Alert archive / Florida / Columbia County
Weather alerts in Columbia County, Florida, 2026
229 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Columbia County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 229
- Warnings
- 47
- Watches
- 20
- Advisories
- 68
- Busiest month
- August60 alerts
- Busiest day
- March 16, 20269 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Columbia County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 22 | 6 | 73% | 2 | 50% | 9 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jacksonville, FL: tornado warnings | 6 | 0 | 100% | 0 | ||
| NWS Jacksonville, FL: severe thunderstorm warnings | 259 | 84 | 68% | 206 | 61% | 18 min |
| NWS Jacksonville, FL: flash flood warnings | 28 | 2 | 93% | 16 | 38% | 102 min |
An office's figures cover every county it serves, including across state lines.
The year is still running; reports filed late and damage surveys can still change these figures.
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 3, 12:52 PM EST | Mesoscale Discussion | SPC | 113 min |
| Jan 6, 12:45 AM EST | Dense Fog Advisory | JAX | 8 hr |
| Jan 7, 11:50 AM EST | Dense Fog Advisory | JAX | 23 hr |
| Jan 11, 3:13 AM EST | Dense Fog Advisory | JAX | 6 hr |
| Jan 12, 10:53 AM EST | Frost Advisory | JAX | 22 hr |
| Jan 13, 11:11 PM EST | Freeze Watch | JAX | 24 hr |
| Jan 14, 11:04 PM EST | Cold Weather Advisory | JAX | 34 hr |
| Jan 14, 11:04 PM EST | Freeze Warning | JAX | 34 hr |
| Jan 16, 11:50 AM EST | Freeze Watch | JAX | 37 hr |
| Jan 16, 3:21 PM EST | Frost Advisory | JAX | 12 hr |
| Jan 16, 8:57 PM EST | Freeze Warning | JAX | 9 hr |
| Jan 18, 12:41 AM EST | Cold Weather Advisory | JAX | 32 hr |
| Jan 18, 12:41 AM EST | Freeze Warning | JAX | 32 hr |
| Jan 18, 10:29 AM EST | Freeze Watch | JAX | 23 hr |
| Jan 19, 9:02 AM EST | Freeze Warning | JAX | 24 hr |
| Jan 19, 12:23 PM EST | Freeze Watch | JAX | 24 hr |
| Jan 20, 12:00 PM EST | Freeze Warning | JAX | 20 hr |
| Jan 24, 11:22 PM EST | Freeze Watch | JAX | 25 hr |
| Jan 25, 9:29 PM EST | Special Weather Statement | JAX | 31 min |
| Jan 26, 12:18 AM EST | Cold Weather Advisory | JAX | 34 hr |
| Jan 26, 12:18 AM EST | Freeze Watch | JAX | 33 hr |
| Jan 26, 12:18 AM EST | Freeze Warning | JAX | 34 hr |
| Jan 27, 9:47 AM EST | Freeze Warning | JAX | 23 hr |
| Jan 27, 12:37 PM EST | Freeze Watch | JAX | 22 hr |
| Jan 27, 10:45 PM EST | Cold Weather Advisory | JAX | 10 hr |
| Jan 28, 10:13 AM EST | Freeze Warning | JAX | 23 hr |
| Jan 29, 11:02 AM EST | Extreme Cold Watch | JAX | 25 hr |
| Jan 29, 11:02 AM EST | Frost Advisory | JAX | 21 hr |
| Jan 29, 11:02 AM EST | Freeze Watch | JAX | 25 hr |
| Jan 30, 12:28 PM EST | Extreme Cold Warning | JAX | 46 hr |
| Jan 30, 12:28 PM EST | Freeze Warning | JAX | 47 hr |
| Jan 31, 10:29 PM EST | Cold Weather Advisory | JAX | 36 hr |
| Jan 31, 10:29 PM EST | Freeze Warning | JAX | 36 hr |
| Feb 1, 9:55 AM EST | Cold Weather Advisory | JAX | 2 hr |
| Feb 1, 10:19 PM EST | Freeze Warning | JAX | 35 hr |
| Feb 4, 12:25 PM EST | Freeze Watch | JAX | 12 hr |
| Feb 5, 12:05 AM EST | Freeze Warning | JAX | 33 hr |
| Feb 6, 12:02 PM EST | Freeze Watch | JAX | 24 hr |
