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Area forecast discussion 
National Weather Service Spokane Washington
421 am PDT Sat Jul 26 2014

Synopsis...
one more day of near average temperatures before a warming and
drying trend begins on Sunday. Hot and dry Summer conditions will
continue through the middle of next week. Hot temperatures persist
into next week, with an increasing risk for thunderstorms.

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Discussion...
today to sunday: high pressure builds in with dry, mostly clear
conditions and warmer temperatures. Through the period 500mb
heights rise. The steering flow shifts from west to southwest by
late Sunday. There is almost no convective instability. A bit of
moisture lingers near the northern mountain today, suggesting
some flat cumulus in the afternoon here. Drier air comes in with
the building ridge tonight into Sunday, leaving mostly clear
conditions until late Sunday. A weak upper impulse approaches from
the south then with some moisture. So a few high clouds are forecast
to approach late. Otherwise conditions will be dry, with diurnally
driven winds. Temperatures will push close to average today, then
above average Sunday under the building ridge. /J. Cote'

Sunday night through Friday...good model agreement and run-to-run
continuity continued through the extended forecast period with the
field of motion over the region dominated by a strong western USA
ridge...with the forecast area laying under the northwestern
flank of this feature. This strongly argues for increasingly hot
and mostly dry conditions through the upcoming week. The flow
pattern will promote the eventual arrival of monsoonal moisture
for a small thunderstorm threat possibly as early as Monday over
the far southeast and Panhandle mountains...with models hinting at
a stronger push of moisture later in the week. Models traditionally
do not handle these monsoonal pushes too well in the far periods,
so the details (specific higher risk days and areal extent of
thunderstorm coverage) will be left to further refinement in the
upcoming days. With no well defined short waves or disturbances
expected at this time...any thunderstorm coverage will be more
random and unorganized than the recent gangbuster event associated
with last wednesday's cold front and strong trough passage. /Fugazzi

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Aviation...
12z tafs: high pressure next 24 hrs. VFR conditions all taf sites,
with diurnal winds with speeds of 10 kts or less. /J. Cote'

&&

Preliminary point temps/pops...
Spokane 85 58 92 65 96 65 / 0 0 0 0 0 0
Coeur D'Alene 82 54 90 58 95 59 / 0 0 0 0 0 0
Pullman 85 50 92 56 96 58 / 0 0 0 10 10 10
Lewiston 92 62 98 68 101 67 / 0 0 0 10 10 10
Colville 86 53 93 54 97 55 / 0 0 0 0 0 0
Sandpoint 79 49 87 51 95 52 / 0 0 0 0 0 0
Kellogg 80 54 87 57 92 60 / 0 0 0 10 10 10
Moses Lake 90 59 96 63 100 64 / 0 0 0 0 0 0
Wenatchee 89 63 94 69 98 66 / 0 0 0 0 0 0
Omak 90 57 95 61 97 63 / 0 0 0 0 0 0

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

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