Alert archive / Michigan / Alger County

Weather alerts in Alger County, Michigan, 2008

100 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Alger County and its neighbors

Each county as a circle sized by its count in 2008. Tap one for its archive.

Alerts
100
Warnings
29
Watches
17
Advisories
34
Busiest month
January18 alerts
Busiest day
January 30, 20083 alerts

Over time

By month

Warning verification

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

Alger County, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings6183%1100%4 min
Flash flood warnings00

Each office's whole area, 2008

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Marquette, MI: tornado warnings20100%10%
NWS Marquette, MI: severe thunderstorm warnings541965%3379%23 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, 4:34 AM ESTWind AdvisoryMQT14 hr
Jan 6, 6:56 AM ESTDense Fog AdvisoryMQT21 hr
Jan 8, 4:18 AM ESTDense Fog AdvisoryMQT8 hr
Jan 13, 4:50 AM ESTLake Effect Snow WarningMQT38 hr
Jan 16, 4:39 AM ESTWinter Storm WatchMQT12 hr
Jan 16, 4:11 PM ESTHeavy Snow WarningMQT37 hr
Jan 17, 4:33 PM ESTLake Effect Snow AdvisoryMQT3 days
Jan 18, 5:29 AM ESTLake Effect Snow WarningMQT62 hr
Jan 18, 4:37 PM ESTLake Effect Snow and Blowing Snow AdvisoryMQT72 hr
Jan 21, 4:30 PM ESTLake Effect Snow WatchMQT12 hr
Jan 22, 4:54 AM ESTLake Effect Snow WarningMQT40 hr
Jan 28, 4:39 AM ESTWinter Storm WatchMQT12 hr
Jan 28, 4:42 PM ESTBlizzard WatchMQT13 hr
Jan 29, 5:43 AM ESTBlizzard WarningMQT39 hr
Jan 29, 7:15 PM ESTMesoscale DiscussionSPC4 hr
Jan 30, 4:58 AM ESTLake Effect Snow and Blowing Snow AdvisoryMQT30 hr
Jan 30, 4:09 PM ESTWind Chill AdvisoryMQT12 hr
Jan 31, 4:46 AM ESTWind Chill AdvisoryMQT3 hr
Feb 3, 3:48 PM ESTSnow AdvisoryMQT30 hr
Feb 8, 4:49 AM ESTBlizzard WatchMQT24 hr
Feb 9, 4:48 AM ESTBlizzard WarningMQT44 hr
Feb 9, 10:13 AM ESTLakeshore Flood StatementMQT43 hr
Feb 10, 4:36 AM ESTHigh Wind WarningMQT13 hr
Feb 10, 10:28 PM ESTLake Effect Snow and Blowing Snow AdvisoryMQT6 hr
Feb 13, 3:52 PM ESTSnow AdvisoryMQT24 hr
Feb 15, 3:48 PM ESTWinter Storm WatchMQT24 hr
Feb 16, 4:16 PM ESTWinter Storm WarningMQT48 hr
Feb 18, 4:39 PM ESTLake Effect Snow AdvisoryMQT43 hr
Feb 26, 4:31 AM ESTLake Effect Snow AdvisoryMQT50 hr
Mar 1, 1:05 AM ESTLake Effect Snow AdvisoryMQT3 hr
Mar 1, 4:24 AM ESTLake Effect Snow WarningMQT7 hr
Mar 18, 8:46 AM EDTSnow AdvisoryMQT5 hr
Mar 24, 3:44 PM EDTSnow AdvisoryMQT19 hr
Mar 29, 4:19 PM EDTWinter Storm WatchMQT24 hr
Mar 30, 4:41 PM EDTWinter Storm WarningMQT47 hr
Mar 31, 12:45 PM EDTBlizzard WarningMQT27 hr
Mar 31, 5:18 PM EDTLakeshore Flood StatementMQT27 hr
Apr 8, 6:17 AM EDTHeavy Snow WarningMQT28 hr
Apr 8, 12:00 PM EDTSnow AdvisoryMQT20 hr
Apr 8, 12:00 PM EDTWinter Weather AdvisoryMQT4 hr
Apr 9, 4:24 PM EDTWinter Storm WatchMQT13 hr
Apr 10, 5:18 AM EDTWinter Storm WarningMQT54 hr
May 18, 3:54 AM EDTFrost AdvisoryMQT27 hr
May 26, 3:26 PM EDTFreeze WatchMQT25 hr
May 27, 4:01 PM EDTFreeze WarningMQT16 hr
