Alert archive / Michigan / Saginaw County
Weather alerts in Saginaw County, Michigan, 2012
86 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Saginaw County and its neighbors
Each county as a circle sized by its count in 2012. Tap one for its archive.
- Alerts
- 86
- Warnings
- 34
- Watches
- 11
- Advisories
- 23
- Busiest month
- July22 alerts
- Busiest day
- May 3, 20125 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Saginaw County, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 8 | 33% | 11 | 55% | 27 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2012
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Detroit, MI: tornado warnings | 11 | 6 | 45% | 7 | 71% | 13 min |
| NWS Detroit, MI: severe thunderstorm warnings | 112 | 69 | 38% | 198 | 81% | 28 min |
| NWS Detroit, MI: flash flood warnings | 6 | 0 | 100% | 0 |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 1, 3:21 AM EST | Wind Advisory | DTX | 18 hr |
| Jan 12, 8:04 PM EST | Winter Weather Advisory | DTX | 15 hr |
| Jan 17, 12:25 AM EST | Dense Fog Advisory | DTX | 8 hr |
| Jan 17, 3:37 AM EST | Winter Weather Advisory | DTX | 15 hr |
| Feb 22, 3:37 PM EST | Winter Storm Watch | DTX | 23 hr |
| Feb 23, 2:51 PM EST | Winter Storm Warning | DTX | 25 hr |
| Feb 23, 2:51 PM EST | Winter Weather Advisory | DTX | 25 hr |
| Feb 28, 4:30 PM EST | Winter Weather Advisory | DTX | 21 hr |
| Mar 2, 3:34 PM EST | Wind Advisory | DTX | 15 hr |
| Mar 12, 4:22 PM EDT | Tornado Watch | SPC | 7 hr |
| Mar 12, 6:29 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Mar 12, 7:44 PM EDT | Severe Thunderstorm Warning | DTX | 31 min |
| Mar 15, 3:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Mar 15, 4:26 PM EDT | Severe Thunderstorm Warning | DTX | 30 min |
| Mar 15, 4:28 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 15, 8:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Mar 25, 3:41 AM EDT | Freeze Watch | DTX | 12 hr |
| Mar 25, 4:02 PM EDT | Freeze Warning | DTX | 18 hr |
| Mar 26, 3:59 AM EDT | Freeze Watch | DTX | 6 hr |
| Mar 26, 10:26 AM EDT | Freeze Warning | DTX | 23 hr |
| Mar 29, 3:34 PM EDT | Freeze Warning | DTX | 16 hr |
| Mar 30, 3:28 PM EDT | Freeze Warning | DTX | 13 hr |
| Apr 5, 4:05 AM EDT | Freeze Watch | DTX | 11 hr |
| Apr 5, 2:57 PM EDT | Freeze Warning | DTX | 17 hr |
| Apr 6, 11:14 AM EDT | Freeze Warning | DTX | 21 hr |
| Apr 10, 3:49 PM EDT | Freeze Warning | DTX | 15 hr |
| Apr 11, 7:52 AM EDT | Freeze Warning | DTX | 24 hr |
| Apr 12, 3:04 PM EDT | Frost Advisory | DTX | 17 hr |
| Apr 16, 3:47 AM EDT | Wind Advisory | DTX | 16 hr |
| Apr 17, 1:32 PM EDT | Freeze Warning | DTX | 18 hr |
| Apr 26, 4:01 AM EDT | Freeze Warning | DTX | 28 hr |
| Apr 27, 3:47 PM EDT | Freeze Warning | DTX | 17 hr |
| Apr 28, 3:25 PM EDT | Freeze Warning | DTX | 18 hr |
| May 2, 2:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| May 3, 11:34 AM EDT | Mesoscale Discussion | SPC | 86 min |
| May 3, 2:35 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 3, 4:33 PM EDT | Mesoscale Discussion | SPC | 57 min |
| May 3, 5:10 PM EDT | Severe Thunderstorm Warning | DTX | 50 min |
| May 3, 6:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 4, 7:48 AM EDT | River Flood Warning | DTX | 15 hr |
| May 27, 10:21 AM EDT | Severe Thunderstorm Warning | DTX | 54 min |
