Flash Flood Warning 8, NWS Pocatello, ID

000 
WGUS75 KPIH 042338
FFSPIH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
538 PM MDT THU JUN 4 2009

IDC013-050030-
/O.CON.KPIH.FF.W.0008.000000T0000Z-090605T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLAINE ID-
538 PM MDT THU JUN 4 2009

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MDT FOR
NORTHWESTERN BLAINE COUNTY...

AT 536 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE WARNED
AREA.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO...
KETCHUM...
THE CASTLE ROCK BURN AREA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

NATIONAL WEATHER SERVICE RADAR INDICATED FLASH FLOODING OVER THE 
CASTLE ROCK BURN AREA. MUD AND ROCK SLIDES ARE POSSIBLE IN THE BURN 
AREA.

FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE
YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME
KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR
CREEKS.

&&

LAT...LON 4377 11456 4377 11435 4356 11435 4356 11460

$$

HANKO

000 
WGUS75 KPIH 050024
FFSPIH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
624 PM MDT THU JUN 4 2009

IDC013-050033-
/O.EXP.KPIH.FF.W.0008.000000T0000Z-090605T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BLAINE ID-
624 PM MDT THU JUN 4 2009

...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM MDT FOR NORTHWESTERN
BLAINE COUNTY...

LAT...LON 4377 11456 4377 11435 4356 11435 4356 11460

$$

HANKO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
206 PM MDT THU JUN 4 2009

.SHORT TERM...TONIGHT THROUGH SATURDAY NIGHT.

THUNDERSTORMS HAVE ONCE AGAIN DEVELOPED IN THE AFTERNOON HEAT. SO
FAR...ACTIVITY HAS BEEN MAINLY CONFINED TO THE UPPER SNAKE
HIGHLANDS AND CENTRAL MOUNTAINS. THE AREA IS STILL FEELING THE
INFLUENCE OF AN AREA OF HIGH PRESSURE OFF TO THE SOUTHEAST. WHICH
HELPS TO EXPLAIN WHERE THE CONVECTION IS. MODELS SHOW MOST OF THE
CONVECTION REMAINING OVER THE CENTRAL MOUNTAINS AND UPPER SNAKE
HIGHLANDS...BUT THERE IS ENOUGH MOISTURE AROUND THAT ISOLATED TO
SCATTERED THUNDERSTORMS COULD DEVELOP ELSEWHERE. SMALL
HAIL...GUSTY WINDS AND HEAVY DOWNPOURS ARE LIKELY UNDER THE
THUNDERSTORMS. FLASH FLOODING IS POSSIBLE OVER THE SOUTHERN AND
EASTERN HIGHLANDS ALONG WITH THE CENTRAL MOUNTAINS. TERRAIN PLUS
SATURATED CONDITIONS ALONG WITH THE INTENSE RAINFALL COULD PRODUCE
FLASH FLOODING OF STREAMS AND/OR LANDSLIDES.

THE LOW PRESSURE THAT IS OFF THE COAST OF CALIFORNIA WILL BEGIN TO
MOVE ONSHORE TONIGHT. THIS LOW HAS BEEN RESPONSIBLE FOR PUMPING
COPIOUS AMOUNTS OF MOISTURE INTO THE AREA. CONVECTION SHOULD
DIMINISH DURING THE OVERNIGHT HOURS...PERHAPS SOME LINGERING
SHOWERS MAINLY IN THE CENTRAL MOUNTAINS OR UPPER SNAKE HIGHLANDS.
CONVECTION IS EXPECTED TO BEGIN EARLIER TOMORROW AS THE ATMOSPHERE
FEELS THE EFFECTS OF THE UPPER JET PUNCHING INTO THE REGION.
THUNDERSTORM ACTIVITY IS EXPECTED TO BE MORE WIDESPREAD ON FRIDAY
AS THE LOW MOVES THROUGH CENTRAL CALIFORNIA AND BETTER UPPER LEVEL
DYNAMICS MOVE INTO EASTERN IDAHO. FLASH FLOODING ALONG WITH SMALL
HAIL AND GUSTY WINDS WILL BE POSSIBLE ONCE AGAIN ON FRIDAY.
CONVECTION WILL DIMINISH SOMEWHAT FRIDAY NIGHT. BUT THE LOW
PRESSURE SYSTEM WILL BE TRACKING THROUGH NORTHEAST THROUGH NEVADA
WHICH WILL KEEP ACTIVITY GOING ALL NIGHT. THIS WILL BE ESPECIALLY
TRUE IN THE CENTRAL MOUNTAINS WHERE A COLD FRONT IS APPROACHING
FROM THE NORTHWEST TO MEET THE LOW PRESSURE SYSTEM. THE LOW WILL
MOVE THROUGH SOUTHEAST IDAHO SATURDAY AND SATURDAY EVENING.
SHOWERS AND ISOLATED THUNDERSTORMS LOOK TO BE A GOOD BET WITH
HEAVY RAIN ONCE AGAIN POSSIBLE IF NOT LIKELY. THE COLD FRONT WILL
BE MOVING THROUGH THE REGION FROM NORTHWEST TO SOUTHEAST SATURDAY NIGHT
INTO SUNDAY. A LINE OF SHOWERS WILL ACCOMPANY THE FRONT WITH
SOMEWHAT DRIER CONDITIONS BEHIND THE FRONT.