Jun 6, 4:19 AM EDTWind AdvisoryMQT16 hr
Jun 10, 12:51 PM EDTSevere Thunderstorm WarningMQT39 min
Jun 14, 5:01 PM EDTSevere Thunderstorm WarningMQT29 min
Jun 15, 1:38 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 15, 2:18 PM EDTSevere Thunderstorm WarningMQT42 min
Jun 28, 3:23 PM EDTSevere Thunderstorm WarningMQT52 min
Jun 28, 4:24 PM EDTAreal Flood AdvisoryMQT2 hr
Jul 9, 10:53 AM EDTLakeshore Flood StatementMQT9 hr
Jul 13, 5:22 AM EDTLakeshore Flood StatementMQT18 hr
Jul 19, 7:31 AM EDTDense Fog AdvisoryMQT4 hr
Jul 21, 4:43 AM EDTLakeshore Flood StatementMQT11 hr
Jul 25, 2:19 PM EDTSevere Thunderstorm WatchSPC8 hr
Jul 25, 4:38 PM EDTMesoscale DiscussionSPC97 min
Aug 1, 1:53 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 1, 3:41 PM EDTSevere Thunderstorm WarningMQT49 min
Aug 1, 4:48 PM EDTMesoscale DiscussionSPC87 min
Aug 7, 4:04 AM EDTLakeshore Flood StatementMQT26 hr
Aug 8, 3:59 PM EDTLakeshore Flood StatementMQT52 hr
Aug 18, 5:42 AM EDTLakeshore Flood StatementMQT24 hr
Aug 23, 5:46 AM EDTLakeshore Flood StatementMQT42 hr
Sep 2, 5:30 AM EDTLakeshore Flood StatementMQT47 hr
Sep 4, 5:28 AM EDTLakeshore Flood StatementMQT22 hr
Sep 7, 5:50 AM EDTLakeshore Flood StatementMQT35 hr
Sep 7, 6:49 PM EDTSevere Thunderstorm WarningMQT56 min
Sep 13, 5:51 AM EDTLakeshore Flood StatementMQT58 hr
Sep 16, 5:38 AM EDTLakeshore Flood StatementMQT41 hr
Sep 17, 4:52 AM EDTFrost AdvisoryMQT27 hr
Sep 19, 5:55 AM EDTLakeshore Flood StatementMQT40 hr
Sep 20, 4:42 AM EDTFrost AdvisoryMQT28 hr
Sep 26, 5:08 PM EDTLakeshore Flood StatementMQT50 hr
Sep 29, 5:08 AM EDTLakeshore Flood StatementMQT63 hr
Nov 3, 6:41 PM ESTDense Fog AdvisoryMQT12 hr
Nov 8, 5:04 AM ESTWinter Weather AdvisoryMQT41 hr
Nov 9, 10:15 PM ESTLake Effect Snow WarningMQT14 hr
Nov 15, 4:33 PM ESTLake Effect Snow WatchMQT12 hr
Nov 15, 4:33 PM ESTLake Effect Snow WarningMQT65 hr
Nov 18, 4:20 PM ESTLake Effect Snow WatchMQT19 hr
Nov 18, 4:20 PM ESTLake Effect Snow WarningMQT3 days
Nov 30, 8:16 PM ESTWinter Weather AdvisoryMQT20 hr
Dec 2, 4:04 PM ESTLake Effect Snow WatchMQT20 hr
Dec 3, 11:52 AM ESTLake Effect Snow WarningMQT49 hr
Dec 4, 4:04 PM ESTWinter Storm WatchMQT25 hr
Dec 5, 4:36 PM ESTBlizzard WarningMQT30 hr
Dec 5, 4:36 PM ESTWinter Storm WarningMQT40 hr
Dec 9, 9:03 PM ESTLake Effect Snow AdvisoryMQT14 hr
Dec 11, 4:54 AM ESTLake Effect Snow AdvisoryMQT30 hr
Dec 13, 6:42 AM ESTWinter Weather AdvisoryMQT66 hr
Dec 19, 6:09 AM ESTLake Effect Snow WarningMQT23 hr
Dec 20, 5:47 AM ESTWinter Storm WarningMQT49 hr
Dec 24, 3:54 PM ESTWinter Weather AdvisoryMQT12 hr
Dec 25, 4:58 AM ESTWinter Weather AdvisoryMQT28 hr
Dec 26, 4:31 PM ESTWinter Storm WatchMQT24 hr
Dec 27, 4:16 PM ESTWinter Weather AdvisoryMQT18 hr
Dec 27, 10:18 PM ESTWinter Storm WarningMQT15 hr
Dec 29, 10:52 AM ESTWinter Weather AdvisoryMQT13 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 archive20072009

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.