Alert archive / Montana / River Flood Warnings

River Flood Warnings in Montana, 2020

18 river flood warnings in 2020. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of river flood warnings reaches back to 2005.

River Flood Warnings by county

Each county as a circle sized by its count in 2020. Tap one for its archive.

River Flood Warnings
18
Busiest month
March9 river flood warnings
Busiest day
June 1, 20203 river flood warnings

Over time

By month

The alerts

Every alert, in the order issued. Times are local, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeCountiesLasted
Mar 1, 9:06 PM MSTRiver Flood WarningGGWValley50 hr
Mar 4, 2:20 PM MSTRiver Flood WarningGGWValley24 hr
Mar 5, 9:29 PM MSTRiver Flood WarningGGWValley32 hr
Mar 6, 9:45 AM MSTRiver Flood WarningGGWValley6 days
Mar 7, 1:11 PM MSTRiver Flood WarningGGWValley58 hr
Mar 7, 1:11 PM MSTRiver Flood WarningGGWValley5 days
Mar 11, 12:38 AM MDTRiver Flood WarningGGWRoosevelt24 hr
Mar 31, 3:41 PM MDTRiver Flood WarningGGWValley41 hr
Mar 31, 3:47 PM MDTRiver Flood WarningGGWValley41 hr
May 19, 11:32 AM MDTRiver Flood WarningMSOMissoula15 days
May 31, 6:16 AM MDTRiver Flood WarningBYZCarbon21 days
May 31, 5:11 PM MDTRiver Flood WarningMSOFlathead41 hr
May 31, 8:33 PM MDTRiver Flood WarningBYZCarbon21 days
May 31, 8:37 PM MDTRiver Flood WarningBYZSweet Grass38 hr
Jun 1, 9:12 AM MDTRiver Flood WarningBYZPark, Sweet Grass21 days
Jun 1, 8:48 PM MDTRiver Flood WarningBYZStillwater, Yellowstone21 days
Jun 19, 7:53 AM MDTRiver Flood WarningTFXBeaverhead, Madison20 hr
Jun 29, 7:07 AM MDTRiver Flood WarningTFXLewis and Clark30 hr

By county

Every county with at least one alert. A county page lists each alert that covered it.

The busiest days

Days with the most alerts issued, by UTC date.

  1. June 1, 20203river flood warnings
  2. March 6, 20202river flood warnings
  3. March 7, 20202river flood warnings
  4. March 31, 20202river flood warnings
  5. May 31, 20202river flood warnings
  6. March 2, 20201river flood warnings
  7. March 4, 20201river flood warnings
  8. March 11, 20201river flood warnings
  9. May 19, 20201river flood warnings
  10. June 2, 20201river flood warnings
  11. June 19, 20201river flood warnings
  12. June 29, 20201river flood warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20192021

Sources

National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.