547
FXUS66 KOTX 240558
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1058 PM PDT THU MAY 23 2013
SYNOPSIS
COOL AND SHOWERY WEATHER WILL CONTINUE THROUGH SATURDAY THEN A
SUBTLE WARMING AND DRYING TREND IS ANTICIPATED BY MONDAY AS THE
PERSISTENT UPPER-LEVEL LOW MOVES OUT OF THE AREA. THE BREAK WILL
BE SHORT-LIVED AS ANOTHER COOL AND SHOWERY PATTERN RETURNS AROUND
THE MIDDLE OF NEXT WEEK.
DISCUSSION
A QUICK UPDATE TO INCREASE FOG ACROSS THE NORTHERN MOUNTAIN
VALLEYS. CLEAR SKIES OVER THESE AREAS HAVE RESULTED IN RAPID
DECREASES IN TEMPS WITH DEW POINT DEPRESSIONS NEARING ZERO. FOG IS
EXPECTED TO REDEVELOP TONIGHT IN MANY OF THE SAME AREAS AS LAST
NIGHT. LOW TEMPERATURES SHOULD REMAIN JUST ABOVE FREEZING FOR MOST
LOCATIONS; THUS, THE FROST THAT WAS ADDED TO THE FORECAST EARLIER
WAS CONVERTED TO FOG. /SVH
AVIATION
00Z TAFS: CLEAR SKIES ACROSS MUCH OF THE NORTHERN AREAS IS
EXPECTED TO RESULT IN SOME FOG DEVELOPING LATE TONIGHT INTO
EARLIER TOMORROW MORNING. FOG IS EXPECTED TO DEVELOP AT THE KSFF
TAF SITE AROUND 12Z WITH DECREASING VIS INTO MVFR CATEGORY EXPECTED.
THE MAIN LOW PRESSURE SYSTEM IS EXPECTED TO SLIDE EASTWARD THROUGH
THE MORNING WITH INCREASING MID LEVEL CLOUD COVER FROM THE WEST.
LIGHT RAIN WILL DEVELOP ALONG THE LEADING EDGE OF THE SYSTEM WITH
CONVECTIVE SHOWERS EXPECTED TO DEVELOP ACROSS MUCH OF THE REGION BY
FRIDAY AFTERNOON. ISOLATED THUNDERSTORMS WILL BE POSSIBLE ACROSS
THE REGION IN THE AFTERNOON. /SVH
PRELIMINARY POINT TEMPS/POPS
SPOKANE 40 56 42 63 44 67 / 0 60 30 20 10 10
COEUR D'ALENE 38 56 41 63 42 67 / 0 60 40 20 10 20
PULLMAN 37 55 40 63 41 66 / 10 60 30 20 10 40
LEWISTON 43 61 45 70 48 73 / 10 50 30 20 10 30
COLVILLE 36 62 42 67 43 73 / 0 50 50 40 30 20
SANDPOINT 36 58 40 62 40 66 / 0 70 50 30 20 30
KELLOGG 39 54 41 60 43 64 / 0 70 60 40 30 30
MOSES LAKE 42 64 46 72 47 75 / 10 40 20 10 0 0
WENATCHEE 43 63 48 69 48 72 / 20 40 20 10 0 10
OMAK 36 64 42 68 42 73 / 10 40 30 20 20 10
OTX WATCHES/WARNINGS/ADVISORIES
ID...NONE.
WA...NONE.
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