| Feb 6, 10:54 PM EST | Freeze Warning | JAX | 33 hr |
| Feb 7, 12:27 PM EST | Frost Advisory | JAX | 20 hr |
| Feb 14, 12:59 PM EST | Wind Advisory | JAX | 29 hr |
| Feb 15, 12:09 PM EST | Mesoscale Discussion | SPC | 96 min |
| Feb 15, 12:59 PM EST | Tornado Watch | SPC | 7 hr |
| Feb 15, 3:13 PM EST | Special Weather Statement | JAX | 32 min |
| Feb 15, 3:47 PM EST | Severe Thunderstorm Warning | JAX | 28 min |
| Feb 15, 4:11 PM EST | Special Weather Statement | JAX | 34 min |
| Feb 15, 4:11 PM EST | Mesoscale Discussion | SPC | 94 min |
| Feb 21, 1:10 PM EST | Fire Weather Watch | JAX | 36 hr |
| Feb 21, 1:10 PM EST | Red Flag Warning | JAX | 32 hr |
| Feb 22, 12:42 AM EST | Freeze Watch | JAX | 24 hr |
| Feb 22, 12:42 AM EST | Freeze Warning | JAX | 31 hr |
| Feb 22, 7:33 AM EST | Wind Advisory | JAX | 10 hr |
| Feb 22, 12:02 PM EST | Cold Weather Advisory | JAX | 20 hr |
| Feb 23, 12:22 AM EST | Cold Weather Advisory | JAX | 33 hr |
| Feb 23, 12:22 AM EST | Freeze Warning | JAX | 33 hr |
| Feb 23, 1:14 AM EST | Red Flag Warning | JAX | 18 hr |
| Feb 23, 11:13 PM EST | Frost Advisory | JAX | 33 hr |
| Feb 24, 12:03 PM EST | Freeze Warning | JAX | 20 hr |
| Mar 1, 1:13 AM EST | Dense Fog Advisory | JAX | 9 hr |
| Mar 1, 7:54 PM EST | Dense Fog Advisory | JAX | 13 hr |
| Mar 3, 10:15 PM EST | Dense Fog Advisory | JAX | 12 hr |
| Mar 5, 3:50 AM EST | Dense Fog Advisory | JAX | 5 hr |
| Mar 7, 4:51 AM EST | Dense Fog Advisory | JAX | 4 hr |
| Mar 12, 8:49 AM EDT | Severe Thunderstorm Warning | JAX | 41 min |
| Mar 12, 8:50 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Mar 12, 9:30 AM EDT | Severe Thunderstorm Warning | JAX | 45 min |
| Mar 12, 9:43 AM EDT | Special Weather Statement | JAX | 32 min |
| Mar 12, 10:15 AM EDT | Special Weather Statement | JAX | 30 min |
| Mar 16, 6:00 AM EDT | Special Weather Statement | JAX | 45 min |
| Mar 16, 6:17 AM EDT | Severe Thunderstorm Warning | JAX | 28 min |
| Mar 16, 6:44 AM EDT | Special Weather Statement | JAX | 31 min |
| Mar 16, 7:59 AM EDT | Tornado Watch | SPC | 7 hr |
| Mar 16, 10:36 AM EDT | Mesoscale Discussion | SPC | 84 min |
| Mar 16, 12:49 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Mar 16, 1:11 PM EDT | Special Weather Statement | JAX | 34 min |
| Mar 16, 1:38 PM EDT | Freeze Watch | JAX | 23 hr |
| Mar 16, 1:45 PM EDT | Special Weather Statement | JAX | 30 min |
| Mar 17, 12:52 PM EDT | Freeze Warning | JAX | 20 hr |
| Mar 22, 5:35 AM EDT | Dense Fog Advisory | JAX | 4 hr |
| Mar 22, 9:47 AM EDT | Red Flag Warning | JAX | 9 hr |
| Mar 26, 4:01 AM EDT | Dense Fog Advisory | JAX | 6 hr |
| Apr 3, 5:41 PM EDT | Special Weather Statement | JAX | 34 min |
| Apr 3, 6:46 PM EDT | Special Weather Statement | JAX | 44 min |
| Apr 17, 1:36 PM EDT | Fire Weather Watch | JAX | 59 hr |
| Apr 20, 12:38 AM EDT | Red Flag Warning | JAX | 19 hr |
| Apr 20, 2:53 PM EDT | Red Flag Warning | JAX | 29 hr |
| May 2, 8:12 AM EDT | Mesoscale Discussion | SPC | 93 min |
| May 2, 8:46 AM EDT | Special Weather Statement | JAX | 29 min |
| May 9, 1:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 9, 1:50 PM EDT | Special Weather Statement | JAX | 40 min |
