Alert archive / New York / Rensselaer County
Weather alerts in Rensselaer County, New York, 2021
225 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Rensselaer County and its neighbors
Each county as a circle sized by its count in 2021. Tap one for its archive.
- Alerts
- 225
- Warnings
- 60
- Watches
- 21
- Advisories
- 63
- Busiest month
- July66 alerts
- Busiest day
- September 15, 202116 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Rensselaer County, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 44 | 36 | 18% | 24 | 88% | 19 min |
| Flash flood warnings | 5 | 4 | 20% | 10 | 90% | 48 min |
Each office's whole area, 2021
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Albany, NY: tornado warnings | 4 | 1 | 75% | 4 | 25% | 2 min |
| NWS Albany, NY: severe thunderstorm warnings | 187 | 147 | 21% | 486 | 83% | 20 min |
| NWS Albany, NY: flash flood warnings | 38 | 24 | 37% | 108 | 86% | 92 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 1, 9:33 PM EST | Special Weather Statement | ALY | 57 min |
| Jan 2, 6:59 AM EST | Winter Weather Advisory | ALY | 3 hr |
| Jan 2, 3:40 PM EST | Winter Weather Advisory | ALY | 38 hr |
| Jan 3, 9:22 PM EST | Special Weather Statement | ALY | 68 min |
| Jan 16, 6:08 PM EST | Special Weather Statement | ALY | 37 min |
| Jan 20, 11:40 AM EST | Special Weather Statement | ALY | 50 min |
| Jan 20, 12:20 PM EST | Special Weather Statement | ALY | 40 min |
| Jan 25, 3:26 PM EST | Winter Weather Advisory | ALY | 43 hr |
| Jan 28, 3:38 AM EST | Wind Chill Advisory | ALY | 32 hr |
| Jan 29, 12:47 PM EST | Wind Chill Advisory | ALY | 21 hr |
| Jan 30, 3:34 PM EST | Winter Storm Watch | ALY | 36 hr |
| Jan 31, 4:11 PM EST | Winter Storm Warning | ALY | 50 hr |
| Jan 31, 4:11 PM EST | Winter Weather Advisory | ALY | 53 hr |
| Feb 13, 3:40 PM EST | Winter Storm Watch | ALY | 37 hr |
| Feb 15, 4:43 AM EST | Winter Weather Advisory | ALY | 29 hr |
| Feb 16, 2:51 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 28, 3:11 PM EST | Wind Advisory | ALY | 46 hr |
| Mar 1, 2:58 AM EST | High Wind Warning | ALY | 25 hr |
| Mar 1, 7:28 PM EST | Special Weather Statement | ALY | 47 min |
| Mar 1, 8:12 PM EST | Special Weather Statement | ALY | 48 min |
| Mar 12, 3:27 AM EST | Wind Advisory | ALY | 27 hr |
| Mar 13, 3:46 PM EST | Wind Advisory | ALY | 29 hr |
| Mar 25, 3:36 PM EDT | Wind Advisory | ALY | 32 hr |
| Mar 28, 3:56 AM EDT | Wind Advisory | ALY | 35 hr |
| Mar 28, 3:24 PM EDT | High Wind Warning | ALY | 18 hr |
| Apr 15, 4:03 AM EDT | Winter Weather Advisory | ALY | 40 hr |
| Apr 21, 11:49 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 29, 3:35 PM EDT | Wind Advisory | ALY | 34 hr |
| Apr 30, 3:45 AM EDT | High Wind Warning | ALY | 11 hr |
| May 12, 3:27 AM EDT | Frost Advisory | ALY | 29 hr |
| May 26, 12:16 PM EDT | Mesoscale Discussion | SPC | 119 min |
| May 26, 12:59 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 26, 4:11 PM EDT | Special Weather Statement | ALY | 34 min |
| May 26, 4:23 PM EDT | Severe Thunderstorm Warning | ALY | 37 min |
| May 26, 4:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 6, 3:33 PM EDT | Heat Advisory | ALY | 26 hr |
| Jun 8, 3:55 PM EDT | Areal Flood Advisory | ALY | 84 min |
| Jun 14, 8:07 AM EDT | Special Weather Statement | ALY | 38 min |
| Jun 14, 9:10 AM EDT | Special Weather Statement | ALY | 50 min |
| Jun 15, 4:31 AM EDT | Dense Fog Advisory | ALY | 102 min |
| Jun 20, 3:31 PM EDT | Heat Advisory | ALY | 26 hr |
| Jun 21, 12:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jun 21, 3:45 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 6:50 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jun 21, 9:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 21, 9:34 PM EDT | Special Weather Statement | ALY | 26 min |
| Jun 21, 9:44 PM EDT | Severe Thunderstorm Warning | ALY | 61 min |
| Jun 26, 3:20 PM EDT | Heat Advisory | ALY | 28 hr |
| Jun 27, 2:54 PM EDT | Heat Advisory | ALY | 29 hr |
