Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 200937
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
337 AM MDT WED JUL 20 2016

.SHORT TERM...Today through Friday. Hot...dry and breezy
conditions will persist today and Thursday as we remain in
Southwest flow ahead of a Upper Level Low and associated dry cold
front off the Pacific coast. A weak/dry short wave pushing through
the Southwest flow today will keep winds elevated with wind gusts
of 20 to 30 mph across the area. Early this morning partly cloudy
conditions mainly along the Wyoming border where isolated showers
are possible. Otherwise...expect clearing skies and lower relative
humidity as a dry slot works its way into the area today.
Thursday...weak high pressure ridging builds in over the area
bringing even warmer and drier conditions. May see isolated
showers and thunderstorms across the Bear Lake region...Eastern
Lemhi County and the Upper Snake Highlands Thursday afternoon into
early evening. Winds will slightly decrease on Thursday but remain
breezy. Friday look for breezy to moderate winds as a dry cold
front passes through the area. Expect temperatures 3 to 6 degrees
above normal today before becoming 5 to 10 degrees above normal on
Thursday. Temperatures will then drop to near normal on Friday. TW

.LONG TERM...Saturday through next Wednesday. Temperatures will
remain near normal on Saturday before gradually warming back up
through the period above normal as high pressure ridging builds
back in across the area. TW

&&

.AVIATION...Weak shortwave kicking through Idaho this morning has
produced a field of mid-level cloud cover working through the
northeast corner of the state. Cloud deck is shallow but an isolated
sprinkle is possible early as it moves into the higher elevations.
Otherwise expect VFR conditions through tonight. Afternoon winds to
increase across the area with strongest winds through the Arco
Desert north of KPIH. Winds to decrease by sunset. DMH

&&

.FIRE WEATHER...Shortwave moving through East Idaho today will again
strengthen surface gradient across the region and aid mixing. Red
flag conditions expected again this afternoon across portions of the
fire district and mainly higher elevations. Most of fire zone 410 in
Snake Plain likely to remain below 30 mph gust threshold but could
see a few locations touch that at times this afternoon. Lightest
winds still expected in southeast corner of region in zone 427.
Still believe that winds on Thursday will remain below thresholds
most areas despite continuing dry afternoon humidities. Friday
however remains the next significant critical day with breakdown of
the upper ridge, passage of a dry cold front, and considerable
strengthening of surface gradient across the region. Expect another
day of fire related headlines, with no precipitation. DMH

&&

.PIH Watches/Warnings/Advisories...
Red Flag Warning from 1 PM this afternoon to 7 PM MDT this
evening for IDZ413-422-475-476.

&&

$$


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