FXUS66 KOTX 220609
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1009 PM PST MON DEC 21 2009
.SYNOPSIS...
A COLD FRONT WILL MOVE THROUGH THE PACIFIC NORTHWEST TONIGHT
BRINGING ANOTHER ROUND OF RAIN AND HIGH MOUNTAIN SNOW TO THE REGION.
THE FRONT WILL ALSO BRING AN END TO THE FOG AND LOW CLOUDS THAT HAVE
PLAGUED CENTRAL WASHINGTON FOR THE LAST SEVERAL DAYS. AN UPPER
LEVEL DISTURBANCE WILL BRING THE CHANCE FOR SOME LIGHT SNOW TO THE
IDAHO PANHANDLE TUESDAY NIGHT INTO WEDNESDAY MORNING. COLD...BUT
DRY WEATHER IS EXPECTED FOR CHRISTMAS EVE THROUGH THE WEEKEND
FOLLOWING CHRISTMAS.
&&
.DISCUSSION...
UPDATE...COLD FRONT HAS BEEN MAKING ITS WAY ACROSS THE PALOUSE AND
SPOKANE AREA IN THE PAST 1-2 HOURS...WITH SOME BLUSTERY
CONDITIONS. THIS HAS BEEN DRIVING THE MAIN PRECIPITATION BAND
TOWARD THE NORTHEAST...COUPLED WITH SOME BRIEF MODERATE SNOW BANDS
REPORTED ON THE HIGHER PALOUSE TO SOUTHERN SPOKANE COUNTY THAT
DROPPED ANYWHERE FROM A TENTH TO A HALF INCH. WITH THE MAIN BAND
TRACKING NORTHEAST THE THREAT FOR SIMILAR ADDITIONAL SNOWFALL
AMOUNTS IS MINIMAL OUTSIDE OF THE NE WA AND ID PANHANDLE ZONES.
ADJUSTMENTS MADE TO REMOVE THE EVENING WORDING AND MAKE TWEAKS TO
THE WINDS AND PRECIPITATION TIMING FOR THE NEXT 3-6 HOURS.
PRECIPITATION IS STILL ON TRACK TO PUSH TO MAINLY THE NORTHEAST WA
AND IDAHO PANHANDLE. HOWEVER OVERALL FORECAST REMAINS ON TRACK.
THE FLOOD ADVISORY FOR THE FAR NE WA/NRN ID COUNTIES WAS CONTINUED
TO THE EARLY OVERNIGHT...GIVEN THE CONTINUED FRONTAL PRECIPITATION
BAND. WE WILL CONTINUE TO MONITOR THE PRECIPITATION BANDS PASSAGE
FOR POSSIBLE EARLIER CANCELLATION.
WITH FALLING TEMPERATURES BEHIND THE FRONT AND RECENT RAIN THAT
HAVE DAMPENED THE ROADS...WE WILL HAVE TO WATCH FOR SOME ICY
ROADS DEVELOPING...ESPECIALLY TOWARD DAYBREAK. /JCOTE
&&
.AVIATION...
SYSTEM PASSING TO THE NORTHEAST TONIGHT WILL BE FOLLOWED BY A
MID-LEVEL DISTURBANCE DROPPING TOWARD THE AREA LATE TUESDAY.
EXPECT AREAS OF -RASN OR -SN OVER NE WA AND NRN ID TO DWINDLE
OVERNIGHT. WITH THE CONTINUED SW FLOW BEHIND THE PRECIP EXPECT
AREAS OF IFR CIGS AND LCL MVFR/IFR VIS. AS WINDS WANE TOWARD THE
WESTERN TAF SITES THERE WILL BE THREAT FOR RETURNING MVFR/IFR CIGS
AND VIS...ESPECIALLY NEAR KMWH. SOME IMPROVEMENT IS EXPECTED BY
MID TO LATE MORNING TUESDAY. THE NEXT SYSTEM WILL SLIP BY WITH
SNOW SHOWER CHANCES...OVER FAR EAST WA AND NRN ID. /JCOTE
&&
.PRELIMINARY POINT TEMPS/POPS...
SPOKANE 28 35 21 27 14 25 / 80 10 20 10 0 0
COEUR D'ALENE 30 34 25 28 15 26 / 90 10 40 10 0 0
PULLMAN 27 34 24 28 18 25 / 80 20 30 30 0 0
LEWISTON 33 39 26 35 22 31 / 70 20 20 20 0 0
COLVILLE 31 36 19 26 11 25 / 90 20 20 10 0 0
SANDPOINT 31 35 24 28 13 26 / 100 20 60 10 0 0
KELLOGG 29 31 23 26 15 25 / 100 40 60 40 10 0
MOSES LAKE 23 36 20 30 16 26 / 40 10 0 0 0 0
WENATCHEE 26 35 22 29 19 28 / 20 10 0 0 0 0
OMAK 27 34 18 24 12 25 / 50 10 0 0 0 0
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
ID...NONE.
WA...NONE.
&&
$$
