Issued by NWS Cheyenne, WY
000 FLUS45 KCYS 121617 AAA HWOCYS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 1016 AM MDT TUE MAY 12 2009 NEZ001>003-019>021-054-055-WYZ059>070-131230- SIOUX-DAWES-BOX BUTTE-SCOTTS BLUFF-BANNER-MORRILL-KIMBALL- CHEYENNE-CONVERSE-NIOBRARA-SOUTHWEST CARBON-NORTH CARBON- SNOWY RANGE-NORTH LARAMIE RANGE-LARAMIE VALLEY-LARAMIE RANGE- PLATTE-GOSHEN-CHEYENNE FOOTHILLS-PINE BLUFFS- 1016 AM MDT TUE MAY 12 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN NEBRASKA PANHANDLE AND SOUTHEAST WYOMING. .DAY ONE...THIS AFTERNOON AND TONIGHT SCATTERED THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON NEAR THE EASTERN WYOMING BORDER AND THEN MOVE RAPIDLY EAST THROUGH THE EARLY EVENING. A FEW OF THE STORMS IN THE WESTERN NEBRASKA PANHANDLE WILL BECOME SEVERE...ESPECIALLY IN THE SIOUX AND DAWES COUNTIES AS WELL AS BETWEEN CHADRON AND SIDNEY. THAT AREA WILL HAVE FAVORABLE LOW LEVEL MOISTURE...INSTABILITY AND SHEAR TO AID IN PRODUCING A FEW SEVERE STORMS. STRONG WIND GUSTS TOM 60 MPH AND HAIL UP TO ONE INCH IN DIAMETER WILL BE POSSIBLE WITH THE SEVERE STORMS. GUSTY WESTERLY WINDS TO 45 MPH WILL ALSO OCCUR ACROSS SOUTHEAST WYOMING THIS AFTERNOON. MINIMUM RELATIVE HUMIDITY VALUES WILL FALL TO BETWEEN 15 AND 25 PERCENT AND ALONG WITH THE WINDS AND WARM TEMPERATURES WILL HEIGHTEN FIRE WEATHER CONCERNS. WITH THE FUELS GREEN AT THIS TIME...THE POTENTIAL FOR LARGE FIRES AND RAPID FIRE SPREAD ARE LOW. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE WILL BE A SLIGHT CHANCE OF AFTERNOON AND EVENING THUNDERSTORMS THURSDAY AND FRIDAY. NORTHWEST WINDS WILL GUST AS HIGH AS 45 MPH OVER MUCH OF THE AREA ON WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED IN THE NEBRASKA PANHANDLE LATE THIS AFTERNOON AND EARLY THIS EVENING. SPOTTERS ARE ENCOURAGED TO REPORT ANY SEVERE THUNDERSTORMS OR CONDITIONS APPROACHING SEVERE THUNDERSTORM CRITERIA. && THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGIC...AND CLIMATE INFORMATION IS AVAILABLE ON THE WEB AT... HTTP://WEATHER.GOV/CHEYENNE $$ WEILAND
