Alert archive / Arkansas / Hempstead County
Weather alerts in Hempstead County, Arkansas, 2009
212 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hempstead County and its neighbors
Each county as a circle sized by its count in 2009. Tap one for its archive.
- Alerts
- 212
- Warnings
- 59
- Watches
- 48
- Advisories
- 43
- Busiest month
- May55 alerts
- Busiest day
- May 6, 20099 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
2 of 4 tornado warnings covering Hempstead County in 2009 had a tornado report inside them; 2 of 3 tornado reports fell inside a warning, on average 21 minutes after it went out.
Hempstead County, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 2 | 50% | 3 | 67% | 21 min |
| Severe thunderstorm warnings | 32 | 10 | 69% | 2 | 100% | 30 min |
| Flash flood warnings | 20 | 18 | 10% | 6 | 100% | 123 min |
Each office's whole area, 2009
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Shreveport, LA: tornado warnings | 131 | 51 | 61% | 134 | 60% | 18 min |
| NWS Shreveport, LA: severe thunderstorm warnings | 390 | 173 | 56% | 463 | 76% | 24 min |
| NWS Shreveport, LA: flash flood warnings | 126 | 102 | 19% | 356 | 92% | 110 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 5, 4:58 AM CST | Flash Flood Watch | SHV | 34 hr |
| Jan 10, 4:00 AM CST | Lake Wind Advisory | SHV | 14 hr |
| Jan 19, 3:03 AM CST | Lake Wind Advisory | SHV | 13 hr |
| Jan 20, 3:48 AM CST | Lake Wind Advisory | SHV | 12 hr |
| Jan 26, 4:17 AM CST | Winter Storm Watch | SHV | 24 hr |
| Jan 26, 10:20 AM CST | Winter Weather Advisory | SHV | 6 hr |
| Jan 26, 4:06 PM CST | Winter Weather Advisory | SHV | 8 hr |
| Jan 27, 3:59 AM CST | Ice Storm Warning | SHV | 25 hr |
| Jan 27, 8:55 PM CST | Winter Weather Advisory | SHV | 10 hr |
| Feb 6, 4:49 AM CST | Lake Wind Advisory | SHV | 13 hr |
| Feb 8, 9:38 PM CST | Lake Wind Advisory | SHV | 20 hr |
| Feb 10, 3:50 PM CST | Lake Wind Advisory | SHV | 14 hr |
| Feb 10, 8:34 PM CST | Mesoscale Discussion | SPC | 86 min |
| Feb 10, 9:30 PM CST | Tornado Watch | SPC | 7 hr |
| Feb 11, 10:55 AM CST | Lake Wind Advisory | SHV | 5 hr |
| Feb 17, 5:44 PM CST | Mesoscale Discussion | SPC | 3 hr |
| Feb 17, 7:09 PM CST | Severe Thunderstorm Watch | SPC | 6 hr |
| Feb 21, 4:55 AM CST | Lake Wind Advisory | SHV | 11 hr |
| Feb 26, 3:34 AM CST | Lake Wind Advisory | SHV | 12 hr |
| Feb 26, 5:56 PM CST | Mesoscale Discussion | SPC | 94 min |
| Feb 26, 6:12 PM CST | Severe Thunderstorm Watch | SPC | 8 hr |
| Feb 26, 8:29 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Feb 26, 10:36 PM CST | Mesoscale Discussion | SPC | 114 min |
| Feb 27, 10:15 AM CST | Mesoscale Discussion | SPC | 90 min |
| Feb 28, 5:11 AM CST | Lake Wind Advisory | SHV | 16 hr |
| Feb 28, 9:15 PM CST | Lake Wind Advisory | SHV | 3 hr |
| Mar 4, 3:36 PM CST | Lake Wind Advisory | SHV | 26 hr |
| Mar 6, 5:55 AM CST | Lake Wind Advisory | SHV | 12 hr |
| Mar 7, 4:40 AM CST | Lake Wind Advisory | SHV | 13 hr |
| Mar 8, 10:11 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 23, 9:53 PM CDT | Lake Wind Advisory | SHV | 21 hr |
| Mar 25, 2:42 PM CDT | Mesoscale Discussion | SPC | 93 min |
| Mar 27, 12:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Mar 27, 5:53 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Mar 27, 6:35 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 27, 9:21 PM CDT | Lake Wind Advisory | SHV | 22 hr |
| Mar 27, 10:24 PM CDT | Mesoscale Discussion | SPC | 96 min |
| Mar 29, 3:28 PM CDT | Lake Wind Advisory | SHV | 28 hr |
| Apr 1, 2:54 PM CDT | Lake Wind Advisory | SHV | 31 hr |
| Apr 2, 1:32 AM CDT | Mesoscale Discussion | SPC | 58 min |
| Apr 2, 4:43 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 2, 7:36 AM CDT | Mesoscale Discussion | SPC | 54 min |
