Weather alerts in Montana, 2020
2,335 weather alerts in 2020, 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 2020. Tap one for its archive.
- Alerts
- 2,335
- Warnings
- 451
- Watches
- 148
- Advisories
- 365
- Busiest month
- July501 alerts
- Busiest day
- May 20, 202084 alerts
Over time
By month
The alerts
2,335 alerts are too many to list on one page. Narrow it to a product above, to a month in the chart, or to a county.
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
By county
Every county with at least one alert. A county page lists each alert that covered it.
- Valley County213
- Phillips County206
- McCone County184
- Garfield County170
- Missoula County160
- Sweet Grass County151
- Petroleum County142
- Carter County139
- Powell County135
- Cascade County135
- Stillwater County127
- Park County126
- Flathead County125
- Lake County125
- Fergus County123
- Gallatin County122
- Judith Basin County120
- Granite County119
- Lewis and Clark County116
- Big Horn County113
- Ravalli County113
- Silver Bow County109
- Roosevelt County109
- Wheatland County108
- Sheridan County108
- Yellowstone County107
- Madison County105
- Richland County103
- Golden Valley County102
- Daniels County102
- Custer County101
- Wibaux County101
- Carbon County100
- Fallon County100
- Dawson County100
- Sanders County100
- Deer Lodge County100
- Powder River County98
- Rosebud County98
- Chouteau County98
The busiest days
Days with the most alerts issued, by UTC date.
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. Rebuilt daily.