482
FXUS66 KPDT 111610
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
910 AM PDT THU JUN 11 2026
KEY MESSAGES
- DRY AND WARM TREND CONTINUES THROUGH THE EARLY PART OF NEXT
WEEK.
- LOCALLY BREEZY TO POSSIBLE WINDY CONDITIONS POSSIBLE THROUGH
THE WEEKEND INTO EARLY NEXT WEEK.
- POSSIBLE FIRE WEATHER CONCERNS DEVELOPING THIS WEEKEND INTO
EARLY NEXT WEEK.
DISCUSSION
CURRENT CONDITIONS DEPICTED BY SATELLITE AND RADAR SHOWS A
CLEAR, DRY WEATHER PATTERN OVER THE AREA. THIS IS IN THANKS TO
THE RIDGE SITUATED OVER THE PACIFIC OCEAN CURRENTLY, THAT WILL
CONTINUE TO MOSTLY INFLUENCE THE PATTERN OVER THE NEXT WEEK. THE
RIDGE IS FORECASTED (CONFIDENCE OF GREATER THAN 90 PERCENT
CHANCE) TO CONTINUE TO AMPLIFY THROUGH THE WEEKEND, ALLOWING FOR
DRY CONDITIONS TO STRONGLY PERSIST. GUIDANCE IS IN GOOD
AGREEMENT THAT BY FRIDAY, A SHORTWAVE WILL PASS JUST THROUGH THE
PACNW, ALLOWING PRESSURE GRADIENTS TO TIGHTEN AND BRING BREEZY
15 TO 25 MPH GUSTS ACROSS THE AREA (GREATER THAN 90 PERCENT
CONFIDENCE). FIRE WEATHER CONCERNS START TO DEVELOP OVER THE
WEEKEND WITH MINIMUM RH'S DROPPING CLOSE TO 10-15% THROUGH MUCH
OF THE AREA BY SUNDAY (60 TO 80 PERCENT CHANCE) AND PERSIST
THROUGH EARLY NEXT WEEK.
BY TUESDAY, GUIDANCE BREAKS THE RIDGE DOWN WHILE DEVELOPING
BREEZY TO LOCALLY WINDY CONDITIONS INTO THE LOWER ELEVATION
ZONES. CURRENT NBM MEMBERS ADVERTISE 40 TO 60 PERCENT CHANCES OF
THE KITTITAS VALLEY DEVELOPING WIND ADVISORY CRITERIA WINDS ON
TUESDAY & 15 TO 35 PERCENT CHANCES ALONG THE DALLES AND PARTS OF
THE COLUMBIA RIVER GORGE. THE WARMING TREND WILL LAST THROUGH
TUESDAY (70 TO 90 PERCENT CONFIDENCE) WITH THE RIDGE BREAKING
DOWN. NBM CURRENTLY BRINGS TUESDAY HIGH TEMPERATURES AS HIGH AS
96-99 DEGREES IN THE LOWER ELEVATION AREAS. THE NBM IS CURRENTLY
FORECASTING A 40 TO 60 PERCENT CHANCE THAT PARTS OF THE
COLUMBIA BASIN (INCLUDING THE TRI- CITIES) WILL REACH ABOVE 100
DEGREES, WITH YAKIMA ADVERTISING A 30 TO 50 PERCENT CHANCE OF
EXCEEDING 100 DEGREES. REGARDLESS, VERY HOT TEMPERATURES WITH
WIDESPREAD '2' TO '2.5' VALUES ARE EXPECTED BY TUESDAY (60 TO 80
PERCENT CHANCE).
AVIATION /18Z TAFS THROUGH 18Z FRIDAY/
VFR CONDITIONS TO
PREVAIL THROUGH THE PERIOD. WINDS AT SITE DLS WILL INCREASE TO
AROUND 15KTS WITH GUSTS UP TO 25KTS LATE THIS AFTERNOON INTO THE
EVENING. OTHERWISE, WINDS WILL BE LIGHT AT ALL SITES THROUGH THE
PERIOD. LAWHORN/82
FIRE WEATHER
DRYING AND WARMING CONDITIONS WILL CONTINUE TO BUILD THROUGH
EARLY NEXT WEEK, ALONG WITH SOME BREEZY CONDITIONS TO OCCUR
STARTING THROUGH THE WEEKEND. THIS WILL MESH-UP TO BRING RFW
CRITERIA TO SEVERAL AREAS ACROSS THE COLUMBIA BASIN THROUGH
CENTRAL OREGON (MEDIUM CONFIDENCE OF 30 TO 50 PERCENT). MAIN
DAYS OF CONCERN AS OF NOW WILL BE TUESDAY THROUGH WEDNESDAY WITH
MIN RH'S DROPPING DOWN TO 10 TO 15 PERCENT ACROSS MOST OF
CENTRAL OREGON AND OTHER LOWER ELEVATION SPOTS. BREEZY TO
POSSIBLY WINDY CONDITIONS WILL DEVELOP DURING THE DRIEST TIME OF
THE DAY, WITH SUSTAINED WINDS OF 15 TO 20 MPH ACROSS THE
COLUMBIA BASIN (40 TO 60 PERCENT CHANCE CONFIDENCE) AND 10 TO
15 MPH SUSTAINED WINDS THROUGH CENTRAL OREGON (40 TO 60 PERCENT
CHANCE CONFIDENCE).
PRELIMINARY POINT TEMPS/POPS
PDT 79 49 80 49 / 0 0 0 0
ALW 79 53 81 54 / 0 0 0 0
PSC 83 51 85 53 / 0 0 0 0
YKM 82 51 85 53 / 0 0 0 0
HRI 82 52 84 52 / 0 0 0 0
ELN 77 48 78 49 / 0 0 0 0
RDM 80 44 82 44 / 0 0 0 0
LGD 78 44 77 45 / 0 0 0 0
GCD 81 43 82 43 / 0 0 0 0
DLS 82 55 84 56 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...NONE.
OR...NONE.
DISCUSSION...95
AVIATION...82
FIRE WEATHER...95
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