Alert archive / Michigan / Branch County

Weather alerts in Branch County, Michigan, 2009

106 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Branch County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts
106
Warnings
20
Watches
26
Advisories
34
Busiest month
June19 alerts
Busiest day
June 19, 20098 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Branch County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings220%333%3 min
Flash flood warnings00

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Northern Indiana: tornado warnings12375%7100%22 min
NWS Northern Indiana: severe thunderstorm warnings592558%9077%26 min
NWS Northern Indiana: flash flood warnings15380%786%100 min

An office's figures cover every county it serves, including across state lines.

Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.

The alerts

Every alert, in the order issued. Times are local, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 3, 4:55 AM ESTFreezing Rain AdvisoryIWX26 hr
Jan 4, 7:11 AM ESTFreezing Rain AdvisoryIWX109 min
Jan 6, 4:58 AM ESTWinter Weather AdvisoryIWX28 hr
Jan 8, 3:27 PM ESTWinter Storm WatchIWX13 hr
Jan 9, 4:47 AM ESTWinter Storm WarningIWX38 hr
Jan 10, 6:33 AM ESTMesoscale DiscussionSPC5 hr
Jan 11, 3:47 PM ESTWinter Storm WatchIWX24 hr
Jan 12, 4:01 PM ESTBlizzard WatchIWX23 hr
Jan 12, 4:01 PM ESTWinter Storm WarningIWX23 hr
Jan 14, 5:22 AM ESTWind Chill WarningIWX55 hr
Jan 16, 12:05 PM ESTWind Chill AdvisoryIWX7 hr
Jan 16, 7:26 PM ESTWind Chill WarningIWX12 hr
Feb 4, 4:38 AM ESTWind Chill AdvisoryIWX7 hr
Feb 10, 4:40 AM ESTFlood WatchIWX44 hr
Feb 10, 4:41 AM ESTHigh Wind WatchIWX11 hr
Feb 10, 3:35 PM ESTHigh Wind WarningIWX37 hr
Feb 12, 4:06 AM ESTWind AdvisoryIWX14 hr
Feb 12, 10:39 AM ESTRiver Flood WarningIWX5 days
Feb 19, 4:05 PM ESTWinter Storm WatchIWX24 hr
Feb 20, 3:48 PM ESTWinter Storm WarningIWX13 hr
Feb 20, 3:48 PM ESTWinter Weather AdvisoryIWX24 hr
Feb 21, 6:35 AM ESTMesoscale DiscussionSPC5 hr
Feb 21, 3:35 PM ESTLake Effect Snow AdvisoryIWX45 hr
Feb 26, 4:04 AM ESTDense Fog AdvisoryIWX8 hr
Feb 26, 4:04 AM ESTFreezing Fog AdvisoryIWX6 hr
Mar 1, 12:00 PM ESTFlood WatchIWX22 hr
Mar 1, 9:45 PM ESTRiver Flood WarningIWX36 hr
Mar 6, 2:39 PM ESTFlood WatchIWX52 hr
Mar 8, 5:13 AM EDTWind AdvisoryIWX12 hr
Mar 8, 7:43 AM EDTAreal Flood AdvisoryIWX6 hr
Mar 8, 11:48 AM EDTRiver Flood WarningIWX13 days
Mar 8, 5:25 PM EDTHigh Wind WarningIWX7 hr
Mar 9, 4:21 AM EDTFlash Flood WatchIWX45 hr
Mar 10, 4:23 AM EDTWind AdvisoryIWX30 hr
Apr 2, 11:27 AM EDTRiver Flood WatchIWX49 hr
Apr 2, 9:02 PM EDTMesoscale DiscussionSPC118 min
Apr 5, 11:18 AM EDTRiver Flood WatchIWX48 hr
Apr 5, 3:29 PM EDTWinter Weather AdvisoryIWX18 hr
Apr 6, 2:04 AM EDTMesoscale DiscussionSPC4 hr
Apr 7, 10:58 AM EDTRiver Flood WarningIWX6 hr
Apr 7, 9:57 PM EDTRiver Flood WarningIWX6 days
Apr 17, 9:24 PM EDTRiver Flood WarningIWX24 hr
Apr 25, 2:55 PM EDTMesoscale DiscussionSPC95 min
Apr 25, 3:39 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 25, 7:15 PM EDTMesoscale DiscussionSPC60 min
Apr 27, 4:26 AM EDTWind AdvisoryIWX11 hr
