577 
AWUS85 KCYS 312222
RWSWY 

WYZALL-011200 

REGIONAL WEATHER SUMMARY
NATIONAL WEATHER SERVICE CHEYENNE WY
421 PM MDT WED AUG 31 2011

...MOSTLY SUNNY WITH A FEW SHOWERS OR THUNDERSTORMS...

FOR SOUTHEAST WYOMING... 
A FEW SHOWERS AND THUNDERSTORMS DEVELOPED DURING THE AFTERNOON. 
GUSTY WESTERLY WINDS OF 15 TO 40 MILES AN HOUR AND DRY CONDITIONS 
PREVENTED MOST OF THE RAIN FROM REACHING THE GROUND. 

MORNING TEMPERATURES DIPPED INTO THE 50S TO LOWER 60S...WITH 40S AND 
50S IN THE HIGHER ELEVATIONS. AFTERNOON TEMPERATURES WARMED INTO THE 
80S TO LOWER 90S...WITH 70S AND 80S IN THE HIGHER ELEVATIONS. 

FOR NORTHEAST WYOMING...
TEMPERATURES EARLY WEDNESDAY MORNING WERE MAINLY IN THE 50S. BY THIS 
AFTERNOON...TEMPERATURES HAD RISEN TO AROUND 90 DEGREES UNDER A 
PARTLY SUNNY SKY WITH SOUTHERLY WINDS AROUND 10 MPH. AN ISOLATED 
THUNDERSTORM ALSO OCCURRED IN THE EARLY AFTERNOON HOURS TO THE NORTH 
OF INTERSTATE 90.
 
FOR WESTERN AND CENTRAL WYOMING...
EARLY MORNING SHOWERS AND THUNDERSTORMS MOVED TO THE NORTHEAST AND 
GAVE WAY TO MOSTLY CLEAR SKIES.  MOSTLY SUNNY TO PARTLY CLOUDY SKIES 
THEN DEVELOPED IN THE AFTERNOON...WITH THUNDERSTORMS MOVING OVER THE 
WIND RIVER MOUNTAINS...NORTHWEST MOUNTAINS...NORTHERN BIG HORN 
BASIN...AND THE ROCK SPRINGS AREA.  THE STORMS PRODUCED VERY HEAVY 
RAIN WITH PEA SIZE HAIL.  STRONG WINDS OVER 20 MPH ALSO DEVELOPED BY 
NOON...WITH RELATIVE HUMIDITIES GETTING BELOW 15 PERCENT AT MANY 
LOCATIONS.  THUS...FIRE DANGER CONDITIONS WERE HIGH THIS AFTERNOON.

MORNING LOW TEMPERATURES WERE MILD FROM THE LOW 40S TO THE LOW 60S.  
AFTERNOON HIGHS WERE QUITE WARM WITHE 80S AND 90S IN THE LOWER 
ELEVATIONS...AND 60S AND 70S IN THE MOUNTAINS.  AT 4 PM...WORLAND 
CAME IN AT 95 DEGREES...WITH GREYBULL AT 93...AND 
BUFFALO...RIVERTON...LANDER AT 91.  WITH SHOWERS AROUND...ROCK 
SPRINGS DROPPED TO 80 DEGREES...AND BIG PINEY...PINEDALE...AND 
JACKSON WERE IN THE LOW 80S. 

$$

CYS/UNR/RIW