| Jun 28, 2:19 PM EDT | Heat Advisory | ALY | 30 hr |
| Jun 28, 2:57 PM EDT | Special Weather Statement | ALY | 33 min |
| Jun 28, 3:50 PM EDT | Special Weather Statement | ALY | 25 min |
| Jun 28, 4:30 PM EDT | Special Weather Statement | ALY | 30 min |
| Jun 28, 6:38 PM EDT | Special Weather Statement | ALY | 52 min |
| Jun 29, 3:52 PM EDT | Heat Advisory | ALY | 27 hr |
| Jun 29, 4:20 PM EDT | Special Weather Statement | ALY | 40 min |
| Jun 29, 4:42 PM EDT | Severe Thunderstorm Warning | ALY | 63 min |
| Jun 29, 5:07 PM EDT | Special Weather Statement | ALY | 38 min |
| Jun 29, 5:15 PM EDT | Severe Thunderstorm Warning | ALY | 60 min |
| Jun 29, 7:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 29, 7:45 PM EDT | Severe Thunderstorm Warning | ALY | 60 min |
| Jun 29, 7:47 PM EDT | Special Weather Statement | ALY | 28 min |
| Jun 30, 11:04 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 30, 11:47 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 2:54 PM EDT | Severe Thunderstorm Warning | ALY | 36 min |
| Jun 30, 3:00 PM EDT | Special Weather Statement | ALY | 30 min |
| Jun 30, 3:24 PM EDT | Severe Thunderstorm Warning | ALY | 30 min |
| Jun 30, 3:25 PM EDT | Areal Flood Advisory | ALY | 44 min |
| Jun 30, 3:31 PM EDT | Special Weather Statement | ALY | 29 min |
| Jun 30, 3:35 PM EDT | Areal Flood Advisory | ALY | 55 min |
| Jun 30, 4:01 PM EDT | Severe Thunderstorm Warning | ALY | 27 min |
| Jul 6, 1:12 AM EDT | Special Weather Statement | ALY | 33 min |
| Jul 6, 12:33 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 6, 1:31 PM EDT | Special Weather Statement | ALY | 44 min |
| Jul 6, 2:13 PM EDT | Special Weather Statement | ALY | 47 min |
| Jul 6, 3:23 PM EDT | Severe Thunderstorm Warning | ALY | 37 min |
| Jul 6, 4:23 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jul 7, 1:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 7, 2:41 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 7, 2:58 PM EDT | Severe Thunderstorm Warning | ALY | 32 min |
| Jul 7, 3:29 PM EDT | Special Weather Statement | ALY | 31 min |
| Jul 7, 4:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 7, 6:06 PM EDT | Severe Thunderstorm Warning | ALY | 39 min |
| Jul 7, 6:46 PM EDT | Special Weather Statement | ALY | 59 min |
| Jul 7, 6:48 PM EDT | Severe Thunderstorm Warning | ALY | 27 min |
| Jul 8, 12:00 AM EDT | Severe Thunderstorm Warning | ALY | 60 min |
| Jul 8, 12:34 AM EDT | Special Weather Statement | ALY | 41 min |
| Jul 11, 3:52 AM EDT | Flash Flood Watch | ALY | 45 hr |
| Jul 11, 9:33 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 11, 11:01 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 12, 12:40 AM EDT | Areal Flood Advisory | ALY | 4 hr |
| Jul 14, 2:32 PM EDT | Special Weather Statement | ALY | 43 min |
| Jul 14, 2:47 PM EDT | Special Weather Statement | ALY | 43 min |
| Jul 14, 2:58 PM EDT | Severe Thunderstorm Warning | ALY | 62 min |
| Jul 14, 3:09 PM EDT | Severe Thunderstorm Warning | ALY | 66 min |
| Jul 14, 3:22 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 14, 3:44 PM EDT | Flash Flood Warning | ALY | 2 hr |
| Jul 14, 3:53 PM EDT | Severe Thunderstorm Warning | ALY | 52 min |
| Jul 14, 4:14 PM EDT | Flash Flood Warning | ALY | 3 hr |
| Jul 14, 4:15 PM EDT | Severe Thunderstorm Warning | ALY | 28 min |
| Jul 14, 4:49 PM EDT | Flash Flood Warning | ALY | 3 hr |
| Jul 14, 4:51 PM EDT | Special Weather Statement | ALY | 24 min |
| Jul 14, 5:54 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 14, 6:12 PM EDT | Areal Flood Warning | ALY | 3 hr |
| Jul 14, 6:47 PM EDT | Areal Flood Warning | ALY | 3 hr |
| Jul 14, 7:57 PM EDT | Areal Flood Warning | ALY | 3 hr |
| Jul 14, 9:15 PM EDT | Areal Flood Warning | ALY | 11 hr |
| Jul 16, 3:16 PM EDT | Flash Flood Watch | ALY | 55 hr |
| Jul 17, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 17, 6:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 9:23 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 17, 10:35 PM EDT | Areal Flood Advisory | ALY | 115 min |
