Alert archive / Arkansas / Jefferson County
Weather alerts in Jefferson County, Arkansas, 2009
231 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Jefferson County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 231
- Warnings
- 84
- Watches
- 42
- Advisories
- 52
- Busiest month
- May48 alerts
- Busiest day
- May 6, 200919 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
1 of 5 tornado warnings covering Jefferson County in 2009 had a tornado report inside them.
Jefferson County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 5 | 1 | 80% | 0 | ||
| Severe thunderstorm warnings | 51 | 21 | 59% | 8 | 75% | 23 min |
| Flash flood warnings | 18 | 8 | 56% | 0 |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Little Rock, AR: tornado warnings | 50 | 8 | 84% | 11 | 82% | 26 min |
| NWS Little Rock, AR: severe thunderstorm warnings | 548 | 174 | 68% | 413 | 85% | 25 min |
| NWS Little Rock, AR: flash flood warnings | 167 | 71 | 57% | 138 | 87% | 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 2, 5:01 PM CST | Dense Fog Advisory | LZK | 11 hr |
| Jan 5, 3:35 AM CST | Flash Flood Watch | LZK | 23 hr |
| Jan 26, 3:57 AM CST | Winter Storm Watch | LZK | 24 hr |
| Jan 26, 3:57 AM CST | Freezing Rain Advisory | LZK | 35 hr |
| Jan 27, 3:45 AM CST | Winter Weather Advisory | LZK | 26 hr |
| Jan 30, 5:09 AM CST | Freezing Fog Advisory | LZK | 4 hr |
| Feb 6, 3:50 AM CST | Lake Wind Advisory | LZK | 14 hr |
| Feb 7, 3:35 AM CST | Lake Wind Advisory | LZK | 14 hr |
| Feb 8, 2:53 PM CST | Lake Wind Advisory | LZK | 27 hr |
| Feb 10, 3:56 AM CST | Wind Advisory | LZK | 38 hr |
| Feb 10, 11:45 PM CST | Tornado Watch | SPC | 6 hr |
| Feb 11, 2:30 AM CST | Mesoscale Discussion | SPC | 90 min |
| Feb 17, 5:44 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 17, 7:09 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Feb 17, 9:45 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 18, 2:58 AM CST | Lake Wind Advisory | LZK | 13 hr |
| Feb 26, 3:58 AM CST | Lake Wind Advisory | LZK | 14 hr |
| Feb 26, 9:09 PM CST | Mesoscale Discussion | SPC | 96 min |
| Feb 26, 9:40 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Feb 26, 10:36 PM CST | Mesoscale Discussion | SPC | 114 min |
| Feb 26, 11:17 PM CST | Severe Thunderstorm Warning | LZK | 58 min |
| Feb 27, 1:45 AM CST | Mesoscale Discussion | SPC | 30 min |
| Feb 27, 4:24 AM CST | Severe Thunderstorm Warning | LZK | 36 min |
| Feb 27, 8:29 AM CST | Mesoscale Discussion | SPC | 31 min |
| Feb 27, 2:40 PM CST | Mesoscale Discussion | SPC | 65 min |
| Feb 27, 8:48 PM CST | Mesoscale Discussion | SPC | 117 min |
| Feb 28, 3:23 AM CST | Winter Weather Advisory | LZK | 24 hr |
| Mar 4, 9:27 PM CST | Lake Wind Advisory | LZK | 45 hr |
| Mar 7, 4:30 AM CST | Lake Wind Advisory | LZK | 14 hr |
| Mar 8, 4:30 AM CDT | Lake Wind Advisory | LZK | 14 hr |
| Mar 8, 10:11 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 17, 2:35 AM CDT | Dense Fog Advisory | LZK | 8 hr |
| Mar 23, 3:57 AM CDT | Lake Wind Advisory | LZK | 15 hr |
| Mar 24, 3:43 AM CDT | Lake Wind Advisory | LZK | 15 hr |
| Mar 24, 2:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Mar 26, 6:15 AM CDT | Dense Fog Advisory | LZK | 3 hr |
