Severe Thunderstorm Warning 31, NWS Pocatello, ID

096 
WWUS55 KPIH 112143
SVSPIH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
343 PM MDT MON JUL 11 2011

IDC031-067-112200-
/O.CON.KPIH.SV.W.0031.000000T0000Z-110711T2200Z/
MINIDOKA ID-CASSIA ID-
343 PM MDT MON JUL 11 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM MDT
FOR WEST CENTRAL CASSIA AND EXTREME SOUTHWESTERN MINIDOKA COUNTIES...

AT 339 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED OVER EXTREME EAST CENTRAL TWIN FALLS COUNTY...OR 14 MILES
EAST OF TWIN FALLS...MOVING NORTHEAST AT 15 MPH.

* LOCATIONS THAT COULD BE AFFECTED INCLUDE...
  RURAL SOUTHWESTERN MINIDOKA COUNTY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 8 7 7 1 9 3 7.

&&

LAT...LON 4234 11429 4234 11430 4241 11429 4242 11428
      4243 11408 4251 11407 4254 11399 4254 11394
      4263 11394 4265 11390 4245 11386 4233 11409
TIME...MOT...LOC 2143Z 232DEG 15KT 4252 11418

$$

906 
WWUS55 KPIH 112206
SVSPIH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
406 PM MDT MON JUL 11 2011

IDC031-067-112216-
/O.EXP.KPIH.SV.W.0031.000000T0000Z-110711T2200Z/
MINIDOKA ID-CASSIA ID-
406 PM MDT MON JUL 11 2011

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL CASSIA AND
EXTREME SOUTHWESTERN MINIDOKA COUNTIES HAS EXPIRED...

AT 406 PM MDT...WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE
THUNDERSTORMS WHICH PROMPTED THE WARNING HAVE WEAKENED OR MOVED OUT
OF THE AREA. THEREFORE THE WARNING HAS BEEN ALLOWED TO EXPIRE.

* LOCATIONS THAT COULD BE AFFECTED INCLUDE...
  RURAL SOUTHWESTERN MINIDOKA COUNTY...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY TUNED TO THIS BROADCAST FOR THE LATEST UPDATES AND INFORMATION.
TO REPORT SEVERE WEATHER ONLY...CALL 1 800 8 7 7 1 9 3 7.

&&

LAT...LON 4234 11429 4234 11430 4241 11429 4242 11428
      4243 11408 4251 11407 4254 11399 4254 11394
      4263 11394 4265 11390 4245 11386 4233 11409
TIME...MOT...LOC 2143Z 232DEG 15KT 4252 11418

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
219 PM MDT MON JUL 11 2011

.SHORT TERM...THIS EVENING THROUGH WEDNESDAY. UPPER LEVEL TROUGH
IN GULF OF ALASKA IS SLOWLY DROPPING TOWARDS WEST COAST OF US.
THIS IS ALLOWING FAST SOUTHWEST TO NORTHWEST FLOW ACROSS OUR AREA
AND PUSHING LITTLE IMPULSES OF ENERGY AND MOISTURE THROUGH THE
REGION. WITH DAYTIME HEATING ISOLATED THUNDERSTORMS EXPECTED TODAY
AND AGAIN TUESDAY WITH GUSTY WINDS THE BIGGEST THREAT. SOME OF THE
STORMS WILL PRODUCE BRIEF HEAVY RAINS...BUT WITH THE FAST UPPER
FLOW THE AMOUNTS IN ONE AREA WILL BE LIMITED. WEDNESDAY THUNDERSTORM
ACTIVITY WILL BE LIMITED TO WYOMING IDAHO BORDER AND THE CENTRAL
IDAHO MOUNTAINS. WINDS WILL BEGIN TO INCREASE ON WEDNESDAY IN
ADVANCE OF APPROACHING WEST COAST LOW PRESSURE SYSTEM. PRESTON

.LONG TERM...THE APPROACHING UPPER LEVEL LOW WILL FINALLY SWING A
TROUGH THROUGH ON THU...MAINLY IN THE CENTRAL IDAHO MOUNTAINS. THE
TROUGH LIFTS NORTHEASTWARD THROUGH OREGON AND WESTERN
IDAHO...LEAVING THE GREATEST POPS STILL IN THE WESTERN HALF OF THE
STATE. HAVE ADJUSTED POPS DURING THIS TIME TO MATCH THE PATTERN
BETTER. STRONGER FLOW ALOFT SHOULD MEAN BREEZIER CONDITIONS. UPPER
LEVEL RIDGING MAY BECOME MORE DOMINANT BY SAT NIGHT OR
SUN...PUSHING TEMPERATURES UP AS SKIES ARE CLEARER. MESSICK

&&

.AVIATION...LOOK FOR VICINITY THUNDERSTORMS FOR ALL TAF SITES THIS
AFTERNOON INTO EARLY EVENING. EXPECT GUSTY WINDS IN AND AROUND
THUNDERSTORMS. WYATT

