Radar indicated about 2 to 3 inches of rainfall in southern Cassia County near Utah border. Birch Creek and Goose Creek roads flooded in the Oakley area and Lynn Road in Almo flooded and washed out.
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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.
Radar indicated about 2 to 3 inches of rainfall in southern Cassia County near Utah border. Birch Creek and Goose Creek roads flooded in the Oakley area and Lynn Road in Almo flooded and washed out. The roads were strewn with debris, branches and trees.
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 Sep 2, 11:59 AM MST, 5 hours 1 minute earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE POCATELLO ID 1259 PM MDT MON SEP 2 2013 .SHORT TERM...TONIGHT THROUGH WEDNESDAY. SOUTHERLY FLOW AHEAD OF A DEEPENING UPPER LOW OFF THE PAC NW COAST WILL CONTINUE TO STREAM MONSOON MOISTURE INTO ID THRU WED. PRECIPITABLE WATER VALUES ARE EXCEPTIONALLY HIGH TODAY...THUS THE HEAVY RAINFALL AMOUNTS. PRECIPITATION WILL REMAIN WIDESPREAD MAINLY OVER THE EASTERN HALF OF THE FCST AREA THIS AFTN..THEN TAPER OFF EARLY THIS EVENING. SHORT RANGE MODEL IS SHOWING SHOWERS DEVELOPING OVERNIGHT IN THE CENTRAL MTNS. SHOWERS AND ISOLD TSTMS WILL DEVELOP AGAIN ON TUE... WITH LOCALLY HEAVY RAINFALL AMOUNTS IN THE CENTRAL MTNS. SHOWERS AND ISOLD TSTMS WILL DEVELOP AGAIN ON WED...BUT NOT LOOKING QUITE AS WIDESPREAD. .LONG TERM...THURSDAY THROUGH MONDAY. SHOWERS AND TSTMS ARE A THREAT AGAIN ON THU AS THE UPPER LOW MOVES INTO OR. THE UPPER LOW BEGINS TO MOVE TO THE NORTH BY FRI...BEGINNING A DRYING TREND WHICH WILL GO THRU THE WEEKEND. HEDGES && .AVIATION...OCCASIONAL SHOWERS AND THUNDERSTORMS WILL CONTINUE ACROSS EASTERN IDAHO. DURING PERIODS OF HEAVY RAIN...WE HAVE SEEN CEILINGS AND VISIBILITY DROP TO MVFR/IFR. THE FOCUS OF THE RAIN SHIFTS WESTWARD OVERNIGHT AND TUESDAY...BUT JUST ABOUT ANYONE DURING THE PERIOD HAS A CHANCE OF SHOWERS/STORMS. WE ARE CARRYING AT LEAST VCSH/VCTS FOR ALL SITES...AND -SHRA VCTS DURING TIMES WHERE SHOWERS ARE THE PREDOMINANT WEATHER. KEYES && .FIRE WEATHER...AN EXTREMELY MOIST AIRMASS WILL CONTINUE ACROSS THE AREA THROUGH TOMORROW. WE HAVE HAD HEAVY RAIN AND FLOODING/DEBRIS FLOWS ACROSS PORTIONS OF ZONES 427 AND 413 ALREADY TODAY. THE FOCUS OF MORE WIDESPREAD RAIN AND THUNDER WILL SHIFT OVERNIGHT TO THE WESTERN FIRE DISTRICTS. WE ARE EXPECTING MORE HEAVY RAIN AND THE THREAT OF FLOODING/DEBRIS FLOWS OVER THOSE AREAS. THAT SAID...PRETTY MUCH ANYONE HAS A CHANCE OF SHOWERS AND STORMS WITH POTENTIALLY HEAVY RAINFALL. MONSOON MOISTURE WILL KEEP THE THREAT IN PLACE UNTIL THE END OF THE WEEK. THAT IS WHEN A LOW TRACKS EASTWARD TO OUR NORTH...BUT WILL PULL A COOLER/DRIER AIRMASS INTO EASTERN IDAHO OVER THE WEEKEND. KEYES && .PIH WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH FROM MIDNIGHT MDT TONIGHT THROUGH TUESDAY EVENING IDZ018-031-032. FLASH FLOOD WATCH UNTIL 10 PM MDT THIS EVENING IDZ022>025. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE POCATELLO ID 443 AM MDT MON SEP 2 2013 IDZ017>025-031-032-031045- 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- 443 AM MDT MON SEP 2 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN IDAHO. .DAY ONE...TODAY AND TONIGHT EXPECT HEAVY RAINFALL TODAY OVER THE SOUTHERN AND SOUTHEAST HIGHLANDS WHERE A FLASH FLOOD WATCH HAS BEEN ISSUED. HEAVY RAINFALL WILL MOVE OVER THE CENTRAL MOUNTAINS TONIGHT INTO TUESDAY PROMPTING ANOTHER FLASH FLOOD WATCH PARTICULARLY OVER BURN SCARS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY LOOK FOR HEAVY RAINFALL TUESDAY PARTICULARLY OVER THE CENTRAL MOUNTAINS WHERE A FLASH FLOOD WATCH IS IN EFFECT. ADDITIONAL RAINFALL IS EXPECTED LATER IN THE WEEK POSSIBLY WARRANTING FUTURE FLASH FLOOD WATCHES. .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.
