Alert archive / Georgia / Harris County
Weather alerts in Harris County, Georgia, 2026
104 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Harris County and its neighbors
Each county as a circle sized by its count in 2026. Tap one for its archive.
- Alerts
- 104
- Warnings
- 25
- Watches
- 13
- Advisories
- 27
- Busiest month
- March23 alerts
- Busiest day
- June 18, 202610 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 2 tornado warnings covering Harris County in 2026 had a tornado report inside them.
Harris County, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 1 | 50% | 0 | ||
| Severe thunderstorm warnings | 14 | 12 | 14% | 7 | 86% | 16 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2026
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Atlanta, GA: tornado warnings | 29 | 14 | 52% | 29 | 72% | 7 min |
| NWS Atlanta, GA: severe thunderstorm warnings | 353 | 220 | 38% | 907 | 72% | 18 min |
| NWS Atlanta, GA: flash flood warnings | 77 | 47 | 39% | 147 | 84% | 71 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, 11:02 PM EST | Dense Fog Advisory | FFC | 10 hr |
| Jan 5, 2:16 AM EST | Dense Fog Advisory | FFC | 9 hr |
| Jan 6, 3:16 AM EST | Dense Fog Advisory | FFC | 7 hr |
| Jan 6, 11:30 PM EST | Dense Fog Advisory | FFC | 11 hr |
| Jan 7, 11:26 PM EST | Dense Fog Advisory | FFC | 11 hr |
| Jan 10, 4:49 AM EST | Tornado Watch | SPC | 9 hr |
| Jan 10, 11:23 AM EST | Special Weather Statement | FFC | 37 min |
| Jan 10, 11:37 AM EST | Severe Thunderstorm Warning | FFC | 38 min |
| Jan 17, 2:29 AM EST | Winter Weather Advisory | FFC | 34 hr |
| Jan 24, 12:28 PM EST | Cold Weather Advisory | FFC | 46 hr |
| Jan 26, 12:54 AM EST | Cold Weather Advisory | FFC | 32 hr |
| Jan 29, 11:35 AM EST | Extreme Cold Watch | FFC | 24 hr |
| Jan 30, 3:44 AM EST | Winter Weather Advisory | FFC | 44 hr |
| Jan 30, 11:50 AM EST | Extreme Cold Warning | FFC | 49 hr |
| Feb 21, 10:34 AM EST | Mesoscale Discussion | SPC | 116 min |
| Feb 22, 12:36 AM EST | Wind Advisory | FFC | 18 hr |
| Feb 22, 12:03 PM EST | Cold Weather Advisory | FFC | 22 hr |
| Feb 23, 11:42 AM EST | Red Flag Warning | FFC | 7 hr |
| Feb 27, 10:53 PM EST | Dense Fog Advisory | FFC | 11 hr |
| Mar 1, 12:17 AM EST | Dense Fog Advisory | FFC | 10 hr |
| Mar 4, 7:27 AM EST | Dense Fog Advisory | FFC | 3 hr |
| Mar 8, 10:50 PM EDT | Dense Fog Advisory | FFC | 12 hr |
| Mar 9, 9:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Mar 12, 12:04 AM EDT | Mesoscale Discussion | SPC | 26 min |
| Mar 12, 12:31 AM EDT | Tornado Watch | SPC | 8 hr |
| Mar 12, 12:57 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 12, 4:26 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Mar 12, 4:33 AM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Mar 12, 4:38 AM EDT | Severe Thunderstorm Warning | FFC | 52 min |
| Mar 12, 5:21 AM EDT | Severe Thunderstorm Warning | FFC | 39 min |
| Mar 12, 9:15 AM EDT | Wind Advisory | FFC | 11 hr |
| Mar 15, 1:52 AM EDT | Freeze Watch | FFC | 13 hr |
| Mar 15, 2:46 PM EDT | Freeze Warning | FFC | 43 hr |
| Mar 16, 3:37 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Mar 16, 4:10 AM EDT | Tornado Watch | SPC | 8 hr |
| Mar 16, 5:54 AM EDT | Severe Thunderstorm Warning | FFC | 36 min |
| Mar 16, 6:37 AM EDT | Severe Thunderstorm Warning | FFC | 38 min |
| Mar 16, 10:24 AM EDT | Wind Advisory | FFC | 16 hr |
| Mar 17, 2:05 AM EDT | Freeze Warning | FFC | 32 hr |
| Mar 18, 1:02 PM EDT | Frost Advisory | FFC | 20 hr |
| Mar 27, 2:31 AM EDT | Fire Weather Watch | FFC | 11 hr |
| Mar 27, 1:54 PM EDT | Red Flag Warning | FFC | 30 hr |
| Mar 31, 8:00 PM EDT | Special Weather Statement | FFC | 30 min |
| Apr 1, 5:53 PM EDT | Special Weather Statement | FFC | 37 min |
| Apr 18, 1:49 PM EDT | Fire Weather Watch | FFC | 7 hr |
| Apr 18, 8:41 PM EDT | Red Flag Warning | FFC | 23 hr |
| Apr 26, 7:56 AM EDT | Dense Fog Advisory | FFC | 2 hr |
| May 5, 2:55 PM EDT | Flood Watch | FFC | 41 hr |
| May 6, 6:47 PM EDT | Tornado Watch | SPC | 7 hr |