| Mar 27, 6:35 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 27, 10:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Mar 28, 4:18 AM CDT | Lake Wind Advisory | LZK | 15 hr |
| Mar 31, 8:44 AM CDT | River Flood Advisory | LZK | 46 hr |
| Apr 1, 2:45 PM CDT | Lake Wind Advisory | LZK | 34 hr |
| Apr 2, 8:01 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Apr 2, 8:45 AM CDT | River Flood Advisory | LZK | 36 hr |
| Apr 2, 11:40 AM CDT | Wind Advisory | LZK | 9 hr |
| Apr 2, 3:41 PM CDT | Severe Thunderstorm Warning | LZK | 49 min |
| Apr 2, 3:56 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Apr 3, 2:11 PM CDT | Freeze Watch | LZK | 48 hr |
| Apr 5, 2:49 AM CDT | Lake Wind Advisory | LZK | 40 hr |
| Apr 5, 2:26 PM CDT | Freeze Warning | LZK | 43 hr |
| Apr 9, 3:14 AM CDT | Lake Wind Advisory | LZK | 22 hr |
| Apr 9, 7:21 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 9, 8:44 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Apr 9, 9:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 9, 10:45 PM CDT | Severe Thunderstorm Warning | LZK | 49 min |
| Apr 9, 11:16 PM CDT | Severe Thunderstorm Warning | LZK | 44 min |
| Apr 9, 11:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Apr 10, 4:59 AM CDT | Lake Wind Advisory | LZK | 14 hr |
| Apr 12, 7:13 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 12, 7:44 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 12, 9:27 AM CDT | Severe Thunderstorm Warning | LZK | 33 min |
| Apr 12, 10:20 AM CDT | Severe Thunderstorm Warning | LZK | 25 min |
| Apr 12, 12:00 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 12, 12:11 PM CDT | Areal Flood Advisory | LZK | 156 days |
| Apr 19, 2:43 AM CDT | Lake Wind Advisory | LZK | 12 hr |
| Apr 19, 12:14 PM CDT | Mesoscale Discussion | SPC | 61 min |
| Apr 19, 12:38 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 19, 2:22 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Apr 23, 3:10 AM CDT | Lake Wind Advisory | LZK | 16 hr |
| Apr 24, 3:49 AM CDT | Lake Wind Advisory | LZK | 15 hr |
| Apr 26, 11:50 AM CDT | River Flood Advisory | LZK | 43 hr |
| Apr 27, 2:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 27, 2:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 27, 7:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 28, 5:03 AM CDT | Flash Flood Watch | LZK | 10 hr |
| May 1, 3:33 PM CDT | Flash Flood Watch | LZK | 47 hr |
| May 1, 9:56 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 2, 1:45 AM CDT | Mesoscale Discussion | SPC | 90 min |
| May 2, 9:23 AM CDT | Mesoscale Discussion | SPC | 97 min |
| May 2, 12:17 PM CDT | Tornado Watch | SPC | 7 hr |
| May 2, 2:02 PM CDT | Severe Thunderstorm Warning | LZK | 43 min |
| May 2, 2:08 PM CDT | Tornado Warning | LZK | 52 min |
| May 2, 2:56 PM CDT | Tornado Warning | LZK | 49 min |
| May 3, 9:19 AM CDT | River Flood Advisory | LZK | 22 hr |
| May 4, 9:38 AM CDT | River Flood Advisory | LZK | 21 hr |
| May 5, 4:10 AM CDT | Flash Flood Watch | LZK | 33 hr |
| May 5, 8:45 AM CDT | River Flood Advisory | LZK | 36 hr |