.LONG TERM...SUNDAY THROUGH THURSDAY.
UPPER TROF MOVES EAST SUNDAY WITH A COLD NORTHERLY FLOW REMAINING
OVER REGION.  EXPECT QUITE COOL TEMPERATURES SUNDAY WITH A
CONTINUING CHANCE FOR SHOWERS IN THE COLDER AIR.  IT LOOKS TO BE A
VERY COOL PERIOD THROUGH THE MIDDLE OF NEXT WEEK AS ANOTHER UPPER
TROF IS SHOWN ON BOTH GFS AND EUROPEAN MODELS MOVING THROUGH
SOUTHEAST IDAHO IN THE WEDNESDAY TO THURSDAY TIME FRAME.  PATTERN
SHOULD KEEP TEMPERATURES WELL BELOW NORMAL THROUGH NEXT WEEK AND
KEPT THE CHANCE OF SHOWERS AND THUNDERSTORMS EACH DAY.  NO
PRECIPITATION CHANGES ON GRIDS.  MADE SLIGHT TEMPERATURES
ALTERATIONS.
GK

&&

.AVIATION...EXPECT SCATTERED SHOWERS AND THUNDERSTORMS AGAIN THIS
AFTERNOON AND EVENING AND AGAIN ON FRIDAY WITH MOIST AND UNSTABLE
PATTERN CONTINUING INTO THE WEEKEND.  HAVE THUNDERSTORMS VICINITY
ALL TAF SITES.
GK

&&

.FIRE WEATHER...A DEEP UPPER LOW WILL REMAIN OFF THE CALIFORNIA
COAST THROUGH THE REMAINDER OF THE WEEK. ABOVE NORMAL HUMIDITIES AND
SCATTERED THUNDERSTORMS WILL BE THE RULE THROUGH FRIDAY. THE UPPER
LOW IS FORECAST TO MOVE INLAND BY SATURDAY...BUT SHOWERS AND
THUNDERSTORMS REMAIN IN THE FORECAST THROUGH THE WEEKEND. DMH

&&

.PIH WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH UNTIL 11 PM MDT THIS EVENING FOR IDZ018-
022>025-031-032.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
430 AM MDT THU JUN 4 2009

IDZ017>025-031-032-051300-
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-
430 AM MDT THU JUN 4 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

A FLASH FLOOD WATCH IS IN EFFECT FOR PORTIONS OF SOUTHERN AND
CENTRAL IDAHO.  SEE THE LATEST URGENT WEATHER MESSAGE FOR DETAILS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH NEXT WEDNESDAY

DAILY AFTERNOON AND EVENING SHOWER AND THUNDERSTORM ACTIVITY WILL
CONTINUE THROUGH THIS PERIOD.  HEAVY SHOWERS...PRODUCING A FLASH
FLOOD THREAT...WILL RETURN ON FRIDAY AND SATURDAY.

.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.

MESSICK

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO
407 PM MDT THU JUN 4 2009

IDZ019-042300-
CLARK ID-
407 PM MDT THU JUN 4 2009

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A

SIGNIFICANT WEATHER ADVISORY FOR...
  CENTRAL CLARK COUNTY IN EASTERN IDAHO

UNTIL 500 PM MDT

AT 403 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 27 MILES NORTHWEST OF DUBOIS...MOVING EAST AT 5
MPH.

MOTORISTS TRAVELING ALONG INTERSTATE 15 NEAR SPENCER AND MONIDA PASS
SHOULD BE PREPARED FOR HAIL UP TO ONE-HALF INCH IN DIAMETER...WIND
GUSTS UP TO 40 MPH AND HEAVY RAIN BY AROUND 500 PM MDT.

LOCATIONS IMPACTED INCLUDE...
  RURAL WESTERN CLARK COUNTY...
  RURAL CENTRAL CLARK COUNTY...

LAT...LON 4428 11211 4426 11279 4430 11281 4439 11281
      4441 11284 4442 11284 4444 11282 4449 11262
      4446 11237 4449 11235 4452 11235 4456 11224
TIME...MOT...LOC 2204Z 250DEG 5KT 4437 11271

HUSTON