000
FXUS65 KPIH 181956
AFDPIH

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
156 PM MDT SAT MAY 18 2013

.SHORT TERM...A LOW PRESSURE SYSTEM MOVING INTO SOUTHWEST WYOMING
BROUGHT WET WEATHER TO PORTIONS OF THE CENTRAL MOUNTAINS...UPPER
SNAKE PLAIN AND EASTERN HIGHLANDS TODAY. GUSTY WINDS ARE OCCURRING
BEHIND THE LOW. A LAKE WIND ADVISORY REMAINS IN EFFECT FOR THE
AMERICAN FALLS RESERVOIR INTO THE EVENING HOURS BECAUSE OF THE
WINDS. EXPECT SHOWERS TO DIMINISH LATER THIS EVENING. ANOTHER WEAK
LOW PRESSURE SYSTEM WILL MOVE THROUGH THE REGION ON SUNDAY. THIS
WILL PRODUCE SCATTERED SHOWERS AND THUNDERSTORMS ACROSS THE AREA
FOR SUNDAY AFTERNOON AND EVENING. A RIDGE OF HIGH PRESSURE WILL
BUILD INTO THE REGION ON MONDAY. THIS WILL PRODUCE DRY CONDITIONS
OVER MUCH OF THE AREA...HOWEVER ENOUGH MOISTURE WILL BE AROUND TO
TRIGGER ISOLATED TO SCATTERED SHOWERS OVER THE MOUNTAINS AND
EASTERN HIGHLANDS ON MONDAY. TEMPS WILL REMAIN COOL ON
SUNDAY...BUT SHOULD REBOUND INTO THE 70S ON MONDAY WITH ADDITIONAL
SUNSHINE IN THE FORECAST.

VALLE

.LONG TERM...TUESDAY MORNING THROUGH SATURDAY.  MODELS CONTINUE TO
SHOW HIGH PRESSURE RIDGING OVER THE AREA EARLY IN THE PERIOD WITH
GRADUAL WARMING TEMPERATURES THROUGH THE PERIOD. ALSO THE MODELS ARE
CONTINUING THEIR TREND OF BRINGING AN UPPER LEVEL LOW OVER THE
NORTHWEST BY THE END OF THE WEEK INTO THE WEEKEND. THE ECMWF BRINGS
THE LOW A LITTLE FARTHER EAST OVER THE WASHINGTON AND OREGON
BRINGING MORE PRECIPITATION OVER OUR AREA. THE GFS MODEL CONTINUES
TO DROP THE LOW DOWN JUST OFF THE PACIFIC COAST BRINGING DRIER
CONDITIONS OVER SOUTHEAST LATE IN THE WEEKEND INTO THE WEEKEND.
WYATT

&&

.AVIATION...SHOWERS ARE JUST ENDING FOR KIDA. LOOK FOR LINGERING
IFR/MVFR CIGS UNTIL LATE THIS AFTERNOON INTO EARLY EVENING. EXPECT
VICINITY SHOWERS FOR KPIH AND KIDA THROUGH EARLY EVENING. LOOK FOR
VICINITY THUNDERSTORMS FOR KSUN THIS AFTERNOON INTO EARLY EVENING.
TOMORROW LOOK FOR VICINITY THUNDERSTORMS BY LATE MORNING FOR ALL TAF
SITES AS AN ADDITIONALLY DISTURBANCE MOVES THROUGH THE AREA. WYATT

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
LAKE WIND ADVISORY UNTIL 9 PM MDT THIS EVENING IDZ021.

&&

$$