Alert archive / Michigan / Roscommon County
Weather alerts in Roscommon County, Michigan, 2019
64 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Roscommon County and its neighbors
Each county as a circle sized by its count in 2019. Tap one for its archive.
- Alerts
- 64
- Warnings
- 11
- Watches
- 7
- Advisories
- 32
- Busiest month
- January13 alerts
- Busiest day
- July 20, 20194 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Roscommon County, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 2 | 1 | 50% | 1 | 100% | 19 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2019
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Gaylord, MI: severe thunderstorm warnings | 27 | 14 | 48% | 39 | 72% | 23 min |
| NWS Gaylord, MI: flash flood warnings | 3 | 2 | 33% | 3 | 67% | 142 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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 4, 8:41 PM EST | Dense Fog Advisory | APX | 10 hr |
| Jan 6, 2:35 AM EST | Winter Weather Advisory | APX | 44 hr |
| Jan 14, 11:50 PM EST | Special Weather Statement | APX | 3 hr |
| Jan 15, 3:45 PM EST | Winter Weather Advisory | APX | 15 hr |
| Jan 19, 3:15 PM EST | Wind Chill Advisory | APX | 19 hr |
| Jan 20, 12:21 PM EST | Wind Chill Advisory | APX | 24 hr |
| Jan 22, 3:56 AM EST | Winter Weather Advisory | APX | 39 hr |
| Jan 23, 7:07 PM EST | Winter Weather Advisory | APX | 57 hr |
| Jan 26, 3:50 PM EST | Winter Storm Watch | APX | 12 hr |
| Jan 27, 3:51 AM EST | Winter Storm Warning | APX | 43 hr |
| Jan 28, 8:18 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 29, 2:37 AM EST | Wind Chill Warning | APX | 57 hr |
| Jan 31, 12:02 PM EST | Wind Chill Advisory | APX | 21 hr |
| Feb 2, 3:48 PM EST | Winter Weather Advisory | APX | 22 hr |
| Feb 3, 8:28 PM EST | Dense Fog Advisory | APX | 16 hr |
| Feb 5, 2:27 AM EST | Winter Weather Advisory | APX | 34 hr |
| Feb 6, 3:26 PM EST | Winter Weather Advisory | APX | 56 hr |
| Feb 7, 12:35 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Feb 10, 3:51 PM EST | Winter Storm Watch | APX | 23 hr |
| Feb 11, 2:23 PM EST | Winter Storm Warning | APX | 47 hr |
| Feb 19, 3:47 PM EST | Winter Weather Advisory | APX | 31 hr |
| Feb 22, 1:48 PM EST | Winter Storm Watch | APX | 26 hr |
| Feb 23, 3:23 PM EST | Blizzard Warning | APX | 39 hr |
| Feb 25, 6:52 AM EST | Winter Weather Advisory | APX | 14 hr |
| Feb 26, 2:25 PM EST | Winter Weather Advisory | APX | 22 hr |
| Mar 9, 2:38 AM EST | Winter Weather Advisory | APX | 38 hr |
| Mar 13, 11:29 AM EDT | Flood Watch | APX | 41 hr |
| Apr 4, 3:45 PM EDT | Winter Weather Advisory | APX | 20 hr |
| Apr 8, 8:09 AM EDT | Dense Fog Advisory | APX | 3 hr |
| Apr 13, 3:53 PM EDT | Winter Weather Advisory | APX | 36 hr |
| Apr 22, 10:01 AM EDT | Red Flag Warning | APX | 10 hr |
| Apr 26, 3:45 AM EDT | Wind Advisory | APX | 22 hr |
| May 7, 2:18 PM EDT | Freeze Warning | APX | 18 hr |
| May 10, 3:23 AM EDT | Freeze Warning | APX | 29 hr |
| May 11, 2:38 PM EDT | Frost Advisory | APX | 13 hr |
| May 20, 3:08 AM EDT | Frost Advisory | APX | 28 hr |
| May 30, 2:21 AM EDT | Frost Advisory | APX | 29 hr |
| Jun 2, 2:57 AM EDT | Frost Advisory | APX | 29 hr |
| Jul 4, 8:20 PM EDT | Special Weather Statement | APX | 55 min |
| Jul 4, 9:12 PM EDT | Special Weather Statement | APX | 63 min |
| Jul 10, 6:14 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 4:16 AM EDT | Heat Advisory | APX | 17 hr |
| Jul 19, 7:33 AM EDT | Severe Thunderstorm Warning | APX | 42 min |
| Jul 19, 10:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jul 19, 10:55 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 20, 1:50 AM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 20, 2:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 27, 1:03 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jul 27, 1:56 PM EDT | Special Weather Statement | APX | 34 min |
| Jul 27, 2:09 PM EDT | Severe Thunderstorm Warning | APX | 51 min |
| Jul 29, 2:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 29, 2:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Sep 3, 4:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Sep 16, 10:01 PM EDT | Dense Fog Advisory | APX | 13 hr |
| Sep 28, 3:15 AM EDT | Frost Advisory | APX | 27 hr |
| Oct 4, 3:06 AM EDT | Freeze Warning | APX | 29 hr |
| Oct 30, 3:44 PM EDT | Winter Weather Advisory | APX | 37 hr |
| Nov 6, 2:13 AM EST | Winter Weather Advisory | APX | 55 hr |
| Nov 29, 3:44 AM EST | Winter Storm Watch | APX | 32 hr |
| Nov 30, 3:31 AM EST | Winter Storm Warning | APX | 45 hr |
| Nov 30, 3:31 AM EST | Winter Weather Advisory | APX | 36 hr |
| Dec 1, 2:36 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 30, 12:03 AM EST | Wind Advisory | APX | 19 hr |
| Dec 30, 12:03 AM EST | Winter Weather Advisory | APX | 35 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 | 2 |
| Severe Thunderstorm Watch | 2 |
| Mesoscale Discussion | 10 |
| Special Weather Statement | 4 |
| Flooding | |
| Flood Watch | 1 |
| Winter | |
| Blizzard Warning | 1 |
| Winter Storm Warning | 3 |
| Winter Storm Watch | 4 |
| Winter Weather Advisory | 17 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 3 |
| Wind Chill Warning | 1 |
| Frost Advisory | 5 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 4 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20182020
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.