Alert archive / Montana / 1991

Weather alerts in Montana, May 1991

26 weather alerts in May 1991, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in May 1991. Tap one for its archive.

Alerts
26
Warnings
26
Watches
0
Advisories
0
Busiest day
May 20, 19919 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

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
May 11, 10:30 PM MDTTornado WarningGGWGarfield, Valley45 min
May 12, 1:32 AM MDTSevere Thunderstorm WarningGGWRichland58 min
May 12, 4:11 AM MDTSevere Thunderstorm WarningGGWRichland64 min
May 18, 6:52 PM MDTSevere Thunderstorm WarningBYZYellowstone68 min
May 18, 7:15 PM MDTSevere Thunderstorm WarningBYZCarbon, Yellowstone60 min
May 18, 7:42 PM MDTFlash Flood WarningMSOLewis and Clark, Teton4 hr
May 18, 7:42 PM MDTFlash Flood WarningTFXTeton4 hr
May 18, 8:57 PM MDTFlash Flood WarningMSOLewis and Clark, Pondera, Teton6 hr
May 18, 8:57 PM MDTFlash Flood WarningMSOGlacier6 hr
May 19, 11:56 PM MDTSevere Thunderstorm WarningBYZYellowstone64 min
May 20, 12:47 AM MDTSevere Thunderstorm WarningBYZMusselshell58 min
May 20, 1:07 AM MDTSevere Thunderstorm WarningBYZSweet Grass68 min
May 20, 1:53 AM MDTSevere Thunderstorm WarningBYZStillwater67 min
May 20, 1:24 PM MDTSevere Thunderstorm WarningBYZStillwater66 min
May 20, 2:26 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Wheatland64 min
May 20, 3:22 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Musselshell68 min
May 20, 4:04 PM MDTSevere Thunderstorm WarningTFXFergus56 min
May 20, 4:35 PM MDTSevere Thunderstorm WarningBYZMusselshell55 min
May 20, 6:41 PM MDTSevere Thunderstorm WarningGGWGarfield, Valley64 min
May 20, 6:45 PM MDTFlash Flood WarningTFXBlaine, Hill3 hr
May 20, 11:08 PM MDTTornado WarningBYZCuster37 min
May 21, 10:50 PM MDTSevere Thunderstorm WarningBYZCuster55 min
May 21, 11:29 PM MDTSevere Thunderstorm WarningBYZDawson, Prairie61 min
May 25, 6:05 PM MDTTornado WarningGGWSheridan55 min
May 25, 6:17 PM MDTTornado WarningGGWRoosevelt58 min
May 31, 4:46 PM MDTTornado WarningBYZDawson44 min

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

ProductAlerts
Severe storms
Severe Thunderstorm Warning16
Tornado Warning5
Flooding
Flash Flood Warning5

By county

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

Nearby

Alerts in force nowTornadoes on recordThe radar archive19901992

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.