895
FXUS66 KOTX 031827
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1127 AM PDT THU SEP 3 2026
KEY MESSAGES
- COOL AND SHOWERY WEATHER EXPECTED THROUGH LABOR DAY WEEKEND
WITH ISOLATED THUNDERSTORMS.
SYNOPSIS
ACTIVE WEATHER STICKS AROUND THE REST OF THE WORKWEEK WITH
WIDELY SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS, BREEZY
WINDS AND TEMPERATURES COOLING BACK BELOW NORMAL.
DISCUSSION
TODAY THROUGH FRIDAY: THE OFFSHORE LOW WILL SPIRAL DOWN THE
COAST, EJECTING SHORTWAVES ACROSS THE INLAND NW BEFORE IT TOO
PIVOTS INLAND TONIGHT INTO FRIDAY. ONE OF THOSE SHORTWAVE BEGAN
ITS TREK INLAND LAST NIGHT AND WILL BE MOVING TRACKING NORTHEAST
THIS MORNING. RAIN ALONG AND AHEAD OF IT WILL IMPACT THE
NORTHEAST HALF OF WA AND THE ID PANHANDLE EARLY THIS MORNING,
SHIFTING TO MAINLY THE NORTHERN COUNTIES AND IDAHO PANHANDLE
LATE THIS MORNING. THEREAFTER THE PRECIPITATION START TO TURN
MORE ISOLATED TO SCATTERED IN NATURE, BECOMING MORE CONVECTIVE
FOCUSED AROUND THE MOUNTAINS AND UP AGAINST THE CASCADES FOR
THIS AFTERNOON. SOME EMBEDDED T-STORMS ARE POSSIBLE THIS MORNING
ALONG THE AXIS OF THAT SHORTWAVE AND THEN IN MORE ISOLATED
FASHION AROUND THE MOUNTAINS THIS AFTERNOON. HEADING INTO THIS
EVENING, TONIGHT AND FRIDAY THAT LOW PIVOTS IN. THE SHOWERS AND
T-STORM THREAT NEAR THE CASCADES WANE THROUGH DARK, BUT FARTHER
EAST SHORTWAVE MOVES UP THE NORTHERN ROCKIES. THAT WILL RENEW
RAIN CHANCES OVER SOUTHEAST WA/LOWER ID THIS EVENING AND ACROSS
NORTHEAST WA TO NORTHERN ID LATE THIS EVENING INTO THE
OVERNIGHT, WRAPPING BACK TOWARD THE NORTHER MOUNTAINS THROUGH
FRIDAY MORNING. BY FRIDAY AFTERNOON THE LINGER UPPER LOW AND
BOUNDARY NEAR THE SE CWA WILL CONTINUE TO MEAN SOME RISK FOR
SHOWERS AND T-STORM. CHANCES WILL BE BEST AROUND THE MOUNTAINS
AND OTHERS WILL BE POSSIBLE IN SE WA AND THE LOWER ID PANHANDLE
NEAR THAT BOUNDARY AND SOME OF THE BETTER LAPSE RATES AND
INSTABILITY.
WIND WILL REMAIN A BIT BREEZY TODAY, ESPECIALLY OVER CENTRAL WA
WITH WINDS FROM THE SOUTH TO SOUTHWEST AT 10 TO 15 MPH AND GUSTS
UP TO 20 MPH. HOWEVER COMPARATIVELY LIGHTER WINDS ARE FORECAST
FOR FRIDAY. HIGHS WILL BE IN THE 60S TO LOWER 70S. LOWS WILL IN
THE UPPER 30S AND 40S THURSDAY NIGHT AND MID-30S TO 40S FRIDAY
NIGHT/SATURDAY AM. WE WILL HAVE TO WATCH FOR SOME PATCHY FROST
THEN.
SATURDAY TO WEDNESDAY: THE INLAND NW REMAINS DOMINATED BY THE
TROUGH OF LOW PRESSURE AND BOUNDARY STALLED NEAR THE EASTERN
CWA FOR SOME OF THIS PERIOD. THAT BOUNDARY WILL GIVE SOME
EMBEDDED DISTURBANCES SOMETHING TO FOCUS ALONG. THAT WILL BRING
SOME MODERATE PRECIPITATION CHANCES THROUGH THE WEEKEND AND
MONDAY, WITH THE HIGHEST CHANCES OVER THE EASTERN THIRD OF WA
AND ID. MODELS ARE NOT ENTIRELY IN GOOD AGREEMENT ON THE
EVOLUTION OF THE PRECISE WAVES AND PRECIPITATION POTENTIAL, SO
THE FORECAST WILL CONTINUE TO BE FINE-TUNED. MODELS TRENDS
TOWARD THE LOW LOSING INFLUENCE TUESDAY AND WEDNESDAY, SOME
EMBEDDED T-STORMS WILL REMAIN A RISK, BUT THE POTENTIAL IS
INCONSISTENT AS THE FOCUS HAS BEEN CHANGING DAY TO DAY. EXPECT
MODERATING TEMPERATURES INTO THE WEEKEND. /SOLVEIG
AVIATION
18Z TAFS: SHOWERS WITH THE POTENTIAL FOR ISOLATED EMBEDDED
THUNDERSTORMS WILL CONTINUE THROUGH THE 24 TAF PERIOD. EXPECT
OCCASIONAL MVFR CONDITIONS, PARTICULARLY IN AND ADJACENT TO ANY
STORMS. BEST CHANCES FOR TS (MAINLY THIS AFTERNOON) WOULD BE
ACROSS THE CASCADES, NORTHERN MOUNTAINS, AND FAR SE WASHINGTON
INTO THE CENTRAL ID PANHANDLE. WINDS WILL BE BREEZY OUT THE
SOUTH/SOUTHWEST FOR THE COLUMBIA BASIN AND SPOKANE AREA THIS
AFTERNOON.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: LOW CONFIDENCE
IN THUNDERSTORMS IMPACTING ANY TAF LOCATION.
-----------------------
CONFIDENCE DESCRIPTORS:
LOW - LESS THAN A 30 PERCENT CHANCE
MODERATE - 30 TO 70 PERCENT CHANCE
HIGH - GREATER THAN A 70 PERCENT CHANCE
FOR ADDITIONAL PROBABILISTIC INFORMATION FOR NWS SPOKANE
AIRPORTS, PLEASE REFER TO THE AVIATION DASHBOARD ON OUR
WEBPAGE: HTTPS:/WWW.WEATHER.GOV/OTX/AVNDASHBOARD
PRELIMINARY POINT TEMPS/POPS
SPOKANE 66 47 66 43 68 43 / 40 10 30 20 30 10
COEUR D'ALENE 66 46 66 43 68 43 / 80 30 40 10 40 20
PULLMAN 62 44 63 36 66 37 / 70 50 30 20 30 10
LEWISTON 67 52 68 49 72 49 / 90 80 40 30 30 10
COLVILLE 67 41 67 35 68 35 / 60 0 30 10 40 10
SANDPOINT 64 44 64 38 65 38 / 80 20 30 30 50 20
KELLOGG 61 44 61 43 65 43 / 90 60 50 30 40 10
MOSES LAKE 70 46 69 43 71 44 / 0 10 20 20 10 0
WENATCHEE 68 51 68 53 71 54 / 30 20 40 20 30 10
OMAK 70 46 69 45 70 45 / 60 10 30 30 30 10
OTX WATCHES/WARNINGS/ADVISORIES
WA...NONE.
ID...NONE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page