| May 6, 9:00 PM EDT | Mesoscale Discussion | SPC | 60 min |
| May 7, 2:02 AM EDT | Flash Flood Warning | FFC | 6 hr |
| May 10, 3:26 AM EDT | Dense Fog Advisory | FFC | 7 hr |
| May 23, 1:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| May 24, 12:30 PM EDT | Flood Watch | FFC | 58 hr |
| May 24, 1:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 25, 1:23 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 1, 4:25 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Jun 1, 4:31 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 1, 4:54 PM EDT | Severe Thunderstorm Warning | FFC | 51 min |
| Jun 1, 5:37 PM EDT | Severe Thunderstorm Warning | FFC | 38 min |
| Jun 1, 6:10 PM EDT | Severe Thunderstorm Warning | FFC | 65 min |
| Jun 16, 5:30 PM EDT | Flood Watch | FFC | 3 days |
| Jun 18, 4:57 AM EDT | Wind Advisory | FFC | 21 hr |
| Jun 18, 1:46 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 18, 2:29 PM EDT | Tornado Watch | SPC | 9 hr |
| Jun 18, 3:20 PM EDT | Special Weather Statement | FFC | 25 min |
| Jun 18, 3:43 PM EDT | Special Weather Statement | FFC | 32 min |
| Jun 18, 4:48 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 18, 6:03 PM EDT | Special Weather Statement | FFC | 42 min |
| Jun 18, 6:28 PM EDT | Tornado Warning | FFC | 32 min |
| Jun 18, 6:31 PM EDT | Tornado Warning | FFC | 29 min |
| Jun 18, 6:55 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 11:52 PM EDT | Flash Flood Warning | FFC | 5 hr |
| Jun 23, 1:02 AM EDT | Special Weather Statement | FFC | 28 min |
| Jun 28, 12:42 PM EDT | Heat Advisory | FFC | 31 hr |
| Jun 29, 12:32 PM EDT | Heat Advisory | FFC | 31 hr |
| Jun 30, 2:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 5, 9:49 PM EDT | Flash Flood Warning | FFC | 6 hr |
| Jul 5, 10:29 PM EDT | Special Weather Statement | FFC | 31 min |
| Jul 9, 4:08 PM EDT | Severe Thunderstorm Warning | FFC | 37 min |
| Jul 12, 1:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Jul 25, 6:18 PM EDT | Special Weather Statement | FFC | 27 min |
| Jul 25, 6:48 PM EDT | Special Weather Statement | FFC | 42 min |
| Jul 27, 1:37 PM EDT | Heat Advisory | FFC | 30 hr |
| Aug 11, 7:37 PM EDT | Special Weather Statement | FFC | 23 min |
| Aug 12, 1:38 PM EDT | Heat Advisory | FFC | 30 hr |
| Aug 13, 1:42 PM EDT | Heat Advisory | FFC | 5 days |
| Aug 13, 4:21 PM EDT | Special Weather Statement | FFC | 24 min |
| Aug 13, 4:28 PM EDT | Severe Thunderstorm Warning | FFC | 19 min |
| Aug 14, 1:46 PM EDT | Special Weather Statement | FFC | 44 min |
| Aug 18, 12:10 AM EDT | Special Weather Statement | FFC | 35 min |
| Aug 21, 2:10 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 28, 5:36 PM EDT | Special Weather Statement | FFC | 39 min |
| Sep 2, 12:57 AM EDT | Heat Advisory | FFC | 5 days |
| Sep 6, 2:58 PM EDT | Special Weather Statement | FFC | 32 min |
| Sep 6, 3:06 PM EDT | Severe Thunderstorm Warning | FFC | 21 min |
| Sep 6, 3:27 PM EDT | Special Weather Statement | FFC | 33 min |
| Sep 6, 3:37 PM EDT | Severe Thunderstorm Warning | FFC | 28 min |
| Sep 6, 4:04 PM EDT | Severe Thunderstorm Warning | FFC | 26 min |
| Sep 6, 11:58 PM EDT | Special Weather Statement | FFC | 32 min |
| Sep 7, 12:29 AM EDT | Special Weather Statement | FFC | 31 min |
| Sep 11, 1:48 PM EDT | Special Weather Statement | FFC | 27 min |
| Sep 19, 2:09 PM EDT | Special Weather Statement | FFC | 36 min |
| Sep 19, 2:59 PM EDT | Special Weather Statement | FFC | 31 min |
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 | 14 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 1 |
| Tornado Watch | 5 |
| Mesoscale Discussion | 17 |
| Special Weather Statement | 22 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flood Watch | 3 |
| Winter | |
| Winter Weather Advisory | 2 |
| Heat | |
| Heat Advisory | 6 |
| Cold | |
| Extreme Cold Warning | 1 |
| Freeze Warning | 2 |
| Extreme Cold Watch | 1 |
| Freeze Watch | 1 |
| Cold Weather Advisory | 3 |
| Frost Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 3 |
| 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.