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Home Return to list Flash Flood Watch 0004 Issued by the Pocatello Forecast Office
Action: New Issued At: 2026-08-12 01:44:08
188
WGUS65 KPIH 120643
FFAPIH
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pocatello ID
1243 AM MDT Wed Aug 12 2026
IDZ053-122100-
/O.NEW.KPIH.FF.A.0004.260813T1800Z-260814T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Upper Snake River Plain-
Including the cities of Idaho Falls, Rexburg, and St. Anthony
1243 AM MDT Wed Aug 12 2026
...FLASH FLOOD WATCH FOR THE BIG ROCK BURN SCAR IN EFFECT FROM
THURSDAY AFTERNOON THROUGH THURSDAY EVENING...
* WHAT...Flash flooding and debris flows caused by excessive rainfall
are possible over the Big Rock burn scar.
* WHERE...The Big Rock burn scar near Heise.
* WHEN...From Thursday afternoon through Thursday evening.
* IMPACTS...Heavy rainfall over the Big Rock burn scar is possible
Thursday afternoon into Thursday evening. Anyone in or near the Big
Rock burn scar should prepare for potential debris flow moving
through the Big Rock burn scar. Be sure to stay up to date with
information from local authorities. Heavy rainfall could trigger
flash flooding and debris flows in and near recent wildfire burn
scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall near the Big Rock burn scar, which may lead to flash
flooding and debris flows.
- Some locations that may experience flash flooding include...
Heise.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
13
Action: Continued Issued At: 2026-08-12 18:49:59
368
WGUS65 KPIH 122349
FFAPIH
Flood Watch
National Weather Service Pocatello ID
549 PM MDT Wed Aug 12 2026
IDZ053-131200-
/O.CON.KPIH.FF.A.0004.260813T1800Z-260814T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Upper Snake River Plain-
Including the cities of Rexburg, St. Anthony, and Idaho Falls
549 PM MDT Wed Aug 12 2026
...FLASH FLOOD WATCH FOR THE BIG ROCK BURN SCAR REMAINS IN EFFECT
FROM THURSDAY AFTERNOON THROUGH THURSDAY EVENING...
* WHAT...Flash flooding and debris flows caused by excessive rainfall
continue to be possible over the Big Rock burn scar.
* WHERE...The Big Rock burn scar near Heise.
* WHEN...From Thursday afternoon through Thursday evening.
* IMPACTS...Heavy rainfall over the Big Rock burn scar is expected
during the period of the watch. Anyone in or near the Big Rock burn
scar should prepare for potential debris flow moving through the
Big Rock burn scar. Be sure to stay up to date with information
from local authorities. Heavy rainfall could trigger flash flooding
and debris flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the Big Rock burn scar, which may lead to flash
flooding and debris flows.
- Some locations that may experience flash flooding include...
Heise.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
KB
Action: Time Extended Issued At: 2026-08-13 02:14:41
605
WGUS65 KPIH 130714
FFAPIH
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pocatello ID
114 AM MDT Thu Aug 13 2026
IDZ053-140400-
/O.EXT.KPIH.FF.A.0004.260813T1800Z-260814T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Upper Snake River Plain-
Including the cities of Rexburg, Idaho Falls, and St. Anthony
114 AM MDT Thu Aug 13 2026
...FLASH FLOOD WATCH FOR THE BIG ROCK BURN SCAR NOW IN EFFECT FROM
NOON MDT TODAY THROUGH THIS EVENING...
* WHAT...Flash flooding and debris flows caused by excessive rainfall
continue to be possible over the Big Rock burn scar.
* WHERE...The Big Rock burn scar near Heise.
* WHEN...From noon MDT today through this evening.
* IMPACTS...Heavy rainfall over the Big Rock burn scar is possible
Thursday afternoon into Thursday evening. Anyone in or near the Big
Rock burn scar should prepare for potential debris flow moving
through the Big Rock burn scar. Be sure to stay up to date with
information from local authorities. Heavy rainfall could trigger
flash flooding and debris flows in and near recent wildfire burn
scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall possible over the Big Rock burn scar, which may lead to
flash flooding and debris flows.
- Some locations that may experience flash flooding include...
Heise.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
13
Action: Continued Issued At: 2026-08-13 10:39:16
835
WGUS65 KPIH 131539
FFAPIH
URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Pocatello ID
939 AM MDT Thu Aug 13 2026
IDZ072-141200-
/O.NEW.KPIH.FF.A.0005.260814T1800Z-260816T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sawtooth/Stanley Basin-
Including the cities of Stanley
939 AM MDT Thu Aug 13 2026
...FLASH FLOOD WATCH FOR THE WAPITI BURN SCAR IN EFFECT FROM FRIDAY
AFTERNOON THROUGH SATURDAY EVENING...
