Flash Flood Warning 3, NWS Pocatello, ID

000 
WGUS75 KPIH 062143
FFSPIH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
340 PM MDT THU JUL 6 2006

IDC037-062330-
CUSTER ID-
340 PM MDT THU JUL 6 2006

...A FLASH FLOOD WARNING CONTINUES UNTIL 530 PM MDT FOR CENTRAL
CUSTER COUNTY...

AT 338 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED 
THUNDERSTORMS MOVING OUT OF THE WARNED AREA...HOWEVER RUNOFF FROM 
THE STORMS WILL CONTINUE TO CREATE A FLASH FLOOD THREAT.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CHALLIS.

IN HILLY TERRAIN THERE ARE NUMEROUS LOW WATER CROSSINGS WHICH ARE 
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS 
FLOODED ROADS. FIND ALTERNATE ROUTES. IT ONLY TAKES A FEW INCHES OF 
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

LAT...LON 4424 11464 4407 11437 4449 11389 4465 11424

$$

HEDGES

WEATHER INFORMATION ON-LINE 24-HOURS A DAY
(ALL LOWER-CASE LETTERS)

WWW.WEATHER.GOV/POCATELLO

000 
WGUS75 KPIH 062336
FFSPIH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
529 PM MDT THU JUL 6 2006

IDC037-062350-
CUSTER ID-
529 PM MDT THU JUL 6 2006

...THE FLASH FLOOD WARNING FOR CENTRAL CUSTER COUNTY EXPIRES AT 530
PM MDT...

FLASH FLOODING ASSOCIATED WITH THUNDERSTORMS WAS REPORTED EARLIER. 
HIGH WATER WAS REPORTED IN MALM GULCH...WHICH IS ALONG HIGHWAY 75 
BETWEEN CHALLIS AND CLAYTON. SOME MUD FLOW WAS ALSO REPORTED ON WARM 
SPRING CREEK NEAR SUN BEAM RESULTING FROM HEAVY RAIN ON AN OLD FIRE 
AREA. THUNDERSTORMS ARE DEMINISHING IN STRENGTH...HOWEVER CAMPERS IN 
THE AREA SHOULD BE ALERT TO HIGH STREAM FLOWS THAT CAN PERSIST AFTER 
THUNDERSTORMS END.


LAT...LON 4424 11464 4407 11437 4449 11389 4465 11424

$$

RS

WEATHER INFORMATION ON-LINE 24-HOURS A DAY
(ALL LOWER-CASE LETTERS)

WWW.WEATHER.GOV/POCATELLO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE POCATELLO ID
323 AM MDT THU JUL 6 2006

.DISCUSSION...SOUTHERLY MOIST FLOW IN PLACE OVER FCST AREA WITH
UPSTREAM MOISTURE PER WV IMAGERY. WEAK SHORTWAVE OVER CENTRAL
NEVADA PROGGED TO DRIFT OVER FCST AREA TODAY ACTING AS ADDITIONAL
FORCING FOR CONVECTIVE DEVELOPMENT. KEPT SCATTERED POPS OVER MOST
OF FCST AREA WITH SOME PORTIONS OF CENTRAL MTNS CREEPING UP INTO
LIKELY POPS WHERE BETTER INSTABILITY IN PLACE FOR POTENTIALLY
STRONGER STORMS AND WITHIN AREA OF SLIGHT RISK AS OUTLINED BY SPC.
SHORTWAVE ENERGY SHOULD PUSH NORTHEAST OF FCST AREA THIS EVENING
THUS EXPECT DECREASED THREAT OF CONVECTION OVERNIGHT.
HOWEVER...BOTH WRF/NAM AND GFS CONTINUE TO INDICATE WEAK
INSTABILTY AND A VERY WEAK SHORTWAVE PUSHING ACROSS UTAH BORDER
OVERNIGHT. KEPT WEAK ISOLATED POPS TO ACCOUNT FOR THIS FEATURE.
NEXT WAVE PUSHES ACROSS STATE FROM WEST...FLATTENING RIDGE
SOMEWHAT OVER FCST AREA DURING THE DAY FRI. MOISTURE MUCH MORE
LIMITED WITH THIS SYSTEM THUS KEPT POPS MORE ISOLATED. BY
SAT...MODELS REAMPLIFY UPPER RIDGE OVER GREAT BASIN. A WEAK WAVE
TRIES TO FORM SUN...AND HAVE SLIGHTLY INCREASED POPS PARTICULARLY
ALONG UTAH/WYOMING BORDERS WHERE MODELS HAVE HELD GREATEST
CONSISTENCY IN PLACING QPF. GFS USES THIS WAVE AS AN OPPORTUNITY
TO PUSH ANOTHER PACIFIC WAVE ACROSS PACNW STATES...BRINGING MAINLY
A SLIGHT CHANCE OF PRECIP TO EAST IDAHO. OVERALL...MED RANGE
MODELS IN FAIRLY GOOD AGREEMENT ON THIS FEATURE. REMAINDER OF FCST
STAYS UNSETTLED WITH WARM SOUTHWEST FLOW. GFS PROGRESSES A DEEP
CHUNK OF MOISTURE THROUGH FCST AREA FOR WED/THU. NOT QUITE READY
TO JUMP ON THAT MUCH PRECIP SO HELD POPS IN ISOLD TO LOW SCT
RANGE. DMH