| Apr 5, 3:22 AM CDT | Lake Wind Advisory | SHV | 16 hr |
| Apr 6, 3:49 AM CDT | Freeze Warning | SHV | 29 hr |
| Apr 6, 3:49 AM CDT | Lake Wind Advisory | SHV | 18 hr |
| Apr 8, 3:46 PM CDT | Lake Wind Advisory | SHV | 28 hr |
| Apr 9, 8:16 PM CDT | Severe Thunderstorm Warning | SHV | 44 min |
| Apr 9, 9:10 PM CDT | Tornado Watch | SPC | 4 hr |
| Apr 9, 9:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 12, 6:42 AM CDT | Severe Thunderstorm Warning | SHV | 48 min |
| Apr 12, 7:13 AM CDT | Mesoscale Discussion | SPC | 92 min |
| Apr 12, 7:26 AM CDT | Severe Thunderstorm Warning | SHV | 34 min |
| Apr 12, 8:48 AM CDT | Severe Thunderstorm Warning | SHV | 27 min |
| Apr 12, 9:17 AM CDT | Severe Thunderstorm Warning | SHV | 58 min |
| Apr 12, 9:30 AM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 12, 10:02 AM CDT | Severe Thunderstorm Warning | SHV | 43 min |
| Apr 13, 2:47 AM CDT | Severe Thunderstorm Warning | SHV | 58 min |
| Apr 13, 4:04 AM CDT | Dense Fog Advisory | SHV | 4 hr |
| Apr 16, 3:35 PM CDT | Flash Flood Watch | SHV | 54 hr |
| Apr 18, 12:59 PM CDT | Areal Flood Advisory | SHV | 3 hr |
| Apr 23, 3:21 AM CDT | Lake Wind Advisory | SHV | 15 hr |
| Apr 25, 3:15 PM CDT | Lake Wind Advisory | SHV | 28 hr |
| Apr 27, 9:28 AM CDT | Severe Thunderstorm Watch | SPC | 12 hr |
| Apr 27, 1:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Apr 27, 2:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 27, 2:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 27, 7:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| Apr 27, 8:54 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Apr 29, 9:36 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 29, 12:57 PM CDT | Flash Flood Watch | SHV | 15 hr |
| Apr 29, 12:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 29, 3:04 PM CDT | Mesoscale Discussion | SPC | 56 min |
| Apr 29, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 29, 5:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Apr 29, 5:45 PM CDT | Severe Thunderstorm Warning | SHV | 45 min |
| Apr 29, 5:53 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 2, 5:27 AM CDT | Flash Flood Watch | SHV | 34 hr |
| May 2, 9:23 AM CDT | Mesoscale Discussion | SPC | 97 min |
| May 2, 12:17 PM CDT | Tornado Watch | SPC | 7 hr |
| May 2, 4:00 PM CDT | Severe Thunderstorm Warning | SHV | 45 min |
| May 2, 6:03 PM CDT | Tornado Watch | SPC | 6 hr |
| May 2, 6:08 PM CDT | Tornado Warning | SHV | 67 min |
| May 2, 6:10 PM CDT | Severe Thunderstorm Warning | SHV | 65 min |
| May 2, 6:42 PM CDT | Flash Flood Warning | SHV | 14 hr |
| May 2, 7:38 PM CDT | Mesoscale Discussion | SPC | 97 min |
| May 2, 9:59 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 2, 10:23 PM CDT | Flash Flood Warning | SHV | 4 hr |
| May 2, 10:40 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 2, 11:43 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 3, 1:01 AM CDT | Severe Thunderstorm Warning | SHV | 59 min |
| May 3, 8:42 AM CDT | Flash Flood Warning | SHV | 3 hr |
| May 5, 4:21 AM CDT | Flash Flood Watch | SHV | 33 hr |
| May 5, 5:53 PM CDT | Severe Thunderstorm Warning | SHV | 17 min |
| May 5, 10:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 5, 10:27 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 6, 12:53 AM CDT | Mesoscale Discussion | SPC | 37 min |
| May 6, 12:54 AM CDT | Tornado Watch | SPC | 5 hr |
| May 6, 3:05 AM CDT | Mesoscale Discussion | SPC | 115 min |
| May 6, 5:29 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 6, 6:54 AM CDT | Flash Flood Warning | SHV | 3 hr |
| May 6, 6:58 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 6, 7:16 AM CDT | Severe Thunderstorm Warning | SHV | 44 min |
