Alert archive / Oklahoma / Alfalfa County
Weather alerts in Alfalfa County, Oklahoma, 2015
200 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Alfalfa County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 200
- Warnings
- 47
- Watches
- 30
- Advisories
- 43
- Busiest month
- May52 alerts
- Busiest day
- April 18, 201514 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 Alfalfa County in 2015 had a tornado report inside them.
Alfalfa County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 4 | 2 | 50% | 0 | ||
| Severe thunderstorm warnings | 35 | 8 | 77% | 5 | 80% | 18 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Norman, OK: tornado warnings | 152 | 54 | 64% | 96 | 80% | 14 min |
| NWS Norman, OK: severe thunderstorm warnings | 661 | 312 | 53% | 662 | 81% | 22 min |
| NWS Norman, OK: flash flood warnings | 135 | 88 | 35% | 195 | 94% | 114 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 1, 10:23 AM CST | Special Weather Statement | OUN | 52 min |
| Jan 1, 3:42 PM CST | Winter Weather Advisory | OUN | 54 hr |
| Jan 3, 2:45 PM CST | Wind Chill Advisory | OUN | 17 hr |
| Jan 6, 2:34 PM CST | Wind Chill Advisory | OUN | 19 hr |
| Jan 7, 3:34 PM CST | Wind Chill Advisory | OUN | 18 hr |
| Jan 21, 12:53 PM CST | Winter Weather Advisory | OUN | 20 hr |
| Jan 25, 2:53 AM CST | Wind Advisory | OUN | 14 hr |
| Feb 1, 3:51 AM CST | Wind Advisory | OUN | 14 hr |
| Feb 4, 4:02 AM CST | Wind Advisory | OUN | 17 hr |
| Feb 21, 12:06 PM CST | Winter Weather Advisory | OUN | 26 hr |
| Feb 22, 2:01 PM CST | Winter Weather Advisory | OUN | 28 hr |
| Feb 25, 2:56 PM CST | Wind Advisory | OUN | 17 hr |
| Feb 27, 3:05 PM CST | Winter Weather Advisory | OUN | 44 hr |
| Feb 28, 3:37 AM CST | Winter Weather Advisory | OUN | 26 hr |
| Mar 3, 11:16 AM CST | Winter Weather Advisory | OUN | 40 hr |
| Mar 10, 7:34 AM CDT | Dense Fog Advisory | OUN | 3 hr |
| Mar 15, 3:26 AM CDT | Fire Weather Watch | OUN | 11 hr |
| Mar 15, 2:47 PM CDT | Red Flag Warning | OUN | 30 hr |
| Mar 19, 4:30 AM CDT | Dense Fog Advisory | OUN | 7 hr |
| Mar 25, 4:14 AM CDT | Wind Advisory | OUN | 24 hr |
| Apr 1, 7:26 PM CDT | Mesoscale Discussion | SPC | 64 min |
| Apr 1, 10:34 PM CDT | Special Weather Statement | OUN | 41 min |
| Apr 2, 8:58 PM CDT | Wind Advisory | OUN | 16 hr |
| Apr 3, 3:24 AM CDT | Fire Weather Watch | OUN | 24 hr |
| Apr 4, 1:15 AM CDT | Freeze Warning | OUN | 8 hr |
| Apr 6, 3:42 AM CDT | Fire Weather Watch | OUN | 49 hr |
| Apr 8, 3:37 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 8, 7:45 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Apr 12, 5:03 PM CDT | Mesoscale Discussion | SPC | 57 min |
| Apr 12, 5:17 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 12, 8:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Apr 12, 10:27 PM CDT | Severe Thunderstorm Warning | OUN | 48 min |
| Apr 16, 4:32 PM CDT | Severe Thunderstorm Warning | OUN | 43 min |
| Apr 16, 4:59 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Apr 16, 7:07 PM CDT | Special Weather Statement | OUN | 23 min |
| Apr 16, 7:16 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 16, 7:40 PM CDT | Special Weather Statement | OUN | 35 min |
| Apr 16, 8:36 PM CDT | Special Weather Statement | OUN | 24 min |
| Apr 16, 8:58 PM CDT | Severe Thunderstorm Warning | OUN | 47 min |
| Apr 16, 9:08 PM CDT | Special Weather Statement | OUN | 37 min |
| Apr 16, 9:17 PM CDT | Mesoscale Discussion | SPC | 88 min |
| Apr 16, 10:01 PM CDT | Special Weather Statement | OUN | 29 min |
| Apr 16, 10:27 PM CDT | Special Weather Statement | OUN | 33 min |
