Alert archive / Iowa / Pocahontas County
Weather alerts in Pocahontas County, Iowa, 2016
112 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Pocahontas County and its neighbors
Each county as a circle sized by its count in 2016. Tap one for its archive.
- Alerts
- 112
- Warnings
- 23
- Watches
- 19
- Advisories
- 29
- Busiest month
- July25 alerts
- Busiest day
- July 7, 20168 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Pocahontas County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 11 | 8 | 27% | 4 | 25% | 30 min |
| Flash flood warnings | 3 | 2 | 33% | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Des Moines, IA: tornado warnings | 19 | 11 | 42% | 23 | 65% | 16 min |
| NWS Des Moines, IA: severe thunderstorm warnings | 162 | 79 | 51% | 246 | 65% | 21 min |
| NWS Des Moines, IA: flash flood warnings | 39 | 28 | 28% | 64 | 84% | 135 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 7, 6:46 AM CST | Dense Fog Advisory | DMX | 5 hr |
| Jan 9, 3:55 AM CST | Wind Chill Advisory | DMX | 32 hr |
| Jan 11, 3:49 AM CST | Wind Chill Advisory | DMX | 32 hr |
| Jan 11, 8:55 PM CST | Winter Weather Advisory | DMX | 7 hr |
| Jan 16, 3:29 AM CST | Wind Chill Warning | DMX | 54 hr |
| Jan 24, 3:17 PM CST | Winter Weather Advisory | DMX | 33 hr |
| Jan 24, 7:41 PM CST | Dense Fog Advisory | DMX | 10 hr |
| Jan 31, 3:48 AM CST | Blizzard Watch | DMX | 25 hr |
| Feb 1, 4:21 AM CST | Blizzard Warning | DMX | 50 hr |
| Feb 2, 7:50 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Feb 2, 11:35 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Feb 2, 11:19 PM CST | Winter Weather Advisory | DMX | 14 hr |
| Feb 5, 3:50 PM CST | Blizzard Watch | DMX | 36 hr |
| Feb 7, 3:31 AM CST | Blizzard Warning | DMX | 38 hr |
| Feb 7, 11:18 PM CST | Winter Weather Advisory | DMX | 34 hr |
| Feb 12, 3:30 AM CST | Wind Chill Advisory | DMX | 29 hr |
| Feb 13, 3:58 AM CST | Winter Weather Advisory | DMX | 34 hr |
| Feb 18, 3:48 PM CST | Wind Advisory | DMX | 26 hr |
| Feb 19, 8:54 AM CST | High Wind Warning | DMX | 6 hr |
| Feb 29, 3:34 AM CST | Winter Weather Advisory | DMX | 28 hr |
| Mar 13, 10:15 PM CDT | Dense Fog Advisory | DMX | 14 hr |
| Mar 15, 3:37 AM CDT | High Wind Watch | DMX | 11 hr |
| Mar 15, 3:05 PM CDT | High Wind Warning | DMX | 22 hr |
| Mar 15, 3:05 PM CDT | Wind Advisory | DMX | 28 hr |
| Mar 22, 4:00 PM CDT | Winter Storm Warning | DMX | 41 hr |
| Mar 22, 4:00 PM CDT | Winter Weather Advisory | DMX | 11 hr |
| Mar 23, 7:15 PM CDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 1, 3:37 PM CDT | Wind Advisory | DMX | 24 hr |
| Apr 5, 2:57 PM CDT | Wind Advisory | DMX | 25 hr |
| Apr 7, 7:59 AM CDT | Wind Advisory | DMX | 10 hr |
| Apr 24, 2:28 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 24, 8:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| May 11, 5:17 AM CDT | Dense Fog Advisory | DMX | 6 hr |
| May 23, 1:58 PM CDT | Mesoscale Discussion | SPC | 92 min |
| May 25, 11:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 30, 5:14 PM CDT | Mesoscale Discussion | SPC | 91 min |
| Jun 3, 3:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 10, 3:19 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 11, 4:09 PM CDT | Severe Thunderstorm Warning | DMX | 51 min |
| Jun 14, 11:45 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 14, 12:43 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 14, 2:51 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jun 17, 8:29 PM CDT | Severe Thunderstorm Warning | DMX | 46 min |
| Jun 21, 11:18 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 22, 2:02 AM CDT | Severe Thunderstorm Warning | DMX | 43 min |
| Jun 22, 2:31 AM CDT | Mesoscale Discussion | SPC | 119 min |
| Jun 25, 1:52 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 5, 4:10 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 5, 10:35 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 7, 12:20 AM CDT | Severe Thunderstorm Warning | DMX | 40 min |
| Jul 7, 12:30 AM CDT | Mesoscale Discussion | SPC | 90 min |
| Jul 7, 12:45 AM CDT | Special Weather Statement | DMX | 60 min |
| Jul 7, 12:47 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jul 7, 12:52 AM CDT | Severe Thunderstorm Warning | DMX | 38 min |
| Jul 7, 1:22 AM CDT | Severe Thunderstorm Warning | DMX | 38 min |
