Alert archive / New York / Rensselaer County
Weather alerts in Rensselaer County, New York, 2011
237 weather alerts in 2011, 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 2011. Tap one for its archive.
- Alerts
- 237
- Warnings
- 79
- Watches
- 30
- Advisories
- 52
- Busiest month
- June43 alerts
- Busiest day
- June 9, 201110 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, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 37 | 32 | 14% | 31 | 94% | 31 min |
| Flash flood warnings | 5 | 2 | 60% | 1 | 0% |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Albany, NY: tornado warnings | 11 | 3 | 73% | 9 | 56% | 25 min |
| NWS Albany, NY: severe thunderstorm warnings | 189 | 118 | 38% | 402 | 88% | 29 min |
| NWS Albany, NY: flash flood warnings | 49 | 24 | 51% | 94 | 69% | 95 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 6, 4:33 AM EST | Winter Storm Watch | ALY | 23 hr |
| Jan 7, 3:30 AM EST | Winter Weather Advisory | ALY | 31 hr |
| Jan 10, 10:23 AM EST | Winter Storm Watch | ALY | 26 hr |
| Jan 11, 3:40 AM EST | Winter Storm Warning | ALY | 42 hr |
| Jan 17, 4:07 AM EST | Winter Storm Watch | ALY | 12 hr |
| Jan 17, 4:23 PM EST | Winter Storm Warning | ALY | 34 hr |
| Jan 18, 3:33 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 18, 8:01 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 18, 12:37 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 20, 3:57 AM EST | Winter Weather Advisory | ALY | 32 hr |
| Jan 23, 4:14 PM EST | Wind Chill Advisory | ALY | 17 hr |
| Jan 25, 4:43 AM EST | Winter Weather Advisory | ALY | 7 hr |
| Jan 31, 3:39 AM EST | Winter Storm Watch | ALY | 12 hr |
| Jan 31, 3:15 PM EST | Winter Storm Warning | ALY | 52 hr |
| Feb 1, 2:42 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 5, 4:39 AM EST | Winter Weather Advisory | ALY | 22 hr |
| Feb 5, 1:22 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 5, 8:45 PM EST | Special Weather Statement | ALY | 60 min |
| Feb 7, 3:46 PM EST | Winter Weather Advisory | ALY | 23 hr |
| Feb 12, 3:52 PM EST | Special Weather Statement | ALY | 23 min |
| Feb 12, 4:15 PM EST | Special Weather Statement | ALY | 30 min |
| Feb 14, 4:35 AM EST | Wind Advisory | ALY | 24 hr |
| Feb 18, 4:03 AM EST | Wind Advisory | ALY | 41 hr |
| Feb 18, 3:36 PM EST | High Wind Warning | ALY | 30 hr |
| Feb 20, 4:07 AM EST | Winter Weather Advisory | ALY | 32 hr |
| Feb 24, 4:31 AM EST | Winter Storm Warning | ALY | 39 hr |
| Feb 24, 4:14 PM EST | Winter Weather Advisory | ALY | 27 hr |
| Feb 25, 4:28 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 26, 2:20 PM EST | Winter Weather Advisory | ALY | 20 hr |
| Feb 27, 2:47 PM EST | Winter Weather Advisory | ALY | 21 hr |
| Feb 28, 9:13 AM EST | Areal Flood Advisory | ALY | 6 hr |
| Mar 2, 6:16 PM EST | Special Weather Statement | ALY | 29 min |
| Mar 2, 6:42 PM EST | Special Weather Statement | ALY | 33 min |
| Mar 5, 4:01 PM EST | Flood Watch | ALY | 42 hr |
| Mar 5, 4:07 PM EST | Winter Storm Warning | ALY | 44 hr |
| Mar 6, 3:53 AM EST | Winter Weather Advisory | ALY | 32 hr |
| Mar 6, 12:19 PM EST | River Flood Warning | ALY | 33 hr |
