144
FXUS66 KOTX 011726
AFDOTX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1026 AM PDT TUE JUL 1 2025
KEY MESSAGES
- HOT TUESDAY INCLUDING MODERATE TO LOCALLY MAJOR HEATRISK.
- A 15% CHANCE OF THUNDERSTORMS PRODUCING LITTLE RAIN WEDNESDAY.
- DRY AND WINDY CONDITIONS WEDNESDAY IN CENTRAL WASHINGTON WITH
ELEVATED TO CRITICAL FIRE WEATHER CONCERNS.
- NOT AS HOT THURSDAY AND INDEPENDENCE DAY WITH HIGH
TEMPERATURES IN THE 80S
SYNOPSIS
HOT TEMPERATURES WILL OCCUR ON TUESDAY WITH HIGH TEMPERATURES
IN THE 90S WITH THE HOTTEST LOCATIONS NEAR 100 DEGREES. A WEAK
WEATHER SYSTEM TRACKING THROUGH WEDNESDAY WILL DELIVER A SLIGHT
CHANCE OF SHOWERS AND THUNDERSTORMS PRODUCING LITTLE RAIN. DRY
AND WINDY CONDITIONS WILL ALSO LEAD TO INCREASED FIRE WEATHER
CONCERNS ON WEDNESDAY IN CENTRAL WASHINGTON. TEMPERATURES WILL
COOL INTO THE 80S FOR THURSDAY AND INDEPENDENCE DAY.
DISCUSSION
TODAY THROUGH TONIGHT: TEMPERATURES CONTINUE TO INCREASE DUE TO THE
RIDGE BEING DIRECTLY OVER THE STATE OF WASHINGTON. LOW TEMPERATURES
THIS MORNING WILL STRUGGLE TO FALL BELOW 60 FOR MUCH OF THE AREA.
LATER TODAY, HIGH TEMPERATURES WILL BE IN THE MID TO HIGH 90S IN
MOST AREAS, WITH SOME AREAS SUCH AS MOSES LAKE, OMAK, AND LEWISTON
REACHING TRIPLE DIGITS. WITH WIDESPREAD MODERATE HEAT RISK VALUES
AND AN EXPANSION OF LOCAL MAJOR HEAT RISK VALUES, TODAY WILL BE THE
HOTTEST DAY OF THE WARMUP. THERE IS A HEAT ADVISORY VALID THROUGH
9PM THIS EVENING. WITH THESE HEAT RISK VALUES, PEOPLE WITHOUT
ADEQUATE COOLING AND HYDRATION ARE AT HIGHER RISK FOR HEAT-RELATED
ILLNESSES.
WEDNESDAY THROUGH THURSDAY: A LOW PRESSURE SYSTEM OFF THE COAST OF
BRITISH COLUMBIA WILL BRING A TROUGH THROUGH TOMORROW, RESULTING IN
A CHANCE FOR THUNDERSTORMS, GUSTY CASCADE GAP WINDS, AND VERY DRY
CONDITIONS. MOISTURE FROM OREGON WILL MOVE NORTHEASTWARD INTO THE
FORECAST AREA, BRINGING THUNDERSTORM CHANCES TO FAR EASTERN
WASHINGTON AND THE NORTHERN IDAHO PANHANDLE. THOUGH CHANCES FOR POPS
INCREASE IN THESE AREAS, CHANCES WILL BE SMALL (15 PERCENT), AND
RESULT IN VERY LITTLE RAINFALL. MAIN CONCERNS WITH ANY ISOLATED
THUNDERSTORMS THAT FORM WILL BE LIGHTNING AND THE POTENTIAL FOR FIRE
STARTS. IN CENTRAL WASHINGTON, THE TROUGH MOVING OVER THE LEE OF THE
CASCADES WILL BRING GUSTY WINDS TO THE WENATCHEE, WATERVILLE
PLATEAU, MOSES LAKE, AND UPPER COLUMBIA BASIN AREAS. THESE WINDS
COMBINED WITH RELATIVE HUMIDITY VALUES LOWERING TO THE TEENS WILL
LEAD TO INCREASED FIRE WEATHER RISKS. A FIRE WEATHER WATCH HAS BEEN
ISSUED FOR THE OKANOGAN VALLEY, CENTRAL WASHINGTON CASCADES,
WATERVILLE PLATEAU, AND WESTERN COLUMBIA BASIN AREAS FROM WEDNESDAY
AFTERNOON THROUGH WEDNESDAY EVENING.
