Alert archive / Montana / Flash Flood Warnings in 2026
Flash Flood Warning 2, NWS Missoula, MT
NWS Missoula, MT issued this flash flood warning at Jul 17, 2026, 4:15 PM MDT for Granite County, Montana. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 17, 2026, 4:15 PM MDT (22:15 UTC)
- Expired
- Jul 17, 2026, 6:39 PM MDT
- In force
- 2 hr
- Issued by
- NWS Missoula, MT
- Area
- Storm-based polygon
- Flood severity
- None
County Granite County, MT
The radar
The Missoula radar (KMSX), 75 km from the middle of the area, began a volume at 22:16 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The text
As transmitted.
911
WGUS55 KMSO 172215
FFWMSO
MTC039-180300-
/O.NEW.KMSO.FF.W.0002.260717T2215Z-260718T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Missoula MT
415 PM MDT Fri Jul 17 2026
The National Weather Service in Missoula has issued a
* Flash Flood Warning for...
West Central Granite County in west central Montana...
* Until 900 PM MDT.
* At 415 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Mainly rural areas of West Central Granite County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4644 11368 4635 11369 4635 11360 4645 11357
4645 11364
FLASH FLOOD...RADAR INDICATED
$$1 follow-up statement
477
WGUS75 KMSO 180039 RRA
FFSMSO
Flash Flood Statement
National Weather Service Missoula MT
639 PM MDT Fri Jul 17 2026
MTC039-180049-
/O.CAN.KMSO.FF.W.0002.000000T0000Z-260718T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Granite MT-
639 PM MDT Fri Jul 17 2026
...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL GRANITE
COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flood Watch remains in effect until 900 PM MDT for a portion of
west central Montana.
&&
LAT...LON 4644 11368 4635 11369 4635 11360 4645 11357
4645 11364
$$The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 6:02 PM MDT | Special Weather Statement | MSO | Sanders | 58 min |
| Jul 16, 6:05 PM MDT | Special Weather Statement | MSO | Lincoln | 55 min |
| Jul 16, 6:19 PM MDT | Areal Flood Advisory | MSO | Silver Bow | 56 min |
| Jul 16, 6:41 PM MDT | Special Weather Statement | MSO | Silver Bow | 34 min |
| Jul 17, 5:29 AM MDT | Special Weather Statement | MSO | Lincoln | 31 min |
| Jul 17, 2:59 PM MDT | Special Weather Statement | MSO | Deer Lodge | 31 min |
| Jul 17, 3:18 PM MDT | Special Weather Statement | MSO | Powell | 27 min |
| Jul 17, 3:19 PM MDT | Special Weather Statement | MSO | Granite | 26 min |
| Jul 17, 3:50 PM MDT | Areal Flood Advisory | MSO | Deer Lodge | 55 min |
| Jul 17, 3:54 PM MDT | Special Weather Statement | MSO | Ravalli | 36 min |
| Jul 17, 4:08 PM MDT | Special Weather Statement | MSO | Deer Lodge | 22 min |
| Jul 17, 4:14 PM MDT | Flash Flood Warning | MSO | Granite | 2 hr |
| Jul 17, 4:17 PM MDT | Flood Watch | MSO | Deer Lodge, Granite, Missoula, Powell, Ravalli, Silver Bow | 3 hr |
| Jul 17, 4:27 PM MDT | Areal Flood Advisory | MSO | Granite | 3 hr |
| Jul 17, 4:37 PM MDT | Flash Flood Warning | MSO | Granite | 2 hr |
| Jul 17, 4:51 PM MDT | Special Weather Statement | MSO | Powell | 24 min |
| Jul 17, 5:09 PM MDT | Flash Flood Warning | MSO | Missoula, Powell | 93 min |
Nearby
Flash Flood Warnings in Montana, 2026Every flash flood warning in 2026
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.