| Mar 6, 12:19 PM EST | River Flood Warning | ALY | 24 hr |
| Mar 6, 12:59 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 6, 1:52 PM EST | Areal Flood Advisory | ALY | 6 hr |
| Mar 6, 7:32 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 9, 1:00 PM EST | Flood Watch | ALY | 53 hr |
| Mar 10, 3:52 PM EST | Wind Advisory | ALY | 12 hr |
| Mar 11, 6:52 AM EST | Areal Flood Advisory | ALY | 2 hr |
| Mar 12, 12:32 AM EST | River Flood Warning | ALY | 4 hr |
| Mar 12, 9:46 AM EST | River Flood Warning | ALY | 12 hr |
| Mar 17, 3:45 PM EDT | Wind Advisory | ALY | 26 hr |
| Mar 19, 3:33 AM EDT | River Flood Warning | ALY | 10 hr |
| Mar 30, 4:22 AM EDT | Winter Storm Watch | ALY | 23 hr |
| Mar 31, 3:42 AM EDT | Winter Storm Warning | ALY | 34 hr |
| Mar 31, 3:42 AM EDT | Winter Weather Advisory | ALY | 34 hr |
| Apr 3, 3:01 PM EDT | Flood Watch | ALY | 39 hr |
| Apr 11, 12:26 PM EDT | Flood Watch | ALY | 25 hr |
| Apr 12, 12:00 PM EDT | River Flood Warning | ALY | 3 days |
| Apr 15, 3:56 PM EDT | Wind Advisory | ALY | 37 hr |
| Apr 17, 5:14 AM EDT | Wind Advisory | ALY | 16 hr |
| Apr 17, 6:23 PM EDT | Special Weather Statement | ALY | 37 min |
| Apr 17, 6:27 PM EDT | Special Weather Statement | ALY | 33 min |
| Apr 20, 9:16 AM EDT | Special Weather Statement | ALY | 29 min |
| Apr 20, 8:01 PM EDT | Special Weather Statement | ALY | 29 min |
| Apr 25, 11:13 PM EDT | River Flood Warning | ALY | 14 days |
| Apr 26, 4:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Apr 27, 12:14 PM EDT | River Flood Warning | ALY | 4 days |
| Apr 27, 5:01 PM EDT | Flash Flood Watch | ALY | 22 hr |
| Apr 28, 3:32 AM EDT | Mesoscale Discussion | SPC | 28 min |
| Apr 28, 6:21 AM EDT | Mesoscale Discussion | SPC | 54 min |
| Apr 28, 6:27 AM EDT | Severe Thunderstorm Warning | ALY | 63 min |
| Apr 28, 7:13 AM EDT | Severe Thunderstorm Warning | ALY | 47 min |
| Apr 28, 7:33 AM EDT | Severe Thunderstorm Warning | ALY | 57 min |
| Apr 28, 8:19 AM EDT | River Flood Warning | ALY | 6 days |
| Apr 28, 9:45 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 28, 11:49 AM EDT | Mesoscale Discussion | SPC | 56 min |
| Apr 28, 12:22 PM EDT | River Flood Warning | ALY | 11 hr |
| May 5, 4:33 PM EDT | Frost Advisory | ALY | 15 hr |
| May 7, 4:17 PM EDT | Special Weather Statement | ALY | 28 min |
| May 16, 11:26 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| May 19, 10:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| May 20, 2:35 PM EDT | Flash Flood Warning | ALY | 2 hr |
| May 20, 3:46 PM EDT | Flash Flood Warning | ALY | 5 hr |
| May 20, 6:59 PM EDT | Flash Flood Warning | ALY | 3 hr |
| May 21, 8:47 AM EDT | River Flood Warning | ALY | 12 hr |
| May 24, 1:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| May 26, 2:16 PM EDT | Tornado Watch | SPC | 8 hr |
| May 26, 2:57 PM EDT | Mesoscale Discussion | SPC | 63 min |
| May 26, 6:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| May 26, 10:44 PM EDT | Severe Thunderstorm Warning | ALY | 61 min |
| May 26, 11:32 PM EDT | Severe Thunderstorm Warning | ALY | 58 min |