THURSDAY THROUGH SUNDAY: ENSEMBLE CLUSTERS ARE IN BETTER AGREEMENT
OF LOWER HEIGHTS STICKING AROUND THROUGH SATURDAY OF NEXT WEEKEND,
WHICH WILL ALLOW TEMPERATURES TO DROP TO SLIGHTLY ABOVE NORMAL BY
INDEPENDENCE DAY. CASCADE GAP WINDS WILL REMAIN BREEZY ON THURSDAY
AND FRIDAY. RELATIVE HUMIDITIES WILL SLIGHTLY INCREASE, BRINGING
VALUES BACK INTO THE 20S. BY SUNDAY, LONG RANGE MODELS SHOW ANOTHER
RIDGE MOVING INTO THE AREA, INCREASING TEMPERATURES BACK INTO THE
90S. CLUSTERS OVERALL FAVOR CONTINUED RIDGING, AND THE CPC'S 8 TO 10
DAY OUTLOOK SHOWS CHANCES FOR ABOVE NORMAL TEMPERATURES AND NEAR
NORMAL PRECIPITATION. /AS
AVIATION
18Z TAFS: VFR CONDITIONS WILL PREVAIL THROUGH THE NEXT 24
HOURS. SOME HI-RES MODELS ARE SHOWING ELEVATED SHOWERS/ISOLATED
THUNDERSTORMS MOVING INTO EASTERN WASHINGTON AFTER 10Z WEDNESDAY
BUT CONFIDENCE IS TOO LOW TO INCLUDE IN ANY OF THE TAFS. A
BREAKDOWN OF THE UPPER LEVEL RIDGE WILL INCREASE ONSHORE FLOW
TUESDAY EVENING WITH BREEZY WINDS THROUGH THE CASCADE GAPS
IMPACTING EAT/EPH.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: HIGH CONFIDENCE
IN CONDITIONS REMAINING VFR. LOW CONFIDENCE IN SHOWERS AT ANY
TAF SITE EARLY WEDNESDAY MORNING, BUT ANY SHOWERS WILL BRING THE
RISK OF ISOLATED LIGHTNING STRIKES AND GUSTY WINDS. JW
-----------------------
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 96 64 91 58 84 55 / 0 0 20 10 0 10
COEUR D'ALENE 95 64 90 58 83 56 / 0 0 20 10 0 10
PULLMAN 93 60 86 54 79 52 / 0 0 20 10 10 10
LEWISTON 101 69 96 63 90 62 / 0 0 20 10 10 10
COLVILLE 95 55 92 49 83 47 / 0 0 20 10 0 0
SANDPOINT 92 58 88 54 81 52 / 0 0 20 10 0 10
KELLOGG 92 68 87 60 79 59 / 0 0 20 10 10 10
MOSES LAKE 100 63 95 57 87 55 / 0 0 0 0 0 0
WENATCHEE 99 68 92 62 84 59 / 0 0 0 0 0 0
OMAK 99 62 95 56 87 55 / 0 0 0 0 0 0
OTX WATCHES/WARNINGS/ADVISORIES
WA...HEAT ADVISORY UNTIL 9 PM PDT THIS EVENING FOR CENTRAL CHELAN
COUNTY-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-WESTERN OKANOGAN COUNTY.
FIRE WEATHER WATCH FROM WEDNESDAY AFTERNOON THROUGH WEDNESDAY
EVENING FOR FOOTHILLS OF CENTRAL WASHINGTON CASCADES
(ZONE 705)-OKANOGAN VALLEY (ZONE 703)-WATERVILLE PLATEAU
(ZONE 706)-WESTERN COLUMBIA BASIN (ZONE 707).
ID...HEAT ADVISORY UNTIL 9 PM PDT THIS EVENING FOR COEUR D'ALENE
AREA-IDAHO PALOUSE-LEWIS AND SOUTHERN NEZ PERCE COUNTIES-
LEWISTON AREA-NORTHERN PANHANDLE.
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page