Location:  
MeteoStar


FXUS65 KPIH 051932
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
132 PM MDT Fri Jun 5 2020

.SHORT TERM...Tonight through Sunday night.

A large low pressure system will move into the Pacific Northwest
this weekend. We'll isolated showers and thunderstorms gradually
increase in coverage tonight, becoming more widespread on Saturday.
Rain and isolated thunderstorms will persist through Sunday and into
early next week. Overall rainfall totals are discussed in the
Hydrology section below. Some of those storms on Saturday could be
strong with large hail and gusty winds possible. Rain will gradually
transition to snow across the higher elevations as snow levels fall
from nearly 10000 ft to 6000 ft on Sunday. Temperatures will fall
drastically over the weekend with highs on Sunday expected to be in
the 40s and 50s. Winds will accompany this system as well. Lake wind
advisories are possible Saturday with regular wind advisories
possible for Sunday.

13

.LONG TERM...Monday through Friday.

Active weather continues throughout the day Monday as an upper
trough pulls out of the region. Snow levels will be around
5000-5500 ft Monday morning, driving an additional 1-2 inches over
the Eastern Highlands. The Snake Plain will see some breezy
conditions Monday and Tuesday, which may lead to some lake wind
issues on American Falls Reservoir. Models are showing a more
progressive pattern developing through Wednesday. A low-amplitude
ridge will develop over the PAC NW on Tuesday, but a shortwave
trough will push through the ridge Tuesday night. This trough will
drive some PoPs in our northern zones, but precip amounts at this
point are low. The latter half of the week will see an
amplification of the pattern as a trough deepens offshore and
upstream ridging builds. This should bring us back to warmer
temperatures--back to around normal by Thursday. Hinsberger

&&

.AVIATION...Thunderstorms are expected to linger through the late
evening hours. Forecast soundings indicating a cold front pushing
through late tonight, bringing some strong low-level wind shear
overnight excluding KSUN. Moisture will surge into the region
tomorrow as some shortwave energy lifts northward. Anticipate VFR
conditions to prevail, though heavier showers may reduce visibility
briefly. Hinsberger

&&

.HYDROLOGY...Flood warnings and flood watches are now in effect for
the Teton River and for the Henrys Fork near Rexburg. Rainfall
amounts of 0.50 to 1.00 inches are possible from this event.
Combined with snowmelt from today, this will create increased flows
on area rivers. The Teton River has been running high so the
rainfall will likely push the river into minor flood stage. Expect
temperatures to fall Saturday night and Sunday which should
dramatically decrease snowmelt and subsequent runoff. Flooding is
expected to be brief with rivers likely falling below flood stage by
midweek.

13

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$
Back to Main Forecast Discussion Page