AFOS product AFDOTX
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Displaying AFOS PIL: AFDOTX
Product Timestamp: 2013-06-09 16:40 UTC

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FXUS66 KOTX 091640
AFDOTX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
940 AM PDT Sun Jun 9 2013

.SYNOPSIS...
Warm and dry weather is expected this weekend and into Tuesday. A
pattern change will arrive Tuesday night into Wednesday as an
upper level trough of low pressure develops over the Pacific
Northwest. Temperatures will cool to below average on Wednesday
through the end of the work week. There will also be the
potential for showers and thunderstorms Wednesday through Friday.
The best chances for precipitation will be over the mountainous
regions of the Inland Northwest.



&&

.DISCUSSION...
Morning update: Forecast update sent to increase winds for this
morning and afternoon. The westerly jet stream across southern BC
will gradually sag south into extreme northern WA through the day.
The strong westerly flow across the northwestern US will continue
to produce pressure falls in the lee of the Rockies, focusing over
central Montana. Meanwhile, close examination of the KUIL
sounding taken from NW WA indicates the marine layer has increased
roughly 1000' from yesterday. This will create cross CWA pressure 
gradients, generally from Portland to Kalispell on the order of
10mb through the day resulting in breezy winds for most locations
from the Wenatchee Valley...Columbia Basin...West
Plains...Palouse...and exposed ridgetops. Bufkit data does not
show very strong winds within the mixed layer so most gusts will
be on the order of 25 mph or less but sustained winds of 10 to 20
mph are expected. The exception is along the Waterville Plateau and
Wenatchee River Valley which will experience gusts closer to 30-35
mph...largely in the evening time-frame.

As for temperatures...most locations across Idaho and far eastern
reaches of WA should warm similar to Saturday...but further
west...the air mass will cool 1-2C equating to 2-4 degrees
Fahrenheit of cooling for afternoon highs. /sb

&&

.AVIATION...
18Z TAFS: Flat high pressure aloft will continue to support mostly
sunny skies and dry conditions. Main aviation concern will be
breezy to locally gusty winds across most sites. Most locations
will experience gusts to 25 mph btwn 18-03z. This gusts will increase
near 30-35 mph vcnty of KEAT, especially between 23-04z. The
pattern is also conducive to midlevel turbulent flow in the lee
of the Cascades but given the lack of moisture...wave clouds may
not be present. /sb







&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        77  50  76  49  73  45 /   0   0   0   0   0  10 
Coeur d'Alene  75  47  76  46  72  43 /   0   0   0   0   0  10 
Pullman        76  45  75  44  72  41 /   0   0   0   0   0  10 
Lewiston       86  54  83  52  81  48 /   0   0   0   0  10  20 
Colville       79  46  81  47  78  44 /   0   0   0   0   0  10 
Sandpoint      75  43  75  43  72  42 /   0   0   0   0  10  10 
Kellogg        73  50  74  49  71  43 /   0   0   0   0  10  20 
Moses Lake     84  49  81  49  78  45 /   0   0   0   0  10  10 
Wenatchee      81  54  79  53  75  50 /   0   0   0   0  10  10 
Omak           80  48  79  49  77  46 /   0   0   0   0  10  20 

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...None.
&&

$$