Weather alerts in Montana, May 2009

73 weather alerts in May 2009, 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 2009. Tap one for its archive.

Alerts: 73
Warnings: 35
Watches: 14
Advisories: 23
Busiest day: May 19, 20098 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 1, 10:34 AM MDT	Areal Flood Advisory	TFX	Blaine, Cascade, Chouteau, Fergus, Glacier, Hill and 6 more	3 days
May 1, 1:23 PM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Valley	8 hr
May 3, 1:37 PM MDT	Mesoscale Discussion	SPC	Beaverhead, Madison	113 min
May 4, 9:44 AM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Valley	9 hr
May 5, 3:49 AM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Valley	15 hr
May 5, 10:40 AM MDT	Wind Advisory	MSO	Flathead, Lake, Lincoln, Mineral, Missoula, Sanders	7 hr
May 5, 3:12 PM MDT	Severe Thunderstorm Warning	TFX	Fergus	33 min
May 5, 3:54 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, Petroleum	33 min
May 5, 4:56 PM MDT	Severe Thunderstorm Warning	GGW	Garfield	64 min
May 6, 3:20 AM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Valley	18 hr
May 6, 2:13 PM MDT	Lake Wind Advisory	MSO	Flathead, Lake, Sanders	30 hr
May 7, 3:24 AM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Valley	17 hr
May 7, 3:55 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone, Valley	34 min
May 7, 7:49 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau, Hill	35 min
May 8, 1:36 PM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Phillips, Valley	6 hr
May 8, 5:38 PM MDT	Severe Thunderstorm Warning	TFX	Chouteau	52 min
May 10, 12:21 PM MDT	Severe Thunderstorm Warning	GGW	Dawson	9 min
May 10, 12:42 PM MDT	Severe Thunderstorm Warning	GGW	Dawson	33 min
May 10, 12:57 PM MDT	Severe Thunderstorm Warning	GGW	Petroleum, Phillips	48 min
May 10, 2:42 PM MDT	Severe Thunderstorm Warning	GGW	Roosevelt	23 min
May 11, 2:41 PM MDT	Winter Weather Advisory	MSO	Deer Lodge, Flathead, Granite, Lake, Mineral, Missoula and 4 more	30 hr
May 12, 10:35 AM MDT	Lake Wind Advisory	MSO	Flathead, Lake, Sanders	10 hr
May 12, 2:11 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	64 min
May 12, 2:56 PM MDT	Severe Thunderstorm Warning	BYZ	Carter	34 min
May 12, 3:40 PM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Phillips, Valley	28 hr
May 12, 4:01 PM MDT	High Wind Watch	BYZ	Carter, Fallon, Powder River	12 hr
May 12, 5:57 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Yellowstone	38 min
May 13, 3:56 AM MDT	High Wind Warning	BYZ	Carter, Fallon, Powder River	13 hr
May 13, 9:11 AM MDT	Winter Weather Advisory	GGW	Garfield, McCone, Petroleum, Phillips, Valley	3 hr
May 13, 2:38 PM MDT	Lake Wind Advisory	MSO	Flathead, Lake, Sanders	29 hr
May 14, 6:10 PM MDT	Severe Thunderstorm Warning	GGW	McCone, Roosevelt, Valley	48 min
May 18, 9:23 AM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Phillips, Valley	33 hr
May 18, 11:32 PM MDT	River Flood Watch	MSO	Ravalli	13 hr
May 19, 4:10 AM MDT	Wind Advisory	MSO	Deer Lodge, Granite, Missoula, Powell, Ravalli, Silver Bow	16 hr
May 19, 9:40 AM MDT	River Flood Watch	MSO	Ravalli	3 hr
May 19, 12:23 PM MDT	River Flood Warning	MSO	Ravalli	44 hr