| Jul 20, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 20, 3:10 PM EDT | Special Weather Statement | ALY | 35 min |
| Jul 20, 7:12 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 8:49 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 20, 8:54 PM EDT | Severe Thunderstorm Warning | ALY | 36 min |
| Jul 20, 9:12 PM EDT | Special Weather Statement | ALY | 33 min |
| Jul 20, 9:24 PM EDT | Severe Thunderstorm Warning | ALY | 51 min |
| Jul 20, 9:38 PM EDT | Severe Thunderstorm Warning | ALY | 52 min |
| Jul 20, 9:46 PM EDT | Severe Thunderstorm Warning | ALY | 59 min |
| Jul 20, 10:01 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 25, 6:46 PM EDT | Special Weather Statement | ALY | 29 min |
| Jul 26, 6:02 AM EDT | Dense Fog Advisory | ALY | 3 hr |
| Jul 27, 2:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Jul 27, 2:47 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 27, 3:40 PM EDT | Special Weather Statement | ALY | 35 min |
| Jul 27, 3:59 PM EDT | Severe Thunderstorm Warning | ALY | 46 min |
| Jul 27, 4:30 PM EDT | Severe Thunderstorm Warning | ALY | 43 min |
| Jul 27, 4:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jul 27, 4:54 PM EDT | Special Weather Statement | ALY | 36 min |
| Jul 27, 6:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 29, 7:41 PM EDT | Severe Thunderstorm Warning | ALY | 64 min |
| Jul 29, 8:03 PM EDT | Severe Thunderstorm Warning | ALY | 57 min |
| Jul 29, 8:48 PM EDT | Flash Flood Warning | ALY | 117 min |
| Jul 29, 9:10 PM EDT | Severe Thunderstorm Warning | ALY | 45 min |
| Aug 1, 3:18 AM EDT | Flash Flood Watch | ALY | 19 hr |
| Aug 7, 3:15 PM EDT | Special Weather Statement | ALY | 45 min |
| Aug 7, 4:03 PM EDT | Special Weather Statement | ALY | 42 min |
| Aug 10, 3:30 AM EDT | Excessive Heat Watch | ALY | 37 hr |
| Aug 10, 3:30 AM EDT | Heat Advisory | ALY | 41 hr |
| Aug 11, 4:00 PM EDT | Excessive Heat Warning | ALY | 28 hr |
| Aug 11, 4:00 PM EDT | Heat Advisory | ALY | 28 hr |
| Aug 11, 4:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 12, 11:03 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 1:42 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 12, 2:42 PM EDT | Severe Thunderstorm Warning | ALY | 48 min |
| Aug 12, 3:12 PM EDT | Severe Thunderstorm Warning | ALY | 18 min |
| Aug 12, 3:29 PM EDT | Severe Thunderstorm Warning | ALY | 61 min |
| Aug 12, 4:00 PM EDT | Heat Advisory | ALY | 28 hr |
| Aug 12, 4:05 PM EDT | Areal Flood Advisory | ALY | 2 hr |
| Aug 13, 3:29 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 13, 5:10 PM EDT | Special Weather Statement | ALY | 50 min |
| Aug 13, 5:58 PM EDT | Special Weather Statement | ALY | 47 min |
| Aug 13, 7:14 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Aug 13, 7:28 PM EDT | Severe Thunderstorm Warning | ALY | 35 min |
| Aug 13, 8:10 PM EDT | Special Weather Statement | ALY | 50 min |
| Aug 18, 3:33 AM EDT | Flash Flood Watch | ALY | 32 hr |
| Aug 21, 4:18 AM EDT | Flood Watch | ALY | 66 hr |
| Aug 22, 6:10 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Aug 22, 6:58 PM EDT | Areal Flood Advisory | ALY | 77 min |
| Aug 23, 3:18 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Aug 23, 4:42 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Aug 25, 3:14 PM EDT | Heat Advisory | ALY | 29 hr |
| Aug 30, 3:14 PM EDT | Flash Flood Watch | ALY | 61 hr |
| Aug 30, 3:41 PM EDT | Special Weather Statement | ALY | 34 min |
| Sep 1, 9:19 PM EDT | Areal Flood Advisory | ALY | 5 hr |
| Sep 1, 10:53 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 1, 11:49 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 6, 7:15 AM EDT | Dense Fog Advisory | ALY | 105 min |
| Sep 6, 11:43 AM EDT | Special Weather Statement | ALY | 32 min |
| Sep 6, 12:15 PM EDT | Special Weather Statement | ALY | 30 min |
| Sep 8, 7:11 PM EDT | Special Weather Statement | ALY | 49 min |
