Area Forecast Discussion
Issued by NWS Missoula, MT

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FXUS65 KMSO 242036

Area Forecast Discussion
National Weather Service Missoula MT
236 PM MDT Thu May 24 2018

.DISCUSSION...Scattered showers and thunderstorms are ongoing and
will continue into the evening hours, most concentrated across
north-central Idaho into southwest Montana. Locally heavy rain
leading to minor small stream flooding will be the primary concern
but small hail and gusty winds will also be possible.

Friday will be similar with late day thunderstorms once again but
coverage will be more widespread compared to today. The threat
of a few strong thunderstorms will also be greater, especially
south of Hwy 200. Brief heavy downpours, gusty winds to 50 mph,
and small hail will continue to be the main concerns after 4-5pm.
North-central Idaho eastward to the Bitterroot Valley is of
particular concern for flash flooding of small streams and creeks
(especially around burn scars) late Friday into early Saturday

Daily showers and thunderstorms will continue this weekend into
early next week. Temperatures will continue to be pleasant and
remain above seasonable levels. Forecast models have hinted at
more persistent rainfall across southwest Montana into Lemhi
County late Sunday into Monday but have varied considerably from
run to run, certainly something to watch for. Those planning
outdoor activities this Memorial Day weekend should prepare for a
little of everything; rain, sun, and mild temperatures.

Looking at the remainder of next week, it is hard to find a dry
day with at least some showers and thunderstorms across the region
each day. Temperatures will continue at slightly above seasonable


.AVIATION...Scattered showers and thunderstorms will continue into
this evening with the most likely terminal sites to be impacted
including KGPI and KSMN. Brief heavy downpours will be the main
threat but there is also a potential for gusty, erratic winds.
Showers will diminish late this evening with some patchy morning
fog possible where rain falls this evening. The coverage of
showers and thunderstorms will be more widespread on Friday but
still focused from late-afternoon into the evening hours. A few
strong to severe thunderstorms will be possible late Friday.


MT...Flood Watch through Sunday afternoon Missoula/Bitterroot Valleys.

     Flood Watch through Friday morning Flathead/Mission Valleys.


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