738
FGUS75 KPIH 031606
ESFPIH
HYDROLOGIC OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO IDAHO
1020 AM MDT THU JUN 26 2008
..EASTERN IDAHO WEEKLY HYDROLOGIC UPDATE
NOTICE
THIS WILL BE THE LAST WEEKLY HYDROLOGIC UPDATE FOR THE SEASON. THE
UPDATES WILL BEGIN NEXT SPRING, DEPENDING ON THE SNOW SEASON.
FOR COMPLETE WEATHER, WATER AND CLIMATE NEEDS, YOU MAY CONTACT THE
POCATELLO WEATHER FORECAST OFFICE AT 208-233-0834 OR VISIT THE WEB
SITE AT WWW.WEATHER.GOV/POCATELLO.
SYNOPSIS
ANOTHER WEEK OF ABOVE NORMAL TEMPERATURES CONTINUED TO MELT MUCH OF
THE REMAINING EASTERN IDAHO SNOWPACK. PRECIPITATION AGAIN FELL ONE
POINT OVER THE WEEK TO 97% OF AVERAGE CAPACITY FOR THE 2008 WATER
YEAR.
7-DAY FORECAST
HIGH PRESSURE WILL CONTINUE TO INFLUENCE EASTERN IDAHO THROUGH
FRIDAY AFTERNOON WITH SOME CHANCE FOR ISOLATED THUNDERSTORMS THIS
AFTERNOON FOR THE CENTRAL MOUNTAINS AND EXTREME NORTHEASTERN IDAHO.
TEMPERATURES WILL CONTINUE IN THE MID TO UPPER 90S FOR MOST AREAS
TODAY AND TOMORROW. A COLD FRONT WILL ARRIVE FRIDAY AFTERNOON
BRINGING INCREASING SURFACE WINDS AND AN INCREASE IN CONVECTIVE
ACTIVITY WITH PRECIPITATION MAINLY OVER THE SAWTOOTH MOUNTAINS AND
EASTERN HIGHLANDS. THE SYSTEM WILL MOVE EASTWARD SUNDAY AS WESTERLY
FLOW WILL DOMINATE. TEMPERATURES WILL DROP ABOUT 10 DEGREES AND
SLOWLY INCH UP THROUGH THE WEEK WITH NO SIGNS OF PRECIPITATION.
AREAS OF IMMEDIATE CONCERN
WITH RIVER LEVELS DOWN AND NEARLY ALL SNOWPACK MELTED, THERE ARE NO
AREAS OF CONCERN.
LONG-RANGE FORECAST
THE NATIONAL WEATHER SERVICE CLIMATE PREDICTION CENTERS (CPC)
JULY-AUGUST-SEPTEMBER FORECAST CALLS FOR ABOVE-NORMAL TEMPERATURES
AND BELOW-NORMAL PRECIPITATION. THE FALL LONG-RANGE FORECAST IS FOR
EQUAL CHANCES FOR ABOVE, AT OR BELOW-NORMAL TEMPERATURES AND
PRECIPITATION.
LONG-RANGE FORECAST VALID JUNE 19, 2008.
LONG RANGE FORECAST PRODUCTS ARE RELEASED THE THIRD THURSDAY OF
EVERY MONTH.
DATA ROUND-UP
EASTERN IDAHO PRECIPITATION
6/19/2008 6/26/2008 WEEKLY
PRECIP PRECIP CHANGE
BASIN % AVERAGE % AVERAGE (PERCENT)
SALMON 101 101 0
BIG WOOD 92 90 -2
LITTLE WOOD 89 89 0
BIG LOST 86 85 -1
LITTLE LOST 89 88 -1
HENRY'S/TETON 111 109 -2
SNAKE ABOVE PALISADES 107 108 1
BLACKFOOT, PORTNEUF 99 98 -1
OAKLEY 109 109 0
BEAR 95 95 0
EASTERN IDAHO AVERAGE 98 97 -1
RESERVOIR STATUS
THE UPPER SNAKE RIVER RESERVOIR SYSTEM IS CURRENTLY AT 85% OF
CAPACITY, UP 3% OVER THE WEEK. SELECT RESERVOIR STORAGE AMOUNTS ARE
BELOW. ALL VALUES ARE A PERCENT OF RESERVOIR CAPACITY.
RESERVOIR 6/19/2008 6/26/2008 WEEKLY
CAPACITY CAPACITY CHANGE
JACKSON 98 100 2
PALISADES 74 88 14
AMERICAN FALLS 77 72 -5
HENRYS LAKE 99 100 1
ISLAND PARK 97 95 -2
LITTLE WOOD 70 65 -5
EASTERN IDAHO RIVER LEVELS
RIVERS ACROSS EASTERN IDAHO CONTINUE TO RUN AT OR SLIGHTLY ABOVE
NORMAL FOR THIS TIME OF YEAR.
FOR MORE HYDROLOGIC AND WEATHER INFORMATION...PLEASE VISIT THE
POCATELLO WEATHER FORECAST OFFICE WEBSITE AT
WWW.WEATHER.GOV/POCATELLO.
HEBERT
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