Area Forecast Discussion
Issued by NWS Boise, ID

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FXUS65 KBOI 020910
AFDBOI

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BOISE ID
310 AM MDT WED SEP 2 2015

.SHORT TERM...ONE LAST WARM DAY BEFORE A SIGNIFICANT COLD FRONT
THURSDAY.  MODELS HAVE SLOWED ARRIVAL OF THE FRONT...NOW EXPECTED
THROUGH BAKER AND HARNEY COUNTIES 09Z-15Z THU...AND MALHEUR COUNTY
15Z-18Z THU.  IN IDAHO THE FRONT SHOULD PASS THROUGH THE WEST
CENTRAL MOUNTAINS 12Z-18Z THU AND SWRN IDAHO THURSDAY AFTERNOON.
SHOWERS ON THE FRONT WILL BE MAINLY IN OUR NRN ZONES...BUT STEENS
MOUNTAIN AND THE OWYHEES WILL GET A LITTLE RAIN ALSO.  LOWER
ELEVATIONS IN THE SOUTH...INCLUDING THE SNAKE BASIN...SHOULD STAY
DRY.  LIGHT WINDS THROUGH AFTERNOON WILL BECOME MODERATE NORTHWEST
LATE TODAY AND TONIGHT THEN INCREASE TO 15 TO 30 MPH THURSDAY.  MAX
TEMPS TODAY WILL BE LIKE YESTERDAY IN THE SNAKE BASIN SOUTH TO THE
ID/NV BORDER...BUT AS MUCH AS 10 DEGS COOLER THAN YESTERDAY IN BAKER
COUNTY.  LOWS TONIGHT WILL BE MILD...IN THE 40S TO MID 50S...DUE TO
CLOUD COVER...SHOWERS..AND WINDS.  HIGHS THURSDAY WILL BE ABOUT 15
DEGS COOLER THAN TODAY IN SWRN IDAHO AND SRN MALHEUR COUNTY...AND
ABOUT 10 DEGS COOLER THAN TODAY IN THE NORTH.

.LONG TERM...THURSDAY NIGHT THROUGH WEDNESDAY...ENSEMBLES AND THE
EC AND GFS ALL IN GENERAL AGREEMENT IN KEEPING LONG WAVE TROUGH OVER
OUR FORECAST AREA FROM THURSDAY NIGHT INTO THE WEEKEND...THEN THE
TROUGH WILL MOVE NORTHEAST WITH WESTERLY FLOW ALOFT OVER AREA BY
MONDAY.  A SHORT WAVE ON TUESDAY LOOKS TO BE BE NORTH OF US...THEN
HINTS OF SOME SHORT WAVE RIDGING BY WEDNESDAY.  SO WE CAN EXPECT
COOL CONDITIONS THROUGH SUNDAY WITH FRIDAY AND SATURDAY BEING THE
COOLEST WITH HIGHS A GOOD 15 DEGREES BELOW NORMAL.  THEN A WARMING
TREND WILL BEGIN ON SUNDAY AND EXTEND INTO WEDNESDAY WITH TEMPS
SLIGHTLY ABOVE NORMAL TUESDAY AND WEDNESDAY.  AS FOR PRECIP...BEST
CHANCE WILL IN BE NORTHERN ZONES THROUGH SUNDAY AND DRY FOR MONDAY
THROUGH WEDNESDAY.

&&

.AVIATION...VFR. SMOKE WILL CONTINUE TO REDUCE VISIBILITY ACROSS E-
CENTRAL OREGON AND W-CENTRAL ID MTNS. INCREASE IN HIGH CEILINGS
TODAY AS A COLD FRONT APPROACHES FROM THE WEST.  FRONTAL BAND SHOULD
BY OVER KBNO TO KBKE TO KMYL BY 06Z.  WEST-SOUTHWEST SURFACE WINDS
INCREASE THIS AFTERNOON WITH GUSTS OF 20-25 KTS IN SE OREGON AND
HIGHER TERRAIN SW IDAHO. SOUTHWEST WINDS ALOFT OF 20-30 KTS THROUGH
10K FEET MSL.

&&

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

&&

$$

WEATHER.GOV/BOISE

SHORT TERM...LC
LONG TERM....RD
AVIATION.....RD


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