| May 17, 2:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 17, 4:51 PM EDT | Special Weather Statement | JAX | 24 min |
| May 17, 5:38 PM EDT | Special Weather Statement | JAX | 37 min |
| May 17, 5:53 PM EDT | Areal Flood Advisory | JAX | 112 min |
| May 17, 6:05 PM EDT | Severe Thunderstorm Warning | JAX | 25 min |
| May 22, 7:51 PM EDT | Severe Thunderstorm Warning | JAX | 24 min |
| May 24, 1:13 PM EDT | Special Weather Statement | JAX | 47 min |
| May 24, 6:25 PM EDT | Special Weather Statement | JAX | 35 min |
| May 24, 6:51 PM EDT | Special Weather Statement | JAX | 24 min |
| May 24, 7:14 PM EDT | Special Weather Statement | JAX | 31 min |
| May 24, 9:53 PM EDT | Special Weather Statement | JAX | 37 min |
| May 26, 6:32 PM EDT | Special Weather Statement | JAX | 28 min |
| May 26, 9:29 PM EDT | Special Weather Statement | JAX | 46 min |
| Jun 13, 4:33 PM EDT | Special Weather Statement | JAX | 27 min |
| Jun 14, 4:03 PM EDT | Special Weather Statement | JAX | 42 min |
| Jun 14, 4:44 PM EDT | Special Weather Statement | JAX | 46 min |
| Jun 15, 2:00 PM EDT | Special Weather Statement | JAX | 30 min |
| Jun 19, 1:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 19, 2:10 PM EDT | Severe Thunderstorm Warning | JAX | 35 min |
| Jun 20, 1:42 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 20, 4:49 PM EDT | Special Weather Statement | JAX | 26 min |
| Jun 20, 5:02 PM EDT | Special Weather Statement | JAX | 28 min |
| Jun 20, 5:22 PM EDT | Severe Thunderstorm Warning | JAX | 25 min |
| Jun 23, 4:10 PM EDT | Special Weather Statement | JAX | 35 min |
| Jun 23, 4:45 PM EDT | Special Weather Statement | JAX | 45 min |
| Jun 23, 4:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 23, 5:11 PM EDT | Severe Thunderstorm Warning | JAX | 34 min |
| Jun 29, 12:53 AM EDT | Heat Advisory | JAX | 18 hr |
| Jun 30, 3:15 PM EDT | Areal Flood Advisory | JAX | 105 min |
| Jul 5, 1:36 PM EDT | Special Weather Statement | JAX | 24 min |
| Jul 7, 12:11 PM EDT | Heat Advisory | JAX | 32 hr |
| Jul 8, 8:16 PM EDT | Heat Advisory | JAX | 24 hr |
| Jul 9, 5:25 PM EDT | Heat Advisory | JAX | 26 hr |
| Jul 10, 5:13 PM EDT | Special Weather Statement | JAX | 32 min |
| Jul 10, 6:02 PM EDT | Special Weather Statement | JAX | 28 min |
| Jul 11, 12:32 AM EDT | Heat Advisory | JAX | 18 hr |
| Jul 11, 2:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 12, 1:00 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 11:27 AM EDT | Special Weather Statement | JAX | 48 min |
| Jul 13, 11:59 AM EDT | Special Weather Statement | JAX | 46 min |
| Jul 17, 5:47 PM EDT | Special Weather Statement | JAX | 28 min |
| Jul 17, 6:01 PM EDT | Severe Thunderstorm Warning | JAX | 18 min |
| Jul 17, 6:24 PM EDT | Special Weather Statement | JAX | 36 min |
| Jul 18, 8:11 PM EDT | Areal Flood Advisory | JAX | 79 min |
| Jul 20, 3:42 PM EDT | Special Weather Statement | JAX | 48 min |
| Jul 23, 8:33 PM EDT | Special Weather Statement | JAX | 27 min |
| Jul 24, 11:52 PM EDT | Heat Advisory | JAX | 19 hr |
| Jul 26, 2:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Jul 26, 11:25 PM EDT | Heat Advisory | JAX | 21 hr |
| Jul 27, 2:06 PM EDT | Heat Advisory | JAX | 30 hr |
