Heavy rain caused mudslides over the Castle Rock Burn area in Ketchum.
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.
Heavy rain caused mudslides over the Castle Rock Burn area in Ketchum.
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 1, 1:03 PM MST, 17 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 203 PM MDT MON JUN 1 2009 .SHORT TERM...TONIGHT THROUGH THURSDAY. A STRONG SLOW MOVING LOW PRESSURE SYSTEM OFF OF THE COAST OF CALIFORNIA CONTINUES TO SUPPLY SOUTHEAST IDAHO WITH PLENTY OF MOISTURE. THIS MOISTURE IS INTERACTING WITH AFTERNOON HEATING TO PRODUCE SCATTERED THUNDERSTORMS ACROSS THE REGION. IN ADDITION...MINOR PIECES OF ENERGY ARE BEING EJECTED FROM THE LOW. ONE SUCH PIECE IS EXPECTED TO MOVE INTO THE AREA TONIGHT. THIS ENERGY MAY KEEP CONVECTION GOING OVER PORTIONS OF THE REGION THROUGH THE NIGHT. THIS TREND IS EXPECTED TO CONTINUE THROUGH THE SHORT TERM PERIODS. THESE THUNDERSTORMS DUE CONTAIN A HEALTHY AMOUNT OF RAINFALL. IF THEY LINER OVER AN AREA FOR ANY AMOUNT OF TIME...FLASH FLOODING COULD BE A POSSIBILITY. GUSTY WINDS MAY BE POSSIBLE IN SOME OF THE STRONGER THUNDERSTORM CELLS AS WELL. .LONG TERM...THURSDAY THROUGH MONDAY. ECMWF/GFS CONTINUE TO INDICATE LARGE CUT OFF LOW PRESSURE SYSTEM OFF THE CALIF COAST WILL MOVE INLAND ON FRI AS BLOCKING PATTERN BREAKS DOWN. THIS SYSTEM TRANSITIONS TO AN OPEN TROUGH AND MOVES THROUGH THE INTERMOUNTAIN REGION SAT AS YET ANOTHER SHORTWAVE IN THE NORTHERN BRANCH DIVES SOUTHWARD ON SUNDAY. MOISTURE WILL CONTINUE TO PUMP INTO AREA FROM THE SOUTH AND SMALL DISTURBANCES WILL MOVE THRU LONG WAVE PATTERN PRODUCING SHOWERS AND THUNDERSTORMS THROUGH THE WEEKEND. DSH && .AVIATION...SCATTERED SHOWERS AND THUNDERSTORMS TO CONTINUE FOR NEXT SEVERAL DAYS. CIGS/VIS EXPECTED TO REMAIN PREDOMINANTLY VFR HOWEVER SOME SHOWERS WILL PRODUCE HEAVY RAIN AND PERIODS OF MFVR CIGS AND IFR VIS. SURFACE WINDS WILL REMAIN LIGHT WITH WINDS OF 15 TO 25 MPH NEAR SHOWERS AND THUNDERSTORMS POSSIBLE. DSH && .FIRE WEATHER...MONSOON MOISTURE WILL CONTINUE TO FLOW INTO THE NORTHERN ROCKIES BENEATH AN UPPER LEVEL RIDGE WITH SCATTERED SHOWERS AND THUNDERSTORMS DURING THE AFTERNOON AND EVENING. MONSOON MOISTURE AT ALL LEVELS WILL RESULT IN WET THUNDERSTORMS...ALONG WITH HIGHER THAN NORMAL HUMIDITY LEVELS. THESE CONDITIONS ARE EXPECTED THROUGH THE END OF THE WEEK. DSH && .PIH WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 400 AM MDT MON JUN 1 2009 IDZ017>025-031-032-021300- 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- 400 AM MDT MON JUN 1 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT SCATTERED SHOWERS AND ISOLATED TO SCATTERED THUNDERSTORMS THIS AFTERNOON WILL DEVELOP LOCALIZED VERY HEAVY RAINFALL. THERE IS A POTENTIAL FOR MINOR FLOODING IN URBAN AREAS AND A REMOTE CHANCE OF FLASH FLOODING...ESPECIALLY IN STEEP TERRAIN. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH NEXT MONDAY DAILY AFTERNOON AND EVENING SHOWER AND THUNDERSTORM ACTIVITY WILL CONTINUE THROUGH AT LEAST SATURDAY AFTERNOON. THE THUNDERSTORM THREAT DECREASES AFTER THAT POINT. .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.
1 debris flow. Local standard time, as filed.
Three landslides were rported due to heavy rain over the Castle Rock burn area northwest of Ketchum pouring over Warm Springs Road.
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: 182320.