Heavy rain inundated much of South Central Idaho over a two day period from the 5th through the 6th. Three to six inches of rain fell across the area causing significant flooding in Twin Falls and surrounding locations.
Every event with a place to put it. Tap one for its entry below.
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 BOI wrote it up.
Heavy rain inundated much of South Central Idaho over a two day period from the 5th through the 6th. Three to six inches of rain fell across the area causing significant flooding in Twin Falls and surrounding locations.
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 Boise, ID wrote its last area forecast discussion before the first event at Aug 5, 2:11 AM MST, 49 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BOISE ID 311 AM MDT TUE AUG 5 2014 .SHORT TERM...DEFORMATION AXIS AND MAIN PCPN AREAS HAVE BEEN SHIFTED SOUTH OF PREVIOUS FORECASTS. WE HAVE IT GENERALLY SOUTH OF THE SNAKE BASIN FOR THIS AFTERNOON AND EVENING...WITH A SEPARATE AREA IN THE BOISE MOUNTAINS. ON WEDNESDAY THE ERN PORTION OF MAIN PCPN IN IDAHO SHOULD EXPAND NWD. WE HAVE REMOVED THE TREASURE VALLEY FROM THE FLASH FLOOD WATCH. PREVIOUS WATCH WILL BE CONTINUED FOR THE REMAINING ZONES THIS AFTERNOON AND EVENING AS HEAVY SHOWERS AND SLOW- MOVING THUNDERSTORMS WILL DROP LOCALLY HEAVY RAIN. ANOTHER WATCH MAY BE NEEDED FOR THE SAME ZONES WEDNESDAY. MAX TEMPS TODAY AND WEDNESDAY WILL BE LIKE YESTERDAY...COOLEST IN SERN IDAHO ZONES ...RELATIVELY HOT IN THE DRIER OREGON ZONES. MIN TEMPS TONIGHT WILL BE ABOVE NORMAL DUE TO CLOUDS AND LOCAL WINDS. .LONG TERM...WEDNESDAY NIGHT THROUGH TUESDAY...BAND OF PRECIPITATION WILL SHIFT NORTH OF THE SNAKE RIVER WEDNESDAY NIGHT - INCREASING THE POTENTIAL FOR SHOWER/THUNDERSTORM DEVELOPMENT ACROSS THE TREASURE VALLEY AND CENTRAL IDAHO MOUNTAINS THROUGH THURSDAY. BY FRIDAY...THE BULK OF THE MOISTURE WILL BE FORCED EASTWARD...CONFINING SHOWERS AND THUNDERSTORMS TO SOUTHCENTRAL IDAHO. MODELS DO INDICATE A DEEPENING TROUGH OFF THE NORTHERN CALIFORNIA COASTLINE LATE FRIDAY...BUT STRENGTH AND TRACK REMAIN IN QUESTION. MAIN IMPACT WILL BE A SHIFT TO MORE SOUTHWESTERLY FLOW ALOFT AND A CONTINUED THREAT OF SHOWERS AND STORMS...ESPECIALLY ACROSS HIGHER TERRAIN. && .AVIATION...SCATTERED RAIN SHOWERS AND AFTERNOON THUNDERSTORMS ACROSS THE BOISE MOUNTAINS...AND NEAR AND SOUTH OF THE SNAKE RIVER...THROUGH 06Z WEDNESDAY. CLOUD DECKS GENERALLY VFR...BUT MODERATE RAINFALL MAY CAUSE MVFR IN SHOWERS AND THUNDERSTORMS. SURFACE WINDS GENERALLY LIGHT AND VARIABLE...EXCEPT IN THE VICINITY OF STORMS WHERE GUSTS TO 40 KTS ARE POSSIBLE. NORTHEASTERLY WINDS ALOFT WILL AVERAGE 20 KTS THROUGH 10K FT MSL. && .BOI WATCHES/WARNINGS/ADVISORIES... ID...FLASH FLOOD WATCH THROUGH THIS EVENING IDZ013-015-016-028>030. OR...NONE. && WEATHER.GOV/BOISE SHORT TERM...LC LONG TERM....MT AVIATION.....MT
The national radar mosaic for the moment the first event began.
2 flood, 1 heavy rain. Local standard time, as filed.
Most streets around the city were flooded many residents reported significant flood damage including flooded basements. Standing water covered roofs of cars in some areas. Flooding and damage to roadways was reported over much of the county.
Most streets and roads were flooded around the county. Extensive crop damage was reported across most of the county.
Middle Fork Road and many camping areas were closed due to flooding and mud slides.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2014Every state in 2014This day in weather historyWarnings in Idaho, August 2014
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: 541152, 541154, 541159.