| Apr 16, 10:52 PM CDT | Special Weather Statement | OUN | 38 min |
| Apr 17, 3:06 PM CDT | Mesoscale Discussion | SPC | 84 min |
| Apr 18, 12:45 PM CDT | Mesoscale Discussion | SPC | 60 min |
| Apr 18, 12:49 PM CDT | Special Weather Statement | OUN | 26 min |
| Apr 18, 1:15 PM CDT | Special Weather Statement | OUN | 30 min |
| Apr 18, 1:52 PM CDT | Mesoscale Discussion | SPC | 113 min |
| Apr 18, 1:58 PM CDT | Special Weather Statement | OUN | 32 min |
| Apr 18, 2:27 PM CDT | Tornado Watch | SPC | 6 hr |
| Apr 18, 3:45 PM CDT | Severe Thunderstorm Warning | OUN | 45 min |
| Apr 18, 3:54 PM CDT | Severe Thunderstorm Warning | OUN | 51 min |
| Apr 18, 4:28 PM CDT | Severe Thunderstorm Warning | OUN | 47 min |
| Apr 18, 4:47 PM CDT | Severe Thunderstorm Warning | OUN | 43 min |
| Apr 18, 5:26 PM CDT | Severe Thunderstorm Warning | OUN | 49 min |
| Apr 18, 5:36 PM CDT | Severe Thunderstorm Warning | OUN | 39 min |
| Apr 18, 6:03 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Apr 18, 6:31 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 18, 8:09 PM CDT | Special Weather Statement | OUN | 36 min |
| Apr 18, 8:25 PM CDT | Severe Thunderstorm Warning | OUN | 50 min |
| Apr 18, 9:13 PM CDT | Special Weather Statement | OUN | 47 min |
| Apr 19, 10:47 AM CDT | Wind Advisory | OUN | 6 hr |
| Apr 19, 12:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 22, 2:55 AM CDT | Mesoscale Discussion | SPC | 3 hr |
| May 6, 1:23 PM CDT | Tornado Watch | SPC | 8 hr |
| May 6, 3:27 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 6, 3:45 PM CDT | Severe Thunderstorm Warning | OUN | 45 min |
| May 6, 4:03 PM CDT | Tornado Warning | OUN | 27 min |
| May 6, 4:52 PM CDT | Tornado Warning | OUN | 23 min |
| May 6, 5:15 PM CDT | Tornado Warning | OUN | 30 min |
| May 6, 5:25 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 6, 6:04 PM CDT | Severe Thunderstorm Warning | OUN | 41 min |
| May 6, 6:21 PM CDT | Severe Thunderstorm Warning | OUN | 24 min |
| May 6, 6:34 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 6, 6:43 PM CDT | Severe Thunderstorm Warning | OUN | 32 min |
| May 6, 7:25 PM CDT | Severe Thunderstorm Warning | OUN | 50 min |
| May 6, 8:08 PM CDT | Mesoscale Discussion | SPC | 67 min |
| May 6, 8:16 PM CDT | Severe Thunderstorm Warning | OUN | 44 min |
| May 6, 8:51 PM CDT | Tornado Watch | SPC | 5 hr |
| May 6, 8:56 PM CDT | Severe Thunderstorm Warning | OUN | 49 min |
| May 6, 9:44 PM CDT | Severe Thunderstorm Warning | OUN | 46 min |
| May 6, 10:28 PM CDT | Severe Thunderstorm Warning | OUN | 47 min |
| May 6, 10:53 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 6, 11:16 PM CDT | Severe Thunderstorm Warning | OUN | 31 min |
| May 7, 11:54 AM CDT | Flood Watch | OUN | 3 days |
| May 7, 4:56 PM CDT | Special Weather Statement | OUN | 64 min |
| May 8, 4:36 AM CDT | Dense Fog Advisory | OUN | 5 hr |
| May 9, 7:36 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 9, 11:36 AM CDT | Mesoscale Discussion | SPC | 84 min |
| May 15, 11:49 AM CDT | Flash Flood Watch | OUN | 41 hr |
| May 16, 11:26 AM CDT | Special Weather Statement | OUN | 34 min |
| May 16, 1:31 PM CDT | Special Weather Statement | OUN | 29 min |
| May 16, 1:47 PM CDT | Special Weather Statement | OUN | 28 min |
| May 16, 2:09 PM CDT | Special Weather Statement | OUN | 36 min |
| May 16, 3:41 PM CDT | Mesoscale Discussion | SPC | 94 min |
| May 16, 4:00 PM CDT | Tornado Watch | SPC | 8 hr |
| May 16, 5:46 PM CDT | Severe Thunderstorm Warning | OUN | 44 min |
| May 16, 5:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| May 16, 6:38 PM CDT | Tornado Warning | OUN | 37 min |
