Special Weather Statement, NWS Pocatello, ID

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.
GK

&&

.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.
GK

&&

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

&&

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
150 PM MDT TUE MAY 24 2016

IDZ021-242030-
LOWER SNAKE RIVER PLAIN ID-
150 PM MDT TUE MAY 24 2016

...HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH AFFECTING
NORTHWESTERN POWER COUNTY UNTIL 230 PM MDT...

AT 149 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 15
MILES WEST OF ABERDEEN...MOVING NORTH AT 5 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
PILAR BUTTE.

LAT...LON 4281 11302 4282 11322 4303 11323 4303 11301
TIME...MOT...LOC 1949Z 186DEG 5KT 4292 11314

RS

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
330 PM MDT TUE MAY 24 2016

IDZ021>023-242230-
CARIBOU HIGHLANDS ID-LOWER SNAKE RIVER PLAIN ID-
SOUTH CENTRAL HIGHLANDS ID-
330 PM MDT TUE MAY 24 2016

...MODERATELY STRONG THUNDERSTORMS NORTH OF HOLBROOK AND EAST OF
SUBLETT MOVING NORTH TOWARD ROCKLAND AND PAULINE THROUGH 430 PM
MDT...

AT 326 PM MDT...DOPPLER RADAR WAS TRACKING MODERATE THUNDERSTORMS 10
MILES NORTH OF HOLBROOK SUMMIT AND 18 MILES EAST OF MALTA...MOVING
NORTHEAST AT 15 MPH.

HALF INCH HAIL...BRIEF HEAVY RAIN AND WIND GUSTS TO 40 MPH ARE
POSSIBLE WITH THESE STORMS AS THEY MOVE NORTH THROUGH 430 PM MDT.

LOCATIONS IMPACTED INCLUDE...
ROCKLAND...FORT HALL BANNOCK PEAK...ROY...ARBON...
SUBLETT RESERVOIR...PAULINE...
HAWKINS RESERVOIR AND DANIELS RESERVOIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 4264 11221 4264 11302 4228 11313 4227 11251
TIME...MOT...LOC 2126Z 202DEG 12KT 4232 11259 4232 11301

HUSTON

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
337 PM MDT TUE MAY 24 2016

IDZ023-025-242215-
CARIBOU HIGHLANDS ID-WASATCH MOUNTAINS/IDAHO PORTION ID-
337 PM MDT TUE MAY 24 2016

...THUNDERSTORMS OVER THE NORTHERN WASATCH MOUNTAINS MOVING
NORTHEAST INTO THE BEAR LAKE VALLEY THROUGH 415 PM MDT...

AT 333 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF THUNDERSTORMS
OVER THE NORTHERN WASATCH MOUNTAINS...MOVING NORTHEAST AT 15 MPH.

HALF INCH HAIL...BRIEF HEAVY RAIN...FREQUENT LIGHTNING AND GUSTY
WINDS UP TO 45 MPH ARE POSSIBLE WITH THESE STORMS AS THEY MOVE
NORTHEAST INTO THE BEAR LAKE VALLEY THROUGH 415 PM MDT.

LOCATIONS IMPACTED INCLUDE...
MONTPELIER...BEAR LAKE IDAHO PORTION...GEORGETOWN...SAINT CHARLES...
DINGLE...PARIS...BLOOMINGTON...MINNETONKA CAVE...OVID...BERN...
LIBERTY...EMMIGRANT SUMMIT...CLEAR CREEK RANGER STATION...
BORDER SUMMIT...GENEVA SUMMIT AND BENNINGTON.

LAT...LON 4268 11118 4222 11109 4202 11151 4240 11159
TIME...MOT...LOC 2133Z 230DEG 15KT 4232 11152 4214 11149

HUSTON

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
345 PM MDT TUE MAY 24 2016

IDZ021-023-242230-
CARIBOU HIGHLANDS ID-LOWER SNAKE RIVER PLAIN ID-
345 PM MDT TUE MAY 24 2016

...MODERATE THUNDERSTORM SOUTHWEST OF INKOM MOVING IN THAT GENERAL
DIRECTION THROUGH 430 PM MDT...

AT 342 PM MDT...DOPPLER RADAR WAS TRACKING A MODERATE THUNDERSTORM
SOUTHWEST OF INKOM...MOVING NORTHEAST AT 15 MPH.

HALF INCH HAIL...BRIEF HEAVY RAIN...AND WIND GUSTS TO 40 MPH ARE
POSSIBLE WITH THIS STORM AS IT MOVES NORTHEAST THROUGH 430 PM MDT.

LOCATIONS IMPACTED INCLUDE...
MCCAMMON...CHESTERFIELD RESERVOIR...INKOM...PORTNEUF GAP...FORT HALL
MOUNT PUTNAM AND FORT HALL PUTNAM LODGE.

LAT...LON 4263 11210 4265 11241 4303 11232 4297 11193
TIME...MOT...LOC 2142Z 197DEG 13KT 4274 11225

HUSTON

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
421 PM MDT TUE MAY 24 2016

IDZ024-025-242315-
CACHE VALLEY/IDAHO PORTION ID-WASATCH MOUNTAINS/IDAHO PORTION ID-
421 PM MDT TUE MAY 24 2016

...THUNDERSTORM NEAR MAPLETON MOVING NORTHEAST TOWARD THE NORTHERN
WASATCH MOUNTAINS THROUGH 515 PM MDT...

AT 419 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7
MILES NORTHEAST OF FRANKLIN...MOVING NORTHEAST AT 10 MPH.

HALF INCH HAIL...HEAVY RAIN AND WIND GUSTS UP TO 40 MPH ARE POSSIBLE
WITH THIS STORM THROUGH 515 PM MDT.

LOCATIONS IMPACTED INCLUDE...
ONEIDA NARROWS RESERVOIR...MAPLETON...MINK CREEK...OVID AND WHITNEY.

LAT...LON 4200 11165 4208 11186 4241 11169 4228 11137
TIME...MOT...LOC 2219Z 209DEG 11KT 4211 11172

HUSTON