Alert archive / Georgia / Harris County
Weather alerts in Harris County, Georgia, 2023
173 weather alerts in 2023, 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 2023. Tap one for its archive.
- Alerts
- 173
- Warnings
- 47
- Watches
- 29
- Advisories
- 31
- Busiest month
- August47 alerts
- Busiest day
- March 26, 202313 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 1 tornado warnings covering Harris County in 2023 had a tornado report inside them.
Harris County, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 1 | 0% | 0 | ||
| Severe thunderstorm warnings | 32 | 17 | 47% | 17 | 35% | 16 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2023
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Atlanta, GA: tornado warnings | 34 | 11 | 68% | 61 | 57% | 16 min |
| NWS Atlanta, GA: severe thunderstorm warnings | 605 | 325 | 46% | 1,761 | 70% | 21 min |
| NWS Atlanta, GA: flash flood warnings | 42 | 19 | 55% | 123 | 72% | 169 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 |
|---|---|---|---|
| Dec 31, 9:27 PM EST | Dense Fog Advisory | FFC | 14 hr |
| Jan 1, 7:52 PM EST | Dense Fog Advisory | FFC | 14 hr |
| Jan 3, 2:19 AM EST | Flood Watch | FFC | 33 hr |
| Jan 3, 1:29 PM EST | Mesoscale Discussion | SPC | 91 min |
| Jan 3, 1:56 PM EST | Tornado Watch | SPC | 7 hr |
| Jan 3, 4:21 PM EST | Severe Thunderstorm Warning | FFC | 39 min |
| Jan 4, 3:06 AM EST | Mesoscale Discussion | SPC | 114 min |
| Jan 4, 3:59 AM EST | Tornado Watch | SPC | 7 hr |
| Jan 4, 5:33 AM EST | Severe Thunderstorm Warning | FFC | 42 min |
| Jan 10, 6:54 AM EST | Special Weather Statement | FFC | 81 min |
| Jan 12, 3:39 AM EST | Wind Advisory | FFC | 19 hr |
| Jan 12, 11:52 AM EST | Mesoscale Discussion | SPC | 53 min |
| Jan 12, 1:06 PM EST | Tornado Watch | SPC | 8 hr |
| Jan 12, 3:19 PM EST | Severe Thunderstorm Warning | FFC | 41 min |
| Jan 12, 4:04 PM EST | Severe Thunderstorm Warning | FFC | 41 min |
| Jan 12, 4:44 PM EST | Special Weather Statement | FFC | 31 min |
| Jan 17, 6:42 PM EST | Dense Fog Advisory | FFC | 18 hr |
| Jan 24, 2:59 AM EST | Wind Advisory | FFC | 35 hr |
| Jan 30, 8:38 PM EST | Dense Fog Advisory | FFC | 15 hr |
| Feb 11, 3:56 AM EST | Wind Advisory | FFC | 24 hr |
| Mar 2, 5:43 AM EST | Wind Advisory | FFC | 40 hr |
| Mar 12, 10:14 AM EDT | Special Weather Statement | FFC | 31 min |
| Mar 13, 4:04 AM EDT | Freeze Watch | FFC | 31 hr |
| Mar 13, 4:04 AM EDT | Freeze Warning | FFC | 31 hr |
| Mar 14, 11:04 AM EDT | Freeze Warning | FFC | 24 hr |
| Mar 14, 3:30 PM EDT | Freeze Watch | FFC | 20 hr |
| Mar 15, 11:06 AM EDT | Freeze Warning | FFC | 22 hr |
| Mar 17, 10:16 AM EDT | Freeze Watch | FFC | 17 hr |
| Mar 18, 3:36 AM EDT | Freeze Watch | FFC | 23 hr |
| Mar 18, 3:36 AM EDT | Freeze Warning | FFC | 31 hr |
| Mar 19, 3:04 AM EDT | Freeze Warning | FFC | 33 hr |
| Mar 20, 2:44 PM EDT | Frost Advisory | FFC | 18 hr |
| Mar 23, 6:13 AM EDT | Dense Fog Advisory | FFC | 4 hr |
| Mar 26, 2:46 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Mar 26, 3:22 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Mar 26, 4:11 AM EDT | Severe Thunderstorm Warning | FFC | 64 min |
