Special Weather Statement, NWS Pocatello, ID

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
101 PM MDT FRI JUL 10 2015

.DISCUSSION...SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS CONTINUE
TO DEVELOP EARLY THIS AFTERNOON UNDER NEAR CONTINUOUS CLOUD COVER
FROM STANLEY TO DRIGGS...THAT IS SLOWLY MOVING NORTH. CLOUDS ARE
BREAKING AND LETTING SUN THROUGH SOUTH OF AMERICAN FALLS WHICH WILL
PERMIT DESTABILIZATION THIS AFTERNOON. THAT COMBINED WITH COLD POOL
OF TEMPERATURES ALOFT WITH LOW PRESSURE DISTURBANCE LIFTING
NORTHEAST WILL PUSH TEMPERATURE LAPSE RATES TO 8-8.5 C/KM. THERE IS
A MARGINAL RISK OF SEVERE THUNDERSTORMS WITH HAIL AND STRONG DOWN
DRAFT WINDS. MODELS ARE FASTER WITH THE NEXT TROUGH COMING INTO THE
PACIFIC NORTHWEST AND KEEPING SOUTHEAST IDAHO UNDER SOUTHWEST FLOW
PATTERN. THIS WILL SERVE TO KEEP AFTERNOON TEMPERATURES
FLATTER...CLOSER TO 80F IN THE LOWER VALLEYS THROUGH THE WEEKEND AND
KEEP AT LEAST A SLIGHT CHANGE OF THUNDERSTORMS EACH AFTERNOON IN THE
SNAKE PLAIN AND SOUTH AND EAST HIGHLANDS SATURDAY THROUGH MONDAY.
THE STORM TRACK ALONG CANADA AND NORTHERN STATES BORDER AREA WILL
ALSO MAKE IT MORE DIFFICULT FOR MONSOON MOISTURE TO SURGE NORTH TO
IDAHO. THEREFORE NO BIG CHANGES WERE MADE TO THE EXTENDED FORECAST
...WEDNESDAY ON AT THIS TIME. RS
&&

.AVIATION...SHOWERS AND STORMS WILL BE AROUND EASTERN IDAHO FOR THE
NEXT 24 HOURS AND BEYOND. ALL TAFS WILL CARRY AT LEAST VCTS OR VCSH
FOR MOST IF NOT ALL OF THAT TIME. STRONGER STORMS MAY PRODUCE
LOCALLY HEAVY RAIN AND SMALL HAIL. GUSTY WINDS ARE POSSIBLE BUT THE
RISK IS A BIT LOWER IT LOOKS LIKE AT THE MOMENT. WE WILL SEE
COVERAGE DECREASE OVERNIGHT BUT PICK BACK UP AGAIN ON SATURDAY
ESPECIALLY ACROSS THE CENTRAL MOUNTAINS. KEYES
&&

.FIRE WEATHER...THE FOCUS FOR MORE WIDESPREAD SHOWERS AND STORMS
WILL SHIFT TOWARD THE CENTRAL MOUNTAINS AND UPPER SNAKE HIGHLANDS
FOR THE WEEKEND. ELSEWHERE...COVERAGE WILL BE MORE ISOLATED. THE
POTENTIAL FOR DECENT WETTING RAINS DECREASES ON SUNDAY EVEN ACROSS
THE CENTRAL MOUNTAINS AS WE SEE A LITTLE BIT OF DRYING BELOW CLOUD
BASE. IT WILL BE BREEZY ACROSS MUCH OF EASTERN IDAHO SATURDAY WITH
GUSTS OUTSIDE OF STORMS AT 25-35 MPH. THOSE WINDS WILL BE A LITTLE
LOWER ON SUNDAY BUT STILL BREEZY FOR MANY LOCATIONS.  KEYES
&&

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

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
138 PM MDT FRI JUL 10 2015

IDZ022-023-102015-
SOUTH CENTRAL HIGHLANDS ID-CARIBOU HIGHLANDS ID-
138 PM MDT FRI JUL 10 2015

...HALF INCH HAIL AND WINDS IN EXCESS OF 30 MPH AFFECTING SOUTH
CENTRAL BANNOCK AND EAST CENTRAL ONEIDA COUNTIES UNTIL 215 PM MDT...

AT 135 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR PLEASANTVIEW AND APPROACHING DANIELS RESERVOIR. THIS STORM WAS
NEARLY STATIONARY.

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

LOCATIONS IMPACTED INCLUDE...
PLEASANTVIEW AND DANIELS RESERVOIR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF ON OR NEAR DANIELS RESERVOIR...GET OUT OF THE WATER AND MOVE
INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO
15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU
ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER
NOW. DO NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

LAT...LON 4215 11229 4215 11253 4233 11252 4235 11236
      4231 11222
TIME...MOT...LOC 1935Z 180DEG 0KT 4223 11242

RS

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
221 PM MDT FRI JUL 10 2015

IDZ023-102100-
CARIBOU HIGHLANDS ID-
221 PM MDT FRI JUL 10 2015

...DIME SIZE HAIL...BRIEF HEAVY RAIN AND WINDS IN EXCESS OF 30 MPH
AFFECTING EAST CENTRAL BANNOCK COUNTY UNTIL 300 PM MDT...

AT 218 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
OVER VIRGINIA. THIS STORM WAS MOVING SLOWLY NORTHEAST AND WILL CROSS
INTERSTATE 15 BETWEEN VIRGINIA AND ARIMO.

DIME SIZE HAIL...BRIEF HEAVY RAIN AND WINDS IN EXCESS OF 30 MPH WILL
BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
ARIMO AND VIRGINIA.

LAT...LON 4245 11212 4247 11227 4260 11225 4263 11213
      4259 11204
TIME...MOT...LOC 2018Z 180DEG 0KT 4250 11221

RS