Alert archive / Georgia / Harris County
Weather alerts in Harris County, Georgia, 2010
131 weather alerts in 2010, 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 2010. Tap one for its archive.
- Alerts
- 131
- Warnings
- 44
- Watches
- 48
- Advisories
- 14
- Busiest month
- October26 alerts
- Busiest day
- January 24, 20105 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 1 tornado warnings covering Harris County in 2010 had a tornado report inside them.
Harris County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 7 | 4 | 43% | 5 | 40% | 15 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Atlanta, GA: tornado warnings | 37 | 3 | 92% | 11 | 27% | 14 min |
| NWS Atlanta, GA: severe thunderstorm warnings | 357 | 181 | 49% | 495 | 59% | 17 min |
| NWS Atlanta, GA: flash flood warnings | 22 | 9 | 59% | 21 | 86% | 75 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 10, 4:42 AM EST | Fire Weather Watch | FFC | 11 hr |
| Jan 10, 3:30 PM EST | Red Flag Warning | FFC | 27 hr |
| Jan 12, 4:41 AM EST | Fire Weather Watch | FFC | 23 hr |
| Jan 15, 2:16 PM EST | Flood Watch | FFC | 35 hr |
| Jan 16, 7:47 AM EST | Wind Advisory | FFC | 18 hr |
| Jan 20, 3:12 PM EST | Flood Watch | FFC | 22 hr |
| Jan 21, 8:26 AM EST | Severe Thunderstorm Warning | FFC | 49 min |
| Jan 21, 7:26 PM EST | Mesoscale Discussion | SPC | 64 min |
| Jan 23, 3:50 AM EST | Flood Watch | FFC | 42 hr |
| Jan 23, 3:41 PM EST | Wind Advisory | FFC | 27 hr |
| Jan 24, 11:25 AM EST | Mesoscale Discussion | SPC | 65 min |
| Jan 24, 12:26 PM EST | Tornado Watch | SPC | 5 hr |
| Jan 24, 2:51 PM EST | Mesoscale Discussion | SPC | 54 min |
| Jan 24, 3:05 PM EST | Tornado Warning | FFC | 40 min |
| Jan 24, 5:18 PM EST | Tornado Watch | SPC | 7 hr |
| Jan 25, 3:50 AM EST | Wind Advisory | FFC | 14 hr |
| Feb 4, 3:21 AM EST | Wind Advisory | FFC | 31 hr |
| Feb 4, 3:34 AM EST | Flood Watch | FFC | 39 hr |
| Feb 9, 4:16 AM EST | Wind Advisory | FFC | 48 hr |
| Feb 11, 9:45 AM EST | Winter Storm Watch | FFC | 5 hr |
| Feb 11, 3:04 PM EST | Winter Storm Warning | FFC | 31 hr |
| Feb 12, 12:46 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 14, 3:57 AM EST | Winter Weather Advisory | FFC | 29 hr |
| Feb 20, 4:29 AM EST | Red Flag Warning | FFC | 15 hr |
| Feb 24, 1:58 PM EST | Fire Weather Watch | FFC | 13 hr |
| Feb 24, 2:09 PM EST | Fire Weather Watch | FFC | 25 hr |
| Feb 25, 3:15 AM EST | Red Flag Warning | FFC | 16 hr |
| Feb 25, 2:42 PM EST | Fire Weather Watch | FFC | 37 hr |
| Feb 25, 2:42 PM EST | Red Flag Warning | FFC | 28 hr |
| Feb 26, 3:47 AM EST | Red Flag Warning | FFC | 39 hr |
| Mar 4, 3:19 PM EST | Fire Weather Watch | FFC | 25 hr |
| Mar 4, 3:19 PM EST | Red Flag Warning | FFC | 29 hr |
| Mar 5, 4:36 PM EST | Fire Weather Watch | FFC | 22 hr |
| Mar 5, 4:36 PM EST | Red Flag Warning | FFC | 27 hr |
| Mar 6, 2:09 PM EST | Red Flag Warning | FFC | 30 hr |
| Mar 7, 3:21 AM EST | Fire Weather Watch | FFC | 11 hr |
| Mar 7, 2:09 PM EST | Red Flag Warning | FFC | 29 hr |
