Alert archive / Michigan / Saint Joseph County
Weather alerts in Saint Joseph County, Michigan, 2020
114 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Saint Joseph County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 114
- Warnings
- 24
- Watches
- 12
- Advisories
- 35
- Busiest month
- June20 alerts
- Busiest day
- June 10, 20207 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Saint Joseph County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 13 | 9 | 31% | 6 | 50% | 28 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Northern Indiana: tornado warnings | 4 | 1 | 75% | 3 | 33% | 18 min |
| NWS Northern Indiana: severe thunderstorm warnings | 110 | 71 | 35% | 336 | 72% | 24 min |
| NWS Northern Indiana: flash flood warnings | 2 | 0 | 100% | 2 | 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 8, 3:27 PM EST | Flood Watch | IWX | 72 hr |
| Jan 9, 1:54 PM EST | River Flood Warning | IWX | 11 days |
| Jan 9, 1:54 PM EST | River Flood Warning | IWX | 21 days |
| Jan 10, 11:52 AM EST | River Flood Warning | IWX | 21 days |
| Jan 11, 4:46 AM EST | Winter Weather Advisory | IWX | 23 hr |
| Jan 11, 6:12 AM EST | Areal Flood Warning | IWX | 6 hr |
| Jan 11, 10:28 AM EST | Areal Flood Warning | IWX | 2 hr |
| Jan 11, 8:25 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 12, 9:57 PM EST | Winter Weather Advisory | IWX | 7 hr |
| Jan 16, 2:54 PM EST | Winter Weather Advisory | IWX | 44 hr |
| Jan 18, 3:13 PM EST | Wind Advisory | IWX | 7 hr |
| Jan 19, 1:32 PM EST | Special Weather Statement | IWX | 58 min |
| Jan 20, 11:07 PM EST | River Flood Warning | IWX | 21 hr |
| Feb 5, 3:14 AM EST | Winter Weather Advisory | IWX | 31 hr |
| Feb 5, 6:07 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Feb 7, 3:26 PM EST | Special Weather Statement | IWX | 64 min |
| Feb 8, 6:16 PM EST | Special Weather Statement | IWX | 89 min |
| Feb 9, 3:14 AM EST | Winter Weather Advisory | IWX | 16 hr |
| Feb 11, 3:32 PM EST | Winter Weather Advisory | IWX | 63 hr |
| Feb 24, 2:45 PM EST | Winter Storm Watch | IWX | 25 hr |
| Feb 25, 3:37 PM EST | Winter Weather Advisory | IWX | 33 hr |
| Mar 27, 4:29 AM EDT | Dense Fog Advisory | IWX | 7 hr |
| Mar 28, 3:27 PM EDT | Wind Advisory | IWX | 29 hr |
| Mar 29, 3:04 AM EDT | Special Weather Statement | IWX | 116 min |
| Apr 7, 12:03 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 7, 4:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Apr 7, 6:59 PM EDT | Mesoscale Discussion | SPC | 91 min |
| Apr 7, 9:07 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 7, 10:08 PM EDT | Severe Thunderstorm Warning | IWX | 29 min |
| Apr 9, 4:04 AM EDT | Wind Advisory | IWX | 16 hr |
| Apr 11, 3:03 PM EDT | High Wind Watch | IWX | 24 hr |
| Apr 12, 3:16 PM EDT | Wind Advisory | IWX | 27 hr |
| Apr 16, 4:12 AM EDT | Winter Weather Advisory | IWX | 34 hr |
| Apr 20, 9:58 PM EDT | Special Weather Statement | IWX | 62 min |
| May 7, 3:31 AM EDT | Freeze Watch | IWX | 12 hr |
| May 7, 3:39 PM EDT | Freeze Warning | IWX | 42 hr |
| May 10, 12:55 PM EDT | Special Weather Statement | IWX | 50 min |
| May 10, 2:07 PM EDT | Special Weather Statement | IWX | 53 min |
| May 11, 3:53 AM EDT | Frost Advisory | IWX | 28 hr |
| May 12, 2:46 PM EDT | Frost Advisory | IWX | 18 hr |
| May 14, 11:30 AM EDT | Special Weather Statement | IWX | 30 min |
| May 14, 3:31 PM EDT | Flood Watch | IWX | 12 hr |
| May 15, 12:32 AM EDT | Special Weather Statement | IWX | 43 min |
| May 15, 12:54 AM EDT | Areal Flood Advisory | IWX | 3 hr |
| May 16, 2:58 PM EDT | Flood Watch | IWX | 53 hr |
| May 17, 11:30 AM EDT | River Flood Warning | IWX | 12 days |
| May 18, 8:57 AM EDT | Areal Flood Advisory | IWX | 6 hr |
| May 19, 10:58 AM EDT | River Flood Warning | IWX | 5 days |
| May 19, 10:58 AM EDT | River Flood Warning | IWX | 71 hr |
| May 26, 5:15 PM EDT | Special Weather Statement | IWX | 30 min |
| May 26, 6:05 PM EDT | Severe Thunderstorm Warning | IWX | 18 min |
| May 27, 2:55 PM EDT | Severe Thunderstorm Warning | IWX | 35 min |
| Jun 5, 1:26 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 9, 6:01 PM EDT | Special Weather Statement | IWX | 14 min |
| Jun 9, 7:43 PM EDT | Severe Thunderstorm Warning | IWX | 14 min |