| Jul 28, 1:44 PM EDT | Extreme Heat Watch | JAX | 10 hr |
| Jul 28, 11:27 PM EDT | Extreme Heat Warning | JAX | 21 hr |
| Jul 29, 2:22 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 29, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 29, 4:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 5:22 PM EDT | Special Weather Statement | JAX | 38 min |
| Jul 29, 6:05 PM EDT | Special Weather Statement | JAX | 40 min |
| Jul 29, 6:07 PM EDT | Severe Thunderstorm Warning | JAX | 25 min |
| Jul 29, 6:42 PM EDT | Special Weather Statement | JAX | 33 min |
| Jul 29, 11:57 PM EDT | Heat Advisory | JAX | 19 hr |
| Jul 30, 1:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jul 30, 3:07 PM EDT | Special Weather Statement | JAX | 53 min |
| Jul 30, 3:50 PM EDT | Special Weather Statement | JAX | 40 min |
| Jul 30, 4:37 PM EDT | Special Weather Statement | JAX | 23 min |
| Jul 30, 7:20 PM EDT | Areal Flood Advisory | JAX | 115 min |
| Jul 30, 8:49 PM EDT | Areal Flood Advisory | JAX | 116 min |
| Jul 30, 8:58 PM EDT | Severe Thunderstorm Warning | JAX | 47 min |
| Aug 1, 8:51 AM EDT | Flood Watch | JAX | 59 hr |
| Aug 5, 2:32 PM EDT | Special Weather Statement | JAX | 28 min |
| Aug 6, 12:25 PM EDT | Special Weather Statement | JAX | 50 min |
| Aug 6, 4:22 PM EDT | Special Weather Statement | JAX | 38 min |
| Aug 6, 4:46 PM EDT | Areal Flood Advisory | JAX | 104 min |
| Aug 6, 4:59 PM EDT | Special Weather Statement | JAX | 31 min |
| Aug 6, 5:29 PM EDT | Special Weather Statement | JAX | 31 min |
| Aug 6, 6:14 PM EDT | Special Weather Statement | JAX | 31 min |
| Aug 6, 6:36 PM EDT | Areal Flood Advisory | JAX | 2 hr |
| Aug 6, 7:23 PM EDT | Areal Flood Advisory | JAX | 87 min |
| Aug 9, 6:09 PM EDT | Special Weather Statement | JAX | 36 min |
| Aug 9, 6:25 PM EDT | Special Weather Statement | JAX | 35 min |
| Aug 9, 6:35 PM EDT | Special Weather Statement | JAX | 55 min |
| Aug 11, 12:04 AM EDT | Heat Advisory | JAX | 19 hr |
| Aug 11, 12:44 PM EDT | Heat Advisory | JAX | 30 hr |
| Aug 12, 12:32 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 1:20 PM EDT | Heat Advisory | JAX | 31 hr |
| Aug 12, 3:02 PM EDT | Special Weather Statement | JAX | 43 min |
| Aug 12, 3:46 PM EDT | Special Weather Statement | JAX | 44 min |
| Aug 12, 4:27 PM EDT | Special Weather Statement | JAX | 48 min |
| Aug 12, 5:29 PM EDT | Severe Thunderstorm Warning | JAX | 31 min |
| Aug 13, 12:49 PM EDT | Heat Advisory | JAX | 31 hr |
| Aug 13, 5:04 PM EDT | Special Weather Statement | JAX | 26 min |
| Aug 13, 6:10 PM EDT | Special Weather Statement | JAX | 35 min |
| Aug 14, 12:14 PM EDT | Heat Advisory | JAX | 31 hr |
| Aug 14, 6:47 PM EDT | Special Weather Statement | JAX | 43 min |
| Aug 14, 6:52 PM EDT | Areal Flood Advisory | JAX | 101 min |
| Aug 14, 7:14 PM EDT | Special Weather Statement | JAX | 46 min |
| Aug 14, 7:18 PM EDT | Areal Flood Advisory | JAX | 3 hr |
| Aug 14, 8:43 PM EDT | Areal Flood Advisory | JAX | 2 hr |
| Aug 15, 11:49 AM EDT | Heat Advisory | JAX | 32 hr |
| Aug 16, 11:56 AM EDT | Heat Advisory | JAX | 32 hr |
| Aug 17, 12:33 PM EDT | Extreme Heat Warning | JAX | 31 hr |
