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796
FXUS65 KPIH 232232
AFDPIH

Area Forecast Discussion
National Weather Service Pocatello ID
432 PM MDT Thu May 23 2024

.UPDATE...

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Updated to cancel the Lake Wind Advisory as winds have fallen well
below criteria. Frost advisory remains in effect for tonight
across the Snake Plain and Magic Valley. No other changes to the
forecast at this time.

13
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&&

.PREV DISCUSSION... 
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/issued 126 PM MDT Thu May 23 2024/

SHORT TERM...Tonight and Friday
Despite Memorial Day quickly approaching, it`s been a cloudy,
chilly, windy and for some, snowy, day across eastern Idaho.
Afternoon satellite imagery shows an upper low moving into central
Wyoming but clouds and moisture associated with this feature remain
in place across eastern portions of the forecast area. Did see some
light snowfall from around Rexburg up through Island Park this
morning and temperatures have warmed up enough in the lower levels
for a changeover to rain but light snow still continues in the
higher terrain and will continue into the mid evening. Winds remain
breezy across much of the area and have extended the Lake Wind
Advisory for AF reservoir for a few more hours given the ongoing
conditions. As the low continues to push east, should continue to
see gradual clearing throughout the overnight allowing temperatures
to drop once again close to the freezing mark in the lower
elevations and into the 20s across the high country. Another Frost
Advisory has been issued accordingly for the growing regions.

Friday looks mostly dry as we will see a bit of a break in between
weather systems before things become more unsettled once again on
Saturday. Temps will remain on the cooler side of normal but should
be some 10-15 degrees warmer than Thu high temperatures. Mostly
clear skies early will gradually give way to increasing clouds as we
start to feel the influence of our next weather system. Could see a
few isolated showers up along the Montana Divide and into the
central mountains tomorrow but these look to be pretty isolated.
McKaughan

LONG TERM...Saturday through Thursday
We will start out the Memorial Day Weekend on the wet and cool
side. It looks fairly showery, with a few afternoon thunderstorms
mixed on on Saturday. High temperatures barely hit 60-65 for the
valleys, with much colder conditions if you are headed into the
higher mountains. It will be breezy, so it will feel even cooler
than actual temperatures. We will clear out on Sunday, leaving
Memorial Day itself dry it appears. We might see a stray shower
over the mountains, but the chance is well below 10%. Temperatures
by Monday push back into the 70s for the valleys and 50s/60s for
the mountains. Precipitation- wise, don`t expect too much outside
some of the higher elevations, where 0.10-0.33" is possible. Snow
levels shouldn`t get terribly low, but enough that an inch or two
is possible...especially for highest ridges and peaks. High
pressure early next week quickly shifts east of the Divide,
opening the door up for a return of precipitation heading into the
middle of next week. We will remain on the warm side of the
weather pattern...which for now means no immediate return to
temperatures experienced with recent storms across the state.
Keyes

AVIATION...
We are still contending with showers and a few possible
thunderstorms through this evening. We will continue to see
conditions with showers dropping down to IFR at times. Gusty winds
impacting BYI, PIH and IDA should be gone by late evening. We should
see a break until later Friday. Look for VFR overnight and most of
tomorrow.  Keyes
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&&

.PIH WATCHES/WARNINGS/ADVISORIES...
Frost Advisory from 3 AM to 9 AM MDT Friday for IDZ051>055.

&&

$$