| May 27, 12:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| May 27, 2:00 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 27, 5:49 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 29, 7:23 AM EDT | River Flood Warning | ALY | 26 hr |
| May 30, 12:28 AM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 1, 5:58 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 10:02 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 1, 12:26 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 1, 12:30 PM EDT | Severe Thunderstorm Warning | ALY | 60 min |
| Jun 1, 1:28 PM EDT | Severe Thunderstorm Warning | ALY | 62 min |
| Jun 1, 2:13 PM EDT | Severe Thunderstorm Warning | ALY | 77 min |
| Jun 1, 2:28 PM EDT | Severe Thunderstorm Warning | ALY | 62 min |
| Jun 1, 5:27 PM EDT | Special Weather Statement | ALY | 33 min |
| Jun 1, 7:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 8, 3:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 8, 4:15 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 8, 5:02 PM EDT | Severe Thunderstorm Warning | ALY | 43 min |
| Jun 8, 5:27 PM EDT | Severe Thunderstorm Warning | ALY | 63 min |
| Jun 8, 6:07 PM EDT | Severe Thunderstorm Warning | ALY | 68 min |
| Jun 8, 6:31 PM EDT | Severe Thunderstorm Warning | ALY | 20 min |
| Jun 8, 7:15 PM EDT | Severe Thunderstorm Warning | ALY | 45 min |
| Jun 8, 7:28 PM EDT | Severe Thunderstorm Warning | ALY | 62 min |
| Jun 8, 7:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 8, 8:02 PM EDT | Severe Thunderstorm Warning | ALY | 43 min |
| Jun 8, 11:59 PM EDT | Severe Thunderstorm Warning | ALY | 61 min |
| Jun 9, 11:33 AM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 9, 12:06 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 9, 2:08 PM EDT | Severe Thunderstorm Warning | ALY | 67 min |
| Jun 9, 2:55 PM EDT | Severe Thunderstorm Warning | ALY | 65 min |
| Jun 9, 3:10 PM EDT | Severe Thunderstorm Warning | ALY | 50 min |
| Jun 9, 3:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 9, 3:43 PM EDT | Severe Thunderstorm Warning | ALY | 62 min |
| Jun 9, 7:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 11, 8:05 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jun 11, 9:10 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jun 17, 4:16 PM EDT | Special Weather Statement | ALY | 59 min |
| Jun 17, 4:21 PM EDT | Severe Thunderstorm Warning | ALY | 54 min |
| Jun 17, 4:57 PM EDT | Areal Flood Advisory | ALY | 2 hr |
| Jun 22, 4:10 AM EDT | Flash Flood Watch | ALY | 37 hr |
| Jun 22, 6:02 PM EDT | Special Weather Statement | ALY | 58 min |
| Jun 22, 6:45 PM EDT | Special Weather Statement | ALY | 60 min |
| Jun 23, 10:18 AM EDT | Special Weather Statement | ALY | 57 min |
| Jun 25, 3:05 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jun 25, 4:12 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jun 25, 5:17 PM EDT | Special Weather Statement | ALY | 43 min |
| Jun 25, 6:44 PM EDT | Special Weather Statement | ALY | 46 min |
| Jun 28, 10:06 PM EDT | Special Weather Statement | ALY | 24 min |
| Jun 28, 10:31 PM EDT | Special Weather Statement | ALY | 29 min |
| Jul 3, 12:00 PM EDT | Special Weather Statement | ALY | 45 min |
| Jul 3, 12:48 PM EDT | Special Weather Statement | ALY | 42 min |