| May 29, 1:46 AM EDT | Severe Thunderstorm Warning | DTX | 45 min |
| Jun 18, 10:14 AM EDT | Severe Thunderstorm Warning | DTX | 61 min |
| Jun 18, 10:33 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 22, 12:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 27, 3:27 PM EDT | Heat Advisory | DTX | 48 hr |
| Jul 3, 5:11 AM EDT | Severe Thunderstorm Warning | DTX | 64 min |
| Jul 4, 4:16 AM EDT | Excessive Heat Warning | DTX | 4 days |
| Jul 4, 4:16 AM EDT | Heat Advisory | DTX | 17 hr |
| Jul 4, 3:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Jul 4, 4:42 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 5, 2:57 AM EDT | Mesoscale Discussion | SPC | 63 min |
| Jul 5, 3:04 AM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 5, 3:16 AM EDT | Severe Thunderstorm Warning | DTX | 66 min |
| Jul 5, 3:43 AM EDT | Severe Thunderstorm Warning | DTX | 66 min |
| Jul 16, 3:49 AM EDT | Dense Fog Advisory | DTX | 4 hr |
| Jul 16, 4:13 PM EDT | Excessive Heat Watch | DTX | 12 hr |
| Jul 17, 3:46 AM EDT | Excessive Heat Warning | DTX | 16 hr |
| Jul 17, 5:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jul 25, 7:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 25, 9:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 25, 9:47 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 25, 11:55 PM EDT | Severe Thunderstorm Warning | DTX | 95 min |
| Jul 26, 12:09 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 26, 2:40 AM EDT | Mesoscale Discussion | SPC | 65 min |
| Jul 27, 3:26 PM EDT | Severe Thunderstorm Warning | DTX | 28 min |
| Jul 31, 1:39 AM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 31, 2:41 AM EDT | Severe Thunderstorm Warning | DTX | 64 min |
| Aug 10, 8:46 AM EDT | Areal Flood Advisory | DTX | 6 hr |
| Aug 10, 11:34 AM EDT | Areal Flood Warning | DTX | 15 hr |
| Aug 16, 6:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 20, 3:47 AM EDT | Dense Fog Advisory | DTX | 4 hr |
| Sep 18, 9:37 PM EDT | Frost Advisory | DTX | 10 hr |
| Sep 23, 2:42 PM EDT | Frost Advisory | DTX | 17 hr |
| Oct 6, 3:50 PM EDT | Freeze Warning | DTX | 16 hr |
| Oct 7, 3:41 PM EDT | Freeze Warning | DTX | 16 hr |
| Oct 10, 9:12 PM EDT | Freeze Warning | DTX | 12 hr |
| Oct 11, 3:16 PM EDT | Freeze Warning | DTX | 15 hr |
| Oct 12, 3:26 PM EDT | Freeze Warning | DTX | 13 hr |
| Oct 29, 4:02 AM EDT | Wind Advisory | DTX | 33 hr |
| Nov 16, 9:32 PM EST | Dense Fog Advisory | DTX | 12 hr |
| Nov 18, 12:33 AM EST | Dense Fog Advisory | DTX | 11 hr |
| Nov 18, 5:08 PM EST | Dense Fog Advisory | DTX | 17 hr |
| Dec 9, 6:40 PM EST | Freezing Rain Advisory | DTX | 7 hr |
| Dec 21, 3:34 AM EST | Winter Weather Advisory | DTX | 10 hr |
| Dec 21, 2:13 PM EST | Wind Advisory | DTX | 11 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 | 12 |
| Severe Thunderstorm Watch | 5 |
| Tornado Watch | 1 |
| Mesoscale Discussion | 18 |
| Flooding | |
| Areal Flood Warning | 1 |
| River Flood Warning | 1 |
| Areal Flood Advisory | 1 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 5 |
| Heat | |
| Excessive Heat Warning | 2 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 17 |
| Freeze Watch | 3 |
| Frost Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20112013
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.