| May 8, 3:45 AM CDT | Lake Wind Advisory | SHV | 15 hr |
| May 9, 12:33 PM CDT | Mesoscale Discussion | SPC | 57 min |
| May 9, 12:51 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 9, 2:05 PM CDT | Severe Thunderstorm Warning | SHV | 55 min |
| May 9, 2:09 PM CDT | Tornado Warning | SHV | 66 min |
| May 9, 3:03 PM CDT | Severe Thunderstorm Warning | SHV | 42 min |
| May 9, 3:25 PM CDT | Mesoscale Discussion | SPC | 65 min |
| May 9, 4:06 PM CDT | Flash Flood Watch | SHV | 3 days |
| May 9, 4:07 PM CDT | Flash Flood Warning | SHV | 3 hr |
| May 9, 6:56 PM CDT | Flash Flood Warning | SHV | 4 hr |
| May 10, 12:02 AM CDT | Mesoscale Discussion | SPC | 118 min |
| May 10, 2:05 AM CDT | Flash Flood Warning | SHV | 12 hr |
| May 10, 2:36 AM CDT | Severe Thunderstorm Warning | SHV | 54 min |
| May 10, 4:57 AM CDT | Severe Thunderstorm Warning | SHV | 63 min |
| May 10, 5:38 AM CDT | Severe Thunderstorm Warning | SHV | 52 min |
| May 10, 11:17 AM CDT | Mesoscale Discussion | SPC | 118 min |
| May 10, 2:17 PM CDT | Flash Flood Warning | SHV | 4 hr |
| May 11, 10:52 AM CDT | Flash Flood Warning | SHV | 4 hr |
| May 12, 1:19 PM CDT | Flash Flood Warning | SHV | 4 hr |
| May 12, 1:32 PM CDT | Severe Thunderstorm Warning | SHV | 35 min |
| May 12, 1:47 PM CDT | Severe Thunderstorm Warning | SHV | 58 min |
| May 12, 2:20 PM CDT | Mesoscale Discussion | SPC | 55 min |
| May 12, 3:20 PM CDT | Flash Flood Warning | SHV | 3 hr |
| May 13, 4:30 AM CDT | Lake Wind Advisory | SHV | 15 hr |
| May 13, 9:48 PM CDT | Flash Flood Watch | SHV | 13 hr |
| May 14, 1:11 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 14, 4:17 AM CDT | Flash Flood Warning | SHV | 4 hr |
| May 14, 4:27 AM CDT | Severe Thunderstorm Warning | SHV | 48 min |
| May 16, 6:18 AM CDT | Flash Flood Warning | SHV | 3 hr |
| Jun 3, 6:26 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 6:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Jun 10, 6:37 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 10, 8:39 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Jun 10, 10:33 PM CDT | Severe Thunderstorm Warning | SHV | 49 min |
| Jun 10, 11:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jun 12, 1:30 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Jun 12, 11:10 PM CDT | Mesoscale Discussion | SPC | 65 min |
| Jun 13, 4:23 AM CDT | Severe Thunderstorm Warning | SHV | 37 min |
| Jun 13, 4:59 AM CDT | Severe Thunderstorm Warning | SHV | 46 min |
| Jun 14, 1:51 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 14, 5:26 AM CDT | Mesoscale Discussion | SPC | 94 min |
| Jun 24, 3:43 AM CDT | Heat Advisory | SHV | 15 hr |
| Jun 26, 9:58 PM CDT | Heat Advisory | SHV | 21 hr |
| Jun 30, 8:12 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Jul 2, 4:11 PM CDT | Heat Advisory | SHV | 53 hr |
| Jul 9, 5:10 AM CDT | Heat Advisory | SHV | 8 days |
| Jul 16, 3:33 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 16, 6:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Jul 21, 7:20 AM CDT | Areal Flood Advisory | SHV | 3 hr |
| Jul 27, 3:36 PM CDT | Flash Flood Watch | SHV | 29 hr |
| Jul 28, 5:57 AM CDT | Mesoscale Discussion | SPC | 78 min |
| Jul 29, 4:32 PM CDT | Flash Flood Watch | SHV | 32 hr |
| Jul 30, 6:40 AM CDT | Mesoscale Discussion | SPC | 95 min |
| Aug 1, 9:06 AM CDT | Flash Flood Warning | SHV | 3 hr |
| Aug 5, 7:31 AM CDT | Severe Thunderstorm Warning | SHV | 44 min |
| Aug 5, 5:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 11, 3:29 AM CDT | Areal Flood Advisory | SHV | 3 hr |
