838
FXUS66 KOTX 010756
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1256 AM PDT MON JUN 1 2026
KEY MESSAGES
- SHOWERY CONDITIONS FOR NORTHEAST WASHINGTON AND NORTH IDAHO
THROUGH TUESDAY. BEST CHANCES FOR BENEFICIAL SHOWERS MONDAY.
- UNSETTLED CONDITIONS MID TO LATE NEXT WEEK WITH ANOTHER PAIR
OF SYSTEMS.
SYNOPSIS
MINOR IMPACTS ARE EXPECTED THIS WEEK. A SHOWERY REGIME EARLY
THIS WEEK WILL BE REPLACED BY A WARMER AND MORE UNSTABLE
REGIME BY WEDNESDAY. THERE IS A 10-30% CHANCE OF THUNDERSTORMS
ACROSS THE INLAND NORTHWEST WEDNESDAY AFTERNOON AND EVENING.
BEHIND THIS SYSTEM, COOLER AND SHOWERY CONDITIONS RETURN.
DISCUSSION
TODAY THROUGH TUESDAY: THE PACIFIC NORTHWEST CONTINUES TO BE
UNDER A WEAK RIDGE IN-BETWEEN A QUASI-STALLED LOW OVER SOUTHERN
ALBERTA/NORTHERN MONTANA AND AN APPROACHING GULF OF ALASKA LOW.
THE SETUP WILL BRING DRY, WARMING TREND FOR MOST OF THE INLAND
NORTHWEST. THE EXCEPTIONS WILL BE IDAHO PANHANDLE AND NORTHEAST
WASHINGTON AS THE LOW’S WRAP AROUND MOISTURE MOVES ACROSS THESE
AREAS. PRECIP CHANCES WILL BE 20-40% FOR NORTHEAST WASHINGTON
AND THE CENTRAL IDAHO PANHANDLE. CHANCES FOR NORTH IDAHO
PANHANDLE ARE 60-80%. THE 25-75 PROBABILITY PERCENTILES RANGE
FROM A FEW HUNDREDTHS TO A QUARTER OF AN INCH. HIGH TEMPERATURES
WILL BE DEPENDENT ON THE AMOUNT OF CLOUDS BEING PUSHED INTO THE
REGION. THE RANGE FOR NOW IS UPPER 60S TO LOW 80S. OVERNIGHT
LOWS WILL BE IN THE 40S TO LOW 50S.
WEDNESDAY THROUGH SUNDAY: THE UPPER LEVEL FLOW PATTERN SHIFTS
TO A WEST-EAST PATTERN AND PUSHING THE STALLED LOW OUT OF THE
MONTANA AREA. THE GULF OF ALASKA WILL PUSH A SHORTWAVE THROUGH
THE REGION. SHOWER ACTIVITY WILL SPREAD FROM THE CASCADES TO THE
IDAHO PANHANDLE ON WEDNESDAY THROUGH THURSDAY MORNING.
INSTABILITY WITH THE WAVE HAS THUNDER PROBABILITIES AT 10-30%
FOR THE HIGHER TERRAIN AND UP TO 10% FOR THE LOWLANDS. THERE IS
LOW CONFIDENCE ON PRECIP AMOUNTS BUT CURRENTLY THE RANGE IS NONE
TO A QUARTER OF INCH FOR MOST. PORTIONS OF THE IDAHO PANHANDLE
COULD SEE HIGHER AMOUNTS NEAR HALF AN INCH THROUGH THURSDAY
MORNING. FRIDAY WILL BE QUIET AS A SMALL RIDGE PATTERN DEVELOPS
BETWEEN THE EXITING WAVE AND INCOMING LOW. ENSEMBLES CONTINUE TO
STRUGGLE WITH THE INCOMING LOW. IT WILL MOVE INTO THE PACIFIC
NORTHWEST THROUGH THE WEEKEND. THERE IS STILL LOW CONFIDENCE ON
TIMING AND TRACK. EITHER WAY, COOLER CONDITIONS WITH INCREASED
PRECIP CHANCES ARE EXPECTED. HIGHS WILL BE IN THE 60S TO LOW
70S. OVERNIGHT LOWS WILL BE IN THE 40S. /JDC
AVIATION
06Z TAFS: THE INLAND NORTHWEST REMAINS UNDER THE INFLUENCE OF
SUBTLE RIDGING TO THE WEST AND A STATIONARY UPPER-LEVEL LOW IN
WESTERN MONTANA. MOISTURE FROM THE LOW WILL BRING A CONSISTENT
STREAM OF HIGH LEVEL CLOUDS ACROSS FAR EASTERN WASHINGTON AND
NORTH IDAHO. SHOWER CHANCES (40-80%) BEGIN TO INCREASE ACROSS
THE IDAHO PANHANDLE, INCLUDING KCOE, KSZT, AND BONNERS FERRY
AFTER 12Z MONDAY, WITH THE HIGHER CHANCES ALONG THE ID/MT
BORDER. SHOWER CHANCES (20-60%) EXPAND INTO NORTHEAST
WASHINGTON, INCLUDING KGEG AND KSFF, AFTER 18Z-20Z MONDAY.
PRECIP CHANCES DIMINISH AFTER 02Z TUESDAY.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
HIGH CONFIDENCE IN VFR CONDITIONS FOR ALL TAF SITES.
-----------------------
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 45 72 48 77 51 / 10 10 0 0 0 40
COEUR D'ALENE 63 46 71 49 77 53 / 30 10 0 0 0 40
PULLMAN 66 43 71 45 75 48 / 0 0 0 0 0 50
LEWISTON 74 50 77 52 81 55 / 0 0 0 0 0 50
COLVILLE 68 40 75 43 78 46 / 10 10 0 0 0 40
SANDPOINT 60 45 68 47 75 50 / 60 20 20 0 0 40
KELLOGG 63 45 70 47 78 51 / 60 10 10 0 0 50
MOSES LAKE 78 48 80 52 83 50 / 0 0 0 0 0 20
WENATCHEE 79 56 80 58 80 56 / 0 0 0 0 30 20
OMAK 75 49 79 54 82 54 / 0 10 0 0 0 30
OTX WATCHES/WARNINGS/ADVISORIES
WA...NONE.
ID...NONE.
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