Area Forecast Discussion
Issued by NWS Cheyenne, WY

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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
000
FXUS65 KCYS 090933
AFDCYS

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CHEYENNE WY
233 AM MST TUE FEB 9 2016

.SHORT TERM...(TODAY THROUGH THURSDAY NIGHT)
ISSUED AT 233 AM MST TUE FEB 9 2016

AN UPPER LEVEL RIDGE WILL REMAIN STAGNANT OVER THE WESTERN CONUS
THROUGH MOST OF THE WEEK...BRINGING ABOVE NORMAL TEMPS AND DRY
CONDITIONS TO THE FORECAST AREA. 700 MB TEMPS RISING TO ABOVE ZERO
READINGS WILL YIELD MAX TEMPS IN THE 40S/50S EAST AND 30S/40S
WEST...WITH THE WARMEST DAY LOOKING TO BE WEDNESDAY. COULD BE
WARMER THOUGH DEPENDING ON HOW QUICK THE SNOWPACK MELTS WHICH WILL
HAVE A HAND IN MIXING THE WARMER TEMPS DOWN TO THE SFC. KEPT THE
FORECAST CLOSE TO THE LOWER END OF GUIDANCE AS A DECENT SNOW PACK
IS STILL IN PLACE.

BREEZY WESTERLY WINDS WILL PERSIST IN THIS PATTERN AS WELL. A
WEAK SHORTWAVE MOVING INTO THE PAC NW EARLY WEDNESDAY MORNING WILL
FLATTEN THE RIDGE A BIT AND WILL COMBINE WITH A STRONGER SHORTWAVE
DIVING SOUTHEAST INTO THE NORTHERN PLAINS AND UPPER MIDWEST TO
INCREASE THE SFC PRESSURE GRADIENT ACROSS OUR FORECAST AREA.
GRADIENT PROGS SUGGEST HIGH SUSTAINED WINDS ARE POSSIBLE WEDNESDAY
MORNING...BUT WINDS ALOFT ARE PROGGED TO BE 45 KTS OR LESS THROUGH
THIS TIME WHICH SUGGESTS THAT GUSTS SHOULD REMAIN MARGINAL. WILL
KEEP A CLOSE EYE ON THIS SITUATION OVER THE NEXT FEW FORECAST
CYCLES TO SEE IF HIGH WIND HIGHLIGHTS ARE NEEDED.

.LONG TERM...(FRIDAY THROUGH MONDAY)
ISSUED AT 233 AM MST TUE FEB 9 2016

UPPER RIDGE AXIS WILL SHIFT EAST AND ACROSS THE CWA FRIDAY AND
FRIDAY NIGHT WITH THE NEXT UPPER SHORTWAVE MAKING ITS APPROACH TO
THE REGION SATURDAY. MILD AND DRY WEATHER FOR FRIDAY AND SATURDAY
THEN A COOL FRONT WILL PASS ACROSS LATE SATURDAY AS THE UPPER
SHORTWAVE MOVES INTO THE NORTHERN AND CENTRAL PLAINS. NOT MUCH
PCPN WITH THIS SYSTEM AND WILL MAINTAIN THE DRY FORECAST BUT A
FEW SNOW SHOWERS NOT COMPLETELY OUT OF THE QUESTION SAT NIGHT. DRY
AND COOLER CONDITIONS FOR SUNDAY IN THE WAKE OF THE SHORTWAVE
THOUGH LOOKS LIKE IT WILL BE WINDY IN AT LEAST SOME AREAS WITH A
DECENT PRESSURE GRADIENT. A BIT WARMER FOR MONDAY UNDER NWLY FLOW
ALOFT

&&

.AVIATION...(FOR THE 12Z TAFS THROUGH 12Z WEDNESDAY MORNING)
ISSUED AT 233 AM MST TUE FEB 9 2016

VFR CONDITIONS EXPECTED THROUGH THE PERIOD UNDER NWLY FLOW ALOFT.
SOME MID LEVEL CIGS AFFECTING NEB PANHANDLE TERMINALS EARLY THIS
MORNING. SOME GUSTY WINDS AT TIMES AROUND THE SE WY MTNS.

&&

.FIRE WEATHER...
ISSUED AT 233 AM MST TUE FEB 9 2016

NO FIRE WEATHER CONCERNS ARE EXPECTED IN THE NEAR TERM DUE TO THE
CURRENT SNOWPACK AND HIGH RELATIVE HUMIDITIES FORECAST THROUGH
THE WEEK. BREEZY WINDS WILL PREVAIL FOR MUCH OF THE REGION AND
TEMPERATURES WILL WARM WELL INTO THE 50S BY MIDWEEK ACROSS THE
PLAINS. MINIMUM HUMIDITIES WILL REMAIN ABOVE 30 PERCENT.

&&

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

$$

SHORT TERM...RJM
LONG TERM...RE
AVIATION...RE
FIRE WEATHER...RJM



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