| Aug 20, 2:32 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Aug 20, 3:08 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 20, 7:29 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Aug 20, 9:57 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 11, 3:25 PM CDT | Flash Flood Watch | SHV | 43 hr |
| Sep 14, 5:09 AM CDT | Flash Flood Watch | SHV | 47 hr |
| Sep 15, 3:04 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 16, 4:29 AM CDT | Flash Flood Watch | SHV | 59 hr |
| Sep 21, 4:18 AM CDT | Flash Flood Watch | SHV | 25 hr |
| Oct 1, 6:29 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Oct 1, 7:27 PM CDT | Severe Thunderstorm Warning | SHV | 63 min |
| Oct 1, 8:15 PM CDT | Severe Thunderstorm Warning | SHV | 60 min |
| Oct 1, 8:37 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Oct 7, 3:47 PM CDT | Flash Flood Watch | SHV | 48 hr |
| Oct 9, 6:59 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 9, 7:44 AM CDT | Flash Flood Warning | SHV | 3 hr |
| Oct 12, 10:44 PM CDT | Flash Flood Watch | SHV | 29 hr |
| Oct 13, 8:46 AM CDT | Areal Flood Advisory | SHV | 3 hr |
| Oct 13, 9:41 AM CDT | Flash Flood Warning | SHV | 7 hr |
| Oct 13, 10:34 AM CDT | Flash Flood Warning | SHV | 6 hr |
| Oct 13, 12:19 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Oct 13, 4:37 PM CDT | Flash Flood Warning | SHV | 3 hr |
| Oct 13, 7:31 PM CDT | Areal Flood Advisory | SHV | 119 min |
| Oct 15, 2:15 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 15, 5:08 AM CDT | Severe Thunderstorm Warning | SHV | 37 min |
| Oct 15, 5:39 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 15, 5:55 AM CDT | Flash Flood Watch | SHV | 10 hr |
| Oct 15, 7:11 AM CDT | Severe Thunderstorm Warning | SHV | 64 min |
| Oct 15, 7:20 AM CDT | Flash Flood Warning | SHV | 3 hr |
| Oct 21, 3:51 PM CDT | Flash Flood Watch | SHV | 24 hr |
| Oct 25, 3:22 PM CDT | Flash Flood Watch | SHV | 36 hr |
| Oct 28, 4:38 AM CDT | Dense Fog Advisory | SHV | 4 hr |
| Oct 28, 3:37 PM CDT | Flash Flood Watch | SHV | 48 hr |
| Oct 29, 1:14 PM CDT | Tornado Watch | SPC | 8 hr |
| Oct 29, 3:03 PM CDT | Mesoscale Discussion | SPC | 117 min |
| Oct 29, 4:57 PM CDT | Severe Thunderstorm Warning | SHV | 37 min |
| Oct 29, 5:24 PM CDT | Mesoscale Discussion | SPC | 66 min |
| Nov 26, 5:46 AM CST | Freeze Warning | SHV | 27 hr |
| Nov 29, 5:30 PM CST | Mesoscale Discussion | SPC | 90 min |
| Nov 29, 6:29 PM CST | Severe Thunderstorm Warning | SHV | 46 min |
| Dec 8, 9:43 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 9, 4:43 AM CST | Lake Wind Advisory | SHV | 11 hr |
| Dec 13, 2:54 PM CST | Dense Fog Advisory | SHV | 16 hr |
| Dec 23, 3:44 AM CST | Flash Flood Watch | SHV | 29 hr |
| Dec 23, 2:20 PM CST | Lake Wind Advisory | SHV | 38 hr |
| Dec 23, 7:50 PM CST | Mesoscale Discussion | SPC | 85 min |
| Dec 23, 8:48 PM CST | Tornado Watch | SPC | 9 hr |
| Dec 23, 9:18 PM CST | Severe Thunderstorm Warning | SHV | 42 min |
| Dec 23, 9:29 PM CST | Flash Flood Warning | SHV | 3 hr |
| Dec 23, 10:03 PM CST | Tornado Warning | SHV | 42 min |
| Dec 23, 10:47 PM CST | Tornado Warning | SHV | 43 min |
| Dec 23, 11:06 PM CST | Mesoscale Discussion | SPC | 114 min |
| Dec 24, 4:49 AM CST | Winter Weather Advisory | SHV | 23 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 | 32 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 19 |
| Tornado Watch | 8 |
| Mesoscale Discussion | 62 |
| Flooding | |
| Flash Flood Warning | 20 |
| Flash Flood Watch | 20 |
| Areal Flood Advisory | 5 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Watch | 1 |
| Winter Weather Advisory | 4 |
| Heat | |
| Heat Advisory | 4 |
| Cold | |
| Freeze Warning | 2 |
| Wind and dust | |
| Lake Wind Advisory | 27 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20082010
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.