Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 160918
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
318 AM MDT SAT MAY 16 2015

.SHORT TERM...TODAY THROUGH SUNDAY NIGHT. A HUGE BAND OF
PRECIPITATION CONTINUES TO SIT OVER MUCH OF EASTERN IDAHO...WITH
DRIER CONDITIONS ON BOTH THE FAR NORTHWEST AND SOUTHEAST CORNERS
OF OUR FORECAST AREA. THE BAND WILL SLOWLY SHIFT TO THE EAST TODAY
AS THE LOW KEEPS ON SHIFTING TOWARD THE PLAINS. THERE IS STILL
THE POTENTIAL FOR ISOLATED STORMS BUT HONESTLY IT MIGHT BE A
STRETCH AS WE WOULD NEED TO OVERCOME EXTENSIVE CLOUD COVER. SOME
FOLKS TODAY WILL SEE SOME NICE RAINFALL. WE AREN`T SEEING
ANYTHING THAT WOULD INDICATE ANY TYPE OF BIG IMPACTS FOR FLOODING.
HOWEVER...THERE WILL LIKELY BE SOME RISES ON SMALL STREAMS/CREEKS
IN SOME AREAS. WHERE THERE IS STEEP TERRAIN...IT IS POSSIBLE BUT
LIKELY ON THE LOW SIDE FOR RUNOFF ISSUES AND SLIDES. WE WILL SEE
WINDS PICKING UP LATER ON THE BACK SIDE OF THE STORM AS THE
SURFACE GRADIENT STRENGTHENS. WINDS OF 10-20MPH ARE POSSIBLE IN
SOME AREAS BUT NOTHING THAT WILL REQUIRE ANY HEADLINES AT THIS
POINT. BY TONIGHT...WE WILL STARTING SHOWERS THIN OUT ESPECIALLY
ACROSS THE SNAKE PLAIN AS WEAK HIGH PRESSURE BUILDS UP. THERE WILL
BE TWO MAIN AREAS OF RAIN/HIGH MOUNTAIN SNOW LEFT. ONE WILL BE
ACROSS THE CENTRAL MOUNTAINS EXTENDING DOWN TO SOUTH OF BURLEY AND
THE OTHER ALONG THE WYOMING BORDER. FOR SUNDAY AND SUNDAY
NIGHT...WE WILL SEE AN INCREASE IN SHOWERS AND THUNDERSTORMS
TOMORROW AFTERNOON AND EVENING WHEN INSTABILITY IS MAXED OUT.
TEMPERATURES WILL BE PRETTY COOL...10-15 DEGREES BELOW AVERAGE
TODAY AND ABOUT 5 DEGREES BELOW AVERAGE ON SUNDAY. WE WILL HAVE TO
CONTEND WITH SOME OCCASIONAL ACCUMULATING SNOW IN THE
MOUNTAINS...BUT MOSTLY ABOVE 8000FT.  KEYES

.LONG TERM...MONDAY THROUGH NEXT SATURDAY. THE WEATHER WILL REMAIN
UNSETTLED AND WET NEXT WEEK. WE WILL HAVE 2 STORMS MOVING ACROSS
THE WEST...IN VERY SIMILAR FASHION IN TERMS OF THE TRACK TO THE
CURRENT ONE. THAT MEANS A DAILY CHANCE OF RAIN AND THUNDER. FOR
NOW...WE DIDN`T TRY TO GET TOO FANCY AND DETAILED WITH THE
FORECAST. TEMPERATURES SHOULD BE A BIT WARMER...BUT STILL ONLY
AROUND AVERAGE FOR LATE MAY. KEYES

&&

.AVIATION...A LOW PRESSURE SYSTEM WILL MOVE THROUGH THE AREA TODAY.
THIS WILL BRING A LARGE BATCH OF RAIN TO THE REGION. MVFR CEILINGS
AND VISIBILITIES ARE POSSIBLE IN THE RAIN BAND. EXPECT BREEZY
CONDITIONS TO DEVELOP THIS AFTERNOON.

VALLE

&&

.FIRE WEATHER...A LOW PRESSURE SYSTEM WILL MOVE THROUGH THE REGION
TODAY. THIS WILL PRODUCE A GOOD CHANCE FOR RAIN ACROSS THE REGION
TODAY. THE AREA WILL BE IN BETWEEN SYSTEMS ON SUNDAY BUT A FEW
SHOWERS AND THUNDERSTORMS ARE STILL POSSIBLE.

VALLE

&&

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

$$


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