494
FXUS66 KPDT 302023
AFDPDT
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PENDLETON OR
123 PM PDT WED SEP 30 2026
KEY MESSAGES
- RIDGE BUILDING INTO THE AREA, ALLOWING WARMER TEMPERATURES TO
BUILD WITH DRY CONDITIONS OVER THE AREA.
- TEMPERATURES WILL GRADUALLY WARM 5 TO 15 DEGREES ABOVE AVERAGE
BY THE WEEKEND (70-80% CHANCE).
- LIGHT AND VARIABLE WINDS WITH DIURNAL SPEEDS PREVAIL THROUGH
THE WEEK.
DISCUSSION
SATELLITE SHOWS MID TO UPPER LEVEL CLOUDS ACROSS THE CENTRAL
PART OF THE CWA. NOT MUCH ELSE TO TALK ON THAT SINCE WE'RE NOT
ANTICIPATING ANY PRECIPITATION WITH ZONAL FLOW ALOFT PROMOTING
DRY CONDITIONS. GOING THROUGH FRIDAY, A SHORTWAVE WILL PROPAGATE
THROUGH THE PACNW BRINGING SOME PRECIP CHANCES (UP TO 10%) IN
THE NORTHERN PARTS OF KITTITAS COUNTY. OTHERWISE, THE WEATHER
LOOKS TO BE CALM AND DRY WITH A RIDGE PUSHING ON-SHORE BY
FRIDAY/SATURDAY WITH THE RIDGE AXIS PUSHING OVER THE AREA.
TEMPERATURES WILL GRADUALLY WARM THROUGH THE WEEKEND WITH HIGH
TEMPERATURES REACHING 5 TO 15 DEGREES ABOVE AVERAGE.
DESPITE ABOVE AVERAGE TEMPERATURES, WIDESPREAD MINOR HEATRISK
'1' WILL DEVELOP THROUGH THE WEEKEND (70-90% CHANCE) WITH 30-40%
CHANCES OF MODERATE '2' HEATRISK DEVELOPING IN CENTRAL OREGON ON
SUNDAY AT THIS TIME. GUIDANCE IS IN GOOD AGREEMENT THAT THE DRY
PATTERN WILL PREVAIL THROUGH AT LEAST MID NEXT-WEEK (50-70%
CHANCE) WITH THE POSSIBILITY OF SOME ELEVATED FIRE WEATHER
CONDITIONS DEVELOPING.
AVIATION /18Z TAFS THROUGH 18Z THURSDAY/
VFR CONDITIONS ARE FORECAST THROUGH THE PERIOD, THOUGH LOW
STRATUS DRAPED OVER NORTH-CENTRAL TO NORTHEAST OREGON AND SOUTH-
CENTRAL TO SOUTHEAST WASHINGTON WILL PRESENT LOW (30% OR LESS)
CHANCES OF MVFR CIGS AT PDT/ALW THROUGH MORNING. THE BASE OF
THE STRATUS DECK SHOULD CONTINUE TO RISE TO 4-5 KFT AGL THROUGH
AFTERNOON AND GRADUALLY DISSIPATE. WINDS WILL BE PREDOMINANTLY
LIGHT AND DIURNALLY DRIVEN, SUSTAINED AT 10 KTS OR LESS.
PRELIMINARY POINT TEMPS/POPS
PDT 46 74 46 76 / 0 0 0 0
ALW 49 75 51 78 / 0 0 0 0
PSC 48 77 49 79 / 0 0 0 0
YKM 49 74 50 78 / 0 0 0 0
HRI 48 76 49 78 / 0 0 0 0
ELN 43 69 46 75 / 0 0 0 0
RDM 42 78 43 79 / 0 0 0 0
LGD 45 76 48 81 / 0 0 0 0
GCD 45 80 48 84 / 0 0 0 0
DLS 52 80 55 82 / 0 0 0 0
PDT WATCHES/WARNINGS/ADVISORIES
WA...NONE.
OR...NONE.
DISCUSSION...95
AVIATION...86
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