Wind Advisory 22, NWS Pendleton, OR

885 
WWUS76 KPDT 031953
NPWPDT

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
1253 PM PDT SUN JUL 3 2016

....WIND ADVISORY IN EFFECT UNTIL 8 PM PDT THIS EVENING...

WAZ026-040300-
/O.CON.KPDT.WI.Y.0022.000000T0000Z-160704T0300Z/
KITTITAS VALLEY-
INCLUDING THE CITIES OF...ELLENSBURG...THORP
1253 PM PDT SUN JUL 3 2016

...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING...

* WINDS...WEST TO NORTHWEST 25 TO 35 MPH WITH GUSTS OF 45 TO 50
  MPH. STRONGEST WINDS WILL BE ACROSS THE NORTH SIDE OF THE
  VALLEY.

* TIMING...STRONGEST WINDS WILL CONTINUE THROUGH THIS AFTERNOON
  INTO EARLY EVENING.

* IMPACTS...TRAVELERS WILL EXPERIENCE DIFFICULTY WHILE DRIVING 
  ON AREA ROADWAYS...ESPECIALLY THOSE DRIVING HIGH PROFILE 
  VEHICLES. THIS INCLUDES INTERSTATES 82 AND 90. ALSO...LOOSE 
  OBJECTS MAY BECOME AIRBORNE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

942 
WWUS76 KPDT 040308
NPWPDT

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE PENDLETON OR
808 PM PDT SUN JUL 3 2016

WAZ026-040415-
/O.EXP.KPDT.WI.Y.0022.000000T0000Z-160704T0300Z/
KITTITAS VALLEY-
INCLUDING THE CITIES OF...ELLENSBURG...THORP
808 PM PDT SUN JUL 3 2016

...WIND ADVISORY HAS EXPIRED...

WINDS WILL DIMINISH SOME OVERNIGHT. HOWEVER NORTHWEST WINDS WILL
INCREASE AGAIN MONDAY TO 25 TO 35 MPH.

$$

Area Forecast Discussion
National Weather Service Pendleton OR
429 AM PDT SUN JUL 3 2016

Updated to add a fire weather discussion and to update the aviation
discussion

.SHORT TERM...Today through Tuesday...A stable westerly flow will
persist through tonight. There will be just enough moisture and
instability for possible afternoon and evening showers over the
Washington Cascade east slopes. Elsewhere it will remain dry with
just some cloudy skies. It will become breezy to windy in the
afternoon in most of the CWA...but the strongest winds will be in
the Lower Columbia Basin and adjacent valleys. The Kittitas valley
will have the strongest winds in these locations with a wind
advisory in effect from 8 am until 8 pm. With the chilly
temperatures tonight combined with decreasing wind it will become
quite chilly. Then on Monday and Tuesday there will be a cooling
trend with temperatures back to near normal by Tuesday. It will be
breezy to windy again on Monday and Tuesday afternoons...but with
speeds below wind advisory criteria. Still there could be some gusts
of wind that may move some things like lawn furniture and canopies
during your 4th of July picnic...so stay tuned to the latest
weather forecasts and possible wind advisories. 88

.LONG TERM...Tuesday night through Sunday...The extended period
starts off dry for most of the forecast area Tuesday night. Then an
upper level low will drop southward across Washington state and
possibly northern Oregon. There remain some model differences in
just how far south this upper low will move before it slides east
into ID/MT. The latest ECMWF trended toward the GFS solution which
would bring the low into northern Oregon Wednesday
afternoon/evening. The forecast was therefore trended in this
direction and a slight chance of showers/t'storms was introduced
across the Washington East Slopes, N. Blue Mtns and Wallowa County.
With this low moving through, sky cover was bumped up into the
partly cloudy range for much of the CWA...except Central Oregon
where it is expected to remain mostly clear. Winds will be breezy at
times on Wednesday and temperatures will fall back to below average
levels. This means highs in the mid-70s to lower 80s in the
valleys/basins with only 60s and lower 70s mountains.

After a short break in the active weather on Thursday (and slightly
warmer temperatures) the remainder of the extended period is now
looking rather active...especially for July. By Friday the latest
model guidance was in good agreement that a plume of moisture would
move into the forecast area out ahead of a large upper low/trough
situated in the Gulf of Alaska. The latest ECWMF was more bullish
spreading steady light rain over the western half of the
area...while the GFS brought only showers for Friday. Took a blend
of these two scenarios but leaned toward the wetter ECMWF solution
due to the strength and size of this mid level moisture plume.
Heading into next weekend the latest guidance is now in good
agreement that the above mentioned upper low will spin offshore
before slowly moving over the Pacific Northwest by Sunday. This low
will have plenty of moisture to work with along with a strong upper
jet (125 Kts at 300 mb). Therefore trended the forecast wetter with
more clouds during this period areawide. The exact details of this
storm system remain to be seen, however if this scenario plays out
close to how the current models have it, there will likely be
periods of steady rain for at least parts of the area. It will
remain breezy to locally windy next weekend as this system moves
through. On a final note temperatures will be well below average for
mid-summer. Expect highs only in the 70s for the valleys/basins on
Sunday...with only upper 50s to 60s mountains. 77

&&

.AVIATION...12Z TAFS...Skies will remain mainly clear through the
next 24 hours. The main impact to aviation interests will be the
increasing winds today. Westerly winds will be between 15 to 25 KTs
this afternoon and early evening at most terminals...except 20 to 35
KTs at KDLS and KPDT. Winds decrease AOB 15 KTs after 04/04z for
most terminals. With the gusty winds there will also be the
potential for localized blowing dust this afternoon...esp INVOF
KPDT. 77

&&

FIRE WEATHER...Red Flag warnings are in effect for the Lower
Columbia Basin and Eastern Columbia River Gorge zones for today and
Monday due to gusty winds and low humidity during the afternoon and
evening hours. Surface winds will increase behind a cold front
today, then increase again on Monday as a second shortwave moves
across the area. Although the humidity values will not be critically
low (ranging from 15-25 percent), the potential for rapid fire
spread exists. Fire will spread fastest across large grassy areas.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  82  53  78  51 /   0   0   0   0
ALW  84  59  79  57 /   0   0   0   0
PSC  87  55  84  55 /   0   0   0   0
YKM  83  51  81  50 /   0   0   0   0
HRI  86  54  83  53 /   0   0   0   0
ELN  74  55  74  53 /   0   0   0  10
RDM  82  42  79  41 /   0   0   0   0
LGD  81  48  77  46 /   0   0   0   0
GCD  83  46  80  46 /   0   0   0  10
DLS  80  58  79  56 /   0   0   0   0

&&

.PDT Watches/Warnings/Advisories...
OR...Red Flag Warning from noon today to 9 PM PDT Monday for ORZ639-
     641.

WA...Red Flag Warning from noon today to 9 PM PDT Monday for WAZ639-
     641-675.
  ...Wind Advisory from 8 AM PDT today until 8 PM this evening for
     WAZ026.

&&

88/77/77