Area Forecast Discussion
Issued by NWS Pocatello, ID

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FXUS65 KPIH 241959

Area Forecast Discussion
National Weather Service Pocatello ID
159 PM MDT TUE MAY 24 2016

.SHORT TERM...Tonight through Friday afternoon. Low pressure trough
over Montana and Saskatchewan will continue to move slowly east
through Wednesday night. Meanwhile, the southern end of the trough
appears more complex with water vapor imagery showing a couple of
centers of circulation, one off the coast and another over
Nevada.Thunderstorms and lightning already developing and moving
into southern Idaho as a result. A few of these storms should reach
the Snake Plain this afternoon, small to medium hail possible.
Wednesday is expected to be fairly active for showers and isolated
thunderstorms as the entire trough moves over this area. A new
disturbance will move south from British Columbia late Wednesday
night and Thursday, a little slower than forecast yesterday. The
slower timing could result in Friday being a drier day. RS

.LONG TERM...Friday night through Tuesday.
Models in similar agreement in long term pattern being a series of
weak upper level short waves moving through Idaho.   Significant
precipitation is not expected through the long weekend but there
will be a chance of showers and thunderstorms daily mainly in the
mountains.  Expect temperatures to remain slightly below normal
thorugh the entire period.  Could see some breezy periods as well
over the weekend.


.AVIATION...Showers much more widespread this afternoon than
yesterday and have vicinity thunderstorms and showers at all TAF
sites this afternoon and early evening.  Activity should dissipate
overnight.  Ceilings should remain at VFR levels unless under a very
heavy rain shower.  Winds should stay around 10 knots or less
unless near thunderstorm outflow.


.PIH Watches/Warnings/Advisories...None.


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