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Flash Flood Watch

Flood Watch
National Weather Service Grand Junction CO
412 PM MDT Thu Jul 29 2021

COZ008-010-013-300615-
/O.CAN.KGJT.FF.A.0023.000000T0000Z-210730T0600Z/
/O.CON.KGJT.FF.A.0024.210730T1700Z-210731T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Central Colorado River Basin-Gore and Elk Mountains/Central Mountain
Valleys-Flat Tops-
Including the cities of Eagle, Edwards, Glenwood Springs,
Carbondale, Basalt, Aspen, Vail, Snowmass, Buford, and Trappers Lake
412 PM MDT Thu Jul 29 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH
FRIDAY EVENING...
...FLASH FLOOD WATCH FOR THE GRIZZLY CREEK FIRE BURN AREA IS
CANCELLED...

The Flash Flood Watch continues for

* Portions of northwest Colorado and west central Colorado,
  including the following areas, in northwest Colorado, Flat Tops.
  In west central Colorado, Central Colorado River Basin and Gore
  and Elk Mountains/Central Mountain Valleys.

* From Friday morning through Friday evening.

* Monsoonal moisture remains entrenched over portions of west
  central Colorado. This includes the Grizzly Creek and Lake
  Christine Fire Burn Areas as well as the Park and Gore Ranges,
  Flat Tops, Elk Mountains and Colorado River Basin and Central
  Mountain Valleys.

* Burn scars will be especially susceptible to heavy rainfall
  leading to quick runoff responses leading to debris and mud flows.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

The Flash Flood Watch for portions of northwest Colorado and west
central Colorado, including the following areas, in northwest
Colorado, Flat Tops. In west central Colorado, Central Colorado
River Basin and Gore and Elk Mountains/Central Mountain Valleys has
been cancelled.

The Flood Watch is replaced with a Flood Warning.

$$



Flash Flood Warning

Flash Flood Warning
COC037-045-300015-
/O.NEW.KGJT.FF.W.0057.210729T2212Z-210730T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Grand Junction CO
412 PM MDT Thu Jul 29 2021

The National Weather Service in Grand Junction has issued a

* Flash Flood Warning for...
  The Grizzly Creek Fire Burn Area in...
  Western Eagle County in west central Colorado...
  East Central Garfield County in west central Colorado...

* Until 615 PM MDT.

* At 412 PM MDT, Doppler radar indicated thunderstorms producing
  heavy rain over the Grizzly Creek Fire Burn Area. The expected
  rainfall rate is 0.8 to 1.3 inches in 1 hour. Flash flooding is
  ongoing or expected to begin shortly.

Excessive rainfall over the burn scar will result in debris flow
moving through the Glenwood Canyon area. The debris flow can consist
of rock, mud, vegetation and other loose materials.

  HAZARD...Life threatening flash flooding. Thunderstorms
           producing flash flooding in and around the Grizzly
           Creek Fire Burn Area.

  SOURCE...Radar.

  IMPACT...Life threatening flash flooding of areas in and around
           the Grizzly Creek Fire Burn Area.

* Some locations that will experience flash flooding include...
  Glenwood Springs and Shoshone.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This is a life threatening situation. Heavy rainfall will cause
extensive and severe flash flooding of creeks...streams...and
ditches in the Grizzly Creek Fire Burn Area. Severe debris flows can
also be anticipated across roads. Roads and driveways may be washed
away in places. If you encounter flood waters...climb to safety.

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

&&

LAT...LON 3965 10722 3967 10720 3965 10713 3962 10712
      3961 10714 3960 10711 3958 10708 3957 10711
      3955 10714 3954 10720 3954 10724 3956 10731
      3963 10729 3963 10726 3964 10725

FLASH FLOOD...RADAR INDICATED
FLASH FLOOD DAMAGE THREAT...CONSIDERABLE
EXPECTED RAINFALL...0.8-1.3 INCHES IN 1 HOUR

$$

15



Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Grand Junction CO
457 AM MDT Thu Jul 29 2021

COZ001>014-017>023-UTZ022>025-027>029-301100-
Lower Yampa River Basin-Central Yampa River Basin-
Roan and Tavaputs Plateaus-Elkhead and Park Mountains-
Upper Yampa River Basin-Grand Valley-Debeque to Silt Corridor-
Central Colorado River Basin-Grand and Battlement Mesas-
Gore and Elk Mountains/Central Mountain Valleys-
Central Gunnison and Uncompahgre River Basin-
West Elk and Sawatch Mountains-Flat Tops-
Upper Gunnison River Valley-Uncompahgre Plateau and Dallas Divide-
Northwest San Juan Mountains-Southwest San Juan Mountains-
Paradox Valley/Lower Dolores River-
Four Corners/Upper Dolores River-Animas River Basin-
San Juan River Basin-Southeast Utah-Eastern Uinta Mountains-
Eastern Uinta Basin-Tavaputs Plateau-Arches/Grand Flat-
La Sal and Abajo Mountains-Canyonlands/Natural Bridges-
457 AM MDT Thu Jul 29 2021

This hazardous weather outlook is for eastern Utah and western
Colorado.

.DAY ONE...Today and Tonight

Showers and thunderstorms will become more widespread today,
beginning over the high terrain by late morning and drifting into
lower elevations late afternoon into the evening. Lightning and
heavy rainfall will be the main threats along with gusty outflow
winds and hail in the stronger storms. Flash flooding is possible
with heavy rainfall over portions of southwest Colorado and
southeast Utah. Storms will continue into the overnight hours.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Daily scattered to numerous showers and thunderstorms can be
expected each day with monsoon moisture entrenched across the
area. Storm activity and coverage looks to increase late this
week into the weekend with better potential for storms to last
through the overnight hours. Moderate to heavy rain, gusty winds
and lightning will be the primary threats with storms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$



U.S. Dept. of Commerce
NOAA National Weather Service
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Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: May 16, 2007
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