| May 16, 7:11 PM CDT | Severe Thunderstorm Warning | OUN | 49 min |
| May 18, 3:57 PM CDT | Flood Watch | OUN | 39 hr |
| May 20, 8:46 PM CDT | Flash Flood Watch | OUN | 5 days |
| May 23, 11:28 AM CDT | Areal Flood Advisory | OUN | 3 hr |
| May 23, 1:58 PM CDT | Areal Flood Advisory | OUN | 3 hr |
| May 24, 3:08 PM CDT | Areal Flood Advisory | OUN | 3 hr |
| May 25, 12:22 PM CDT | Mesoscale Discussion | SPC | 83 min |
| May 25, 6:44 PM CDT | Special Weather Statement | OUN | 46 min |
| May 26, 5:27 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| May 26, 7:55 PM CDT | Mesoscale Discussion | SPC | 95 min |
| May 26, 7:56 PM CDT | Severe Thunderstorm Warning | OUN | 49 min |
| May 26, 8:44 PM CDT | Severe Thunderstorm Warning | OUN | 31 min |
| May 27, 2:40 PM CDT | Flash Flood Watch | OUN | 70 hr |
| May 27, 11:32 PM CDT | Special Weather Statement | OUN | 43 min |
| May 28, 12:05 AM CDT | Special Weather Statement | OUN | 25 min |
| May 28, 12:40 AM CDT | Special Weather Statement | OUN | 35 min |
| May 28, 3:07 AM CDT | Areal Flood Advisory | OUN | 5 hr |
| Jun 7, 8:25 PM CDT | Special Weather Statement | OUN | 35 min |
| Jun 12, 2:56 AM CDT | Flash Flood Watch | OUN | 49 hr |
| Jun 12, 3:13 AM CDT | Special Weather Statement | OUN | 47 min |
| Jun 12, 3:55 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 12, 6:23 PM CDT | Mesoscale Discussion | SPC | 97 min |
| Jun 14, 7:52 PM CDT | Special Weather Statement | OUN | 38 min |
| Jun 26, 5:24 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jul 1, 3:30 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 1, 7:15 PM CDT | Special Weather Statement | OUN | 45 min |
| Jul 2, 2:37 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 2, 3:21 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 6, 3:36 AM CDT | Flash Flood Watch | OUN | 63 hr |
| Jul 6, 2:22 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 6, 5:57 PM CDT | Severe Thunderstorm Warning | OUN | 48 min |
| Jul 6, 6:20 PM CDT | Mesoscale Discussion | SPC | 115 min |
| Jul 6, 6:33 PM CDT | Areal Flood Advisory | OUN | 4 hr |
| Jul 7, 1:29 AM CDT | Areal Flood Advisory | OUN | 2 hr |
| Jul 11, 3:49 AM CDT | Heat Advisory | OUN | 4 days |
| Jul 15, 4:18 AM CDT | Heat Advisory | OUN | 16 hr |
| Jul 16, 11:07 PM CDT | Special Weather Statement | OUN | 23 min |
| Jul 17, 1:54 PM CDT | Special Weather Statement | OUN | 36 min |
| Jul 20, 2:06 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 20, 7:05 PM CDT | Special Weather Statement | OUN | 55 min |
| Jul 20, 7:18 PM CDT | Severe Thunderstorm Warning | OUN | 42 min |
| Jul 23, 4:41 AM CDT | Heat Advisory | OUN | 15 hr |
| Jul 23, 2:53 PM CDT | Heat Advisory | OUN | 29 hr |
| Jul 29, 5:03 PM CDT | Special Weather Statement | OUN | 42 min |
| Aug 5, 3:14 PM CDT | Heat Advisory | OUN | 29 hr |
| Aug 6, 2:35 PM CDT | Heat Advisory | OUN | 29 hr |
| Aug 7, 2:18 PM CDT | Heat Advisory | OUN | 30 hr |
| Aug 9, 10:40 AM CDT | Special Weather Statement | OUN | 50 min |
| Aug 18, 2:56 AM CDT | Special Weather Statement | OUN | 34 min |
| Aug 18, 2:11 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 18, 3:06 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Aug 18, 5:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| Aug 21, 7:45 PM CDT | Special Weather Statement | OUN | 30 min |
| Aug 21, 8:07 PM CDT | Severe Thunderstorm Warning | OUN | 38 min |
| Aug 21, 8:36 PM CDT | Severe Thunderstorm Warning | OUN | 39 min |
| Aug 21, 9:09 PM CDT | Severe Thunderstorm Warning | OUN | 51 min |
