Area Forecast Discussion
Issued by NWS Pendleton, OR

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS66 KPDT 211000
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
300 AM PDT Sat Oct 21 2017

.SHORT TERM...Today through Monday afternoon...A very progressive
pattern over the next several days beginning with a warm front
moving over the forecast area today, which will bring rain at times
to the interior Pacific Northwest. Snow levels will be around 3500
feet in the Blue Mountains this morning and then rise rapidly this
afternoon to 5000 feet in the Blues. The warm front and attendant
rain will begin lifting northward tonight resulting in rain ending
this evening in central and north central Oregon and along the
southern foothills of the Blue Mountains. Overnight prior to
daybreak on Sunday rain should be ending in the Lower Columbia Basin
and the Yakima Valley.

.LONG TERM...Monday night through Friday...An upper level ridge will
persist over WA and OR Monday night Tuesday with dry northwest flow.
Subsidence from the ridge will bring warm days...clear skies and
light winds. Monday night and Tuesday night light winds and clear
skies will provide good radiational cooling. Patchy late night and
early morning is possible in the Columbia Basin. A frontal system
will be moving through the area Wednesday with some rain for the
Cascades...foothills of the Blues...and the mountains of northeast
Oregon. Behind this system, the models are coming into agreement on
stronger northerly flow and cooler air spreading into the area from
the north as high pressure rebuilds offshore. Temperatures will be
above seasonal averages Tuesday and Wednesday and then cool to below
normal during the rest of the week. Coonfield

&&

.AVIATION...vfr conditions will give way to areas of mvfr after
10z as clouds lower and showers move into the region especially at
taf sites krdm and kbdn and kdls. The areas of mvfr conditions will
effect the remainder of the taf sites after 15z such as kalw and
kpdt and kpsc. Also the winds will increase after 18z with gusts
over 30 kts. The gusts may approach 40 kts after 01z.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  59  53  67  47 / 100  70  40  10
ALW  57  52  68  49 / 100 100  50  10
PSC  57  53  69  46 /  90  60  10  10
YKM  53  46  65  41 / 100  70  10  10
HRI  59  52  69  46 /  90  40  20  10
ELN  49  43  60  40 / 100  90  10  10
RDM  59  46  63  40 /  90  20  20  10
LGD  48  44  56  42 / 100  90  70  30
GCD  51  47  57  44 / 100  50  40  20
DLS  58  53  67  48 / 100  70  60  10

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...Wind Advisory from 5 PM this afternoon to 8 AM PDT Sunday for
     ORZ507-508-510-511.

     Winter Weather Advisory from 8 AM this morning to 11 PM PDT this
     evening for ORZ050.

     Winter Weather Advisory until 11 PM PDT this evening for ORZ502.

     Winter Weather Advisory until 5 PM PDT this afternoon for ORZ503-
     506.

     Wind Advisory from 1 PM this afternoon to 11 PM PDT this evening
     for ORZ049.

WA...Wind Advisory from 5 PM this afternoon to 8 AM PDT Sunday for
     WAZ521.

     Winter Weather Advisory until 11 PM PDT this evening for WAZ030.

     Flash Flood Watch from 7 AM PDT this morning through Sunday
     morning for WAZ520.

&&

$$

99/76/76


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.