Extensive rainfall through the month caused flooding in Swanlake near Swan Lake. Several homes had 2 to 3 inches of water with one basement completely full with water.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PIH wrote it up.
Extensive rainfall through the month caused flooding in Swanlake near Swan Lake. Several homes had 2 to 3 inches of water with one basement completely full with water.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Pocatello, ID wrote its last area forecast discussion before the first event at Jun 14, 1:59 AM MST, 3 hours 1 minute earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 259 AM MDT SUN JUN 14 2009 .DISCUSSION...ELONGATED TROUGH STRETCHING INTO NORTHERN CALIFORNIA THIS MORNING EXPECTED TO PUSH INTO SOUTHERN IDAHO TODAY. ANOTHER ROUND OF SHOWERS AND THUNDERSTORMS EXPECTED...AND SHOULD INCREASE THIS AFTERNOON WITH THE LOW MOVING CLOSER TO THE AREA. PRECIPITABLE WATER AMOUNTS REMAIN HIGH WITH MODEL AMOUNTS APPROACHING 1 INCH. WITH A SLIGHT BREAK IN THE SHOWERS THIS MORNING AND SOME BREAKS IN THE CLOUDS...STRONG THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND EVENING. IN PARTICULAR...HEAVY RAINFALL IS EXPECTED BUT SMALL HAIL AND GUSTS ARE ALSO POSSIBLE. A FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TONIGHT FOR MOUNTAINOUS AREAS DUE TO THESE SHOWERS TRAINING OVER AREAS THAT HAVE RECENTLY RECEIVED LARGE PRECIPITATION AMOUNTS. UPPER LOW FINALLY DRIFTS EAST OF THE AREA MONDAY NIGHT WITH SPLIT FLOW DEVELOPING ON TUESDAY. AS A RESULT...EXPECT SOMEWHAT OF A BREAK FROM SHOWERS AND THUNDERSTORMS WITH ONLY SLIGHT CHANCES. MODELS CONTINUE TO STRUGGLE WITH CONSISTENCY AND AGREEMENT FROM MID-WEEK ONWARD. THE GFS POINTS TO A RIDGE SETTING UP OVER THE GREAT BASIN WITH A MUCH DRIER PATTERN IN STORE. THE ECMWF HOWEVER DEVELOPS A DEEP LOW IN THE EASTERN PACIFIC AND THROWS IDAHO INTO A WETTER AND MORE ZONAL/SOUTHWEST FLOW. LOW CONFIDENCE REMAINS AS WELL AS CLIMO TYPE POPS. TEMPERATURES APPEAR TO MODERATE AS WELL AND RISE ABOVE NORMAL BY THE END OF THE WEEK. HANKO AND TUESDAY...HOWEVER SCATTERED INTO TUESDAY. AIRMASS ALOFT REMAINS CYCLONIC WITH GOOD INSTABILITY SO EXPECT THUNDERSTORMS AGAIN ON MONDAY. TUESDAY MAY BE THE DRIEST DAY OF THE NEXT WEEK WITH TRANSITORY RIDGE OVERHEAD AND NEXT PACIFIC LOW DIGGING INTO CENTRAL CALIFORNIA. && .AVIATION...AN UPPER LOW OVER THE NRN SIERRA THIS MORNING WILL GRADUALLY ADVANCE NE THROUGH SRN IDAHO THIS AFTERNOON/EVE PROMOTING ANOTHER ROUND OF WIDESPREAD SHOWERS AND THUNDERSTORMS. VFR CONDITIONS ANTICIPATED THROUGHOUT THE SNAKE RIVER PLAIN WITH TEMPORARY MVFR CONDITIONS IN TSTMS FROM 18Z-03Z SUNDAY AFTERNOON/EVE. MODELS SUGGEST KSUN WILL SEE LOWER CIGS AND CURRENT OBSERVATIONS HAVE MOVED IN THAT DIRECTION. THUS WILL TREND WITH A LOWER MVFR CIG AT KSUN THROUGH THE PERIOD. HUSTON && .FIRE WEATHER...A LOW PRESSURE SYSTEM POSITIONED OVER THE NORTHERN SIERRA THIS MORNING WILL CONTINUE TO MIGRATE NE INTO SRN IDAHO THIS AFTERNOON PROMOTING NUMEROUS SHOWERS AND SCATTERED THUNDERSTORMS. SOME STORMS MAY PRODUCE HEAVY RAIN. WET AND UNSTABLE CONDITIONS CONTINUE THROUGH WEDNESDAY AS ADDITIONAL PACIFIC DISTURBANCES ADVANCE INTO THE WRN STATES. HUSTON && .PIH WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH THROUGH LATE TONIGHT FOR IDZ018-019-022>025- 031-032. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 421 AM MDT SUN JUN 14 2009 IDZ017>025-031-032-151030- 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- 421 AM MDT SUN JUN 14 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT SHOWERS AND THUNDERSTORMS ARE EXPECTED TO SPREAD REDEVELOP AGAIN TODAY...BECOMING NUMEROUS ACROSS EASTERN IDAHO BY THIS AFTERNON. LOCALLY HEAVY RAINFALL WILL AGAIN BE A THREAT WITH THE STRONGER THUNDERSTORMS. SMALL HAIL AND GUSTY WINDS ARE ALSO POSSIBLE. A FLASH FLOOD WATCH IS IN EFFECT UNTIL LATE TONIGHT FOR THE MOUNTAINOUS PORTIONS OF EASTERN IDAHO. SMALL STREAMS AND URBAN AREAS WILL BE PARTICULARLY VULNERABLE TO FLASH FLOODING. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY PERIODIC SHOWERS AND THUNDERSTORMS ARE EXPECTED THROUGH NEXT WEEKEND...HOWEVER PRECIPITATION CHANCES WILL GRADUALLY DIMINISH AS THE WEEK PROGRESSES. .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.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
Extensive rainfall through the month caused flooding in Swanlake near Swan Lake. Several homes had 2 to 3 inches of water with one basement completely full with water.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2009Every state in 2009This day in weather historyWarnings in Idaho, June 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 182433.