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
144 PM MDT MON SEP 02 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0144 PM HEAVY RAIN 2 WNW DOWNEY 42.44N 112.16W
09/02/2013 E0.30 INCH BANNOCK ID TRAINED SPOTTER
0.30 INCHES RAIN FALL FROM NOON TO 130 THIS AFTERNOON
&&
DPHELPSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
203 PM MDT MON SEP 02 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0203 PM HEAVY RAIN 2 NE POCATELLO 42.90N 112.44W
09/02/2013 M0.73 INCH BANNOCK ID CO-OP OBSERVER
0.73 INCHES RAIN FALL SINCE 630 AM THIS MORNING WITH
HEAVY RAIN OCCURING NOW
&&
DPHELPSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
246 PM MDT MON SEP 02 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0230 PM HEAVY RAIN 1 E CLIFTON 42.18N 111.98W
09/02/2013 E1.00 INCH FRANKLIN ID TRAINED SPOTTER
1.00 ONE INCH RAIN FALL SINCE 6 AM THIS MORNING
&&
DPHELPSPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
250 PM MDT MON SEP 02 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0227 PM HEAVY RAIN E POCATELLO 42.88N 112.47W
09/02/2013 M0.83 INCH BANNOCK ID NWS EMPLOYEE
STORM TOTAL SINCE 6AM. EAST BENCH ABOVE THE HOSPITAL.
&&
JKEYESPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE POCATELLO
452 PM MDT MON SEP 02 2013
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0449 PM HEAVY RAIN 3 W LAVA HOT SPRINGS 42.62N 112.07W
09/02/2013 M2.17 INCH BANNOCK ID MESONET
2.17 INCHES OF RAIN FALL SINCE NOON TODAY
&&
DPHELPSSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE POCATELLO ID
544 PM MDT MON SEP 2 2013
IDZ017-022-030045-
MINIDOKA ID-CASSIA ID-
544 PM MDT MON SEP 2 2013
THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY FOR...
WESTERN CASSIA COUNTY IN SOUTH CENTRAL IDAHO
SOUTHWESTERN MINIDOKA COUNTY IN SOUTH CENTRAL IDAHO
UNTIL 645 PM MDT
AT 536 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
CLUSTER OF THUNDERSTORMS 20 MILES SOUTHWEST NEAR THE
NEVADA-UTAH-IDAHO TRIPPLE POINT...MOVING NORTHEAST AT 20 MPH.
WIND GUSTS UP TO 45 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
BRIEF HEAVY RAIN.
LOCATIONS IMPACTED INCLUDE...
MARION...AND OAKLEY...
LAT...LON 4199 11397 4199 11412 4199 11413 4224 11419
4260 11377 4216 11366 4198 11381 4198 11397
TIME...MOT...LOC 2343Z 220DEG 15KT 4222 11409 4204 11404
4191 11418
HUSTONThe Pocatello radar (KSFX), 136 km away, was scanning. The volume nearest the first event began at 00:04 UTC.
1 flash flood. Local standard time, as filed.
Radar indicated about 2 to 3 inches of rainfall in southern Cassia County near Utah border. Birch Creek and Goose Creek roads flooded in the Oakley area and Lynn Road in Almo flooded and washed out. The roads were strewn with debris, branches and trees.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2013Every state in 2013This day in weather historyWarnings in Idaho, September 2013
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: 478237.