NOAA NWS / Event history
Flash Flood Watch issued October 21 at 11:47AM MDT until October 23 at 6:00PM MDT by NWS Pocatello ID
Flash Flood Watch · Upper Snake River Plain; Wood River Foothills. Severe; possible; urgency: future.
- Bulletin issued
- 21 October 2026 at 17:47 UTC
- First saved by us
- 21 October 2026 at 17:55 UTC
- Last included in a daily record
- 21 October 2026
The linked daily edition preserves what we captured that UTC day; this event page is not a live warning.
- Source classification
- Severe · Source alert
A recent feed check does not mean a new observation. This page preserves source records; it does not establish current safety or warning status.
- Issuer / area
- NWS Pocatello ID · Upper Snake River Plain; Wood River Foothills
- Certainty / urgency
- Possible / Future
- Message expiry (not hazard end)
- 22 October 2026 at 12:00 UTC
- Forecast onset / end
- 23 October 2026 at 03:00 UTC / 24 October 2026 at 00:00 UTC
Archived official description
* WHAT...Flash flooding and debris flows caused by excessive rainfall are possible over the Big Rock burn scar and Ohio burn scar. * WHERE...Portions of central and southeast Idaho, including the following areas, in central Idaho, Wood River Foothills. In southeast Idaho, Upper Snake River Plain. * WHEN...From Thursday evening through Friday afternoon. * IMPACTS...Heavy rainfall over the Big Rock and Ohio burn scar is expected up to and during the period of the watch. Residents near the Big Rock and Ohio burn scar should prepare for potential debris flow. 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 and Ohio 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
Instructions in this archived message
You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.
The saved record
What changed
0 updates · 1 first record
Each update compares two versions we saved. This may not include every update from the source. A missing report does not mean an event has ended.
First saved record · 21 October 2026 at 17:55 UTC
Saved by us
Starting point
First saved record
Our first saved version of Flash Flood Watch issued October 21 at 11:47AM MDT until October 23 at 6:00PM MDT by NWS Pocatello ID. We have no earlier saved version to compare.
Bulletin issued: 21 October 2026 at 17:47 UTC
View saved version 1
Original saved fields, unchanged. This is our record, not an archived copy of the external webpage.
{ "id": "nws:e21656081c1ccf0274c0c760", "authorityId": "urn:oid:2.49.0.1.840.0.563b5ba1a13c55c252c73b661ef2529d0405feaa.002.1", "sender": "w-nws.webmaster@noaa.gov", "references": [], "category": "weather", "title": "Flash Flood Watch issued October 21 at 11:47AM MDT until October 23 at 6:00PM MDT by NWS Pocatello ID", "eventType": "Flash Flood Watch", "occurredAt": "2026-10-21T17:47:00.000Z", "issuedAt": "2026-10-21T17:47:00.000Z", "timeBasis": "Bulletin issued", "effectiveAt": "2026-10-21T17:47:00.000Z", "onsetAt": "2026-10-23T03:00:00.000Z", "expiresAt": "2026-10-22T12:00:00.000Z", "forecastEndAt": "2026-10-24T00:00:00.000Z", "severity": "Severe", "urgency": "Future", "certainty": "Possible", "messageType": "Alert", "status": "Source alert", "place": "Upper Snake River Plain; Wood River Foothills", "coordinates": null, "issuer": "NWS Pocatello ID", "summary": "Flash Flood Watch · Upper Snake River Plain; Wood River Foothills. Severe; possible; urgency: future.", "description": "* WHAT...Flash flooding and debris flows caused by excessive rainfall\nare possible over the Big Rock burn scar and Ohio burn scar.\n\n* WHERE...Portions of central and southeast Idaho, including the\nfollowing areas, in central Idaho, Wood River Foothills. In\nsoutheast Idaho, Upper Snake River Plain.\n\n* WHEN...From Thursday evening through Friday afternoon.\n\n* IMPACTS...Heavy rainfall over the Big Rock and Ohio burn scar is\nexpected up to and during the period of the watch. Residents near\nthe Big Rock and Ohio burn scar should prepare for potential debris\nflow. Be sure to stay up to date with information from local\nauthorities. Heavy rainfall could trigger flash flooding and debris\nflows in and near recent wildfire burn scars.\n\n* ADDITIONAL DETAILS...\n- National Weather Service Meteorologists are forecasting heavy\nrainfall over the Big Rock and Ohio burn scar, which may lead to\nflash flooding and debris flows.\n- Some locations that may experience flash flooding include...\nHeise.\n- http://www.weather.gov/safety/flood", "instruction": "You should monitor later forecasts and be prepared to take action\nshould Flash Flood Warnings be issued.", "url": "https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.563b5ba1a13c55c252c73b661ef2529d0405feaa.002.1", "source": "nws", "sourceName": "NOAA NWS" }Visit the external source ↗The external page may have changed since this version was saved.