| Mar 26, 5:01 AM EDT | Mesoscale Discussion | SPC | 119 min |
| Mar 26, 6:52 AM EDT | Tornado Warning | FFC | 38 min |
| Mar 26, 7:19 AM EDT | Mesoscale Discussion | SPC | 56 min |
| Mar 26, 7:34 AM EDT | Tornado Watch | SPC | 5 hr |
| Mar 26, 8:56 AM EDT | Flood Watch | FFC | 29 hr |
| Mar 26, 10:29 AM EDT | Mesoscale Discussion | SPC | 91 min |
| Mar 26, 5:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Mar 26, 7:10 PM EDT | Special Weather Statement | FFC | 35 min |
| Mar 26, 7:19 PM EDT | Severe Thunderstorm Warning | FFC | 41 min |
| Mar 26, 7:52 PM EDT | Severe Thunderstorm Warning | FFC | 38 min |
| Mar 26, 8:15 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Mar 26, 11:06 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Mar 26, 11:57 PM EDT | Severe Thunderstorm Warning | FFC | 78 min |
| Mar 27, 4:49 AM EDT | Special Weather Statement | FFC | 26 min |
| Mar 27, 5:14 AM EDT | Severe Thunderstorm Warning | FFC | 31 min |
| Mar 27, 5:44 AM EDT | Severe Thunderstorm Warning | FFC | 31 min |
| Mar 27, 6:08 AM EDT | Severe Thunderstorm Warning | FFC | 52 min |
| Mar 27, 6:28 AM EDT | Mesoscale Discussion | SPC | 62 min |
| Mar 27, 6:58 AM EDT | Severe Thunderstorm Warning | FFC | 32 min |
| Mar 27, 10:14 AM EDT | Special Weather Statement | FFC | 46 min |
| Mar 28, 1:50 AM EDT | Dense Fog Advisory | FFC | 7 hr |
| Apr 4, 5:27 AM EDT | Dense Fog Advisory | FFC | 6 hr |
| Apr 13, 12:42 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 13, 2:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 13, 4:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Apr 13, 6:26 PM EDT | Severe Thunderstorm Warning | FFC | 49 min |
| Apr 28, 2:05 AM EDT | Dense Fog Advisory | FFC | 7 hr |
| May 2, 3:55 AM EDT | Wind Advisory | FFC | 16 hr |
| May 2, 9:35 AM EDT | Red Flag Warning | FFC | 10 hr |
| May 3, 3:41 AM EDT | Red Flag Warning | FFC | 16 hr |
| May 9, 4:38 PM EDT | Special Weather Statement | FFC | 37 min |
| May 10, 6:19 PM EDT | Special Weather Statement | FFC | 26 min |
| May 10, 6:24 PM EDT | Special Weather Statement | FFC | 36 min |
| May 12, 11:31 PM EDT | Dense Fog Advisory | FFC | 10 hr |
| May 16, 6:04 PM EDT | Special Weather Statement | FFC | 26 min |
| May 16, 6:34 PM EDT | Special Weather Statement | FFC | 41 min |
| May 17, 3:48 PM EDT | Special Weather Statement | FFC | 27 min |
| Jun 4, 3:19 PM EDT | Special Weather Statement | FFC | 26 min |
| Jun 4, 3:39 PM EDT | Special Weather Statement | FFC | 36 min |
| Jun 14, 3:47 AM EDT | Flood Watch | FFC | 39 hr |
| Jun 14, 4:07 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Jun 14, 5:11 AM EDT | Special Weather Statement | FFC | 34 min |
| Jun 14, 5:46 AM EDT | Special Weather Statement | FFC | 29 min |
| Jun 14, 5:54 AM EDT | Special Weather Statement | FFC | 36 min |
| Jun 14, 6:29 AM EDT | Special Weather Statement | FFC | 31 min |
| Jun 14, 6:43 AM EDT | Special Weather Statement | FFC | 32 min |
| Jun 14, 8:44 AM EDT | Flash Flood Warning | FFC | 3 hr |
