from: NWS Pendleton, OR
970
FXUS66 KPDT 111028
AFDPDT
Area Forecast Discussion
National Weather Service Pendleton OR
328 AM PDT Fri Sep 11 2026
.KEY MESSAGES...
- Dry weather today and tonight.
- Isolated thunderstorms Saturday and Sunday.
- Widespread rain Saturday through early Sunday.
- Below normal temperatures through the next week.
&&
.DISCUSSION...
Westerly flow will be over the region today, which will bring
dry weather. The flow will become more southwesterly tonight in
advance of low pressure which will move south then southeast
over the Pacific and then approach the Washington and Oregon
coasts on Saturday.
The low will then move onshore in Oregon Saturday evening and
move northeast towards southern Canada during Sunday, bringing
rain. Precipitation should end from west to east during the day
on Sunday, with all rain ended by Sunday evening/night.
Rainfall amounts during the day on Saturday will not be very
much and mainly confined to the mountains. QPF amounts should
mainly be 0.10 inches or less. The more widespread rain is
expected to move in during the evening and overnight. QPF
amounts vary widely between the models with the NAM being on the
lower side and the GFS and ECMWF having some of the higher
amounts, depending on location. Current forecast values have
=39
mph are >60 percent in many of these areas. Depending on how
things develop, it is possible wind headlines may be needed at
some point.
Dry northwest flow will then move in for Monday. Another low and
trough will then drop down from Canada on Tuesday. There is some
discrepancy as to how quickly this low exits the area, but it is
expected to be dry or mainly dry at this time, but bears
watching.
Temperatures will be below normal through the weekend and into
next week, with Sunday being the coolest day. Temperatures will
average 5 to 10 degrees below normal, but will probably be 15
degrees below normal on Sunday.
&&
.AVIATION /12Z TAFS THROUGH 12Z SATURDAY/...
VFR conditions are expected through the TAF period. Winds will
mainly be 10 kts or less, except at DLS which will have some
gusty winds to around 20 kts this morning before decreasing to
10 kts or less this afternoon.
&&
.Preliminary Point Temps/PoPs...
PDT 72 46 72 45 / 0 0 10 100
ALW 74 52 74 50 / 0 0 0 100
PSC 77 49 77 46 / 0 0 0 90
YKM 74 52 73 49 / 0 0 20 90
HRI 76 47 76 45 / 0 0 0 90
ELN 70 48 69 44 / 0 0 10 90
RDM 74 39 66 35 / 0 0 40 80
LGD 73 46 76 44 / 0 0 30 100
GCD 75 46 77 43 / 0 0 30 90
DLS 76 53 74 51 / 0 0 20 80
&&
.PDT WATCHES/WARNINGS/ADVISORIES...
WA...None.
OR...None.
&&
$$
DISCUSSION...77
AVIATION...77
NWS PDT Office Area Forecast Discussion