| Jul 3, 5:05 PM EDT | Special Weather Statement | ALY | 55 min |
| Jul 6, 1:04 PM EDT | Mesoscale Discussion | SPC | 56 min |
| Jul 6, 1:29 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 6, 3:51 PM EDT | Severe Thunderstorm Warning | ALY | 39 min |
| Jul 6, 4:25 PM EDT | Severe Thunderstorm Warning | ALY | 45 min |
| Jul 6, 5:35 PM EDT | Severe Thunderstorm Warning | ALY | 40 min |
| Jul 6, 5:55 PM EDT | Severe Thunderstorm Warning | ALY | 65 min |
| Jul 6, 6:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 6, 6:12 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Jul 20, 4:22 AM EDT | Excessive Heat Watch | ALY | 36 hr |
| Jul 20, 3:52 PM EDT | Excessive Heat Warning | ALY | 28 hr |
| Jul 20, 3:52 PM EDT | Heat Advisory | ALY | 28 hr |
| Jul 22, 4:22 PM EDT | Heat Advisory | ALY | 28 hr |
| Jul 26, 11:05 AM EDT | Mesoscale Discussion | SPC | 55 min |
| Jul 26, 11:28 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 26, 1:42 PM EDT | Severe Thunderstorm Warning | ALY | 63 min |
| Jul 26, 2:28 PM EDT | Areal Flood Advisory | ALY | 107 min |
| Jul 26, 2:42 PM EDT | Severe Thunderstorm Warning | ALY | 63 min |
| Jul 26, 3:39 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 29, 6:56 PM EDT | Special Weather Statement | ALY | 64 min |
| Aug 1, 12:07 PM EDT | Mesoscale Discussion | SPC | 53 min |
| Aug 14, 3:59 PM EDT | Flood Watch | ALY | 30 hr |
| Aug 15, 5:30 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Aug 15, 6:43 PM EDT | Areal Flood Advisory | ALY | 6 hr |
| Aug 18, 2:55 PM EDT | Severe Thunderstorm Warning | ALY | 65 min |
| Aug 19, 1:04 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 19, 3:32 PM EDT | Special Weather Statement | ALY | 28 min |
| Aug 19, 4:45 PM EDT | Special Weather Statement | ALY | 30 min |
| Aug 21, 12:52 PM EDT | Severe Thunderstorm Warning | ALY | 40 min |
| Aug 21, 1:04 PM EDT | Severe Thunderstorm Warning | ALY | 56 min |
| Aug 21, 1:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 21, 4:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Aug 21, 6:08 PM EDT | Severe Thunderstorm Warning | ALY | 67 min |
| Aug 21, 6:25 PM EDT | Severe Thunderstorm Warning | ALY | 65 min |
| Aug 21, 7:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Aug 21, 7:29 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Aug 26, 4:47 AM EDT | Flood Watch | ALY | 66 hr |
| Aug 26, 5:21 AM EDT | Tropical Storm Watch | ALY | 36 hr |
| Aug 27, 5:34 AM EDT | Tropical Storm Warning | ALY | 41 hr |
| Aug 27, 4:06 PM EDT | Special Weather Statement | ALY | 54 min |
| Aug 27, 6:21 PM EDT | Special Weather Statement | ALY | 54 min |
| Aug 28, 8:51 AM EDT | Flash Flood Warning | ALY | 6 hr |
| Aug 28, 9:19 AM EDT | River Flood Warning | ALY | 32 hr |
| Aug 28, 2:50 PM EDT | Areal Flood Warning | ALY | 12 hr |
| Aug 28, 4:54 PM EDT | River Flood Warning | ALY | 48 hr |
| Aug 28, 4:54 PM EDT | River Flood Warning | ALY | 43 hr |
| Aug 28, 9:09 PM EDT | Areal Flood Advisory | ALY | 12 hr |
| Aug 28, 9:54 PM EDT | River Flood Warning | ALY | 58 hr |
| Aug 28, 10:23 PM EDT | River Flood Warning | ALY | 45 hr |
| Aug 29, 7:34 AM EDT | River Flood Warning | ALY | 13 hr |
