Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 132018
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
218 PM MDT SUN JUL 13 2014

.DISCUSSION...HIGH PRESSURE RIDGE WILL REMAIN OVER THE NORTHERN
GREAT BASIN AND NORTHERN ROCKIES INTO MONDAY MORNING. A SHORTWAVE
UPPER LOW PRESENTLY ALONG THE OR/WA COAST WILL MOVE INLAND
OVERNIGHT AND PRESS THROUGH THE UPPER LEVEL RIDGE TOMORROW
AFTERNOON. THIS FEATURE WILL TRANSITION INTO A SHORTWAVE TROUGH AND
MOVE INTO THE IDAHO PANHANDLE MONDAY EVENING. THE REMNANTS OF
THIS TROUGH WILL BE EMBEDDED IN NORTHWEST FLOW AND MOVE DOWN OVER
SOUTHEAST IDAHO ON TUESDAY AFTERNOON/EVENING. FOR MONDAY...HIGH
PRESSURE RIDGE WILL BRING HOT DAYTIME TEMPERATURES WITH POCATELLO
APPROACHING 100 DEGREES. IN ADDITION...EXPECT THUNDERSTORM
DEVELOPMENT BOTH MONDAY AND TUESDAY AFTERNOON/EVENING...MAINLY
OVER ELEVATED TERRAIN IN THE NORTHERN AND EASTERN PORTIONS OF
SOUTHEAST IDAHO.

EXPECT HIGH TEMPERATURES TO DROP 7 TO 10 DEGREES FOR TUESDAY AND
WEDNESDAY WITH INCREASED CLOUD COVER ON TUESDAY AND NORTHWEST FLOW
ON WEDNESDAY. TEMPERATURES WILL REMAIN SLIGHTLY ABOVE CLIMATE
NORMS FOR THE REMAINDER OF THE WEEK WITH HIGHS IN THE LOWER 90S FOR
POCATELLO. OTHERWISE...REGION WILL REMAIN UNDER DRY NORTHWEST FLOW
THROUGH FRIDAY. MODELS INDICATING A SHORTWAVE TROUGH EMBEDDED IN
NORTHWEST FLOW WILL SWING THROUGH SE IDAHO ON THURSDAY AFTERNOON
WITH THE POTENTIAL FOR THUNDERSTORM DEVELOPMENT ALONG THE WY/MT
BORDERS...HOWEVER THIS IS A LOW CONFIDENCE EVENT AT THE PRESENT
TIME AS TIMING AND STRENGTH ARE UNCERTAIN. UPPER FLOW TRANSITIONS
TO WESTERLY LATE IN THE WEEK AND SOUTHWESTERLY FOR NEXT WEEKEND.
THIS WILL OPEN THE DOOR FOR MONSOON MOISTURE OUT OF THE GREAT
BASIN AND POTENTIAL THUNDERSTORMS FOR UPCOMING WEEKEND.  DSH

&&

.AVIATION...EXPECT VFR CONDITIONS THE NEXT 24 HOURS WITH OVERALL
LIGHT WINDS AND MOSTLY CLEAR SKIES. A WEAK SHORT WAVE TROUGH WILL
MOVE THROUGH TOMORROW BRINGING MOSTLY MOUNTAIN SHOWERS AND
THUNDERSTORMS. LOOK FOR VICINITY SHOWERS AND THUNDERSTORMS FOR KSUN
AND KIDA AND TO AN LESSER EXTENT FOR KPIH AND KBYI. EXPECT GUSTY
WINDS OF AROUND 55 MPH IN AND AROUND THUNDERSTORMS. WYATT

&&

.FIRE WEATHER...LOOK FOR DRY AND MOSTLY CLEAR CONDITIONS OVER OUR
AREA TODAY AS THE UPPER LEVEL RIDGE AXIS IS CENTERED OVER IDAHO. A
WEAK SHORT WAVE WILL MOVE THROUGH TOMORROW BRINGING MOSTLY MOUNTAIN
SHOWERS AND THUNDERSTORMS. EXPECT GUSTY AND ERRATIC WINDS OF AROUND
55 MPH IN AND AROUND THUNDERSTORMS. WEAK NORTHWEST FLOW MOVES OVER
THE AREA LATE TUESDAY INTO WEDNESDAY WITH THE RIDGE AXIS OFF THE
PACIFIC COAST BRINGING LIGHT WINDS AND MOSTLY DRY CONDITIONS.
THURSDAY...MOUNTAIN THUNDERSTORM CHANCES RETURN AS A WEAK SHORTWAVE
MOVES THROUGH LEAVING WEAK...DRY ZONAL FLOW FOR FRIDAY.  WYATT

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$






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