Severe Thunderstorm Warning 20, NWS Pocatello, ID

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
200 PM MDT FRI JUN 5 2009

.SHORT TERM...TONIGHT THROUGH SUNDAY NIGHT.

LOW PRESSURE SYSTEM HAS MOVED ONSHORE AND IS MOVING NORTHEAST
ACROSS NEVADA. THIS SYSTEM IS EXPECTED TO MOVE THROUGH SOUTHEAST
IDAHO LATE TONIGHT AND ON SATURDAY. MEANWHILE...A COLD FRONT WILL
BE APPROACHING THE AREA FROM THE NORTHWEST. IT IS EXPECTED TO PUSH
THROUGH THE REGION SATURDAY NIGHT AND SUNDAY. THUS...CHANCES FOR
SHOWERS AND THUNDERSTORMS WILL REMAIN HIGH INTO SUNDAY UNTIL THESE
SYSTEMS CLEAR THE REGION. HEAVY RAIN ALONG WITH GUSTY WINDS AND
SMALL HAIL WILL REMAIN POSSIBLE TONIGHT WITH THE FOCUS SHIFTING TO
MAINLY HEAVY RAIN FOR SATURDAY AND SUNDAY AS THE FRONT MOVES
THROUGH THE REGION. FLASH FLOOD WATCHES REMAIN IN EFFECT FOR THE
CENTRAL MOUNTAINS...SOUTHERN HIGHLANDS AND PORTIONS OF THE EASTERN
HIGHLANDS. THESE AREAS HAVE SEEN CONSIDERABLE AMOUNTS OF RAIN OVER
THE PAST SEVERAL DAYS AND ARE SUSCEPTIBLE TO FLASH FLOODING AND
MUDSLIDES.

ONCE THE FRONT CLEARS THE REGION...TEMPERATURES WILL COOL
CONSIDERABLY AND CHANCES FOR PRECIPITATION WILL BE LESS.

.LONG TERM...MONDAY THROUGH FRIDAY.
UPPER TROF FINALLY MOVES EAST BY MONDAY WITH A COOL NORTHWESTERLY
FLOW ALOFT BEHIND COLD FRONT.  EXPECT WELL BELOW NORMAL
TEMPERATURES MONDAY WITH A CHANCE OF SHOWERS IN CYCLONIC FLOW
CONTINUING.  GFS AND EUROPEAN MODELS KEEP SOUTHEAST IDAHO IN COOL
PATTERN THROUGH NEXT WEEK WITH GFS ADVERTISING ANOTHER PACIFIC WAVE
APPROACHING WEDNESDAY AND ACTUALLY CLOSING OFF ANOTHER 500 MILLIBAR
LOW WEST OF IDAHO.  THIS WILL KEEP SHOWERS GOING ALL WEEK.  EUROPEAN
MORE OPEN WITH WAVE...BUT SIMILAR IN THE CONTINUED COLD AND WET
PATTERN.  DID NOT CHANGE GRIDS WITH PRECIPITATION WITH A CHANCE OF
SLIGHT CHANCE DAILY AND KEPT TEMPERATURES WITH WELL BELOW NORMAL
HIGH TEMPERATURES THROUGH FRIDAY.
GK

&&

.AVIATION...EXPECT SHOWERS AND THUNDERSTORMS AT ALL TAF SITES FOR A
LARGE CHUNK OF THIS EVENING AND SATURDAY.  MAINLY VFR BUT UNDER
HEAVIER SHOWERS WILL DROP TO MVFR CEILINGS AND VISIBILITIES.
GK

&&

.FIRE WEATHER...ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS IS
FORECAST AGAIN TODAY WITH THE THREAT OF LOCALLY HEAVY RAIN...GUSTY
WINDS AND HAIL. GIVEN THE EXTREMELY MOIST AIRMASS IN PLACE...FLASH
FLOODING REMAINS POSSIBLE IN STEEPER TERRAIN AND WHERE THE GROUND IS
ALREADY WELL SATURATED. WET CONDITIONS WILL CONTINUE THROUGH THE
WEEKEND...WHEN THE LARGE UPPER LOW ALONG THE CALIFORNIA COAST SHIFTS
NORTHEAST PAST EASTERN IDAHO. DMH

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR IDZ018-022>025-031-
032.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
417 AM MDT FRI JUN 5 2009

IDZ017>025-031-032-061030-
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-
417 AM MDT FRI JUN 5 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