| Jun 14, 12:17 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 14, 2:04 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 17, 6:53 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 19, 4:44 AM EDT | Special Weather Statement | FFC | 31 min |
| Jun 25, 6:10 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 25, 6:26 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 25, 7:47 PM EDT | Severe Thunderstorm Warning | FFC | 43 min |
| Jun 25, 8:18 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Jun 25, 8:28 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 30, 3:21 PM EDT | Heat Advisory | FFC | 53 hr |
| Jun 30, 3:31 PM EDT | Severe Thunderstorm Warning | FFC | 44 min |
| Jun 30, 3:41 PM EDT | Severe Thunderstorm Warning | FFC | 49 min |
| Jul 1, 8:26 PM EDT | Special Weather Statement | FFC | 34 min |
| Jul 2, 6:18 PM EDT | Special Weather Statement | FFC | 27 min |
| Jul 2, 7:53 PM EDT | Special Weather Statement | FFC | 37 min |
| Jul 2, 8:09 PM EDT | Severe Thunderstorm Warning | FFC | 51 min |
| Jul 19, 4:15 PM EDT | Special Weather Statement | FFC | 30 min |
| Jul 19, 9:15 PM EDT | Heat Advisory | FFC | 23 hr |
| Jul 21, 3:28 AM EDT | Heat Advisory | FFC | 17 hr |
| Jul 21, 5:55 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 21, 6:36 PM EDT | Special Weather Statement | FFC | 24 min |
| Jul 21, 6:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jul 21, 7:05 PM EDT | Special Weather Statement | FFC | 25 min |
| Jul 21, 7:21 PM EDT | Severe Thunderstorm Warning | FFC | 39 min |
| Jul 29, 2:37 PM EDT | Heat Advisory | FFC | 29 min |
| Jul 29, 3:06 PM EDT | Heat Advisory | FFC | 27 hr |
| Jul 30, 2:35 PM EDT | Special Weather Statement | FFC | 40 min |
| Jul 30, 2:53 PM EDT | Severe Thunderstorm Warning | FFC | 52 min |
| Aug 3, 1:50 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Aug 3, 3:05 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 3, 4:24 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 3, 6:03 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Aug 3, 6:42 PM EDT | Severe Thunderstorm Warning | FFC | 48 min |
| Aug 6, 11:35 AM EDT | Heat Advisory | FFC | 8 hr |
| Aug 6, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 6, 4:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Aug 6, 4:51 PM EDT | Severe Thunderstorm Warning | FFC | 39 min |
| Aug 6, 5:24 PM EDT | Severe Thunderstorm Warning | FFC | 36 min |
| Aug 7, 3:16 AM EDT | Heat Advisory | FFC | 17 hr |
| Aug 7, 4:30 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 8, 2:01 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 8, 3:07 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 9, 5:16 AM EDT | Dense Fog Advisory | FFC | 5 hr |
| Aug 9, 7:50 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Aug 9, 9:08 PM EDT | Severe Thunderstorm Warning | FFC | 52 min |
| Aug 9, 9:40 PM EDT | Severe Thunderstorm Warning | FFC | 35 min |
| Aug 9, 10:01 PM EDT | Severe Thunderstorm Warning | FFC | 44 min |
| Aug 9, 10:05 PM EDT | Severe Thunderstorm Warning | FFC | 40 min |
| Aug 9, 10:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Aug 9, 10:37 PM EDT | Severe Thunderstorm Warning | FFC | 38 min |