&&

.AVIATION...NOT EXPECTING A RETURN OF ANY IMPACTFUL
CEILING/VISIBILITY CONDITIONS EXCEPT THAT THE JACKSON HOLE
APPARENTLY HAS FOG AND STRATUS FOR THE TWEB ROUTE 344.  HOWEVER
THUNDERSTORMS WILL THREATEN AGAIN TODAY.  SHORTWAVE EXPECTED TO
CROSS THROUGH EASTERN IDAHO AND ATMOSPHERE STILL UNSTABLE ENOUGH FOR
STRONG CONVECTION.  IN FACT...KSUN IS IN A STORM PREDICTION CENTER
FORECAST OF SLIGHT RISK OF SEVERE TSRAGR.  WILL PUT IN SOME TEMPO
GROUPS SINCE MOS-GUIDANCE INDICATE NEAR 50 PERCENT CHANCE OF
AFTERNOON/EVENING TSRA AT ALL AIRPORTS.  THEN A SECOND SHORTWAVE
CROSSES DURING THE LATE NIGHT/END OF TAF PERIOD TO THREATEN AT LEAST
SHOWERS FOR THE TAIL END OF THE PERIOD AT SOME OF THE AIRDROMES.  NO
SIGNIFICANT WIND OUTSIDE OF TSRA FOR TODAY.  MESSICK

&&

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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE POCATELLO ID
504 AM MDT THU JUL 6 2006

IDZ017>025-031-032-071115-
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-
504 AM MDT THU JUL 6 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO.

.DAY ONE...TODAY AND TONIGHT

MAINLY SCATTERED THUNDERSTORMS ARE FORECAST FOR MUCH OF EASTERN
IDAHO TODAY. THE BEST CHANCE FOR THUNDERSTORMS APPEARS TO BE OVER
THE CENTRAL IDAHO MOUNTAINS. DEEP MOISTURE AND MODERATE
INSTABILITY WILL ALLOW STRONG THUNDERSTORMS TO DEVELOP IN THAT
AREA. THE STRONGER STORMS HAVE THE POTENTIAL TO PRODUCE LARGE HAIL
AND VERY STRONG WIND GUSTS. SMALL HAIL AND GUSTY WINDS ARE
POSSIBLE OVER THE REMAINDER OF EASTERN IDAHO THROUGH THE EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. A SERIES OF
DISTURBANCES ARE EXPECTED EVERY COUPLE DAYS ACROSS EASTERN IDAHO.
ENOUGH INSTABILITY WILL BE PRESENT EACH DAY TO ALLOW ISOLATED TO
SCATTERED THUNDERSTORMS TO DEVELOP...MAINLY OVER THE HIGHER
TERRAIN THROUGHOUT THE REGION.

.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.