407
FXUS66 KPDT 012115
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
215 PM PDT THU OCT 1 2026
KEY MESSAGES
- |AREA OF HIGH PRESSURE BUILDS OVER THE PACIFIC NORTHWEST, WITH
DRY AND CALM CONDITIONS PREVAILING THROUGH AT LEAST THE NEXT
COUPLE OF DAYS.
- TEMPERATURES CONTINUE TO BUILD AND INCREASE UP TO 15-25
DEGREES ABOVE NORMAL HIGH TEMPERATURES BY EARLY NEXT WEEK.
- LIGHT WINDS CONTINUE WITH DIURNALLY DRIVEN SPEEDS THROUGH
PEAK HEATING HOURS.
DISCUSSION
NOT MUCH ACTIVITY DISPLAYING ON RADAR OR SATELLITE CURRENTLY.
SYNOPTIC FLOW FAVORS A DRY AND WARM PATTERN WITH A RIDGE
CURRENTLY PUSHING INTO THE AREA. WILL SEE THE RIDGE CONTINUE TO
AMPLIFY THROUGH THE WEEKEND AND EARLY NEXT WEEK OVER THE PACIFIC
NORTHWEST. AS THE RIDGE CONTINUES TO BUILD, HIGH TEMPERATURES
WILL DRIVE UP TO 15-25 DEGREES ABOVE NORMAL ON MONDAY (70-90%
CHANCE) WITH HIGHS IN THE MID TO UPPER 80S IN THE LOWER
ELEVATION AREAS. THERE IS A 50-70% CHANCE WE CAN SEE THE RIDGE
AMPLIFY ENOUGH TO ALLOW TEMPERATURES TO REACH AT/ABOVE 90
DEGREES, ESPECIALLY IN SOME OF THE COLUMBIA BASIN AREA.
AS FAR AS RISK GOES, HEATRISK IS FAIRLY LOW WITH A CATEGORY '1',
THOUGH GUIDANCE PICKS UP ON THE POSSIBILITY THAT WE CAN SEE
AREAS OF MODERATE HEATRISK DEVELOP ON MONDAY ACROSS PARTS OF
CENTRAL OREGON (20-40% CHANCE) AND PARTS OF THE COLUMBIA BASIN
(UP TO 10% CHANCE). THOUGH THE OUTLOOK FOR WIDESPREAD MODERATE
HEATRISK APPEARS TO REMAIN SMALL GIVEN THE TIME OF YEAR AND THAT
DAYS ARE GETTING SHORTER AS WE HEAD INTO WINTER. GUIDANCE IS IN
AGREEMENT THAT TEMPERATURES WILL DROP SLIGHTLY OVER THE NEXT
DAY, THOUGH HIGHS WILL REMAIN IN THE 80S THROUGH MID NEXT-WEEK.
AVIATION /18Z TAFS THROUGH 18Z FRIDAY/
VFR CONDITIONS ARE VERY LIKELY (90% CHANCE OR HIGHER) FOR ALL
TAF SITES THROUGH THE PERIOD; THERE IS A VERY LOW (10%) CHANCE
OF VSBY REDUCTIONS OVERNIGHT INTO FRIDAY MORNING AT RDM, WITH
EVEN LOWER CHANCES ELSEWHERE. OTHERWISE, PREDOMINANTLY FEW-BKN
CIRRUS WILL OVERSPREAD THE PACIFIC NORTHWEST FOR THE NEXT 24
HRS, WITH LOW CONFIDENCE (30% OR LESS) IN SOME PERIODIC MID-
LEVEL STRATUS. WINDS WILL BE LIGHT AND DIURNALLY/TERRAIN DRIVEN
THROUGH THE PERIOD.
PRELIMINARY POINT TEMPS/POPS
PDT 47 78 47 79 / 0 0 0 0
ALW 53 79 52 82 / 0 0 0 0
PSC 47 81 49 82 / 0 0 0 0
YKM 50 80 50 79 / 0 0 0 0
HRI 48 81 50 80 / 0 0 0 0
ELN 45 75 46 75 / 0 0 0 0
RDM 42 81 42 81 / 0 0 0 0
LGD 48 81 47 82 / 0 0 0 0
GCD 47 82 47 88 / 0 0 0 0
DLS 54 83 53 83 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...NONE.
OR...NONE.
DISCUSSION...95
AVIATION...86
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page