FXUS66 KOTX 250604
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1004 PM PST THU DEC 24 2009
.SYNOPSIS...
STRONG HIGH PRESSURE WILL GRADUALLY BUILD OVER THE PACIFIC NORTHWEST.
THIS RIDGE IS EXPECTED TO PERSIST THROUGH NEXT WEEK...RESULTING IN
LITTLE IF ANY CHANCE OF MEASURABLE PRECIPITATION. IT WILL ALSO
BRING INCREASING CHANCES FOR FOG AND LOW CLOUDS IN THE VALLEYS.
&&
.DISCUSSION...
UPDATE...SATELLITE INDICATES STRATUS TRAPPED NEAR THE CASCADE
VALLEYS...NORTHERN IDAHO AND AROUND THE BLUES. THIS WILL PERSIST
THROUGH NIGHT UNDER THE LOWER LEVEL INVERSION AND BUILDING
RIDGE...THOUGH THE FRINGES OF THE STRATUS MAY SLOSH A BIT.
THE 00Z SOUNDING INDICATED 800MB TEMPS WARMING 5 DEGREES OVER
YESTERDAY...INDICATIVE OF THE STRENGTHENING INVERSION. THERE ARE
HINTS OF OTHER STRATUS DEVELOPING OVER THE NORTHERN VALLEYS...AS
PER THE EARLIER FORECAST. MINOR ADJUSTMENTS MADE TO COVERAGE AND
WINDS...AS WELL AS TEMPERATURES. TWEAKS TEMPS UP UNDER STRATUS AND
REDUCED THEM SLIGHTLY IN OTHER AREAS THAT WERE NEAR PREVIOUS
FORECAST LOWS ALREADY. /JCOTE
&&
.AVIATION...
AREAS OF STRATUS WILL IMPACT THE KCOE TAF TONIGHT AND KEAT
TONIGHT INTO MUCH OF FRIDAY...WITH MVFR CIGS. INCREASING EASTERLY
WINDS AROUND KCOE TOWARD MORNING ARE EXPECTED TO HELP THIN THE
CLOUDS SOME. OTHER TAF SITES WILL BE ON THE FRINGES OF THE
STRATUS AND SOME MAY DEVELOP TOWARD THESE AREAS LATER IN THE
OVERNIGHT IN FRIDAY MORNING...ESPECIALLY NEAR KSFF AND KGEG.
/JCOTE
&&
.PRELIMINARY POINT TEMPS/POPS...
SPOKANE 14 26 19 27 19 26 / 0 0 0 0 0 0
COEUR D'ALENE 15 27 19 26 20 27 / 0 0 0 0 0 0
PULLMAN 19 30 20 31 20 29 / 0 0 0 0 0 0
LEWISTON 21 32 22 33 21 31 / 0 0 0 0 0 10
COLVILLE 14 27 19 25 20 26 / 0 0 0 0 0 10
SANDPOINT 15 25 17 25 17 26 / 0 0 0 0 0 0
KELLOGG 14 25 17 26 19 27 / 0 0 0 0 0 0
MOSES LAKE 16 29 18 28 17 28 / 0 0 0 0 0 10
WENATCHEE 20 26 21 28 20 28 / 0 0 0 0 0 10
OMAK 13 25 18 25 19 25 / 0 0 0 0 0 10
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
ID...AIR STAGNATION ADVISORY UNTIL 4 PM PST SATURDAY FOR CENTRAL
PANHANDLE MOUNTAINS...COEUR D'ALENE AREA...IDAHO PALOUSE...
LEWIS AND SOUTHERN NEZ PERCE COUNTIES...LEWISTON AREA...
NORTHERN PANHANDLE.
WA...AIR STAGNATION ADVISORY UNTIL 4 PM PST SATURDAY FOR EAST SLOPES
NORTHERN CASCADES...LOWER GARFIELD AND ASOTIN COUNTIES...
MOSES LAKE AREA...NORTHEAST MOUNTAINS...OKANOGAN
HIGHLANDS...OKANOGAN VALLEY...SPOKANE AREA...UPPER COLUMBIA
BASIN...WASHINGTON PALOUSE...WATERVILLE PLATEAU...WENATCHEE
AREA.
&&
$$
