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Severe Thunderstorm Warning


Severe Weather Statement
National Weather Service Riverton WY
811 PM MDT WED JUN 28 2017

WYC013-290230-
/O.CON.KRIW.SV.W.0036.000000T0000Z-170629T0230Z/
Fremont-
811 PM MDT WED JUN 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM MDT
FOR EAST CENTRAL FREMONT COUNTY...

At 809 PM MDT, a severe thunderstorm was located 8 miles east of
Riverton, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

The severe gusts to 60 mph are now expected to be east of the
Riverton area including Gas Hills road and in the Sand Draw area.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

&&

LAT...LON 4283 10841 4301 10835 4321 10833 4321 10824
      4315 10769 4269 10779
TIME...MOT...LOC 0209Z 282DEG 24KT 4301 10822

HAIL...<.75IN
WIND...60MPH

$$

21


Severe Weather Statement


Severe Weather Statement
National Weather Service Riverton WY
811 PM MDT WED JUN 28 2017

WYC013-290230-
/O.CON.KRIW.SV.W.0036.000000T0000Z-170629T0230Z/
Fremont-
811 PM MDT WED JUN 28 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM MDT
FOR EAST CENTRAL FREMONT COUNTY...

At 809 PM MDT, a severe thunderstorm was located 8 miles east of
Riverton, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

The severe gusts to 60 mph are now expected to be east of the
Riverton area including Gas Hills road and in the Sand Draw area.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.

&&

LAT...LON 4283 10841 4301 10835 4321 10833 4321 10824
      4315 10769 4269 10779
TIME...MOT...LOC 0209Z 282DEG 24KT 4301 10822

HAIL...<.75IN
WIND...60MPH

$$

21


Red Flag Warning


URGENT - FIRE WEATHER MESSAGE
National Weather Service GRAND JUNCTION CO
801 PM MDT Wed Jun 28 2017

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 200, 202,
203, 207, 290, 292 AND 294, AND UTAH ZONES 486, 487, 490 AND
491...

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY FOR
WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 291,
293 AND 295 BELOW 9000 FEET...

...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING...

.This evenings red flag warnings have expired. Critical fire
weather conditions will return on Thursday. Despite cooler
temperatures, most notably north of the I-70 corridor, RH is
expected to dip below 15 percent for much of the area. Conditions
are expected to improve this weekend through early next week.

COZ200-202-203-207-290-292-294-UTZ486-487-490-491-291015-
/O.EXP.KGJT.FW.W.0014.000000T0000Z-170629T0200Z/
/O.CON.KGJT.FW.W.0015.170629T1800Z-170630T0200Z/
Little Snake Forecast Area-White River Forecast Area-
Lower Colorado River-Southwest Colorado Lower Forecast Area-
Paradox Valley Forecast Area-North Fork Forecast Area-
Southwest Colorado Upper West Forecast Area-Eastern Uinta Basin-
Book Cliffs-Colorado River Basin-Southeast Utah-
801 PM MDT Wed Jun 28 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 8 PM MDT
THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONES 200, 202, 203, 207, 290, 292, 294, 486, 487, 490 AND 491...
...RED FLAG WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING FOR WIND
AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 200, 202, 203,
207, 290, 292, 294, 486, 487, 490 AND 491...

* AFFECTED AREAS...In Colorado, Fire Weather Zone 200 Little
  Snake Forecast Area, Fire Weather Zone 201 Routt Forecast Area,
   Fire Weather Zone 202 White River Forecast Area, Fire Weather
  Zone 203 Lower Colorado River, Fire Weather Zone 205 Colorado
  River Headwaters, Fire Weather Zone 207 Southwest Colorado
  Lower Forecast Area, Fire Weather Zone 290 Paradox Valley
  Forecast Area, Fire Weather Zone 292 North Fork Forecast Area
  and Fire Weather Zone 294 Southwest Colorado Upper West
  Forecast Area. In Utah, Fire Weather Zone 486 Eastern Uinta
  Basin, Fire Weather Zone 487 Book Cliffs, Fire Weather Zone
  490 Colorado River Basin and Fire Weather Zone 491 Southeast
  Utah.

* WINDS...West 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...4 to 9 percent.

* IMPACTS...Fire starts could lead to quickly spreading fires
  which could be difficult or impossible to control.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are either occurring now, or will shortly. A combination of
strong winds, low relative humidity, and warm temperatures can
contribute to extreme fire behavior.

&&

$$


Special Weather Statement


Special Weather Statement
National Weather Service Riverton WY
800 PM MDT WED JUN 28 2017

WYZ005>007-290245-
Owl Creek and Bridger Mountains-Southeast Big Horn Basin-Southwest
Big Horn Basin-
800 PM MDT WED JUN 28 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL HOT SPRINGS COUNTY UNTIL
845 PM MDT...

At 758 PM MDT, Doppler radar was tracking a strong thunderstorm near
Hamilton Dome, which is 13 miles west of Thermopolis, moving east at
30 mph.

Wind gusts up to 50 mph will be possible with this storm. These wind
can occur well ahead of the main shower or thunderstorm activity.

This strong thunderstorm will be near Thermopolis around 830 PM MDT.


LAT...LON 4360 10857 4378 10858 4384 10793 4358 10791
TIME...MOT...LOC 0158Z 267DEG 25KT 4370 10848

$$

21

Special Weather Statement
National Weather Service North Platte NE
745 PM MDT WED JUN 28 2017

NEZ022-023-035-056-057-290230-
Deuel NE-Grant NE-Arthur NE-Garden NE-Keith NE-
745 PM MDT WED JUN 28 2017

...SPECIAL WEATHER STATEMENT...

At 744 PM MDT, Doppler radar was tracking strong thunderstorms along
a line extending from 17 miles northeast of Oshkosh to Sunol.
Movement was east at 45 mph.

Winds in excess of 30 mph will be possible with these storms.

Locations impacted include...
Ogallala, Chappell, Oshkosh, Arthur, Brule, Lewellen, Keystone,
Kingsley Dam, Lemoyne, Roscoe, Cogill Lake, Green Lake, Mount Vernon,
Bourquim Hill, Three Mile Lake, Eagle Gulch Campground, Ruthon,
Haythorn Lake, Clear Creek State Wildlife Management Area and
Intersection of Highway 27 and 9 Mile Road.

This includes the following highways...
 Highway 61 between mile markers 85 and 137.
 Highway 92 between mile markers 115 and 175.
 Interstate 80 in Nebraska between mile markers 78 and 84, and
between mile markers 120 and 134.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

If on or near Lake McConaughy, get out of the water and move indoors
or inside a vehicle. Remember, lightning can strike out to 10 miles
from the parent thunderstorm. If you can hear thunder, you are close
enough to be struck by lightning. Move to safe shelter now! Do not
be caught on the water in a thunderstorm.

&&

LAT...LON 4130 10261 4161 10216 4183 10144 4109 10157
      4108 10261
TIME...MOT...LOC 0144Z 247DEG 40KT 4160 10213 4117 10276

$$

Power


Hazardous Weather Outlook


Hazardous Weather Outlook...UPDATED
National Weather Service North Platte NE
321 PM CDT Wed Jun 28 2017

NEZ004>010-022>029-035>038-056>059-069>071-094-292030-
Sheridan-Eastern Cherry-Keya Paha-Boyd-Brown-Rock-Holt-Garden-
Grant-Hooker-Thomas-Blaine-Loup-Garfield-Wheeler-Arthur-McPherson-
Logan-Custer-Deuel-Keith-Perkins-Lincoln-Chase-Hayes-Frontier-
Western Cherry-
321 PM CDT Wed Jun 28 2017 /221 PM MDT Wed Jun 28 2017/

This Hazardous Weather Outlook is for portions of western and
north central Nebraska.

.DAY ONE...TONIGHT.

Isolated severe thunderstorms are possible this evening and
overnight, generally south of Interstate 80. Two or perhaps three
rounds of storms may develop in the evening and after midnight.
Damaging winds and large hail are the primary hazards and storm
activity will move from west to east.

Elsewhere, strong to briefly severe thunderstorms are possible,
generally south of Highway 20.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

There is a slight risk for severe thunderstorms Thursday and
Thursday evening mainly along and east of a line from Imperial to
Thedford to Bassett. Large hail and wind damage are the concern.

Strong or briefly severe thunderstorms are also possible Sunday
and Sunday night. The threat for strong or severe weather is
uncertain beyond Sunday night.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed late this afternoon and evening.

&&

Get your weather, hydrological, and climate information at
http://www.weather.gov/northplatte

$$

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1104 AM MDT Wed Jun 28 2017

COZ030>051-291715-
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-
1104 AM MDT Wed Jun 28 2017

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

.DAY ONE...This Afternoon and Tonight

Isolated thunderstorms are expected this afternoon and evening,
mainly over the plains. A few storms could become severe over the
eastern plains with damaging wind gusts and hail up to one inch
in diameter. The mountains and mountain valleys will be dry and
breezy today, which will elevate the fire danger.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Isolated to scattered showers and thunderstorms can be expected
Thursday into Friday with the passage of an upper level trough
and cold front. Cooler temperatures, higher humidities and the
chance for wetting rainfall should reduce the risk of wildfires
both days, particularly on the plains. For the weekend into early
next week, a large high pressure ridge building in from the
Desert Southwest will usher in drier and warmer conditions across
the region. This will again elevate the wildland fire danger,
while significantly reduce the chance for thunderstorms.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$

Hazardous Weather Outlook
National Weather Service GRAND JUNCTION CO
550 AM MDT Wed Jun 28 2017

COZ001>014-017>023-UTZ022>025-027>029-291200-
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-
550 AM MDT Wed Jun 28 2017

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

.DAY ONE...Today and Tonight

Another disturbance will move over northern regions today. A few
showers and storms are possible up north but coverage looks to be
minimal at best. Gusty surface winds are expected again today as
deep mixing allows winds aloft to reach the surface. Like
yesterday, dry fuels and low humidities will remain in place
causing critical fire weather conditions. A Red Flag Warning is in
place this afternoon and evening to account for the fire weather.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

High pressure will build back in Thursday and beyond keeping
precipitation chances low through Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed.