SHOWERS AND THUNDERSTORMS ARE EXPECTED AGAIN THROUGH TONIGHT
ACROSS EASTERN IDAHO. THERE IS A THREAT OF STRONG TO SEVERE STORMS
CAPABLE OF PRODUCING HEAVY RAIN...HAIL AND GUSTY WINDS. A FLASH
FLOOD WATCH IS IN EFFECT FOR ALL CENTRAL AND SOUTHERN MOUNTAINOUS
AREAS FOR THIS AFTERNOON AND TONIGHT. FOR MORE
INFORMATION...PLEASE REFER TO FFAPIH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SHOWERS AND ISOLATED THUNDERSTORMS WILL CONTINUE INTO NEXT WEEK.
THE GREATEST THREAT WILL BE SATURDAY INTO SUNDAY. THE THREAT OF
HEAVY RAIN IS POSSIBLE. HOWEVER...THE THREAT OF STRONG TO SEVERE
STORMS WILL BE LESS THAN TODAY. THE THREAT OF RIVER/SMALL STREAM
FLOODING MAY BECOME MORE OF AN ISSUE THAN FLASH FLOODING BY SUNDAY
AND EARLY NEXT WEEK.

MUCH COOLER WEATHER ARRIVES WITH TEMPERATURES COLD ENOUGH FOR SNOW
AT NIGHT ON THE HIGHER PEAKS. NO SIGNIFICANT SNOWFALL IS FORECAST
AT THIS TIME AND ANYTHING THAT FALLS WOULD MELT DURING THE
DAYLIGHT HOURS.

.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.

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SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
320 PM MDT FRI JUN 5 2009

IDZ017-052200-
LINCOLN ID-MINIDOKA ID-
320 PM MDT FRI JUN 5 2009

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  WEST CENTRAL MINIDOKA COUNTY IN SOUTH CENTRAL IDAHO
  LINCOLN COUNTY IN SOUTH CENTRAL IDAHO

UNTIL 400 PM MDT

AT 319 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM SHOSHONE TO
HAZELTON..AND MOVING NORTH AT 15 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IMPACTED INCLUDE...
   OWINZA AND  RICHFIELD...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4319 11429 4282 11377 4260 11388 4276 11393
      4276 11404 4280 11405 4280 11433 4283 11437
      4284 11436 4288 11441
TIME...MOT...LOC 2120Z 186DEG 15KT 4290 11433 4261 11406

HANKO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
323 PM MDT FRI JUN 5 2009

IDZ017-022-052215-
CASSIA ID-
323 PM MDT FRI JUN 5 2009

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  WESTERN CASSIA COUNTY IN SOUTH CENTRAL IDAHO

UNTIL 415 PM MDT

AT 324 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 9 MILES WEST OF MARION..MOVING NORTHEAST AT 25
MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IMPACTED INCLUDE...
   OAKLEY...
   MARION AND  LOCUST...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4220 11425 4242 11411 4242 11407 4247 11407
      4252 11404 4251 11401 4252 11399 4253 11398
      4240 11360 4204 11394
TIME...MOT...LOC 2124Z 209DEG 21KT 4224 11408

HANKO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
358 PM MDT FRI JUN 5 2009

IDZ017-031-052245-
LINCOLN ID-BLAINE ID-
358 PM MDT FRI JUN 5 2009

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL BLAINE COUNTY IN CENTRAL IDAHO
  CENTRAL LINCOLN COUNTY IN SOUTH CENTRAL IDAHO

UNTIL 445 PM MDT

AT 358 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR RICHFIELD..MOVING NORTH AT 20 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IMPACTED INCLUDE...
   RICHFIELD...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4334 11424 4323 11380 4285 11404 4299 11441
TIME...MOT...LOC 2158Z 194DEG 16KT 4300 11419

HANKO

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
414 PM MDT FRI JUN 5 2009

IDZ017-022-052300-
MINIDOKA ID-CASSIA ID-
414 PM MDT FRI JUN 5 2009

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  WESTERN CASSIA COUNTY IN SOUTH CENTRAL IDAHO
  SOUTHWESTERN MINIDOKA COUNTY IN SOUTH CENTRAL IDAHO

UNTIL 500 PM MDT

AT 411 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 11 MILES NORTH OF
MARION TO 14 MILES SOUTH OF OAKLEY..AND MOVING SOUTH AT 20 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
HEAVY RAIN.

LOCATIONS IMPACTED INCLUDE...
   MARION...
   LOCUST...
   OAKLEY AND  BASIN...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4202 11423 4241 11426 4242 11407 4250 11407
      4253 11393 4276 11392 4276 11380 4201 11371
TIME...MOT...LOC 2214Z 348DEG 17KT 4242 11398 4203 11395

WYATT