Alert archive / Montana / 1999
Weather alerts in Montana, May 1999
13 weather alerts in May 1999, 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 1999. Tap one for its archive.
- Alerts
- 13
- Warnings
- 11
- Watches
- 2
- Advisories
- 0
- Busiest day
- May 21, 19995 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 13, 6:51 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 64 min |
| May 13, 7:32 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 63 min |
| May 15, 3:00 PM MDT | Severe Thunderstorm Watch | SPC | Carter | 6 hr |
| May 21, 1:30 PM MDT | Tornado Warning | BYZ | Carter | 30 min |
| May 21, 2:00 PM MDT | Severe Thunderstorm Watch | SPC | Carter, Fallon, Wibaux | 6 hr |
| May 21, 2:36 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 64 min |
| May 21, 2:48 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 62 min |
| May 21, 3:52 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Yellowstone | 63 min |
| May 21, 7:06 PM MDT | Severe Thunderstorm Warning | GGW | Daniels, Sheridan | 64 min |
| May 29, 4:44 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 46 min |
| May 29, 4:57 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 53 min |
| May 29, 5:01 PM MDT | Severe Thunderstorm Warning | GGW | Prairie | 49 min |
| May 29, 5:34 PM MDT | Severe Thunderstorm Warning | BYZ | Fallon | 46 min |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 10 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 2 |
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 archive19982000
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.