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Hazardous Weather Outlook
National Weather Service Riverton WY
203 AM MDT Wed Aug 23 2017

WYZ001>020-022>030-241200-
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-
203 AM MDT Wed Aug 23 2017

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

Elevated fire weather conditions for portions of central and
northern Wyoming today due to very dry conditions. Isolated to widely
scattered afternoon and evening thunderstorms. Some storms may
produce locally heavy rain, small hail, and gusty winds.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thursday and Friday...Isolated to widely scattered afternoon and
evening thunderstorms. Some storms may produce locally heavy rain,
small hail, and gusty winds.

Saturday through Tuesday...A slight chance of late day thunderstorms
over the northern mountains each day.

.SPOTTER INFORMATION STATEMENT...

Spotters are urged to report hail and wind gusts over 45 mph.

$$

Team Riverton

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1020 AM MDT Tue Aug 22 2017

COZ030>051-231630-
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-
1020 AM MDT Tue Aug 22 2017

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

.DAY ONE...Today and Tonight

Scattered thunderstorms will develop across the high country by
this afternoon, with the highest coverage expected across the
Front Range Mountains and Foothills, and Park County. On the
plains, the airmass will be more stable, but isolated storms near
the Denver metro area cannot be ruled out with the aid of a
Denver convergence zone. At this time, this is expected to set up
across the Denver metro area allowing for a few isolated
thunderstorms by late afternoon and evening. Primary impacts from
the storms will be cloud-to-ground lightning and gusty winds.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Thunderstorms will increase in coverage Wednesday with activity
peaking Thursday as more subtropical moisture pushes into the
area. The stronger storms may produce heavy rainfall, hail, and
gusty winds, but the threat of flooding will be low. Friday
through the weekend will be drier with less thunderstorm
activity.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

Schlatter/Gimmestad

Hazardous Weather Outlook
National Weather Service GRAND JUNCTION CO
430 AM MDT Tue Aug 22 2017

COZ001>014-017>023-UTZ022>025-027>029-231030-
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-
430 AM MDT Tue Aug 22 2017

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

.DAY ONE...Today and Tonight

Scattered thunderstorms will develop over the mountains today with
some cells moving over adjacent valleys during the latter part of
the afternoon and into the evening. The main threat from these
storms is localized heavy rain, lightning and outflow winds to 40
MPH.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Wednesday and Thursday...Scattered to numerous diurnally driven
showers and thunderstorms will continue as moisture lingers.

Friday through Monday...Diurnal thunderstorms will decrease in
coverage as drier air filters over the area.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

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
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