| Sep 3, 4:07 AM EDT | Flash Flood Watch | ALY | 3 days |
| Sep 4, 2:43 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Sep 4, 5:47 PM EDT | Severe Thunderstorm Warning | ALY | 58 min |
| Sep 4, 6:06 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Sep 4, 6:41 PM EDT | Severe Thunderstorm Warning | ALY | 64 min |
| Sep 4, 7:46 PM EDT | Severe Thunderstorm Warning | ALY | 56 min |
| Sep 4, 8:35 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Sep 4, 8:40 PM EDT | Special Weather Statement | ALY | 35 min |
| Sep 5, 1:09 AM EDT | Special Weather Statement | ALY | 51 min |
| Sep 5, 2:19 AM EDT | Flash Flood Warning | ALY | 6 hr |
| Sep 5, 2:45 AM EDT | Special Weather Statement | ALY | 45 min |
| Sep 6, 2:24 AM EDT | Areal Flood Advisory | ALY | 6 hr |
| Sep 6, 4:48 AM EDT | River Flood Warning | ALY | 13 hr |
| Sep 6, 1:03 PM EDT | Flood Watch | ALY | 47 hr |
| Sep 7, 8:12 AM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 7, 11:09 AM EDT | Areal Flood Advisory | ALY | 6 hr |
| Sep 7, 12:45 PM EDT | River Flood Warning | ALY | 30 hr |
| Sep 7, 6:29 PM EDT | River Flood Warning | ALY | 53 hr |
| Sep 7, 11:01 PM EDT | River Flood Warning | ALY | 33 hr |
| Sep 8, 5:11 AM EDT | Areal Flood Advisory | ALY | 6 hr |
| Sep 8, 6:41 AM EDT | River Flood Warning | ALY | 31 hr |
| Sep 16, 3:12 AM EDT | Frost Advisory | ALY | 29 hr |
| Sep 22, 3:35 PM EDT | Flood Watch | ALY | 36 hr |
| Sep 22, 5:26 PM EDT | Special Weather Statement | ALY | 34 min |
| Sep 22, 6:02 PM EDT | Special Weather Statement | ALY | 28 min |
| Sep 22, 7:39 PM EDT | Areal Flood Advisory | ALY | 2 hr |
| Sep 22, 8:35 PM EDT | Special Weather Statement | ALY | 55 min |
| Sep 29, 7:23 AM EDT | Areal Flood Advisory | ALY | 4 hr |
| Sep 29, 11:22 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Sep 29, 4:02 PM EDT | Areal Flood Advisory | ALY | 3 hr |
| Sep 29, 4:15 PM EDT | Special Weather Statement | ALY | 60 min |
| Sep 29, 4:19 PM EDT | Severe Thunderstorm Warning | ALY | 56 min |
| Oct 5, 4:27 AM EDT | Frost Advisory | ALY | 30 hr |
| Oct 5, 4:27 AM EDT | Freeze Warning | ALY | 30 hr |
| Oct 6, 2:01 PM EDT | Frost Advisory | ALY | 19 hr |
| Oct 14, 9:06 PM EDT | Special Weather Statement | ALY | 54 min |
| Oct 15, 4:10 PM EDT | Special Weather Statement | ALY | 65 min |
| Oct 19, 11:50 AM EDT | Wind Advisory | ALY | 16 hr |
| Oct 22, 3:12 AM EDT | Frost Advisory | ALY | 25 hr |
| Oct 27, 3:07 AM EDT | Freeze Warning | ALY | 29 hr |
| Oct 28, 4:14 AM EDT | Winter Storm Watch | ALY | 12 hr |
| Oct 28, 4:11 PM EDT | Winter Storm Warning | ALY | 37 hr |
| Oct 29, 1:01 PM EDT | Mesoscale Discussion | SPC | 5 hr |
| Nov 22, 4:54 AM EST | Winter Weather Advisory | ALY | 31 hr |
| Dec 7, 4:01 AM EST | Winter Weather Advisory | ALY | 24 hr |
| Dec 7, 12:09 PM EST | Winter Storm Warning | ALY | 16 hr |
| Dec 7, 6:21 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 7, 10:25 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 16, 2:27 AM EST | Wind Advisory | ALY | 11 hr |
| Dec 22, 3:15 AM EST | Winter Weather Advisory | ALY | 30 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 archive20102012
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.