Area Forecast Discussion
Issued by NWS Pocatello, ID

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
000
FXUS65 KPIH 020204
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
805 PM MDT SUN MAY 1 2016

.SHORT TERM...TONIGHT THROUGH WEDNESDAY. A QUICK UPDATE THIS EVENING
TO ALLOW THE LAKE WIND ADVISORY FOR AMERICAN FALLS RESERVOIR TO
EXPIRE WITH THE SETTING SUN. THE LATEST MODELS ARE SHOWING A FAIRLY
TIGHT EASTERLY SURFACE PRESSURE GRADIENT OVER THE REGION OVERNIGHT
WHICH WILL HELP TO DRY THINGS OUT AND ALLOW TEMPS TO FALL BUT THERE
MAY YET BE ENOUGH WIND TO KEEP THE BOUNDARY LAYER MIXED AND WARMER.
WE WILL SEE HOW IT PLAYS OUT IN THE MORNING. SEE PREVIOUS DISCUSSION
BELOW. HUSTON

AN UPPER HIGH OVER BC/AB WILL SAG SOUTH INTO WESTERN MT ON MONDAY.
THIS WILL EVENTUALLY LEAD TO A DOMINANT UPPER RIDGE OVER THE WEST
INTO WED. THE RESULT WILL BE WARMER TEMPS AND DRY CONDITIONS. BRISK
EASTERLY WINDS WILL DIMINISH TONIGHT...AND COMBINED WITH CLEAR SKIES
AND DRY AIR... WILL RESULT IN COLD EARLY MORN TEMPS. FROST IS A
POSSIBILITY EARLY MON MORN...MAINLY IN RURAL AREAS OF THE SNAKE
RIVER PLAIN/EASTERN MAGIC VALLEY.

ON WED...A DEEP UPPER TROF MOVING INTO THE WEST COAST WILL DISPLACE
THE UPPER RIDGE. THIS WILL ALLOW SOME PAC MOISTURE TO MOVE INTO THE
CENTRAL MTNS...RESULTING IN ISOLATED TSTMS WED AFTN. HEDGES

.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY.
UPPER LOW PUSHES ONTO CALIFORNIA COAST WEDNESDAY NIGHT INTO THURSDAY
SETTING UP DEEP SOUTHERLY FLOW ALOFT ALLOWING MOISTURE TO MOVE INTO
SOUTHEAST IDAHO.   EXPECT SHOWERS AND THUNDERSTORMS THE ENTIRE LONG
TERM PERIOD AS THE UPPER LOW WORKS EAST. GK
&&

.AVIATION...EXPECT VFR CONDITIONS THROUGH MONDAY. GK
&&

.PIH WATCHES/WARNINGS/ADVISORIES...
FROST ADVISORY FROM 2 AM TO 9 AM MDT MONDAY FOR IDZ017-020-021.
&&

$$


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