* WHAT...Flash flooding and debris flows caused by excessive rainfall
are possible over the Wapiti burn scar.
* WHERE...A portion of central Idaho, including the following area,
Sawtooth/Stanley Basin.
* WHEN...From Friday afternoon through Saturday evening.
* IMPACTS...Heavy rainfall over the Wapiti burn scar is expected
during the period of the watch. Anyone in or near the Wapiti burn
scar should prepare for potential debris flow moving through the
Wapiti burn scar. Be sure to stay up to date with information from
local authorities. Heavy rainfall could trigger flash flooding and
debris flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the Wapiti burn scar, which may lead to flash
flooding and debris flows.
- Some locations that may experience flash flooding include...
Cape Horn Area and Banner Summit.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
IDZ053-140400-
/O.CON.KPIH.FF.A.0004.260813T1800Z-260814T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Upper Snake River Plain-
Including the cities of Rexburg, Idaho Falls, and St. Anthony
939 AM MDT Thu Aug 13 2026
...FLASH FLOOD WATCH FOR THE BIG ROCK BURN SCAR REMAINS IN EFFECT
THROUGH THIS EVENING...
* WHAT...Flash flooding and debris flows caused by excessive rainfall
continue to be possible over the Big Rock burn scar.
* WHERE...A portion of southeast Idaho, including the following area,
Upper Snake River Plain.
* WHEN...Through this evening.
* IMPACTS...Heavy rainfall over the Big Rock burn scar is expected
during the period of the watch. Anyone in or near the Big Rock burn
scar should prepare for potential debris flow moving through the
Big Rock burn scar. Be sure to stay up to date with information
from local authorities. Heavy rainfall could trigger flash flooding
and debris flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the Big Rock burn scar, which may lead to flash
flooding and debris flows.
- Some locations that may experience flash flooding include...
Heise.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
McKaughan
Action: Expired Issued At: 2026-08-13 22:41:53
566
WGUS65 KPIH 140341
FFAPIH
Flood Watch
National Weather Service Pocatello ID
941 PM MDT Thu Aug 13 2026
IDZ053-140445-
/O.EXP.KPIH.FF.A.0004.000000T0000Z-260814T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Upper Snake River Plain-
Including the cities of Idaho Falls, St. Anthony, and Rexburg
941 PM MDT Thu Aug 13 2026
...FLASH FLOOD WATCH FOR THE BIG ROCK BURN SCAR WILL EXPIRE AT 10 PM
MDT THIS EVENING...
The Flash Flood Watch for the Big Rock burn scar will expire for a
portion of southeast Idaho, including the following area, Upper Snake
River Plain.
The flash flooding threat has ended. Therefore, the Flash Flood Watch
will expire at 10 PM MDT this evening.
$$
IDZ072-140500-
/O.CON.KPIH.FF.A.0005.260814T1800Z-260816T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Sawtooth/Stanley Basin-
Including the cities of Stanley
941 PM MDT Thu Aug 13 2026
...FLASH FLOOD WATCH FOR THE WAPITI BURN SCAR REMAINS IN EFFECT FROM
FRIDAY AFTERNOON THROUGH SATURDAY EVENING...
* WHAT...Flash flooding and debris flows caused by excessive rainfall
continue to be possible over the Wapiti burn scar.
* WHERE...A portion of central Idaho, including the following area,
Sawtooth/Stanley Basin.
* WHEN...From Friday afternoon through Saturday evening.
* IMPACTS...Heavy rainfall over the Wapiti burn scar is expected
during the period of the watch. Anyone in or near the Wapiti burn
scar should prepare for potential debris flow moving through the
Wapiti burn scar. Be sure to stay up to date with information from
local authorities. Heavy rainfall could trigger flash flooding and
debris flows in and near recent wildfire burn scars.
* ADDITIONAL DETAILS...
- National Weather Service Meteorologists are forecasting heavy
rainfall over the Wapiti burn scar, which may lead to flash
flooding and debris flows.
- Some locations that may experience flash flooding include...
Cape Horn Area and Banner Summit.
- http://www.weather.gov/safety/flood
PRECAUTIONARY/PREPAREDNESS ACTIONS...
You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.
&&
$$
Messick
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