&&

.FIRE WEATHER...SOUTHWEST FLOW IS BRINGING PACIFIC MOISTURE ACROSS
THE CENTRAL MOUNTAINS AND MONSOONAL MOISTURE ACROSS SOUTHEAST IDAHO.
LOOK FOR ISOLATED THUNDERSTORMS ACROSS LOWER ELEVATIONS AND
SCATTERED THUNDERSTORMS ACROSS HIGHER TERRAIN THIS AFTERNOON INTO
EARLY EVENING. EXPECT GUSTY ERRATIC WINDS AND LOCALLY HEAVY RAINFALL
DURING THUNDERSTORMS. LOOK FOR AN UPPER LEVEL LOW TO SKIRT OVER
NORTHERN IDAHO BY THE END OF THE WEEK SHUTTING OFF THE MONSOONAL
FLOW AND ALLOW CONTINUED AFTERNOON THUNDERSTORMS ACROSS THE CENTRAL
MOUNTAINS. LOOK FOR HIGH PRESSURE RIDGING TO MOVE BACK IN SUNDAY AND
MONDAY BRINGING BACK HOT AND DRY CONDITIONS. WYATT

&&

.HYDROLOGY...FLOOD WARNING REMAINS IN EFFECT FOR THE SNAKE RIVER AT
BLACKFOOT WITH HIGHER FLOWS THROUGH THIS WEEK FROM RELEASES
THROUGH THE PALISADES DAM. THE TETON RIVER NEAR SAINT ANTHONY IS
BELOW FLOOD STAGE BUT WILL REMAIN IN THE ACTION STAGE THROUGH
THURSDAY. SNOWMELT IN THE TETON MOUNTAINS CONTINUES TO FORCE
STREAM IN TETON COUNTY IDAHO TO BANKFULL WITH MINOR FLOODING -
THUS FLOOD ADVISORY IN EFFECT FOR EASTERN PARTS OF THIS COUNTY.

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
FLOOD WARNING FOR SNAKE RIVER AT BLACKFOOT
FLOOD ADVISORY FOR EASTERN TETON COUNTY

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
1051 AM MDT MON JUL 11 2011

IDZ017>025-031-032-121700-
EASTERN MAGIC VALLEY-SAWTOOTH MOUNTAINS-UPPER SNAKE HIGHLANDS-
UPPER SNAKE RIVER PLAIN-LOWER SNAKE RIVER PLAIN-
SOUTH CENTRAL HIGHLANDS-CARIBOU HIGHLANDS-
CACHE VALLEY/IDAHO PORTION-WASATCH MOUNTAINS/IDAHO PORTION-
BIG AND LITTLE WOOD RIVER REGION-LOST RIVER/PAHSIMEROI-
1051 AM MDT MON JUL 11 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

ISOLATED THUNDERSTORMS ARE POSSIBLE IN THE ISLAND PARK AREA AS
WELL AS CLARK AND TETON COUNTIES WHICH MAY APPROACH SEVERE LEVELS
LATER THIS AFTERNOON INTO EARLY EVENING. ISOLATED THUNDERSTORMS WITH
GUSTY WINDS TO 50 MPH ARE POSSIBLE IN THE SOUTHERN HIGHLANDS EAST TO
CARIBOU HIGHLANDS THIS AFTERNOON AND EARLY EVENING. WEATHER
SPOTTERS SHOULD KEEP AN EYE OUT FOR DEVELOPING STORMS AND CONTACT
THE WEATHER OFFICE WITH REPORTS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. AFTERNOON
AND OVERNIGHT THUNDERSTORMS WILL BE POSSIBLE EACH DAY. FOR
TUESDAY...THE MAIN FOCUS WILL BE ON THE IDAHO-WYOMING BORDER. FOR
WEDNESDAY AND BEYOND...THE MOSTLY LIKELY AREA FOR THUNDERSTORMS
WILL BE THE CENTRAL IDAHO MOUNTAINS.

.SPOTTER INFORMATION STATEMENT...

WE ASK TRAINED SPOTTERS AND CITIZENS TO REPORT SIGNIFICANT
WEATHER CONDITIONS WHEN IT IS SAFE TO DO SO. THESE CONDITIONS MAY
INCLUDE HAIL...TORNADOES...STRONG WIND...DUST STORMS...SNOWFALL...
EXTREME COLD TEMPERATURES...FREEZING RAIN OR HEAVY RAIN...DENSE
FOG...AND FLOODING OR ICE JAMS. INFORMATION ABOUT THESE HAZARDOUS
CONDITIONS SHOULD BE CALLED INTO YOUR NATIONAL WEATHER SERVICE
OFFICE IN POCATELLO USING THE 1-800 SEVERE WEATHER HOTLINE...OR
208-233-0834.