| Jul 7, 1:50 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 7, 3:54 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 11, 3:16 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Jul 11, 3:48 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 11, 8:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Jul 11, 9:11 PM CDT | Special Weather Statement | DMX | 49 min |
| Jul 11, 9:41 PM CDT | Severe Thunderstorm Warning | DMX | 34 min |
| Jul 13, 7:34 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 16, 9:43 PM CDT | Flash Flood Watch | DMX | 9 hr |
| Jul 17, 2:06 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 2:21 AM CDT | Severe Thunderstorm Warning | DMX | 30 min |
| Jul 17, 2:43 AM CDT | Severe Thunderstorm Warning | DMX | 62 min |
| Jul 18, 3:43 PM CDT | Excessive Heat Watch | DMX | 36 hr |
| Jul 19, 7:37 AM CDT | Special Weather Statement | DMX | 53 min |
| Jul 19, 10:14 AM CDT | Flash Flood Warning | DMX | 6 hr |
| Jul 19, 4:24 PM CDT | Excessive Heat Warning | DMX | 4 days |
| Jul 22, 2:39 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 1, 7:36 AM CDT | Special Weather Statement | DMX | 54 min |
| Aug 10, 3:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Aug 10, 4:55 PM CDT | Severe Thunderstorm Warning | DMX | 35 min |
| Aug 11, 3:46 AM CDT | Flash Flood Watch | DMX | 27 hr |
| Aug 11, 4:29 AM CDT | Special Weather Statement | DMX | 61 min |
| Aug 11, 12:37 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 3:26 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 11, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 11, 6:17 PM CDT | Mesoscale Discussion | SPC | 58 min |
| Aug 23, 2:05 PM CDT | Mesoscale Discussion | SPC | 55 min |
| Aug 23, 3:28 PM CDT | Special Weather Statement | DMX | 62 min |
| Aug 23, 3:34 PM CDT | Severe Thunderstorm Warning | DMX | 41 min |
| Sep 6, 3:28 PM CDT | Flash Flood Watch | DMX | 31 hr |
| Sep 6, 3:47 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 6, 10:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Sep 9, 9:16 AM CDT | Special Weather Statement | DMX | 44 min |
| Sep 15, 1:58 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 15, 3:35 PM CDT | Flash Flood Watch | DMX | 13 hr |
| Sep 15, 5:01 PM CDT | Special Weather Statement | DMX | 14 min |
| Sep 15, 5:02 PM CDT | Special Weather Statement | DMX | 13 min |
| Sep 15, 5:17 PM CDT | Special Weather Statement | DMX | 28 min |
| Sep 15, 5:40 PM CDT | Special Weather Statement | DMX | 35 min |
| Sep 15, 6:10 PM CDT | Flash Flood Warning | DMX | 6 hr |
| Sep 15, 6:16 PM CDT | Special Weather Statement | DMX | 44 min |
| Sep 20, 3:32 PM CDT | Flash Flood Watch | DMX | 69 hr |
| Sep 21, 2:00 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 23, 5:42 AM CDT | Flash Flood Warning | DMX | 4 hr |
| Oct 12, 3:53 AM CDT | Freeze Warning | DMX | 29 hr |
| Oct 16, 3:30 PM CDT | Dense Fog Advisory | DMX | 20 hr |
| Nov 17, 3:42 PM CST | Wind Advisory | DMX | 38 hr |
| Dec 9, 11:11 AM CST | Winter Weather Advisory | DMX | 40 hr |
| Dec 14, 3:59 AM CST | Wind Chill Advisory | DMX | 29 hr |
| Dec 15, 11:43 AM CST | Winter Weather Advisory | DMX | 57 hr |
| Dec 16, 4:33 AM CST | Wind Chill Warning | DMX | 55 hr |
| Dec 18, 12:09 PM CST | Wind Chill Advisory | DMX | 16 hr |
| Dec 22, 2:53 PM CST | Winter Weather Advisory | DMX | 27 hr |
| Dec 23, 3:48 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 24, 1:50 AM CST | Dense Fog Advisory | DMX | 26 hr |
| Dec 25, 2:34 PM CST | Wind Advisory | DMX | 27 hr |
| Dec 29, 3:40 AM CST | Wind Advisory | DMX | 13 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 | 11 |
| Severe Thunderstorm Watch | 10 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 12 |
| Flooding | |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 5 |
| Winter | |
| Blizzard Warning | 2 |
| Winter Storm Warning | 1 |
| Blizzard Watch | 2 |
| Winter Weather Advisory | 10 |
| Heat | |
| Excessive Heat Warning | 1 |
| Excessive Heat Watch | 1 |
| Cold | |
| Freeze Warning | 1 |
| Wind Chill Warning | 2 |
| Wind Chill Advisory | 5 |
| Wind and dust | |
| High Wind Warning | 2 |
| High Wind Watch | 1 |
| Wind Advisory | 8 |
| Fog and smoke | |
| Dense Fog Advisory | 6 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.