| May 5, 10:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 5, 10:27 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 5, 11:27 PM CDT | Severe Thunderstorm Warning | LZK | 63 min |
| May 6, 12:22 AM CDT | Severe Thunderstorm Warning | LZK | 53 min |
| May 6, 12:53 AM CDT | Mesoscale Discussion | SPC | 37 min |
| May 6, 12:54 AM CDT | Tornado Watch | SPC | 5 hr |
| May 6, 1:27 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 6, 1:29 AM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| May 6, 1:44 AM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| May 6, 2:13 AM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| May 6, 2:15 AM CDT | Flash Flood Warning | LZK | 4 hr |
| May 6, 2:18 AM CDT | Severe Thunderstorm Warning | LZK | 42 min |
| May 6, 3:35 AM CDT | Severe Thunderstorm Warning | LZK | 55 min |
| May 6, 3:50 AM CDT | Flash Flood Warning | LZK | 4 hr |
| May 6, 4:07 AM CDT | Severe Thunderstorm Warning | LZK | 53 min |
| May 6, 6:55 AM CDT | Flash Flood Warning | LZK | 5 hr |
| May 6, 7:46 AM CDT | Flash Flood Warning | LZK | 4 hr |
| May 6, 9:22 AM CDT | River Flood Warning | LZK | 23 hr |
| May 6, 12:01 PM CDT | Areal Flood Warning | LZK | 3 hr |
| May 7, 5:03 AM CDT | Dense Fog Advisory | LZK | 5 hr |
| May 7, 2:58 PM CDT | River Flood Advisory | LZK | 16 hr |
| May 7, 4:27 PM CDT | Severe Thunderstorm Warning | LZK | 48 min |
| May 7, 5:20 PM CDT | Flash Flood Warning | LZK | 115 min |
| May 8, 3:53 AM CDT | Flash Flood Watch | LZK | 4 days |
| May 8, 8:31 AM CDT | River Flood Warning | LZK | 47 hr |
| May 8, 10:59 AM CDT | Lake Wind Advisory | LZK | 7 hr |
| May 9, 4:19 AM CDT | Severe Thunderstorm Warning | LZK | 41 min |
| May 9, 12:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 9, 12:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 9, 1:47 PM CDT | Severe Thunderstorm Warning | LZK | 43 min |
| May 9, 3:03 PM CDT | Flash Flood Warning | LZK | 3 hr |
| May 13, 3:23 AM CDT | Lake Wind Advisory | LZK | 16 hr |
| May 14, 1:01 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 19, 2:04 PM CDT | River Flood Advisory | LZK | 36 hr |
| May 21, 9:38 AM CDT | River Flood Advisory | LZK | 36 hr |
| May 21, 9:38 AM CDT | River Flood Advisory | LZK | 36 hr |
| Jun 3, 2:47 PM CDT | Severe Thunderstorm Warning | LZK | 43 min |
| Jun 3, 5:19 PM CDT | Severe Thunderstorm Warning | LZK | 41 min |
| Jun 3, 5:55 PM CDT | Severe Thunderstorm Warning | LZK | 50 min |
| Jun 3, 6:23 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Jun 3, 6:54 PM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| Jun 10, 6:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 10, 6:37 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 10, 11:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 11, 1:21 AM CDT | Severe Thunderstorm Warning | LZK | 54 min |
| Jun 11, 1:26 AM CDT | Severe Thunderstorm Warning | LZK | 64 min |
| Jun 11, 1:40 AM CDT | Mesoscale Discussion | SPC | 35 min |
| Jun 12, 9:38 AM CDT | Mesoscale Discussion | SPC | 67 min |
| Jun 12, 10:03 AM CDT | Mesoscale Discussion | SPC | 87 min |
| Jun 12, 11:35 AM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Jun 12, 11:59 AM CDT | Severe Thunderstorm Warning | LZK | 20 min |
