Elk and Sawatch Mountains CO-
507 PM MDT THU JUL 20 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN PITKIN...
NORTHEASTERN MESA AND SOUTHEASTERN GARFIELD COUNTIES UNTIL 545 PM
MDT...

At 506 PM MDT, Doppler radar was tracking a cluster of strong
thunderstorms 17 miles southwest of Carbondale, or 19 miles
southwest of Glenwood Springs, moving northeast at 15 mph.

Frequent cloud to ground lightning, dime size hail and winds in
excess of 40 mph will be possible with this storm.

Locations impacted include...
Glenwood Springs, Carbondale, New Castle, Silt, Shoshone and Cattle
Creek.

This includes the following highways...
 Interstate 70 in Colorado between mile markers 98 and 125.
 Colorado 82 between mile markers 1 and 13.
 Colorado 133 between mile markers 67 and 68.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3919 10745 3937 10780 3971 10750 3953 10704
TIME...MOT...LOC 2306Z 208DEG 13KT 3930 10751

$$

MS

Special Weather Statement
National Weather Service Salt Lake City UT
456 PM MDT THU JUL 20 2017

UTZ010-011-202330-
Wasatch Plateau/Book Cliffs UT-Western Uinta Basin UT-
456 PM MDT THU JUL 20 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CARBON AND
SOUTHEASTERN DUCHESNE COUNTIES UNTIL 530 PM MDT...

At 455 PM MDT, National Weather Service doppler radar indicated a
strong thunderstorm 25 miles south of Myton, or 31 miles south of
Fort Duchesne...moving east at 20 mph.

Another storm is developing to the south of the main storm and may
become strong in the next 10 minutes.

Penny to nickel size hail and winds in excess of 40 mph will be
possible.

This storm will remain over mainly rural areas of northeastern Carbon
and southeastern Duchesne Counties.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If threatening weather approaches, take shelter in a sturdy building.

&&

LAT...LON 3978 10992 3972 10995 3974 10999 3971 10997
      3969 11000 3967 10998 3961 11005 3988 11009
      3992 10998 3981 10997 3979 10993 3980 10992
      3979 10988
TIME...MOT...LOC 2255Z 251DEG 17KT 3983 10997

$$

CRK

Special Weather Statement
National Weather Service Grand Junction CO
455 PM MDT THU JUL 20 2017

COZ003-006-017-202345-
Roan and Tavaputs Plateaus CO-Uncompahgre Plateau/Dallas Divide CO-
Grand Valley CO-
455 PM MDT THU JUL 20 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MESA COUNTY UNTIL
545 PM MDT...

At 454 PM MDT, Doppler radar was tracking a strong thunderstorm 11
miles south of Fruita, or 11 miles southwest of Grand Junction,
moving northeast at 10 mph.

Frequent cloud to ground lightning, half inch hail and winds in
excess of 40 mph will be possible with this storm.

Locations impacted include...
Grand Junction, Fruita, Fruitvale, Clifton, Orchard Mesa, Glade Park
and Redlands.

This includes the following highways...
 Interstate 70 in Colorado between mile markers 15 and 38.
 U.S. Highway 50 in Colorado between mile markers 32 and 38.
 Colorado 141 between mile markers 160 and 162.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall is also occurring with this storm, and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3886 10856 3897 10890 3927 10878 3917 10839
TIME...MOT...LOC 2254Z 209DEG 10KT 3900 10873

$$

MS

Special Weather Statement
National Weather Service Pueblo CO
449 PM MDT THU JUL 20 2017

COZ077-079-081-083-202330-
Wet Mountains between 6300 and 10000Ft CO-
Western/Central Fremont County Below 8500 Ft CO-
Canon City Vicinity/Eastern Fremont County CO-
Teller County/Rampart Range above 7500fT/Pike`s Peak Between 7500 And
11000 Ft CO-
449 PM MDT THU JUL 20 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN FREMONT COUNTY UNTIL
530 PM MDT...

At 446 PM MDT, Doppler radar indicated and trained weather spotters
reported a strong thunderstorm 8 miles south of Royal Gorge moving
northeast at 25 mph.

Half inch hail, heavy rain, and winds in excess of 40 mph will be
likely with this storm.

Locations impacted include...
Royal Gorge and Canon City.

