Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 041824
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
1124 AM PDT SAT JUL 4 2015

.SYNOPSIS....
Hot and dry weather will be featured for the Independence Day
weekend. Today winds will shift to the north and increase as a
front sags in from Canada. Breezy conditions continue on Sunday.
It is still looking dry and warm into the beginning of next week.


&&

.DISCUSSION...
Morning update to make some changes to the current suite of red
flag warnings. Main changes were to extend the current highlights
into Sunday for areas stretching from Okanogan County into the
Western Basin and add the northeastern mountains of Washington.

The dry cold front will push southward through the region this
evening between 6-10PM increasing wind gusts across the region.
The concerning components of this front are the potential for wind
gusts 30-40 mph and the degree of dry air coming in behind the
fropa. RH`s at 850mb or roughly 4000 feet are expected to dip
between 10-20%. This will likely lead to little to no recoveries
in the mountains and if this mixes down into the valleys, should
also result in poor recoveries into Sunday morning. I believe we
will creep out of critical humidity thresholds some by 5AM but
return early Sunday morning...several hours before peak heating
and combine with ongoing breezy N/NE winds.

As for the NE mountains, I think the most critical periods will
be this evening and overnight for similar reasoning stated above.
Most uncertainty will be with humidity recovery Sunday morning and
how fast this drops after sunrise to combine with the last push of
NE winds before waning in the afternoon. This highlight may need
to come down earlier but ran it through 1PM to see how conditions
are in the morning. Notice, we do not expect this to continue to
into peak heating when most humidities are at the lowest. /sb

&&

.AVIATION...
18Z TAFS: A cold front sags in later Saturday evening, with a few
more middle to high clouds. A more notable feature will be
strengthening winds at some TAF sites, especially away from
PUW/LWS. The first increase is expected later afternoon to early
evening, followed by a second surge late Saturday night/Sunday
morning. Speeds near 15 to 25kts with gusts toward 30 to 35kts
will be possible, especially toward COE and MWH with that second
surge. Expect some elevated some layers from regional wildfires.
Otherwise TAF sites will be dry and VFR. /J. Cote`



&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        98  67  89  61  91  67 /   0  10  10   0   0   0
Coeur d`Alene  95  62  85  57  89  61 /   0  10  10   0   0   0
Pullman        94  59  89  53  90  56 /   0   0  10   0   0   0
Lewiston      103  71  98  65  98  68 /   0   0   0   0   0   0
Colville      100  61  92  57  94  62 /   0  10  10   0   0  10
Sandpoint      94  54  83  49  88  54 /   0  10  10   0   0  10
Kellogg        94  61  83  52  88  57 /   0  10  10   0   0   0
Moses Lake    102  71  97  66  98  68 /   0   0   0   0   0   0
Wenatchee     103  75  98  72  99  72 /   0   0   0   0   0   0
Omak          100  66  96  63  97  65 /   0   0   0   0   0  10

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...Red Flag Warning from 5 PM this afternoon to 1 PM PDT Sunday for
     East Washington Northeast (Zone 686).

     Red Flag Warning until 3 PM PDT Sunday for East Washington
     Northern Columbia Basin (Zone 673)-East Washington Okanogan
     Highlands (Zone 687)-East Washington Okanogan/Methow
     Valleys (Zone 684).

&&

$$


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