| Jun 12, 1:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 12, 3:05 PM CDT | Severe Thunderstorm Warning | LZK | 55 min |
| Jun 12, 3:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 12, 3:32 PM CDT | Severe Thunderstorm Warning | LZK | 58 min |
| Jun 12, 4:28 PM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| Jun 12, 11:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 12, 11:53 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 13, 3:25 AM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 13, 4:39 PM CDT | Severe Thunderstorm Warning | LZK | 36 min |
| Jun 13, 5:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Jun 13, 5:21 PM CDT | Severe Thunderstorm Warning | LZK | 39 min |
| Jun 13, 5:52 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 13, 5:53 PM CDT | Severe Thunderstorm Warning | LZK | 37 min |
| Jun 14, 1:51 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 14, 5:26 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 23, 12:03 PM CDT | Heat Advisory | LZK | 7 hr |
| Jun 24, 3:44 AM CDT | Heat Advisory | LZK | 15 hr |
| Jun 26, 3:18 AM CDT | Heat Advisory | LZK | 40 hr |
| Jun 30, 12:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 30, 1:54 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 3:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 30, 5:05 PM CDT | Severe Thunderstorm Warning | LZK | 40 min |
| Jun 30, 6:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 6:48 PM CDT | Severe Thunderstorm Warning | LZK | 42 min |
| Jul 12, 3:43 AM CDT | Heat Advisory | LZK | 4 days |
| Jul 16, 4:00 AM CDT | Heat Advisory | LZK | 14 hr |
| Jul 16, 2:19 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Jul 16, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 16, 6:29 PM CDT | Severe Thunderstorm Warning | LZK | 61 min |
| Jul 16, 7:24 PM CDT | Severe Thunderstorm Warning | LZK | 66 min |
| Jul 26, 4:28 PM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| Jul 26, 5:11 PM CDT | Severe Thunderstorm Warning | LZK | 29 min |
| Jul 27, 2:48 PM CDT | Flash Flood Watch | LZK | 20 hr |
| Jul 29, 4:48 AM CDT | Flash Flood Watch | LZK | 38 hr |
| Jul 30, 2:49 PM CDT | Severe Thunderstorm Warning | LZK | 41 min |
| Jul 30, 3:21 PM CDT | Severe Thunderstorm Warning | LZK | 39 min |
| Jul 30, 3:31 PM CDT | Tornado Warning | LZK | 22 min |
| Aug 1, 10:35 AM CDT | Flash Flood Watch | LZK | 8 hr |
| Aug 5, 4:19 AM CDT | Mesoscale Discussion | SPC | 56 min |
| Aug 5, 4:23 AM CDT | Tornado Warning | LZK | 36 min |
| Aug 5, 7:59 AM CDT | Severe Thunderstorm Warning | LZK | 46 min |
| Aug 5, 8:40 AM CDT | Severe Thunderstorm Warning | LZK | 35 min |
| Aug 20, 7:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 21, 4:10 AM CDT | Flash Flood Warning | LZK | 3 hr |
| Sep 15, 3:44 AM CDT | Flash Flood Watch | LZK | 3 days |
| Sep 15, 9:13 PM CDT | Flash Flood Warning | LZK | 4 hr |
| Sep 17, 2:38 PM CDT | Flash Flood Warning | LZK | 3 hr |
| Oct 1, 6:29 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Oct 1, 8:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Oct 1, 9:02 PM CDT | Severe Thunderstorm Warning | LZK | 43 min |
| Oct 7, 4:57 AM CDT | Flash Flood Watch | LZK | 56 hr |