LAT...LON 3826 10530 3841 10544 3859 10496 3835 10495
TIME...MOT...LOC 2246Z 236DEG 23KT 3834 10529

$$

TLM


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service Pueblo CO
1141 AM MDT Thu Jul 20 2017

COZ058>089-093>099-211745-
Western Mosquito Range/East Lake County Above 11000 Ft-
Leadville Vicinity/Lake County Below 11000 Ft-
Eastern Sawatch Mountains above 11000 Ft-
Western Chaffee County Between 9000 and 11000 Ft-
Central Chaffee County Below 9000 Ft-
Western Mosquito Range/East Chaffee County above 9000Ft-
Saguache County West of Continental Divide Below 10000 Ft-
Saguache County East of Continental Divide below 10000 Ft-
La Garita Mountains Above 10000 Ft-
Upper Rio Grande Valley/Eastern San Juan Mountains Below 10000 Ft-
Eastern San Juan Mountains Above 10000 Ft-
Del Norte Vicinity/Northern San Luis Valley Below 8500 Ft-
Alamosa  Vicinity/Central San Luis Valley Below 8500 Ft-
Southern San Luis Valley-
Northern Sangre de Cristo Mountains Between 8500 And 11000 Ft-
Northern Sangre de Cristo Mountains above 11000 Ft-
Southern Sangre de Cristo Mountains Between 7500 and 11000 Ft-
Southern Sangre de Cristo Mountains Above 11000 Ft-
Northwestern Fremont County  Above 8500Ft-
Western/Central Fremont County Below 8500 Ft-
Wet Mountain Valley Below 8500 Ft-
Wet Mountains between 6300 and 10000Ft-
Wet Mountains above 10000 Ft-
Teller County/Rampart Range above 7500fT/Pike`s Peak Between
7500 And 11000 Ft-Pikes Peak above 11000 Ft-
Canon City Vicinity/Eastern Fremont County-
Northern El Paso County/Monument Ridge/Rampart Range Below
7500 Ft-
Colorado Springs Vicinity/Southern El Paso County/Rampart Range
Below 7400 Ft-Pueblo Vicinity/Pueblo County Below 6300 Feet-
Walsenburg Vicinity/Upper Huerfano River Basin Below 7500 Ft-
Trinidad Vicinity/Western Las Animas County Below 7500 Ft-
Crowley County-La Junta Vicinity/Otero County-
Eastern Las Animas County-Western Kiowa County-
Eastern Kiowa County-Las Animas Vicinity/Bent County-
Lamar Vicinity/Prowers County-Springfield Vicinity/Baca County-
1141 AM MDT Thu Jul 20 2017

This hazardous weather outlook is for portions of central...east
central...south central and southeast Colorado.

.DAY ONE...This Afternoon and Tonight

Isolated to scattered thunderstorms will be possible over the
higher terrain this afternoon and early evening. The best chance
of storms will be over the central mountains. Locally heavy rain
will once again be possible, and flash flooding in the Chalk
Bluffs region near Mount Princeton will once again be possible.
Isolated thunderstorms will be possible on the plains adjacent to
the mountains late this afternoon and evening. The best chance of
storms will be over the lower elevations of El Paso county. One
or two of the stronger storms will be capable of wind gusts to 50
mph and nickel size hail.

All storms today will produce dangerous cloud to ground lightning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Scattered afternoon and evening thunderstorms will develop Friday,
mainly over the mountains. The main threats from these storms
will be locally heavy downpours and lightning.

Over the weekend, low level moisture will increase over the plains
and eastern mountains, resulting in better chances for afternoon
and evening thunderstorms. The main threats from these storms will
be locally heavy rain and lightning.

Drier air will move into the region starting Monday. There will
still be enough moisture for afternoon and evening thunderstorms,
mostly over the mountains. The main threats from these storms
will be locally heavy downpours and lightning.

.SPOTTER INFORMATION STATEMENT...