| Mar 12, 12:07 PM EST | Mesoscale Discussion | SPC | 53 min |
| Mar 29, 3:48 PM EDT | Fire Weather Watch | FFC | 23 hr |
| Mar 30, 3:05 PM EDT | Fire Weather Watch | FFC | 24 hr |
| Mar 30, 3:05 PM EDT | Red Flag Warning | FFC | 29 hr |
| Mar 31, 2:56 PM EDT | Red Flag Warning | FFC | 29 hr |
| Apr 2, 4:24 AM EDT | Red Flag Warning | FFC | 16 hr |
| Apr 8, 5:04 AM EDT | Fire Weather Watch | FFC | 10 hr |
| Apr 8, 5:04 AM EDT | Fire Weather Watch | FFC | 47 hr |
| Apr 8, 12:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Apr 10, 3:51 AM EDT | Red Flag Warning | FFC | 16 hr |
| Apr 12, 2:23 AM EDT | Red Flag Warning | FFC | 18 hr |
| Apr 16, 2:47 PM EDT | Fire Weather Watch | FFC | 38 hr |
| Apr 17, 3:15 PM EDT | Red Flag Warning | FFC | 30 hr |
| Apr 24, 6:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Apr 24, 10:58 PM EDT | Mesoscale Discussion | SPC | 32 min |
| Apr 24, 11:46 PM EDT | Tornado Watch | SPC | 7 hr |
| Apr 25, 1:17 AM EDT | Tornado Watch | SPC | 8 hr |
| May 2, 4:15 AM EDT | Flash Flood Watch | FFC | 35 hr |
| May 3, 2:33 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| May 3, 5:20 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 8, 3:18 AM EDT | Red Flag Warning | FFC | 17 hr |
| May 8, 3:05 PM EDT | Fire Weather Watch | FFC | 12 hr |
| May 9, 3:34 AM EDT | Red Flag Warning | FFC | 16 hr |
| May 21, 10:46 AM EDT | Mesoscale Discussion | SPC | 59 min |
| May 21, 12:50 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 21, 3:10 PM EDT | Mesoscale Discussion | SPC | 65 min |
| May 29, 11:25 AM EDT | Mesoscale Discussion | SPC | 65 min |
| May 29, 12:15 PM EDT | Mesoscale Discussion | SPC | 30 min |
| May 29, 12:57 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 29, 4:53 PM EDT | Mesoscale Discussion | SPC | 97 min |
| May 30, 5:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 5, 3:24 PM EDT | Severe Thunderstorm Warning | FFC | 51 min |
| Jun 17, 7:30 PM EDT | Severe Thunderstorm Warning | FFC | 45 min |
| Jun 19, 1:13 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 19, 3:48 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Jun 27, 1:33 PM EDT | Severe Thunderstorm Warning | FFC | 42 min |
| Jul 9, 5:40 PM EDT | Severe Thunderstorm Warning | FFC | 50 min |
| Jul 21, 3:45 PM EDT | Heat Advisory | FFC | 52 hr |
| Jul 23, 3:09 PM EDT | Heat Advisory | FFC | 13 days |
| Jul 29, 2:52 PM EDT | Excessive Heat Warning | FFC | 7 days |
| Aug 1, 3:13 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 5, 3:36 PM EDT | Heat Advisory | FFC | 26 hr |
| Aug 6, 1:25 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Aug 6, 4:59 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Aug 11, 3:13 PM EDT | Heat Advisory | FFC | 52 hr |
| Sep 4, 4:13 AM EDT | Fire Weather Watch | FFC | 24 hr |
| Sep 4, 4:13 AM EDT | Red Flag Warning | FFC | 15 hr |
| Sep 5, 4:13 AM EDT | Red Flag Warning | FFC | 15 hr |
| Oct 4, 3:43 PM EDT | Fire Weather Watch | FFC | 24 hr |
| Oct 5, 3:17 PM EDT | Red Flag Warning | FFC | 28 hr |
| Oct 6, 4:27 AM EDT | Fire Weather Watch | FFC | 10 hr |