| Aug 21, 9:20 PM CDT | Severe Thunderstorm Warning | OUN | 40 min |
| Aug 21, 9:53 PM CDT | Severe Thunderstorm Warning | OUN | 37 min |
| Sep 10, 11:20 PM CDT | Special Weather Statement | OUN | 40 min |
| Sep 11, 2:38 AM CDT | Special Weather Statement | OUN | 52 min |
| Sep 11, 3:12 AM CDT | Severe Thunderstorm Warning | OUN | 48 min |
| Sep 13, 10:29 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Sep 14, 3:51 AM CDT | Wind Advisory | OUN | 15 hr |
| Sep 18, 8:40 AM CDT | Special Weather Statement | OUN | 50 min |
| Sep 18, 9:11 AM CDT | Severe Thunderstorm Warning | OUN | 34 min |
| Sep 18, 9:46 AM CDT | Severe Thunderstorm Warning | OUN | 24 min |
| Sep 18, 3:07 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 18, 3:37 PM CDT | Special Weather Statement | OUN | 23 min |
| Sep 18, 4:08 PM CDT | Special Weather Statement | OUN | 22 min |
| Sep 18, 4:30 PM CDT | Special Weather Statement | OUN | 30 min |
| Oct 21, 4:28 AM CDT | Flash Flood Watch | OUN | 3 days |
| Oct 24, 8:37 PM CDT | Frost Advisory | OUN | 12 hr |
| Oct 25, 1:43 PM CDT | Frost Advisory | OUN | 19 hr |
| Nov 6, 3:14 PM CST | Frost Advisory | OUN | 17 hr |
| Nov 7, 2:03 PM CST | Frost Advisory | OUN | 19 hr |
| Nov 9, 3:20 PM CST | High Wind Watch | OUN | 37 hr |
| Nov 10, 3:11 PM CST | Wind Advisory | OUN | 27 hr |
| Nov 11, 4:06 AM CST | Red Flag Warning | OUN | 14 hr |
| Nov 11, 6:05 PM CST | Frost Advisory | OUN | 14 hr |
| Nov 11, 6:05 PM CST | Freeze Watch | OUN | 21 hr |
| Nov 12, 3:02 PM CST | Freeze Warning | OUN | 17 hr |
| Nov 16, 8:17 PM CST | Tornado Watch | SPC | 7 hr |
| Nov 16, 10:19 PM CST | Mesoscale Discussion | SPC | 86 min |
| Nov 16, 11:59 PM CST | Special Weather Statement | OUN | 31 min |
| Nov 17, 12:10 AM CST | Severe Thunderstorm Warning | OUN | 35 min |
| Nov 20, 3:48 AM CST | Wind Advisory | OUN | 29 hr |
| Nov 20, 2:24 PM CST | Freeze Watch | OUN | 13 hr |
| Nov 21, 3:43 AM CST | Freeze Warning | OUN | 29 hr |
| Nov 24, 4:24 PM CST | Winter Storm Watch | OUN | 36 hr |
| Nov 26, 4:25 AM CST | Ice Storm Warning | OUN | 71 hr |
| Nov 26, 7:18 PM CST | Mesoscale Discussion | SPC | 6 hr |
| Nov 27, 2:32 AM CST | Mesoscale Discussion | SPC | 5 hr |
| Nov 27, 8:14 PM CST | Mesoscale Discussion | SPC | 5 hr |
| Nov 28, 10:57 AM CST | Winter Weather Advisory | OUN | 25 hr |
| Dec 24, 3:35 PM CST | Winter Storm Watch | OUN | 49 hr |
| Dec 25, 4:50 PM CST | Winter Storm Warning | OUN | 65 hr |
| Dec 26, 4:31 PM CST | Ice Storm Warning | OUN | 23 hr |
| Dec 27, 3:38 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 27, 9:50 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Dec 30, 8:34 PM CST | Freezing Fog Advisory | OUN | 12 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 | 35 |
| Tornado Warning | 4 |
| Severe Thunderstorm Watch | 8 |
| Tornado Watch | 6 |
| Mesoscale Discussion | 39 |
| Special Weather Statement | 41 |
| Flooding | |
| Flash Flood Watch | 6 |
| Flood Watch | 2 |
| Areal Flood Advisory | 6 |
| Winter | |
| Ice Storm Warning | 2 |
| Winter Storm Warning | 1 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 8 |
| Heat | |
| Heat Advisory | 7 |
| Cold | |
| Freeze Warning | 3 |
| Freeze Watch | 2 |
| Frost Advisory | 5 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| High Wind Watch | 1 |
| Wind Advisory | 10 |
| Fire | |
| Red Flag Warning | 2 |
| Fire Weather Watch | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 3 |
| Freezing Fog Advisory | 1 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20142016
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.