Weather conditions that meet reporting criteria for spotters will be
possible this afternoon and evening in the mountains and adjacent
plains.

$$

31/77

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1055 AM MDT Thu Jul 20 2017

COZ030>051-211700-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 9000 Feet-
South and East Jackson/Larimer/North and Northeast Grand/
Northwest Boulder Counties Above 9000 Feet-
South and Southeast Grand/West Central and Southwest Boulder/
Gilpin/Clear Creek/Summit/North and West Park Counties Above
9000 Feet-Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear
Creek/Northeast Park Counties Below 9000 Feet-
Central and Southeast Park County-
Larimer County Below 6000 Feet/Northwest Weld County-
Boulder And Jefferson Counties Below 6000 Feet/West Broomfield
County-
North Douglas County Below 6000 Feet/Denver/West Adams and
Arapahoe Counties/East Broomfield County-
Elbert/Central and East Douglas Counties Above 6000 Feet-
Northeast Weld County-Central and South Weld County-Morgan County-
Central and East Adams and Arapahoe Counties-
North and Northeast Elbert County Below 6000 Feet/North Lincoln
County-
Southeast Elbert County Below 6000 Feet/South Lincoln County-
Logan County-Washington County-Sedgwick County-Phillips County-
1055 AM MDT Thu Jul 20 2017

This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Scattered thunderstorms will form over the higher terrain and spread
eastward across the Urban Corridor and eastern plains this afternoon
and evening. Most thunderstorms will produce heavy rain and gusty
outflow winds. A few storms could become severe with wind gusts to
60 mph and one inch diameter hail.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

The chance for showers and thunderstorms will remain elevated on
Friday and Saturday, with locally heavy rainfall possible Friday
afternoon through Saturday morning. Slower moving storms Friday
afternoon and evening will have the potential to produce a quick
inch of rain in a very short time, which could lead to localized
flooding. Storms will gradually diminish through the day
Saturday. Thunderstorm chances should drop off even further for
Sunday, Monday and Tuesday with high pressure building in from the
west. By Wednesday, thunderstorms return to the forecast with
temperatures increasing back into the 90s.


.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected to be needed today or tonight.

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
502 AM MDT Thu Jul 20 2017

WYZ101>119-211115-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen County-Central Carbon County-
North Snowy Range Foothills-Southwest Carbon County-
Sierra Madre Range-Upper North Platte River Basin-Snowy Range-
Laramie Valley-South Laramie Range-South Laramie Range Foothills-
Central Laramie County-East Laramie County-
502 AM MDT Thu Jul 20 2017

This hazardous weather outlook is for portions of east central
Wyoming...south central Wyoming and southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Scattered showers and thunderstorms will develop across the
southeastern Wyoming this afternoon lingering into the early
evening hours. A few storms along and east of Interstate 25 north
of Chugwater could become severe with hail to the size of
quarters and wind gusts to near 60 mph. Where slow moving storms
persist today, flooding of small creeks will be possible.  The
storms this afternoon will move from the southwest to the
northeast.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

Showers and thunderstorms will be less numerous over the weekend,
with coverages of afternoon thunderstorms expected to increase
next week.

.Spotter information statement...
timely reports from storm spotters today regarding any observed
severe weather activity would be appreciated.



$$

Hazardous Weather Outlook
National Weather Service Flagstaff AZ
338 AM MST Thu Jul 20 2017

AZZ004>018-037>040-210415-
Kaibab Plateau-Marble and Glen Canyons-Grand Canyon Country-
Coconino Plateau-Yavapai County Mountains-
Northeast Plateaus and Mesas Hwy 264 Northward-Chinle Valley-
Chuska Mountains and Defiance Plateau-
Little Colorado River Valley in Coconino County-
Little Colorado River Valley in Navajo County-
Little Colorado River Valley in Apache County-
Western Mogollon Rim-Eastern Mogollon Rim-White Mountains-
Northern Gila County-Yavapai County Valleys and Basins-
Oak Creek and Sycamore Canyons-Black Mesa Area-
Northeast Plateaus and Mesas South of Hwy 264-
338 AM MST Thu Jul 20 2017

This hazardous weather outlook is for Apache...Coconino...
Northern Gila...Navajo...and Yavapai Counties in Northern
Arizona.

.DAY ONE...Today and Tonight

Look for scattered to numerous showers and thunderstorms from the
Mogollon Rim and White Mountains northward including the Navajo
and Hopi nations. Storms across this area will be capable of wind
gusts in excess of 50 mph and local downpours of around an inch.

