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Area forecast discussion 
National Weather Service Spokane Washington
1040 am PDT Friday Jul 11 2014

Synopsis...

A prolonged heat wave will continue across the inland northwest
through this weekend and may linger well into next week. Mid to
upper 90s will be common, with triple digit heat in the Lewiston
area and portions of the Columbia Basin. There will be potential
for monsoonal moisture to invade the region early next week, with
some threat of thunder, but otherwise the forecast is dry.



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Discussion...

Today through Saturday evening...ridge of high pressure over the
region amplifies through this time interval allowing for continued
dry weather with a warming trend with temperatures well above what
is considered normal for this time of year. Smoke from area fires
may cause some issues with the sky cover forecast at times with
the bigger impact in the early mornings when low level inversions
have yet to be removed. /Pelatti

Sunday through thurs nt: the Sunday evening through Mon nt
periods periods should be the most active part of the fcst,
centered around one wave. This wave will lift NE into the pac NW
late Sunday, but will stall over the region as it encounters dry
northerly steering flow out of Alberta and Montana. The GFS and
European model (ecmwf) are now showing significant timing differences, with the
European model (ecmwf) being the fastest. The NAM and sref are a bit closer to the
slower GFS. Either way, this filling upper low exits southeast towards
the cntrl rockies beginning tues morning. The main impacts of this
aforementioned scenario (evening with the timing issues) would be
a chance of thunder late Sunday through Mon evening. Peak heating
both late Sunday afternoon/evening, as well as Mon afternoon, will
play a major role as far as the areal coverage of thunder...
especially Sunday evening as the pre-frontal thermal ridge surges
north into the Idaho Panhandle and ern WA. Not only will Sunday be the
hottest day, but deep lyr shear will be stronger near the
Cascades, helping to produce a more organized thunder threat.
Though we're not expecting much thunder late Sunday through Mon
nt, any lightning strikes will have the potential to produce new
first starts. The most important changes to the fcst was to
increase the threat of showers/thunder Mon, and warm hi temps
especially Sunday. Mon will be the toughest hi temps fcst, given
the uncertainty as far as the areal coverage of showers/clouds.
With the exception of Wed in the Idaho Panhandle, we kept the
fcst dry. Bz

&&

Aviation...
18z tafs: area wildfires will produce haze from time to time
during the day and smoke layers aloft, especially at eat.
Otherwise high pressure will remain in place and allow VFR
conditions to prevail at all taf sites. Jw

&&

Preliminary point temps/pops...
Spokane 93 64 95 66 99 68 / 0 0 0 0 0 10
Coeur D'Alene 91 58 94 61 97 65 / 0 0 0 0 0 10
Pullman 91 53 94 55 97 62 / 0 0 0 0 0 10
Lewiston 99 65 102 67 104 71 / 0 0 10 10 0 10
Colville 96 55 98 58 103 64 / 0 0 0 0 0 10
Sandpoint 89 53 92 55 98 61 / 0 0 0 0 0 10
Kellogg 91 56 93 60 94 62 / 0 0 0 10 0 10
Moses Lake 98 63 101 67 102 71 / 0 0 0 0 10 10
Wenatchee 96 67 100 72 102 72 / 0 0 0 0 10 10
Omak 96 62 101 66 104 66 / 0 0 0 0 10 20

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Otx watches/warnings/advisories...
Idaho...none.
Washington...none.
&&

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