Apr 30, 11:37 AM EDTRiver Flood WatchIWX23 hr
May 9, 3:56 AM EDTWind AdvisoryIWX13 hr
May 9, 3:56 PM EDTFrost AdvisoryIWX12 hr
May 10, 4:04 AM EDTFrost AdvisoryIWX28 hr
May 11, 1:09 PM EDTFrost AdvisoryIWX19 hr
May 13, 11:17 PM EDTMesoscale DiscussionSPC58 min
May 13, 11:51 PM EDTSevere Thunderstorm WatchSPC4 hr
May 15, 4:17 PM EDTFlood WatchIWX12 hr
May 16, 12:43 AM EDTAreal Flood AdvisoryIWX6 hr
May 17, 3:51 AM EDTFrost AdvisoryIWX28 hr
May 17, 3:59 PM EDTFreeze WarningIWX16 hr
May 19, 8:38 PM EDTRiver Flood WarningIWX38 hr
Jun 1, 6:42 AM EDTSpecial Weather StatementIWX63 min
Jun 1, 3:37 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 8, 3:34 PM EDTMesoscale DiscussionSPC56 min
Jun 8, 6:11 PM EDTSpecial Weather StatementIWX34 min
Jun 8, 6:46 PM EDTMesoscale DiscussionSPC59 min
Jun 8, 8:24 PM EDTSevere Thunderstorm WarningIWX66 min
Jun 8, 9:03 PM EDTSpecial Weather StatementIWX27 min
Jun 19, 12:30 AM EDTSevere Thunderstorm WatchSPC7 hr
Jun 19, 3:38 AM EDTMesoscale DiscussionSPC97 min
Jun 19, 4:57 AM EDTSevere Thunderstorm WarningIWX52 min
Jun 19, 7:37 AM EDTMesoscale DiscussionSPC83 min
Jun 19, 9:49 AM EDTFlash Flood WatchIWX14 hr
Jun 19, 11:50 AM EDTTornado WatchSPC7 hr
Jun 19, 2:37 PM EDTMesoscale DiscussionSPC83 min
Jun 19, 6:59 PM EDTTornado WatchSPC8 hr
Jun 19, 9:34 PM EDTMesoscale DiscussionSPC86 min
Jun 25, 1:30 PM EDTMesoscale DiscussionSPC60 min
Jun 25, 2:08 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 25, 4:12 PM EDTMesoscale DiscussionSPC63 min
Jul 5, 2:27 AM EDTDense Fog AdvisoryIWX7 hr
Jul 11, 3:31 AM EDTMesoscale DiscussionSPC29 min
Jul 28, 4:51 PM EDTSpecial Weather StatementIWX54 min
Aug 8, 12:39 PM EDTSpecial Weather StatementIWX66 min
Aug 9, 3:40 AM EDTHeat AdvisoryIWX16 hr
Aug 9, 5:18 PM EDTMesoscale DiscussionSPC57 min
Aug 9, 5:48 PM EDTSevere Thunderstorm WatchSPC4 hr
Aug 9, 7:42 PM EDTSpecial Weather StatementIWX48 min
Aug 17, 6:16 PM EDTSpecial Weather StatementIWX59 min
Aug 19, 6:11 PM EDTTornado WatchSPC5 hr
Aug 20, 8:32 AM EDTSpecial Weather StatementIWX28 min
Sep 9, 9:16 PM EDTDense Fog AdvisoryIWX12 hr
Sep 27, 11:04 AM EDTWind AdvisoryIWX35 hr
Sep 27, 10:14 PM EDTMesoscale DiscussionSPC2 hr
Sep 27, 10:46 PM EDTSevere Thunderstorm WatchSPC4 hr
Sep 30, 4:07 AM EDTFrost AdvisoryIWX29 hr
Sep 30, 3:18 PM EDTFreeze WarningIWX18 hr
Oct 6, 3:33 PM EDTWind AdvisoryIWX19 hr
Oct 10, 4:19 AM EDTFreeze WarningIWX29 hr
Dec 7, 3:34 PM ESTHigh Wind WatchIWX22 hr
Dec 8, 4:57 AM ESTWinter Weather AdvisoryIWX9 hr
Dec 8, 1:32 PM ESTWind AdvisoryIWX9 hr
Dec 8, 6:40 PM ESTWinter Weather AdvisoryIWX6 hr
Dec 8, 10:24 PM ESTHigh Wind WarningIWX20 hr
Dec 13, 12:18 AM ESTWinter Weather AdvisoryIWX9 hr
Dec 22, 4:32 PM ESTWinter Storm WatchIWX35 hr
Dec 24, 4:01 AM ESTWinter Weather AdvisoryIWX9 hr
Dec 24, 1:08 PM ESTFreezing Rain AdvisoryIWX9 hr
Dec 27, 4:11 AM ESTWinter Weather AdvisoryIWX15 hr

By product

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

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20082010

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.