South of the Mogollon Rim activity will be isolated to scattered
and tend to remain over and near the mountains. A storm or two
south of the Rim will be capable of producing 2+ inches of
rainfall with flooding still possible as soils remain saturated
in many spots.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Daily thunderstorms will continue into early next week with the
usual day-to-day variations of coverage and intensity.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

$$

Hazardous Weather Outlook
National Weather Service GRAND JUNCTION CO
416 AM MDT Thu Jul 20 2017

COZ001-002-004-005-010-012>014-018-019-023-UTZ023-024-211030-
Lower Yampa River Basin-Central Yampa River Basin-
Elkhead and Park Mountains-Upper Yampa River Basin-
Gore and Elk Mountains/Central Mountain Valleys-
West Elk and Sawatch Mountains-Flat Tops-
Upper Gunnison River Valley-Northwest San Juan Mountains-
Southwest San Juan Mountains-San Juan River Basin-
Eastern Uinta Mountains-Eastern Uinta Basin-
416 AM MDT Thu Jul 20 2017

This hazardous weather outlook is for portions of northwest
Colorado...southwest Colorado...west central Colorado and
northeast Utah.

.DAY ONE...Today and Tonight

Monsoonal moisture remains in place and will bring an increase in
thunderstorm coverage by the afternoon. Localized flooding due to
heavy rainfall rates will become more likely, especially over
areas that are already saturated from recent rainfall. Some
storms will also be capable of producing gusty outflow winds but
every storm will have the potential to create dangerous cloud to
ground lightning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Moisture shifts eastward with potential for heavy rainfall
lasting through Friday. Some drier air works in from the
northwest on Saturday for a downturn in storm activity this
weekend into early next week. Another surge of moisture moves in
by the middle of next week, increasing the thunderstorm coverage.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service GRAND JUNCTION CO
416 AM MDT Thu Jul 20 2017

COZ003-006>009-011-017-020>022-UTZ022-025-027>029-211030-
Roan and Tavaputs Plateaus-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Central Gunnison and Uncompahgre River Basin-
Uncompahgre Plateau and Dallas Divide-
Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
Southeast Utah-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
416 AM MDT Thu Jul 20 2017

This hazardous weather outlook is for portions of northwest
Colorado...southwest Colorado...west central Colorado...east
central Utah and southeast Utah.

.DAY ONE...Today and Tonight

A flash flood watch is in effect for the area this afternoon
through midnight tonight. Monsoonal moisture remains in place and
will bring an increase in thunderstorm coverage by the afternoon.
Flooding due to heavy rainfall rates will become more likely,
especially over areas that are already saturated from recent
rainfall. Some storms will also be capable of producing gusty
outflow winds but every storm will have the potential to create
dangerous cloud to ground lightning.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Moisture shifts eastward with potential for heavy rainfall
lasting through Friday. Some drier air works in from the
northwest on Saturday for a downturn in storm activity this
weekend into early next week. Another surge of moisture moves in
by the middle of next week, increasing the thunderstorm coverage.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Albuquerque NM
353 AM MDT Thu Jul 20 2017

NMZ501>540-211100-
Northwest Plateau-Chuska Mountains-Far Northwest Highlands-
Northwest Highlands-West Central Plateau-West Central Mountains-
West Central Highlands-Southwest Mountains-
San Francisco River Valley-San Juan Mountains-Jemez Mountains-
West Slopes Sangre de Cristo Mountains-
Northern Sangre de Cristos above 9500 feet/Red River-
Southern Sangre de Cristos above 9500 feet-
East Slopes Sangre de Cristo Mountains-Upper Rio Grande Valley-
Lower Chama River Valley-Santa Fe Metro Area-
Middle Rio Grande Valley/Albuquerque Metro Area-
Lower Rio Grande Valley-Sandia/Manzano Mountains-Estancia Valley-
Central Highlands-South Central Highlands-Upper Tularosa Valley-
South Central Mountains-Raton Ridge/Johnson Mesa-
Far Northeast Highlands-Northeast Highlands-Union County-
Harding County-Eastern San Miguel County-Guadalupe County-
Quay County-Curry County-Roosevelt County-De Baca County-
Chaves County Plains-Eastern Lincoln County-Southwest Chaves County-
353 AM MDT Thu Jul 20 2017

This hazardous weather outlook is for portions of northern and
central New Mexico.

