Area Forecast Discussion
Issued by NWS Boise, 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 41 42 43 44 45 46 47 48 49 50
000
FXUS65 KBOI 100905
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
305 AM MDT THU JUL 10 2014

.DISCUSSION...LESS MONSOON MOISTURE THAN YESTERDAY ESPECIALLY ON THE
OREGON SIDE.  MOST OF THE MOISTURE NOW IS IN OUR SRN ZONES IN IDAHO.
INSTABILITY IS ALSO GREATEST NEAR THE NEVADA BORDER BUT CAPE IS
MINIMAL AND 0 TO 6 KM SHEAR IS WEAK.  THESE CONDITIONS WILL CONTINUE
THROUGH FRIDAY BUT FRIDAY/S WX SHOULD BE A LITTLE MORE ACTIVE AS
ANOTHER WEAK MONSOONAL SURGE COMES IN FROM NEVADA ON SLIGHTLY
STRONGER SWLY FLOW ALOFT.  PRECIPITABLE WATER REMAINS ABOVE AVERAGE
BUT WILL DECREASE TODAY AND TONIGHT THEN INCREASE AGAIN FRIDAY.
THESE CONDITIONS CALL FOR A CHANCE OF THUNDERSTORMS IN SRN-MOST
ZONES THIS AFTERNOON/EVENING AND AGAIN FRIDAY AFTERNOON.  ANY STORMS
THAT FORM WILL BE SLOW-MOVING AND MAY DUMP HEAVY RAIN BUT NOT ENOUGH
TO WARRANT A FLASH FLOOD WATCH.  HOTTER TODAY DUE TO LESS CLOUD COVER
WITH LITTLE CHANGE IN MAX TEMPS FRIDAY.  ABOVE NORMAL MIN TEMPS TONIGHT.

.LONG TERM...FRIDAY NIGHT THROUGH WEDNESDAY...BROAD UPPER LEVEL
RIDGE OVER THE DESERT SOUTHWEST WILL BEGIN TO BUILD INTO WESTERN
CANADA AND EASTERN ALASKA BY SUNDAY AHEAD OF A DEEP UPPER LEVEL
TROUGH IN THE GULF OF ALASKA. AS THIS PATTERN EVOLVES IT WILL BRING
A WARMING TREND TO THE PACIFIC NORTHWEST AND OUR REGION WITH THE
WARMEST PART OF THE AIR MASS OVER WESTERN WASHINGTON AND OREGON.
TEMPERATURES SUNDAY WILL BE OVER 100F IN MOST VALLEY LOCATIONS AND
WILL BE THE WARMEST DAY OF THE WEEK. A DEEP ANOMALOUS TROUGH OVER
THE CENTRAL UNITED STATES WILL FORM IN RESPONSE TO THIS RIDGE AND
DIVE SOUTHWARD AND KEEP US IN A NORTHERLY FLOW...WITH A STATIONARY
COLD FRONT OVER THE ROCKY MOUNTAINS TO OUR EAST. MOISTURE WILL CREEP
BACK INTO THE REGION MONDAY AND TUESDAY FOR A THREAT OF
THUNDERSTORMS OVER THE CENTRAL IDAHO MOUNTAINS. TEMPERATURES SHOULD
COME DOWN A FEW DEGREES AS A RESULT OF THE NORTHERLY FLOW. AFTER
WEDNESDAY THE RIDGE BEGINS TO SHIFT INLAND AND EXPAND FOR ANOTHER
WARMING TREND.

&&

.AVIATION...VFR. SCT-BKN MID LEVEL CLOUDS. ISOLATED THUNDERSTORMS
SOUTH OF A LINE FROM KREO-KTWF THIS AFTERNOON. LIGHT SURFACE WINDS
EXCEPT GUSTS TO 35KT IN THE VICINITY OF THUNDERSTORMS. WINDS ALOFT
AT 10K FEET MSL...WESTERLY 5-15KT.

&&

.BOI WATCHES/WARNINGS/ADVISORIES...
ID...NONE.
OR...NONE.
&&

$$

WEATHER.GOV/BOISE

SHORT TERM...LC
LONG TERM....KA
AVIATION.....KA



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