182
FXUS66 KOTX 230720
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1220 AM PDT SUN AUG 23 2026
KEY MESSAGES
- LINGERING THUNDERSTORMS OVER NORTHEAST WA AND NORTH ID THROUGH
SUNDAY MORNING.
- BREEZY WINDS ACROSS THE BASIN ON SUNDAY.
SYNOPSIS
A WEATHER SYSTEM CONTINUES TO IMPACT THE REGION THROUGH SUNDAY
MORNING. ISOLATED TO SCATTERED THUNDERSTORMS PRODUCING GUSTY
OUTFLOW WINDS, ALONG WITH BREEZY WINDS AND LOW RELATIVE
HUMIDITY EXPECTED. SUNDAY WILL REMAIN BREEZY AND DRY, BUT
COOLER. TEMPERATURES WILL WARM AGAIN AT THE START OF NEXT WEEK
WITH BREEZY CONDITIONS RETURNING BY THE MIDDLE OF NEXT WEEK.
DISCUSSION
TODAY: THE LOW WILL BE PASSING THROUGH THE NORTH IDAHO INTO
ALBERTA. THERE IS STILL ENOUGH INSTABILITY TO GENERATE SHOWERS
AND OCCASIONAL ISOLATED THUNDERSTORM OVER NORTHEAST WA AND NORTH
IDAHO THROUGH THE MORNING. THESE AREAS HAVE A ROUND 10-30%
PROBABILITY OF THUNDERSTORMS. THE THUNDERSTORM THREAT WILL
DIMINISH THROUGH THE AFTERNOON AS THE SYSTEM CONTINUES EASTWARD.
THE SYSTEM WILL BRING GUSTY WINDS ACROSS THE BASIN WITH GUSTS
IN THE 20-30 MPH RANGE. WINDS WILL BE BREEZY THROUGH THE DAY
BEFORE DECLINING BY THE EVENING. HIGHS WILL BE COOLER WITH A
RANGE OF UPPER 70S TO 80S EXPECTED.
MONDAY THROUGH SATURDAY: A RIDGE WILL BUILD INTO THE REGION
ALONG THE CONTINENTAL DIVIDE WHILE A TROUGH DIGS IN OFF THE
COAST. A SIMILAR PATTERN WILL BE SETTING UP FROM THIS PAST
WEEKEND. THE RIDGE WILL BE IN PLACE FOR A COUPLE OF DAYS LEADING
TO DRY, WARM PATTERN. HIGHS WILL CLIMB BACK INTO THE 90S.
MODERATE HEATRISK WILL RETURN FOR MOST LOWLAND LOCATIONS ON
TUESDAY. THE TROUGH BEGIN TO PUSH INTO THE REGION ON WEDNESDAY
AND SLOWLY TRACK EAST THROUGH THE END OF THE WEEK. ENSEMBLES
HAVE WEAK INSTABILITY OVER THE CASCADES, NORTHERN MOUNTAINS, AND
THE IDAHO PANHANDLE. PRECIPITABLE WATER AMOUNTS ARE 0.5-0.75 OF
AN INCH. THESE AREAS WILL LIKELY HAVE ISOLATED SHOWERS WITH AN
OCCASIONAL LIGHTNING STRIKE. NBM HAS AROUND A 10% PROBABILITY OF
LIGHTNING. WINDS WILL INCREASE THROUGH THE OKANOGAN VALLEY AND
WATERVILLE PLATEAU WITH GUSTS IN THE 20-30 MPH RANGE. WHILE IT
DOES NOT BRING IN A MEANINGFUL AMOUNT OF RAIN, THE TROUGH WILL
DROP HIGHS BACK INTO THE 80S THROUGH THE END OF THE WEEK. /JDC
AVIATION
06Z TAFS: LINGERING INSTABILITY AND AN INCOMING SYSTEM CONTINUE
CHANCES FOR ISOLATED TO SCATTERED THUNDERSTORMS THROUGH THE
INTO SUNDAY MORNING. GREATEST RISK WILL BE OVER NORTHEAST
WASHINGTON AND THE IDAHO PANHANDLE. WINDS WILL REMAIN ELEVATED
OVERNIGHT INTO SUNDAY MORNING AS THE SYSTEM TRACKS INLAND WITH
GUSTS INTO THE MID 20-30 KTS. SMOKE FROM THE CASCADE FIRES WILL
CONTINUE TO IMPACT KEAT AT TIMES.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: LOW CONFIDENCE
FOR TS AT TERMINALS BUT MODERATE CONFIDENCE FOR OUTFLOW WINDS
TO IMPACT MOST TERMINALS WITH SPEEDS OF AT LEAST 20-30 MPH.
-----------------------
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 80 53 86 55 93 60 / 0 0 0 0 0 0
COEUR D'ALENE 79 52 86 55 93 60 / 0 0 0 0 0 0
PULLMAN 76 45 86 49 93 54 / 0 0 0 0 0 10
LEWISTON 85 56 92 61 98 65 / 0 0 0 0 0 10
COLVILLE 78 43 86 46 93 51 / 30 10 0 0 0 0
SANDPOINT 76 46 82 50 90 55 / 10 0 0 0 0 0
KELLOGG 76 51 84 54 91 57 / 10 0 0 0 0 10
MOSES LAKE 84 52 89 57 94 59 / 0 0 0 0 0 0
WENATCHEE 82 61 87 64 92 68 / 0 0 0 0 0 0
OMAK 83 53 88 57 93 62 / 10 0 0 0 0 0
OTX WATCHES/WARNINGS/ADVISORIES
WA...RED FLAG WARNING UNTIL 11 AM PDT THIS MORNING FOR SELKIRK
MOUNTAINS OF NORTHEAST WASHINGTON (ZONE 700).
RED FLAG WARNING UNTIL 5 AM PDT EARLY THIS MORNING FOR EASTERN
COLUMBIA BASIN -PALOUSE -SPOKANE AREA (ZONE 708)-
FOOTHILLS OF NORTHEAST WASHINGTON (ZONE 701).
AIR QUALITY ALERT UNTIL 2 PM PDT MONDAY FOR CENTRAL CHELAN
COUNTY-OKANOGAN HIGHLANDS-OKANOGAN VALLEY-UPPER COLUMBIA
BASIN-WATERVILLE PLATEAU-WENATCHEE AREA-WESTERN CHELAN
COUNTY-WESTERN OKANOGAN COUNTY.
ID...RED FLAG WARNING UNTIL 11 AM PDT THIS MORNING FOR NORTHERN AND
CENTRAL IDAHO PANHANDLE (ZONE 101).
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