.DAY ONE...Today and Tonight

Scattered to numerous thunderstorms are expected to redevelop over
west central to southwestern New Mexico today. Some slow moving
storms could produce locally heavy rainfall this afternoon and into
the evening.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Storms are then expected to become more numerous day-by-day,
spreading farther north and east through the weekend and into early
next week. Storm motions will often remain slow and rainfall could
become locally heavy at times. This may lead to localized areas of
flash flooding. Some of the stronger storms may also produce small
hail and wind gusts to 50 mph.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report rainfall and any flooding through
the National Weather Service Albuquerque web site at weather.gov/abq
or by calling 1.888.386.7637. You can also submit storm reports and
photos on our Facebook page or via Twitter using the hashtag nmwx.

$$

52

Hazardous Weather Outlook
National Weather Service Salt Lake City UT
316 AM MDT Thu Jul 20 2017

UTZ001>016-019>021-517-518-WYZ021-211100-
Cache Valley/Utah Portion-Northern Wasatch Front-
Salt Lake and Tooele Valleys-Southern Wasatch Front-
Great Salt Lake Desert and Mountains-Wasatch Mountain Valleys-
Wasatch Mountains I-80 North-Wasatch Mountains South of I-80-
Western Uinta Mountains-Wasatch Plateau/Book Cliffs-
Western Uinta Basin-Castle Country-San Rafael Swell-
Sanpete/Sevier Valleys-West Central Utah-Southwest Utah-
Utahs Dixie and Zion National Park-South Central Utah-
Glen Canyon Recreation Area/Lake Powell-Central Mountains-
Southern Mountains-Southwest Wyoming-
316 AM MDT Thu Jul 20 2017

This Hazardous Weather Outlook is for the western two thirds of
Utah and southwest Wyoming.

.DAY ONE...Today and Tonight

Showers and thunderstorms will form across much of the outlook
area again today. Heavy rain will be a possibility, leading to an
increased threat of flash flooding, especially along prone
drainages in southern and central Utah.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Drier air will spread into northern Utah Friday into Saturday,
but moisture will remain in place across southern through east-
central Utah where showers and thunderstorms will continue. Sunday
will likely be drier across most of the area.

More significant moisture will return to the entire outlook area
starting Monday, bringing an increased chance of showers and
thunderstorms for the first half of next week. Some of these
storms may produce heavy rainfall.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

$$

For more information from NOAA/s National Weather Service visit...
http://weather.gov/saltlakecity

For information on potential road travel impacts visit...
http://www.udottraffic.utah.gov/roadweatherforecast.aspx

Hazardous Weather Outlook
National Weather Service Riverton WY
221 AM MDT Thu Jul 20 2017

WYZ001>020-022>030-211100-
Yellowstone National Park-Absaroka Mountains-Cody Foothills-
North Big Horn Basin-Southwest Big Horn Basin-
Southeast Big Horn Basin-Owl Creek and Bridger Mountains-
Bighorn Mountains West-Bighorn Mountains Southeast-
Northeast Johnson County-Southeast Johnson County-
Teton and Gros Ventre Mountains-Jackson Hole-
Wind River Mountains West-Wind River Mountains East-
Upper Wind River Basin-Wind River Basin-Lander Foothills-
Green Mountains and Rattlesnake Range-
Natrona County Lower Elevations-Casper Mountain-Star Valley-
Salt River and Wyoming Ranges-Upper Green River Basin Foothills-
Upper Green River Basin-South Lincoln County-
Rock Springs and Green River-Flaming Gorge-East Sweetwater County-
221 AM MDT Thu Jul 20 2017

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

Isolated to widely scattered afternoon and evening thunderstorms.
Heavy rain, hail and strong gusty wind are possible with any
storm. The best chance of strong storms will be in Natrona and
Johnson Counties.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Friday...Isolated thunderstorms across the south.

Monday through Wednesday...Isolated to scattered afternoon and
evening thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Spotters are urged to report wind gusts over 45 mph, hail and any
flooding. Thank you.

$$


Short Term Forecast


Short Term Forecast
National Weather Service Salt Lake City UT
403 PM MDT Thu Jul 20 2017

UTZ010>014-021-517-518-202345-
Wasatch Plateau/Book Cliffs-Western Uinta Basin-Castle Country-
San Rafael Swell-Sanpete/Sevier Valleys-
Glen Canyon Recreation Area/Lake Powell-Central Mountains-
Southern Mountains-
403 PM MDT Thu Jul 20 2017

.NOW...
Scattered showers and thunderstorms will continue to develop and
drift to the north or northeast over portions of central and
southern Utah this afternoon. At 4:00 PM the strongest storms
were located over the mountains in southwest Sanpete and northwest
Sevier counties, and just southeast of Duchesne. Some of these
storms are capable of producing locally heavy rain, small hail,
gusty winds and dangerous lightning.

$$

For information from NOAA/s National Weather Service visit...
http://weather.gov/saltlakecity

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE