Alert archive / Mississippi / Grenada County
Weather alerts in Grenada County, Mississippi, 2010
168 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Grenada County and its neighbors
Each county as a circle sized by its count in 2010. Tap one for its archive.
- Alerts
- 168
- Warnings
- 31
- Watches
- 37
- Advisories
- 58
- Busiest month
- October28 alerts
- Busiest day
- May 2, 201011 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 2 tornado warnings covering Grenada County in 2010 had a tornado report inside them.
Grenada County, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 10 | 6 | 40% | 7 | 86% | 12 min |
| Flash flood warnings | 4 | 2 | 50% | 1 | 100% | 12 min |
Each office's whole area, 2010
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Jackson, MS: tornado warnings | 111 | 29 | 74% | 97 | 89% | 32 min |
| NWS Jackson, MS: severe thunderstorm warnings | 620 | 337 | 46% | 707 | 75% | 20 min |
| NWS Jackson, MS: flash flood warnings | 111 | 54 | 51% | 102 | 91% | 60 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 3, 4:29 AM CST | Hard Freeze Watch | JAN | 24 hr |
| Jan 3, 3:04 PM CST | Hard Freeze Warning | JAN | 66 hr |
| Jan 4, 8:27 AM CST | Winter Weather Advisory | JAN | 7 hr |
| Jan 4, 10:31 AM CST | Lake Wind Advisory | JAN | 7 hr |
| Jan 5, 2:49 PM CST | Hard Freeze Watch | JAN | 38 hr |
| Jan 6, 5:13 AM CST | Winter Storm Watch | JAN | 9 hr |
| Jan 6, 5:13 AM CST | Winter Weather Advisory | JAN | 32 hr |
| Jan 6, 2:40 PM CST | Winter Storm Warning | JAN | 23 hr |
| Jan 7, 12:44 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 7, 4:24 AM CST | Hard Freeze Warning | JAN | 4 days |
| Jan 7, 4:52 AM CST | Wind Chill Advisory | JAN | 35 hr |
| Jan 8, 8:34 PM CST | Wind Chill Advisory | JAN | 13 hr |
| Jan 17, 9:36 PM CST | Dense Fog Advisory | JAN | 11 hr |
| Jan 19, 2:53 PM CST | Flash Flood Watch | JAN | 39 hr |
| Jan 21, 4:49 AM CST | Lake Wind Advisory | JAN | 11 hr |
| Jan 22, 3:22 PM CST | Lake Wind Advisory | JAN | 35 hr |
| Jan 23, 4:41 AM CST | Wind Advisory | JAN | 22 hr |
| Jan 24, 2:50 PM CST | Lake Wind Advisory | JAN | 26 hr |
| Jan 25, 4:25 AM CST | Wind Advisory | JAN | 13 hr |
| Jan 26, 4:19 AM CST | Lake Wind Advisory | JAN | 13 hr |
| Jan 28, 3:48 PM CST | Lake Wind Advisory | JAN | 31 hr |
| Jan 29, 5:38 AM CST | Winter Weather Advisory | JAN | 24 hr |
| Jan 30, 3:34 AM CST | Lake Wind Advisory | JAN | 15 hr |
| Feb 6, 3:33 AM CST | Lake Wind Advisory | JAN | 14 hr |
| Feb 8, 3:46 PM CST | Wind Advisory | JAN | 26 hr |
| Feb 11, 4:41 AM CST | Winter Weather Advisory | JAN | 33 hr |
| Feb 14, 4:24 AM CST | Winter Weather Advisory | JAN | 24 hr |
| Feb 14, 3:04 PM CST | Lake Wind Advisory | JAN | 24 hr |
| Feb 21, 1:33 PM CST | Lake Wind Advisory | JAN | 4 hr |
| Feb 21, 1:33 PM CST | Lake Wind Advisory | JAN | 26 hr |
| Feb 24, 4:24 AM CST | Lake Wind Advisory | JAN | 14 hr |
| Mar 1, 4:31 AM CST | Lake Wind Advisory | JAN | 37 hr |
| Mar 9, 3:55 AM CST | Lake Wind Advisory | JAN | 14 hr |
| Mar 10, 12:21 PM CST | Mesoscale Discussion | SPC | 84 min |
| Mar 10, 3:24 PM CST | Mesoscale Discussion | SPC | 66 min |
| Mar 10, 5:15 PM CST | Mesoscale Discussion | SPC | 60 min |
| Mar 10, 7:24 PM CST | Tornado Watch | SPC | 8 hr |
| Mar 11, 1:21 AM CST | Mesoscale Discussion | SPC | 54 min |
| Mar 11, 1:42 AM CST | Tornado Watch | SPC | 4 hr |
| Mar 12, 4:08 AM CST | Lake Wind Advisory | JAN | 14 hr |
| Mar 20, 3:00 PM CDT | Lake Wind Advisory | JAN | 28 hr |
| Mar 23, 2:40 AM CDT | Dense Fog Advisory | JAN | 6 hr |
| Mar 24, 4:13 PM CDT | Lake Wind Advisory | JAN | 33 hr |
| Mar 26, 2:34 PM CDT | Lake Wind Advisory | JAN | 33 hr |
| Mar 27, 9:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Mar 28, 3:25 AM CDT | Lake Wind Advisory | JAN | 15 hr |
| Apr 1, 3:42 PM CDT | Lake Wind Advisory | JAN | 33 hr |
| Apr 3, 1:18 AM CDT | Mesoscale Discussion | SPC | 57 min |
| Apr 3, 2:59 AM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 3, 3:45 AM CDT | Severe Thunderstorm Warning | JAN | 45 min |
| Apr 6, 4:34 AM CDT | Lake Wind Advisory | JAN | 14 hr |
| Apr 6, 9:48 PM CDT | Lake Wind Advisory | JAN | 21 hr |
| Apr 23, 12:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 23, 12:51 PM CDT | Tornado Watch | SPC | 9 hr |
| Apr 23, 3:47 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Apr 23, 6:31 PM CDT | Mesoscale Discussion | SPC | 29 min |
| Apr 23, 7:39 PM CDT | Mesoscale Discussion | SPC | 36 min |
| Apr 24, 3:31 AM CDT | Wind Advisory | JAN | 13 hr |
| Apr 24, 3:37 AM CDT | Flash Flood Watch | JAN | 12 hr |
| Apr 24, 6:00 AM CDT | Tornado Watch | SPC | 6 hr |
| Apr 24, 9:31 AM CDT | Mesoscale Discussion | SPC | 59 min |
| Apr 24, 11:31 AM CDT | Tornado Watch | SPC | 8 hr |
| Apr 24, 2:01 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 30, 3:08 PM CDT | Flash Flood Watch | JAN | 57 hr |
| May 1, 2:25 AM CDT | Mesoscale Discussion | SPC | 95 min |
| May 1, 3:11 AM CDT | Tornado Watch | SPC | 8 hr |
| May 1, 6:17 AM CDT | Mesoscale Discussion | SPC | 88 min |
| May 1, 7:48 AM CDT | Mesoscale Discussion | SPC | 57 min |
| May 1, 9:52 AM CDT | Tornado Watch | SPC | 8 hr |
| May 1, 5:04 PM CDT | Mesoscale Discussion | SPC | 56 min |
| May 1, 7:30 PM CDT | Mesoscale Discussion | SPC | 30 min |
| May 2, 2:33 AM CDT | Mesoscale Discussion | SPC | 87 min |
| May 2, 3:36 AM CDT | Tornado Watch | SPC | 8 hr |
| May 2, 6:37 AM CDT | Mesoscale Discussion | SPC | 113 min |
| May 2, 7:34 AM CDT | Severe Thunderstorm Warning | JAN | 28 min |
| May 2, 7:48 AM CDT | Flash Flood Warning | JAN | 117 min |
| May 2, 8:01 AM CDT | Tornado Watch | SPC | 7 hr |
| May 2, 8:30 AM CDT | Severe Thunderstorm Warning | JAN | 60 min |
| May 2, 8:34 AM CDT | Tornado Warning | JAN | 34 min |
| May 2, 9:27 AM CDT | Severe Thunderstorm Warning | JAN | 63 min |
| May 2, 10:15 AM CDT | Flash Flood Warning | JAN | 2 hr |
| May 3, 12:08 AM CDT | Dense Fog Advisory | JAN | 9 hr |
| May 15, 12:04 PM CDT | Mesoscale Discussion | SPC | 116 min |
| May 16, 4:48 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 16, 5:05 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| May 16, 7:43 PM CDT | Mesoscale Discussion | SPC | 62 min |
| May 20, 8:57 AM CDT | Mesoscale Discussion | SPC | 63 min |
| May 20, 10:28 AM CDT | Severe Thunderstorm Watch | SPC | 12 hr |
| May 21, 1:06 PM CDT | Mesoscale Discussion | SPC | 54 min |
| Jun 2, 5:16 PM CDT | Severe Thunderstorm Warning | JAN | 29 min |
| Jun 9, 5:58 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Jun 11, 2:20 PM CDT | Heat Advisory | JAN | 3 days |
| Jun 18, 1:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 19, 2:16 PM CDT | Heat Advisory | JAN | 29 hr |
| Jun 25, 2:36 AM CDT | Heat Advisory | JAN | 64 hr |
| Jun 28, 4:39 PM CDT | Severe Thunderstorm Warning | JAN | 25 min |
| Jul 13, 2:12 PM CDT | Heat Advisory | JAN | 53 hr |
| Jul 14, 4:58 PM CDT | Excessive Heat Warning | JAN | 26 hr |
| Jul 16, 3:26 AM CDT | Heat Advisory | JAN | 16 hr |
| Jul 24, 4:30 AM CDT | Heat Advisory | JAN | 16 hr |
| Jul 25, 2:54 PM CDT | Heat Advisory | JAN | 5 hr |
| Jul 25, 5:07 PM CDT | Flash Flood Warning | JAN | 61 min |
| Jul 26, 8:03 PM CDT | Flash Flood Warning | JAN | 117 min |
| Jul 30, 4:45 AM CDT | Heat Advisory | JAN | 3 days |
| Aug 1, 1:39 PM CDT | Excessive Heat Warning | JAN | 4 days |
| Aug 3, 4:19 AM CDT | Heat Advisory | JAN | 34 hr |
| Aug 5, 4:56 AM CDT | Heat Advisory | JAN | 38 hr |
| Aug 5, 3:27 PM CDT | Severe Thunderstorm Warning | JAN | 48 min |
| Aug 7, 2:51 PM CDT | Heat Advisory | JAN | 9 days |
| Aug 11, 7:09 PM CDT | Heat Advisory | JAN | 5 days |
| Aug 15, 1:14 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 15, 8:21 PM CDT | Severe Thunderstorm Warning | JAN | 54 min |
| Aug 17, 2:00 PM CDT | Flash Flood Watch | JAN | 38 hr |
| Aug 19, 4:03 AM CDT | Heat Advisory | JAN | 4 days |
| Sep 11, 11:37 PM CDT | Dense Fog Advisory | JAN | 9 hr |
| Sep 23, 11:19 AM CDT | Fire Weather Watch | JAN | 32 hr |
| Sep 29, 2:58 PM CDT | Fire Weather Watch | JAN | 21 hr |
| Sep 30, 12:20 PM CDT | Fire Weather Watch | JAN | 15 hr |
| Sep 30, 12:20 PM CDT | Red Flag Warning | JAN | 7 hr |
| Oct 1, 3:21 AM CDT | Fire Weather Watch | JAN | 48 hr |
| Oct 1, 3:21 AM CDT | Red Flag Warning | JAN | 16 hr |
| Oct 2, 4:55 AM CDT | Fire Weather Watch | JAN | 23 hr |
| Oct 2, 4:55 AM CDT | Red Flag Warning | JAN | 14 hr |
| Oct 3, 3:45 AM CDT | Fire Weather Watch | JAN | 31 hr |
| Oct 3, 3:45 AM CDT | Red Flag Warning | JAN | 15 hr |
| Oct 4, 10:37 AM CDT | Fire Weather Watch | JAN | 41 hr |
| Oct 4, 10:37 AM CDT | Red Flag Warning | JAN | 8 hr |
| Oct 12, 11:34 AM CDT | Mesoscale Discussion | SPC | 56 min |
| Oct 12, 12:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 12, 3:20 PM CDT | Severe Thunderstorm Warning | JAN | 55 min |
| Oct 12, 3:28 PM CDT | Mesoscale Discussion | SPC | 62 min |
| Oct 12, 5:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Oct 13, 1:21 AM CDT | Dense Fog Advisory | JAN | 8 hr |
| Oct 14, 12:30 PM CDT | Red Flag Warning | JAN | 6 hr |
| Oct 20, 5:31 AM CDT | Dense Fog Advisory | JAN | 3 hr |
| Oct 22, 2:13 PM CDT | Fire Weather Watch | JAN | 14 hr |
| Oct 23, 4:38 AM CDT | Red Flag Warning | JAN | 13 hr |
| Oct 24, 3:36 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Oct 24, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Oct 24, 7:01 PM CDT | Mesoscale Discussion | SPC | 59 min |
| Oct 24, 8:23 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Oct 24, 8:46 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 24, 11:21 PM CDT | Severe Thunderstorm Warning | JAN | 54 min |
| Oct 24, 11:35 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Oct 25, 3:54 PM CDT | Wind Advisory | JAN | 24 hr |
| Oct 26, 11:26 AM CDT | Mesoscale Discussion | SPC | 64 min |
| Oct 26, 11:42 AM CDT | Tornado Watch | SPC | 7 hr |
| Nov 4, 3:10 PM CDT | Freeze Watch | JAN | 13 hr |
| Nov 5, 4:10 AM CDT | Freeze Watch | JAN | 23 hr |
| Nov 5, 4:10 AM CDT | Freeze Warning | JAN | 30 hr |
| Nov 6, 3:22 AM CDT | Freeze Warning | JAN | 30 hr |
| Nov 20, 7:56 PM CST | Dense Fog Advisory | JAN | 13 hr |
| Nov 23, 4:29 PM CST | Dense Fog Advisory | JAN | 16 hr |
| Nov 25, 1:40 PM CST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 25, 3:36 PM CST | Mesoscale Discussion | SPC | 84 min |
| Nov 29, 1:02 PM CST | Mesoscale Discussion | SPC | 58 min |
| Nov 29, 5:55 PM CST | Mesoscale Discussion | SPC | 95 min |
| Nov 29, 7:15 PM CST | Tornado Warning | JAN | 22 min |
| Nov 29, 8:49 PM CST | Tornado Watch | SPC | 7 hr |
| Dec 11, 2:31 PM CST | Mesoscale Discussion | SPC | 89 min |
| Dec 11, 3:11 PM CST | Wind Advisory | JAN | 27 hr |
| Dec 11, 3:18 PM CST | Tornado Watch | SPC | 6 hr |
| Dec 12, 5:08 AM CST | Hard Freeze Watch | JAN | 10 hr |
| Dec 12, 5:33 AM CST | Wind Chill Advisory | JAN | 27 hr |
| Dec 12, 2:52 PM CST | Hard Freeze Warning | JAN | 45 hr |
| Dec 25, 5:12 AM CST | Winter Weather Advisory | JAN | 7 hr |
| Dec 31, 3:58 PM CST | Tornado Watch | SPC | 7 hr |
| Dec 31, 5:35 PM CST | Mesoscale Discussion | SPC | 115 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 | 10 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 13 |
| Mesoscale Discussion | 42 |
| Flooding | |
| Flash Flood Warning | 4 |
| Flash Flood Watch | 4 |
| Winter | |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 6 |
| Heat | |
| Excessive Heat Warning | 2 |
| Heat Advisory | 13 |
| Cold | |
| Freeze Warning | 2 |
| Hard Freeze Warning | 3 |
| Freeze Watch | 2 |
| Hard Freeze Watch | 3 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| Lake Wind Advisory | 22 |
| Wind Advisory | 6 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
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.