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
444 AM MDT Wed Jun 28 2017

NEZ002-003-019>021-054-055-095-096-291100-
Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne-
North Sioux-South Sioux-
444 AM MDT Wed Jun 28 2017

This hazardous weather outlook is for portions of western
Nebraska.

.DAY ONE...TODAY AND TONIGHT

Scattered thunderstorms will develop across the western Nebraska
Panhandle this afternoon and continue into tonight. Expected
associated hazards with these thunderstorms will be wind gusts of
up to 50 mph.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Thunderstorm chances return again on Thursday and Sunday
afternoons.

.Spotter information statement...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service Cheyenne WY
444 AM MDT Wed Jun 28 2017

WYZ101>119-291100-
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-
444 AM MDT Wed Jun 28 2017

This hazardous weather outlook is for southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Scattered thunderstorms will develop across much of southeast
Wyoming this afternoon and continue into tonight. Expected
associated hazards with these thunderstorms will be wind gusts of
up to 50 mph.

Critical fire danger likely this afternoon across much of the
lower elevations of Carbon County. A Red Flag Warning is in effect
for the Upper North Platte Valley, where fuels have been deemed
critical.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

Thunderstorm chances return again on Thursday and Sunday
afternoons.

.Spotter information statement...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service Rapid City SD
422 AM MDT Wed Jun 28 2017

SDZ024>030-041-042-072-074-WYZ054>058-071-291300-
Northern Black Hills-Northern Foot Hills-Rapid City-
Southern Foot Hills-Central Black Hills-Southern Black Hills-
Custer Co Plains-Fall River-Oglala Lakota-
Sturgis/Piedmont Foot Hills-Hermosa Foot Hills-Northern Campbell-
Southern Campbell-Western Crook-Wyoming Black Hills-Weston-
Northeastern Crook-
422 AM MDT Wed Jun 28 2017

This Hazardous weather outlook is for portions of the Black Hills
of South Dakota...western South Dakota...northeast Wyoming...and
the Black Hills of Wyoming.

.DAY ONE...Today and Tonight

Expected scattered thunderstorms today and tonight. Isolated
severe thunderstorms with marginally severe hail and damaging
winds are possible this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Scattered thunderstorms will occur during the day Thursday, but
organized severe thunderstorms are not expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service Rapid City SD
422 AM MDT Wed Jun 28 2017

SDZ001-002-012>014-031-032-043-046-073-291300-
Harding-Perkins-Butte-Northern Meade Co Plains-Ziebach-
Pennington Co Plains-Haakon-Jackson-Mellette-
Southern Meade Co Plains-
422 AM MDT Wed Jun 28 2017 /522 AM CDT Wed Jun 28 2017/

This Hazardous weather outlook is for portions of south central
South Dakota...and western South Dakota.

.DAY ONE...Today and Tonight

Scattered thunderstorms will occur today, but organized severe
thunderstorms are not expected.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Scattered thunderstorms will occur through sunset Thursday, but
organized severe thunderstorms are not expected.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

$$

Hazardous Weather Outlook
National Weather Service Riverton WY
223 AM MDT Wed Jun 28 2017

WYZ001>020-022>030-291100-
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-
223 AM MDT Wed Jun 28 2017

...A flood warning remains in effect for a portion of the Green
River in southwestern Wyoming...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...Today and Tonight

Isolated (south and central Wyoming) to scattered thunderstorms
across northern Wyoming. A few storms may be strong to locally severe
across northern Wyoming producing brief heavy rain, wind gusts of
50 to 60 mph and hail to one inch this afternoon and evening.

Minor flooding will continue along the Green River near La Barge
and along the Big Horn River. Please see flood warning for the
Green River for the latest information.

Additionally, warm, dry and breezy to windy conditions will bring
elevated fire danger to portions of southern Wyoming.


.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

Thursday...Isolated to widely scattered thunderstorms mainly
across northern and central Wyoming. Some storms may be strong,
producing wind gusts of 40 to 50 mph and small hail in the
afternoon and evening.

Saturday and Sunday...Isolated to widely scattered thunderstorms
across north and central Wyoming.

.SPOTTER INFORMATION STATEMENT...Please report wind damage or
gusts in excess of 50 mph and hail of penny size or larger.

$$

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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