| Oct 9, 6:59 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 9, 8:24 AM CDT | Mesoscale Discussion | SPC | 66 min |
| Oct 9, 8:36 AM CDT | Tornado Watch | SPC | 4 hr |
| Oct 9, 9:07 AM CDT | Flash Flood Warning | LZK | 3 hr |
| Oct 9, 9:42 AM CDT | Severe Thunderstorm Warning | LZK | 63 min |
| Oct 9, 9:49 AM CDT | Severe Thunderstorm Warning | LZK | 41 min |
| Oct 9, 9:57 AM CDT | River Flood Advisory | LZK | 21 hr |
| Oct 9, 10:26 AM CDT | Severe Thunderstorm Warning | LZK | 64 min |
| Oct 10, 9:12 AM CDT | River Flood Advisory | LZK | 22 hr |
| Oct 12, 10:19 PM CDT | Dense Fog Advisory | LZK | 11 hr |
| Oct 13, 10:22 AM CDT | Flash Flood Watch | LZK | 9 hr |
| Oct 13, 10:34 AM CDT | Flash Flood Warning | LZK | 8 hr |
| Oct 13, 12:18 PM CDT | Flash Flood Warning | LZK | 6 hr |
| Oct 13, 7:04 PM CDT | Flash Flood Watch | LZK | 3 hr |
| Oct 21, 2:51 PM CDT | Flash Flood Watch | LZK | 30 hr |
| Oct 28, 4:06 AM CDT | Flash Flood Watch | LZK | 59 hr |
| Oct 29, 1:51 PM CDT | Tornado Watch | SPC | 7 hr |
| Oct 29, 3:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Oct 29, 3:45 PM CDT | Tornado Warning | LZK | 45 min |
| Oct 29, 4:33 PM CDT | Severe Thunderstorm Warning | LZK | 42 min |
| Oct 29, 5:26 PM CDT | Flash Flood Warning | LZK | 4 hr |
| Oct 29, 5:39 PM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| Oct 29, 7:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Oct 29, 7:12 PM CDT | Flash Flood Warning | LZK | 6 hr |
| Oct 29, 9:07 PM CDT | Mesoscale Discussion | SPC | 53 min |
| Oct 29, 10:30 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Oct 29, 10:54 PM CDT | Severe Thunderstorm Warning | LZK | 51 min |
| Oct 29, 11:08 PM CDT | Flash Flood Warning | LZK | 7 hr |
| Oct 29, 11:58 PM CDT | Severe Thunderstorm Warning | LZK | 47 min |
| Oct 30, 12:55 AM CDT | Flash Flood Warning | LZK | 5 hr |
| Oct 30, 6:05 AM CDT | Areal Flood Warning | LZK | 12 hr |
| Nov 26, 1:36 PM CST | Freeze Warning | LZK | 19 hr |
| Dec 8, 4:09 AM CST | Lake Wind Advisory | LZK | 36 hr |
| Dec 8, 9:43 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 8, 11:41 AM CST | Severe Thunderstorm Warning | LZK | 49 min |
| Dec 13, 12:02 AM CST | Dense Fog Advisory | LZK | 10 hr |
| Dec 22, 3:21 PM CST | Flash Flood Watch | LZK | 49 hr |
| Dec 23, 3:20 AM CST | Lake Wind Advisory | LZK | 60 hr |
| Dec 24, 9:43 AM CST | Areal Flood Warning | LZK | 4 hr |
| Dec 24, 9:49 AM CST | Flash Flood Warning | LZK | 4 hr |
| Dec 24, 10:13 AM CST | Areal Flood Warning | LZK | 4 hr |
| Dec 24, 2:05 PM CST | Areal Flood Warning | LZK | 4 hr |
| Dec 24, 6:06 PM CST | Areal Flood Warning | LZK | 14 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 | 51 |
| Tornado Warning | 5 |
| Severe Thunderstorm Watch | 18 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 53 |
| Flooding | |
| Areal Flood Warning | 6 |
| Flash Flood Warning | 18 |
| River Flood Warning | 2 |
| Flash Flood Watch | 15 |
| Areal Flood Advisory | 1 |
| River Flood Advisory | 12 |
| Winter | |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 5 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 1 |
| Wind and dust | |
| Lake Wind Advisory | 22 |
| Wind Advisory | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.