Weather alerts in Michigan, 2009

1,896 weather alerts in 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 2009. Tap one for its archive.

Alerts: 1,896
Warnings: 630
Watches: 180
Advisories: 834
Busiest month: June216 alerts
Busiest day: April 25, 200963 alerts

Over time

By month

The alerts

1,896 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.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	130
Tornado Warning	11
Severe Thunderstorm Watch	11
Tornado Watch	4
Mesoscale Discussion	53
Special Weather Statement	144
Flooding
Areal Flood Warning	13
Flash Flood Warning	11
River Flood Warning	114
Flash Flood Watch	5
Flood Watch	17
River Flood Watch	9
Areal Flood Advisory	30
River Flood Advisory	109
Winter
Blizzard Warning	4
Ice Storm Warning	1
Lake Effect Snow Warning	20
Winter Storm Warning	39
Blizzard Watch	1
Lake Effect Snow Watch	9
Winter Storm Watch	33
Freezing Rain Advisory	9
Lake Effect Snow Advisory	43
Winter Weather Advisory	107
Heat
Heat Advisory	4
Cold
Freeze Warning	25
Wind Chill Warning	5
Freeze Watch	4
Wind Chill Watch	2
Frost Advisory	38
Wind Chill Advisory	14
Wind and dust
High Wind Warning	15
High Wind Watch	8
Wind Advisory	45
Fire
Red Flag Warning	8
Fire Weather Watch	6
Fog and smoke
Dense Fog Advisory	23
Freezing Fog Advisory	1
Coast and beach
Coastal Flood Warning	1
Lakeshore Flood Warning	1
Lakeshore Flood Advisory	1
Lakeshore Flood Statement	53
Marine
Gale Warning	111
Heavy Freezing Spray Warning	26
Special Marine Warning	86
Storm Warning	9
Gale Watch	62
Heavy Freezing Spray Watch	7
Storm Watch	2
Brisk Wind Advisory	21
Low Water Advisory	9
Marine Dense Fog Advisory	10
Small Craft Advisory	370
Marine Weather Statement	2

By county

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

43 more counties

The busiest days

Days with the most alerts issued, by UTC date.

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. Rebuilt daily.