| Sep 8, 7:16 PM EDT | Severe Thunderstorm Warning | ALY | 44 min |
| Sep 8, 7:25 PM EDT | Severe Thunderstorm Warning | ALY | 55 min |
| Sep 8, 7:37 PM EDT | Severe Thunderstorm Warning | ALY | 53 min |
| Sep 8, 7:41 PM EDT | Areal Flood Advisory | ALY | 101 min |
| Sep 8, 7:51 PM EDT | Severe Thunderstorm Warning | ALY | 54 min |
| Sep 8, 8:31 PM EDT | Severe Thunderstorm Warning | ALY | 59 min |
| Sep 8, 8:56 PM EDT | Areal Flood Advisory | ALY | 2 hr |
| Sep 8, 9:24 PM EDT | Severe Thunderstorm Warning | ALY | 21 min |
| Sep 15, 10:33 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 15, 11:55 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 15, 2:22 PM EDT | Areal Flood Advisory | ALY | 26 min |
| Sep 15, 2:28 PM EDT | Severe Thunderstorm Warning | ALY | 62 min |
| Sep 15, 2:35 PM EDT | Special Weather Statement | ALY | 25 min |
| Sep 15, 2:48 PM EDT | Flash Flood Warning | ALY | 3 hr |
| Sep 15, 2:56 PM EDT | Special Weather Statement | ALY | 49 min |
| Sep 15, 2:59 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 15, 3:00 PM EDT | Severe Thunderstorm Warning | ALY | 60 min |
| Sep 15, 3:29 PM EDT | Special Weather Statement | ALY | 31 min |
| Sep 15, 3:39 PM EDT | Severe Thunderstorm Warning | ALY | 66 min |
| Sep 15, 3:48 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 15, 4:02 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 15, 4:31 PM EDT | Severe Thunderstorm Warning | ALY | 59 min |
| Sep 15, 4:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Sep 15, 4:41 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 18, 4:29 PM EDT | Severe Thunderstorm Warning | ALY | 21 min |
| Sep 18, 5:08 PM EDT | Special Weather Statement | ALY | 52 min |
| Oct 15, 10:46 PM EDT | Special Weather Statement | ALY | 29 min |
| Oct 16, 12:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 16, 12:35 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Oct 16, 2:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Oct 16, 4:48 PM EDT | Special Weather Statement | ALY | 42 min |
| Oct 16, 8:56 PM EDT | Areal Flood Advisory | ALY | 2 hr |
| Oct 27, 8:34 AM EDT | River Flood Warning | ALY | 11 hr |
| Nov 12, 9:52 AM EST | Areal Flood Advisory | ALY | 3 hr |
| Nov 12, 10:59 AM EST | Special Weather Statement | ALY | 46 min |
| Nov 13, 2:53 PM EST | Areal Flood Advisory | ALY | 3 hr |
| Nov 25, 3:32 PM EST | Winter Weather Advisory | ALY | 36 hr |
| Nov 26, 3:16 AM EST | Winter Storm Warning | ALY | 25 hr |
| Nov 26, 4:42 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 2, 6:50 PM EST | Special Weather Statement | ALY | 55 min |
| Dec 2, 7:46 PM EST | Special Weather Statement | ALY | 29 min |
| Dec 6, 4:00 AM EST | Wind Advisory | ALY | 21 hr |
| Dec 10, 3:09 PM EST | Wind Advisory | ALY | 36 hr |
| Dec 11, 8:38 PM EST | Severe Thunderstorm Warning | ALY | 52 min |
| Dec 11, 9:15 PM EST | Severe Thunderstorm Warning | ALY | 60 min |
| Dec 11, 9:49 PM EST | Severe Thunderstorm Warning | ALY | 45 min |
| Dec 17, 3:35 AM EST | Winter Weather Advisory | ALY | 50 hr |
| Dec 18, 2:54 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 24, 3:33 AM EST | Winter Weather Advisory | ALY | 44 hr |
| Dec 25, 5:44 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Dec 27, 3:21 AM EST | Winter Weather Advisory | ALY | 28 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 | 44 |
| Severe Thunderstorm Watch | 12 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 52 |
| Flooding | |
| Areal Flood Warning | 4 |
| Flash Flood Warning | 5 |
| River Flood Warning | 1 |
| Flash Flood Watch | 5 |
| Flood Watch | 1 |
| Areal Flood Advisory | 29 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 10 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Heat Advisory | 10 |
| Cold | |
| Frost Advisory | 1 |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 3 |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20202022
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.