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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Riverton WY
141 PM MDT Sat Jun 6 2020

WYZ001>020-022>030-071300-
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-
141 PM MDT Sat Jun 6 2020

...Severe Thunderstorm Watch in Effect Until 8 PM MDT Saturday for
Johnson...Natrona...and Sweetwater Counties...

This Hazardous Weather Outlook is for Western and Central Wyoming.

.DAY ONE...This Afternoon and Tonight

Thunderstorms will increase in coverage this afternoon and
continue into the evening. Severe thunderstorms producing damaging
wind gusts, possibly ranging from 60 to 70 mph, will be possible
across Natrona, Johnson, and eastern Sweetwater counties. Other
showers and storms will be capable of generating outflow wind
gusts of 40 to 55 mph through 8 PM.

.DAYS TWO THROUGH SEVEN...Sunday through Friday

Sunday and Monday...Isolated to scattered showers and
thunderstorms. Higher elevation snow over far the western
mountains with accumulations above 9000 feet.

Sunday night and Monday night...A widespread freeze is possible
over the valleys and basins of western and southern Wyoming, as
well as the Dubois area.

Friday...Above normal temperatures, gusty southwest wind, and low
relative humidity could lead to elevated fire weather conditions
across southwest Wyoming.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions, especially wind gusts and wind damage.

$$



Severe Thunderstorm Warning

Severe Thunderstorm Warning
WYC017-043-062245-
/O.NEW.KRIW.SV.W.0017.200606T2159Z-200606T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Riverton WY
359 PM MDT Sat Jun 6 2020

The National Weather Service in Riverton has issued a

* Severe Thunderstorm Warning for...
  Hot Springs County in central Wyoming...
  Central Washakie County in central Wyoming...

* Until 445 PM MDT.

* At 358 PM MDT, severe thunderstorms were located along a line
  extending from 10 miles northwest of Boysen State Park to 7 miles
  west of Cottonwood Pass, moving north at 45 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Thermopolis and Hot Springs State Park around 420 PM MDT.
  Lucerne around 430 PM MDT.
  Kirby around 435 PM MDT.
  Winchester around 440 PM MDT.

Other locations impacted by these severe thunderstorms include
Badlands Overlook, Washakie County Fairgrounds, Hot Springs County
Airport and Hot Springs County Fairgrounds.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Riverton.

&&

LAT...LON 4406 10749 4350 10753 4350 10759 4347 10760
      4346 10834 4347 10834 4347 10846 4350 10846
      4350 10857 4353 10858 4353 10865 4402 10857
TIME...MOT...LOC 2158Z 181DEG 39KT 4342 10829 4344 10771

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

$$

TL



Special Weather Statement

Special Weather Statement
National Weather Service Riverton WY
242 PM MDT Sat Jun 6 2020

WYZ008-009-071000-
Bighorn Mountains West-Bighorn Mountains Southeast-
242 PM MDT Sat Jun 6 2020

...A RETURN TO WINTER LIKE CONDITIONS THIS WEEKEND AND INTO
MONDAY...

A strong late spring Pacific weather system will be bringing in
sharply colder temperatures and snow to the Big Horn Mountains
during this weekend and into Monday. Snow levels gradually lower
from this evening through Monday.

* WHAT...2 to 6 inches of snow above 10000 feet.

* WHERE...Big Horn Mountains.

* WHEN...This evening through Sunday and into Monday.

* ADDITIONAL DETAILS...Campers and hikers will need to prepare for
  sharply colder temperatures and winter like conditions.
  Temperatures will be around 30 degrees colder compared to what
  they have been during the last couple of days. Powder River and
  Granite Passes should only see around an inch of snow during
  this time frame.

$$



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: May 16, 2007
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