May 19, 12:23 PM MDT	River Flood Warning	MSO	Ravalli	34 hr
May 19, 12:54 PM MDT	River Flood Watch	MSO	Missoula	32 hr
May 19, 2:39 PM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Phillips, Valley	29 hr
May 19, 4:10 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, Petroleum, Phillips	47 min
May 19, 8:53 PM MDT	Severe Thunderstorm Warning	GGW	Daniels, Roosevelt, Valley	67 min
May 19, 9:04 PM MDT	Severe Thunderstorm Warning	GGW	McCone, Richland, Roosevelt, Valley	56 min
May 19, 10:00 PM MDT	Severe Thunderstorm Warning	GGW	Roosevelt, Sheridan	30 min
May 20, 9:59 AM MDT	Areal Flood Advisory	TFX	Beaverhead, Broadwater, Cascade, Gallatin, Glacier, Jefferson and 5 more	29 hr
May 21, 2:04 PM MDT	River Flood Watch	TFX		51 hr
May 21, 2:45 PM MDT	Areal Flood Advisory	TFX	Beaverhead, Broadwater, Cascade, Gallatin, Glacier, Jefferson and 5 more	5 days
May 22, 9:21 PM MDT	River Flood Warning	TFX	Beaverhead, Madison	6 days
May 23, 2:01 PM MDT	River Flood Watch	MSO	Ravalli	26 hr
May 24, 3:45 PM MDT	River Flood Warning	MSO	Ravalli	42 hr
May 24, 4:07 PM MDT	River Flood Watch	MSO	Missoula	37 hr
May 24, 4:07 PM MDT	River Flood Watch	MSO	Ravalli	37 hr
May 24, 4:07 PM MDT	River Flood Watch	MSO	Missoula	37 hr
May 24, 5:59 PM MDT	Flash Flood Warning	BYZ	Park, Sweet Grass	6 hr
May 24, 8:23 PM MDT	Flash Flood Warning	BYZ	Rosebud	6 hr
May 25, 9:49 AM MDT	River Flood Warning	TFX	Gallatin	9 days
May 25, 10:53 AM MDT	Areal Flood Advisory	MSO	Deer Lodge	47 hr
May 26, 4:39 AM MDT	River Flood Warning	MSO	Missoula	14 hr
May 26, 10:32 AM MDT	River Flood Watch	BYZ	Park, Sweet Grass	24 hr
May 26, 10:32 AM MDT	River Flood Watch	BYZ	Carbon	4 days
May 26, 11:57 AM MDT	Areal Flood Advisory	TFX	Beaverhead, Broadwater, Gallatin, Glacier, Jefferson, Lewis and Clark and 3 more	6 days
May 27, 10:04 AM MDT	River Flood Warning	BYZ	Park, Sweet Grass	6 days
May 28, 9:30 AM MDT	Lake Wind Advisory	GGW	Garfield, McCone, Phillips, Valley	5 hr
May 29, 10:04 AM MDT	Areal Flood Advisory	MSO	Deer Lodge	47 hr
May 29, 10:17 AM MDT	River Flood Watch	MSO	Ravalli	46 hr
May 29, 10:17 AM MDT	River Flood Watch	MSO	Missoula	46 hr
May 29, 10:17 AM MDT	River Flood Watch	MSO	Ravalli	46 hr
May 29, 12:00 PM MDT	River Flood Warning	TFX	Beaverhead, Madison	5 days
May 30, 11:39 AM MDT	River Flood Warning	BYZ	Carbon	44 hr
May 30, 3:15 PM MDT	Severe Thunderstorm Warning	MSO	Flathead, Lake	30 min
May 31, 8:10 AM MDT	River Flood Warning	MSO	Ravalli	33 hr
May 31, 8:10 AM MDT	River Flood Warning	MSO	Missoula	52 hr
May 31, 9:37 AM MDT	Areal Flood Warning	MSO	Deer Lodge	48 hr
May 31, 3:36 PM MDT	River Flood Warning	MSO	Ravalli	26 hr

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	19
Mesoscale Discussion	1
Flooding
Areal Flood Warning	1
Flash Flood Warning	2
River Flood Warning	12
River Flood Watch	13
Areal Flood Advisory	6
Winter
Winter Weather Advisory	2
Wind and dust
High Wind Warning	1
High Wind Watch	1
Lake Wind Advisory	13
Wind Advisory	2

By county

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

8 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2008 2010

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.