Special Weather Statement, NWS Pocatello, ID

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
128 PM MDT TUE JUN 16 2015

.DISCUSSION...A 65-70KT UPPER LEVEL JET STREAK MOVING THROUGH THE
CENTRAL MOUNTAINS THIS AFTERNOON. BEST INSTABILITY AND LIFT WILL
FOCUS FROM A ARCO TO MUD LAKE LINE NORTH TO MONIDA PASS ISLAND PARK.
ISOLATED CELLS MAY PRODUCE MODERATE HAIL AND BRIEF HEAVY RAIN.
TEMPERATURE LAPSE RATES STILL ON THE STEEP SIDE BUT MOISTURE IS A
LITTLE LOWER TODAY OVER YESTERDAY. SOME OF THIS UNSTABLE AIR WILL
LINGER NEAR THE MONTANA BORDER ON WEDNESDAY AND THURSDAY...BUT WITH
INCREASED RIDGING AND SOUTHWEST FLOW ANY CELLS WILL BE CONFINED VERY
NEAR THE BORDER. FRIDAY...LOW PRESSURE TROUGH  ADVANCES INTO BRITISH
COLUMBIA AND NORTHERN IDAHO. SOUTHEAST IDAHO LOOKS PRETTY DRY BUT
TRAILING END SURFACE FRONT BRUSHING THE UPPER SNAKE PLAIN EARLY
FRIDAY AND INCREASING SURFACE PRESSURE GRADIENT WILL  MAKE FOR A
BREEZY DAY...SW 15 TO 25 MPH...BUT SHORT OF WIND ADVISORY CRITERIA.
LOWER SNAKE PLAIN TEMPERATURES APPROACH 90F BY THURSDAY...THEN FALL
BACK 4 TO 7 DEGREES FRIDAY. REMAINDER OF THE FORECAST PERIOD LOOKS
PRETTY DRY...BUT BY MONDAY ANOTHER DISTURBANCE APPROACHES THE
BRITISH COLUMBIA AND WASHINGTON AREA AND MAY BRING ANOTHER COLD
FRONT THROUGH. RS
&&

.AVIATION...DRIER CONDITIONS WILL REMAIN ACROSS EASTERN IDAHO. ANY
STORMS TODAY AND TOMORROW WILL BE CONFINED TO AREAS FARTHER NORTH.
WE MAY SEE A FEW STORMS CLOSE ENOUGH TO KSUN AND KIDA THROUGH THIS
EVENING...WITH NOTHING NEAR ANY TAF SITE TOMORROW.
OTHERWISE...AFTERNOON AND EVENING WINDS WILL PEAK AROUND 15KTS WITH
HIGHER GUSTS AND AFFECT THE VALLEY LOCATIONS.  KEYES

&&

.FIRE WEATHER...DRIER CONDITIONS WILL TAKE OVER MUCH OF THE SOUTHERN
FIRE ZONES THROUGH THE NEXT SEVERAL DAYS. ANY SHOWERS AND STORMS
WILL REMAIN ACROSS THE MOST NORTHERN FIRE ZONES AS THE STORM TRACK
RETREATS NORTHWARD. WE WILL SEE BREEZY CONDITIONS WITH WINDS
INCREASING HEADING INTO THE WEEKEND. AFTERNOON HUMIDITY VALUES WILL
BE IN THE 10-20 PERCENT RANGE FOR THE LOWER ELEVATIONS AND 20-35
PERCENT FOR THE MOUNTAINS. OVERNIGHT RECOVERY WILL POOR ACROSS THE
SOUTH....GENERALLY SOUTH OF A GALENA TO SODA SPRINGS LINE. KEYES

.PIH WATCHES/WARNINGS/ADVISORIES...NONE.

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO ID
143 PM MDT TUE JUN 16 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0105 PM     TSTM WND GST     12 NW DUBOIS            44.30N 112.41W
06/16/2015  E45 MPH          CLARK              ID   TRAINED SPOTTER

            GUST ESTIMATED AT 40 TO 50 MPH. THUNDERSTORM HAD PEA-SIZE
            HAIL AND PRODUCED 0.40 INCHES OF RAINFALL IN 10 MINUTES.

&&

GWICKLUN

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
221 PM MDT TUE JUN 16 2015

IDZ019-162100-
UPPER SNAKE HIGHLANDS ID-
221 PM MDT TUE JUN 16 2015

...HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH AFFECTING EAST
CENTRAL FREMONT COUNTY UNTIL 300 PM MDT...

AT 219 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
LAST CHANCE. THIS STORM WAS NEARLY STATIONARY.

HALF INCH HAIL...RAIN UP TO A HALF INCH AND WINDS IN EXCESS OF 40
MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LAST CHANCE...HARRIMAN STATE PARK AND MESA FALLS STATE PARK.

LAT...LON 4439 11112 4412 11113 4422 11163 4435 11162
TIME...MOT...LOC 2019Z 000DEG 0KT 4428 11146

RS