| Oct 6, 2:38 PM EDT | Red Flag Warning | FFC | 28 hr |
| Oct 13, 4:41 AM EDT | Fire Weather Watch | FFC | 23 hr |
| Oct 13, 4:41 AM EDT | Fire Weather Watch | FFC | 35 hr |
| Oct 14, 3:18 PM EDT | Red Flag Warning | FFC | 29 hr |
| Oct 15, 3:57 AM EDT | Fire Weather Watch | FFC | 12 hr |
| Oct 15, 3:53 PM EDT | Fire Weather Watch | FFC | 23 hr |
| Oct 15, 3:53 PM EDT | Red Flag Warning | FFC | 28 hr |
| Oct 16, 2:26 PM EDT | Red Flag Warning | FFC | 29 hr |
| Oct 17, 4:11 AM EDT | Fire Weather Watch | FFC | 23 hr |
| Oct 18, 2:50 AM EDT | Red Flag Warning | FFC | 16 hr |
| Oct 20, 3:44 AM EDT | Fire Weather Watch | FFC | 24 hr |
| Oct 21, 3:18 AM EDT | Fire Weather Watch | FFC | 13 hr |
| Oct 21, 3:18 AM EDT | Red Flag Warning | FFC | 17 hr |
| Oct 21, 3:53 PM EDT | Fire Weather Watch | FFC | 36 hr |
| Oct 21, 3:53 PM EDT | Red Flag Warning | FFC | 27 hr |
| Oct 22, 4:06 PM EDT | Red Flag Warning | FFC | 27 hr |
| Oct 25, 2:33 AM EDT | Tornado Watch | SPC | 8 hr |
| Oct 25, 5:07 AM EDT | Mesoscale Discussion | SPC | 113 min |
| Oct 25, 7:49 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Oct 27, 12:49 PM EDT | Tornado Watch | SPC | 7 hr |
| Oct 27, 3:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Oct 27, 7:40 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Oct 27, 9:17 PM EDT | Severe Thunderstorm Warning | FFC | 25 min |
| Nov 4, 3:16 AM EDT | Freeze Watch | FFC | 12 hr |
| Nov 4, 3:17 PM EDT | Freeze Warning | FFC | 43 hr |
| Nov 5, 3:32 AM EDT | Fire Weather Watch | FFC | 24 hr |
| Nov 5, 3:44 AM EDT | Freeze Watch | FFC | 23 hr |
| Nov 6, 3:11 AM EDT | Freeze Warning | FFC | 31 hr |
| Nov 6, 3:30 AM EDT | Fire Weather Watch | FFC | 13 hr |
| Nov 7, 2:34 AM EST | Freeze Warning | FFC | 30 hr |
| Nov 7, 2:58 PM EST | Red Flag Warning | FFC | 26 hr |
| Nov 8, 2:55 PM EST | Red Flag Warning | FFC | 27 hr |
| Nov 30, 8:00 AM EST | Mesoscale Discussion | SPC | 60 min |
| Nov 30, 8:43 AM EST | Tornado Watch | SPC | 8 hr |
| Nov 30, 10:38 AM EST | Mesoscale Discussion | SPC | 97 min |
| Nov 30, 1:17 PM EST | Mesoscale Discussion | SPC | 118 min |
| Nov 30, 2:34 PM EST | Tornado Watch | SPC | 7 hr |
| Dec 4, 11:59 PM EST | Wind Advisory | FFC | 16 hr |
| Dec 6, 3:07 AM EST | Fire Weather Watch | FFC | 11 hr |
| Dec 7, 3:01 PM EST | Red Flag Warning | FFC | 11 hr |
| Dec 11, 4:11 PM EST | Wind Advisory | FFC | 51 hr |
| Dec 24, 3:11 PM EST | Winter Weather Advisory | FFC | 36 hr |
| Dec 25, 4:11 PM EST | Wind Advisory | FFC | 26 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 | 7 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 4 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 25 |
| Flooding | |
| Flash Flood Watch | 1 |
| Flood Watch | 4 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 2 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 2 |
| Wind and dust | |
| Wind Advisory | 8 |
| Fire | |
| Red Flag Warning | 31 |
| Fire Weather Watch | 28 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20092011
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.