Area Forecast Discussion
Issued by NWS Cheyenne, WY

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

379
FXUS65 KCYS 040634
AFDCYS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
1234 AM MDT WED MAY 4 2016

.UPDATE...
ISSUED AT 908 PM MDT TUE MAY 3 2016

NOT MUCH IN THE WAY OF CHANGE TO THE PREVIOUS FORECAST FOR THE
REST OF TONIGHT INTO YOUR WEDNESDAY...JUST SOME VERY MINOR
WIND AND TEMPERATURE ADJUSTMENTS FOR THE MID EVENING UPDATE.
LARGE RIDGE OF HIGH PRESSURE MOVING VERY SLOWLY EAST ACROSS
WYOMING KEEPING CLEAR SKIES AND RELATIVELY MILD TEMPS OVERNIGHT
INTO WEDNESDAY. GENERALLY LIGHT NORTH WINDS ACROSS THE AREA WILL
GRADUALLY BECOME MORE SOUTHERLY THROUGH LATE TOMORROW.

&&

.SHORT TERM...(THIS EVENING THROUGH THURSDAY NIGHT)
ISSUED AT 334 PM MDT TUE MAY 3 2016

SOME CLOUDS OVER THE EASTERN WY PLAINS WILL DISSIPATE EARLY THIS
EVENING LEAVING CLEAR SKIES ACROSS THE CWA OVERNIGHT WITH MAINLY
CLEAR SKIES CONTINUING THROUGH WEDS NIGHT. THIS COMPLIMENTS OF AN
UPPER RIDGE THAT WILL HOLD ACROSS THE ROCKY MTN CHAIN THROUGH
THURSDAY. PLEASANT TEMPERATURES EXPECTED WITH MAX TEMPS WEDS IN
THE UPPER 60S AND 70S OUTSIDE OF THE MTNS...AND IN THE 70S TO MID
80S ON THURSDAY...WARMEST OVER THE NEB PANHANDLE. WINDS REMAINING
FAIRLY LIGHT THROUGH THE PERIOD. THERE IS A SMALL CHANCE FOR A FEW
SHOWERS TO POP UP OVER THE MTNS LATER THURSDAY AFTERNOON BUT
MOISTURE WILL BE MEAGER.

.LONG TERM...(FRIDAY THROUGH MONDAY NIGHT)
ISSUED AT 334 PM MDT TUE MAY 3 2016

MODELS REMAIN PRETTY CONSISTENT WITH THE UPCOMING WEEKEND STORM.
THE MAIN DIFFERENCES FROM PREVIOUS RUNS ARE THAT IT LOOKS TO BE A
COUPLE DEGREES WARMER AND THE SFC LOW ON SATURDAY IS POSITIONED
FURTHER SOUTH. STILL LOOKS TO BE A WIDESPREAD PRECIPITATION EVENT
FRIDAY THROUGH SUNDAY AS THE UPPER LOW TREKS UP FROM SOUTHERN
CALIFORNIA AND ACROSS WYOMING. AN INITIAL SHORTWAVE ON FRIDAY
WILL SPARK OFF AT LEAST SCATTERED SHOWERS AND T-STORMS FROM WEST
TO EAST THROUGH THE DAY WITH LI`S READING MINUS 1 TO MINUS 2. A
COLD FRONT DROPPING SOUTH ACROSS THE FORECAST AREA IN THE
AFTERNOON WILL AIDE IN STORM DEVELOPMENT...AND SOME STORMS
COULD BECOME STRONG AS 0-6KM BULK SHEAR PROGGED TO BE ROUGHLY 30
KTS. LLVL MOISTURE WILL BE LACKING THO...MEANING A FEW COULD
PRODUCE MARGINAL HAIL AND/OR WIND GUSTS BUT LIKELY NOT MUCH MORE
THAN THAT. HIGH PRESSURE BUILDING IN BEHIND THE COLD FRONT ON
SATURDAY WILL SHIFT SFC WINDS TO THE EAST-NORTHEAST WITH DEW
POINTS LOOKING TO INCREASE A GOOD 10 DEGREES. HOWEVER...THE
ENVIRONMENT LOOKS RATHER STABLE WITH THE POST FRONTAL AIRMASS
FIRMLY IN PLACE AND THE SFC LOW WEAKER AND FURTHER SOUTH INTO
COLORADO. SO IT MAY END UP BEING A MORE UPSLOPE DRIVEN...MODERATE
RAIN EVENT WITH A FEW CONVECTIVELY ENHANCED SHOWERS AND T-STORMS
NEAR THE TERRAIN. THE UPPER LOW LOOKS TO BE OVERHEAD ON SUNDAY AND
COULD DRIVE A FEW MORE T-STORMS MAINLY ACROSS THE PLAINS WITH
COLDER AIR OVERHEAD. SATURDAY NIGHT AND SUNDAY LOOKS TO BE THE
BEST SHOT FOR MOUNTAIN SNOWS AS THICKNESSES DROP TO 555 DAM OR SO
THROUGH THIS TIME. LINGERING SHOWERS IN WRAPAROUND MOISTURE WILL
PERSIST THROUGH MONDAY.

&&

.AVIATION...(FOR THE 06Z TAFS THROUGH 06Z WEDNESDAY NIGHT)
ISSUED AT 1232 AM MDT WED MAY 4 2016

QUIET WEATHER ACROSS SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE
TONIGHT AND WEDNESDAY. VFR AND LIGHT WINDS THROUGH THE TAF PERIOD
ACROSS THE FORECAST AREA.

&&

.FIRE WEATHER...
ISSUED AT 334 PM MDT TUE MAY 3 2016

CONCERNS WILL REMAIN LOW OVER AT LEAST THE NEXT FEW DAYS WITH
WEATHER FACTORS NON-CRITICAL. WARMER TEMPERATURES WILL PREVAIL
UNDER MAINLY CLEAR SKIES AND LIGHT WINDS.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...NONE.
NE...NONE.
&&

$$

UPDATE...JG
SHORT TERM...RE
LONG TERM...RJM
AVIATION...SML
FIRE WEATHER...RE



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.