Alert archive / Montana / River Flood Advisories in 2020
River Flood Advisory 3, NWS Missoula, MT
NWS Missoula, MT issued this river flood advisory at May 20, 2020, 11:55 AM MDT for Ravalli County, Montana. It took effect at May 21, 2020, 1:30 AM MDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- May 20, 2020, 11:55 AM MDT (17:55 UTC)
- In effect from
- May 21, 2020, 1:30 AM MDT
- Expired
- May 21, 2020, 10:42 AM MDT
- In force
- 9 hr
- Issued by
- NWS Missoula, MT
- Area
- Storm-based polygon
County Ravalli County, MT
The radar
The Missoula radar (KMSX), 107 km from the middle of the area, began a volume at 17:58 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 river
Written for the forecast point Bitterroot River at Bell Crossing near Victor (VICM8). The gauge peaked at 10.58 ft at May 20, 2020, 9:00 PM MDT.
- Action stage
- 11 ft
- Minor stage
- 11.5 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 12350250, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 19, 6:35 PM MDT | Special Weather Statement | MSO | Silver Bow | 25 min |
| May 19, 11:29 PM MDT | Special Weather Statement | MSO | Deer Lodge | 46 min |
| May 19, 11:39 PM MDT | Special Weather Statement | MSO | Silver Bow | 66 min |
| May 20, 11:15 AM MDT | Areal Flood Advisory | MSO | Missoula, Ravalli | 25 hr |
| May 20, 11:55 AM MDT | River Flood Advisory | MSO | Ravalli | 23 hr |
Nearby
River Flood Advisories in Montana, 2020Every river flood advisory in 2020
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; the gauge from the NWS water service and the USGS.