| Aug 18, 12:32 PM EDT | Heat Advisory | JAX | 31 hr |
| Aug 18, 4:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 18, 5:25 PM EDT | Special Weather Statement | JAX | 35 min |
| Aug 18, 5:50 PM EDT | Areal Flood Advisory | JAX | 109 min |
| Aug 18, 6:06 PM EDT | Special Weather Statement | JAX | 39 min |
| Aug 18, 7:32 PM EDT | Areal Flood Advisory | JAX | 88 min |
| Aug 19, 2:20 PM EDT | Heat Advisory | JAX | 29 hr |
| Aug 19, 8:23 PM EDT | Severe Thunderstorm Warning | JAX | 37 min |
| Aug 19, 9:09 PM EDT | Areal Flood Advisory | JAX | 63 min |
| Aug 20, 12:30 PM EDT | Heat Advisory | JAX | 25 hr |
| Aug 20, 6:16 PM EDT | Severe Thunderstorm Warning | JAX | 44 min |
| Aug 20, 6:18 PM EDT | Severe Thunderstorm Warning | JAX | 57 min |
| Aug 20, 7:05 PM EDT | Special Weather Statement | JAX | 40 min |
| Aug 20, 7:12 PM EDT | Areal Flood Advisory | JAX | 62 min |
| Aug 21, 9:29 AM EDT | Areal Flood Advisory | JAX | 3 hr |
| Aug 23, 5:35 PM EDT | Special Weather Statement | JAX | 25 min |
| Aug 23, 6:22 PM EDT | Special Weather Statement | JAX | 38 min |
| Aug 24, 12:53 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 24, 2:37 PM EDT | Special Weather Statement | JAX | 38 min |
| Aug 24, 3:48 PM EDT | Severe Thunderstorm Warning | JAX | 12 min |
| Aug 24, 3:51 PM EDT | Severe Thunderstorm Warning | JAX | 24 min |
| Aug 24, 3:55 PM EDT | Severe Thunderstorm Warning | JAX | 50 min |
| Aug 24, 5:33 PM EDT | Special Weather Statement | JAX | 42 min |
| Aug 25, 12:14 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 29, 6:10 PM EDT | Severe Thunderstorm Warning | JAX | 35 min |
| Aug 29, 7:16 PM EDT | Severe Thunderstorm Warning | JAX | 29 min |
| Aug 29, 7:19 PM EDT | Areal Flood Advisory | JAX | 3 hr |
| Sep 4, 2:42 PM EDT | Special Weather Statement | JAX | 33 min |
| Sep 4, 4:23 PM EDT | Areal Flood Advisory | JAX | 3 hr |
| Sep 6, 4:01 PM EDT | Severe Thunderstorm Warning | JAX | 30 min |
| Sep 6, 5:25 PM EDT | Areal Flood Advisory | JAX | 58 min |
| Sep 6, 5:31 PM EDT | Special Weather Statement | JAX | 44 min |
| Sep 6, 6:04 PM EDT | Areal Flood Advisory | JAX | 116 min |
| Sep 6, 6:16 PM EDT | Special Weather Statement | JAX | 29 min |
| Sep 6, 6:59 PM EDT | Areal Flood Advisory | JAX | 72 min |
| Sep 6, 7:47 PM EDT | Areal Flood Advisory | JAX | 40 min |
| Sep 6, 11:18 PM EDT | Areal Flood Advisory | JAX | 3 hr |
| Sep 7, 4:10 PM EDT | Special Weather Statement | JAX | 35 min |
| Sep 21, 4:27 AM EDT | Dense Fog Advisory | JAX | 4 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 | 22 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 22 |
| Special Weather Statement | 72 |
| Flooding | |
| Flood Watch | 1 |
| Areal Flood Advisory | 23 |
| Heat | |
| Extreme Heat Warning | 2 |
| Extreme Heat Watch | 1 |
| Heat Advisory | 19 |
| Cold | |
| Extreme Cold Warning | 1 |
| Freeze Warning | 17 |
| Extreme Cold Watch | 1 |
| Freeze Watch | 12 |
| Cold Weather Advisory | 8 |
| Frost Advisory | 5 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 5 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 11 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive2025
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.