| Aug 10, 9:03 AM EDT | Special Weather Statement | FFC | 27 min |
| Aug 11, 8:31 AM EDT | Special Weather Statement | FFC | 44 min |
| Aug 11, 11:31 AM EDT | Special Weather Statement | FFC | 29 min |
| Aug 11, 12:54 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 3:10 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 11, 3:31 PM EDT | Excessive Heat Watch | FFC | 23 hr |
| Aug 11, 3:31 PM EDT | Heat Advisory | FFC | 28 hr |
| Aug 12, 2:45 PM EDT | Excessive Heat Watch | FFC | 23 hr |
| Aug 12, 2:45 PM EDT | Excessive Heat Warning | FFC | 29 hr |
| Aug 12, 4:31 PM EDT | Special Weather Statement | FFC | 29 min |
| Aug 12, 6:13 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 7:03 PM EDT | Severe Thunderstorm Warning | FFC | 23 min |
| Aug 13, 2:12 PM EDT | Excessive Heat Warning | FFC | 30 hr |
| Aug 14, 2:29 PM EDT | Heat Advisory | FFC | 30 hr |
| Aug 15, 1:50 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Aug 15, 4:07 PM EDT | Special Weather Statement | FFC | 23 min |
| Aug 15, 4:27 PM EDT | Severe Thunderstorm Warning | FFC | 28 min |
| Aug 15, 4:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Aug 20, 2:34 PM EDT | Heat Advisory | FFC | 31 hr |
| Aug 21, 4:15 AM EDT | Heat Advisory | FFC | 42 hr |
| Aug 22, 2:25 PM EDT | Heat Advisory | FFC | 30 hr |
| Aug 24, 2:15 PM EDT | Heat Advisory | FFC | 3 days |
| Aug 28, 4:07 PM EDT | Severe Thunderstorm Warning | FFC | 38 min |
| Aug 29, 5:28 PM EDT | Special Weather Statement | FFC | 32 min |
| Aug 29, 6:02 PM EDT | Special Weather Statement | FFC | 28 min |
| Oct 6, 3:32 AM EDT | Fire Weather Watch | FFC | 23 hr |
| Oct 7, 2:53 AM EDT | Red Flag Warning | FFC | 17 hr |
| Oct 31, 4:00 AM EDT | Freeze Watch | FFC | 24 hr |
| Oct 31, 4:00 AM EDT | Freeze Warning | FFC | 30 hr |
| Oct 31, 2:23 PM EDT | Fire Weather Watch | FFC | 14 hr |
| Nov 1, 3:50 AM EDT | Freeze Warning | FFC | 30 hr |
| Nov 1, 3:59 AM EDT | Red Flag Warning | FFC | 16 hr |
| Nov 2, 2:36 PM EDT | Frost Advisory | FFC | 19 hr |
| Nov 21, 2:52 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 4, 3:40 AM EST | Dense Fog Advisory | FFC | 5 hr |
| Dec 10, 12:53 AM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 10, 1:58 AM EST | Tornado Watch | SPC | 9 hr |
| Dec 10, 3:02 AM EST | Mesoscale Discussion | SPC | 88 min |
| Dec 10, 5:00 AM EST | Mesoscale Discussion | SPC | 90 min |
| Dec 10, 6:07 AM EST | Special Weather Statement | FFC | 38 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 | 32 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 10 |
| Tornado Watch | 7 |
| Mesoscale Discussion | 31 |
| Special Weather Statement | 35 |
| Flooding | |
| Flash Flood Warning | 1 |
| Flood Watch | 3 |
| Heat | |
| Excessive Heat Warning | 2 |
| Excessive Heat Watch | 2 |
| Heat Advisory | 13 |
| Cold | |
| Freeze Warning | 7 |
| Freeze Watch | 5 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 4 |
| 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 archive20222024
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.