| Jun 10, 9:44 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Jun 10, 11:54 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 10, 12:29 PM EDT | Special Weather Statement | IWX | 31 min |
| Jun 10, 12:40 PM EDT | Severe Thunderstorm Warning | IWX | 35 min |
| Jun 10, 12:56 PM EDT | Severe Thunderstorm Warning | IWX | 49 min |
| Jun 10, 1:08 PM EDT | Severe Thunderstorm Warning | IWX | 52 min |
| Jun 10, 1:41 PM EDT | Severe Thunderstorm Warning | IWX | 49 min |
| Jun 12, 9:12 PM EDT | Special Weather Statement | IWX | 48 min |
| Jun 21, 1:52 PM EDT | Special Weather Statement | IWX | 38 min |
| Jun 21, 4:04 PM EDT | Areal Flood Advisory | IWX | 2 hr |
| Jun 26, 7:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 26, 7:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 26, 9:05 PM EDT | Severe Thunderstorm Warning | IWX | 25 min |
| Jun 26, 9:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jun 26, 9:34 PM EDT | Severe Thunderstorm Warning | IWX | 41 min |
| Jun 26, 10:17 PM EDT | Special Weather Statement | IWX | 43 min |
| Jun 26, 10:26 PM EDT | Severe Thunderstorm Warning | IWX | 64 min |
| Jul 17, 3:25 PM EDT | Heat Advisory | IWX | 30 hr |
| Jul 19, 11:32 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 19, 1:19 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Aug 10, 3:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 10, 4:26 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 10, 6:17 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Aug 10, 6:24 PM EDT | Severe Thunderstorm Warning | IWX | 66 min |
| Aug 15, 4:59 PM EDT | Special Weather Statement | IWX | 31 min |
| Aug 25, 11:07 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 28, 1:32 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 28, 9:15 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 28, 11:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Aug 29, 12:39 AM EDT | Severe Thunderstorm Warning | IWX | 51 min |
| Sep 7, 2:06 AM EDT | Special Weather Statement | IWX | 39 min |
| Sep 10, 2:40 AM EDT | Dense Fog Advisory | IWX | 5 hr |
| Sep 18, 3:06 AM EDT | Frost Advisory | IWX | 30 hr |
| Sep 30, 2:56 PM EDT | Special Weather Statement | IWX | 49 min |
| Oct 2, 11:37 AM EDT | Frost Advisory | IWX | 20 hr |
| Oct 4, 4:17 AM EDT | Frost Advisory | IWX | 28 hr |
| Oct 5, 4:48 AM EDT | Dense Fog Advisory | IWX | 4 hr |
| Oct 12, 5:09 PM EDT | Special Weather Statement | IWX | 51 min |
| Oct 15, 3:57 AM EDT | Freeze Warning | IWX | 28 hr |
| Oct 16, 3:47 AM EDT | Frost Advisory | IWX | 28 hr |
| Oct 22, 4:19 AM EDT | Dense Fog Advisory | IWX | 9 hr |
| Oct 22, 5:04 AM EDT | Areal Flood Advisory | IWX | 3 hr |
| Oct 23, 1:01 PM EDT | Special Weather Statement | IWX | 29 min |
| Oct 23, 1:24 PM EDT | Special Weather Statement | IWX | 36 min |
| Oct 31, 3:52 AM EDT | Wind Advisory | IWX | 38 hr |
| Nov 10, 11:42 AM EST | Wind Advisory | IWX | 13 hr |
| Nov 10, 7:33 PM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Nov 10, 9:28 PM EST | Special Weather Statement | IWX | 47 min |
| Nov 10, 9:31 PM EST | Mesoscale Discussion | SPC | 89 min |
| Nov 10, 10:13 PM EST | Special Weather Statement | IWX | 47 min |
| Nov 14, 3:17 AM EST | Wind Advisory | IWX | 40 hr |
| Nov 15, 9:00 AM EST | Special Weather Statement | IWX | 30 min |
| Nov 18, 3:10 PM EST | Wind Advisory | IWX | 26 hr |
| Nov 25, 10:30 PM EST | Dense Fog Advisory | IWX | 3 hr |
| Dec 10, 1:25 AM EST | Freezing Fog Advisory | IWX | 9 hr |
| Dec 23, 2:36 PM EST | Winter Weather Advisory | IWX | 48 hr |
| Dec 29, 3:42 AM EST | Winter Weather Advisory | IWX | 29 hr |
| Dec 29, 8:50 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 30, 2:15 AM EST | Mesoscale Discussion | SPC | 6 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 | 13 |
| Severe Thunderstorm Watch | 6 |
| Mesoscale Discussion | 19 |
| Special Weather Statement | 24 |
| Flooding | |
| Areal Flood Warning | 2 |
| River Flood Warning | 7 |
| Flood Watch | 3 |
| Areal Flood Advisory | 4 |
| Winter | |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 10 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Frost Advisory | 6 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
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.