Alert archive / South Dakota / Fall River County
Weather alerts in Fall River County, South Dakota, 2013
176 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Fall River County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 176
- Warnings
- 45
- Watches
- 28
- Advisories
- 25
- Busiest month
- August39 alerts
- Busiest day
- July 23, 20138 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Fall River County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 37 | 30 | 19% | 27 | 89% | 24 min |
| Flash flood warnings | 2 | 0 | 100% | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Rapid City, SD: tornado warnings | 10 | 1 | 90% | 3 | 33% | 4 min |
| NWS Rapid City, SD: severe thunderstorm warnings | 502 | 363 | 28% | 673 | 90% | 23 min |
| NWS Rapid City, SD: flash flood warnings | 24 | 5 | 79% | 14 | 93% | 46 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, Mountain Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 9, 2:52 AM MST | Winter Storm Watch | UNR | 36 hr |
| Jan 10, 2:56 PM MST | Winter Storm Warning | UNR | 37 hr |
| Jan 11, 4:32 AM MST | Winter Weather Advisory | UNR | 30 hr |
| Jan 11, 11:08 AM MST | Mesoscale Discussion | SPC | 6 hr |
| Feb 7, 2:45 PM MST | Winter Storm Watch | UNR | 38 hr |
| Feb 9, 4:30 AM MST | Winter Storm Warning | UNR | 42 hr |
| Feb 9, 4:30 AM MST | Winter Weather Advisory | UNR | 42 hr |
| Feb 12, 2:32 PM MST | Wind Advisory | UNR | 49 hr |
| Mar 3, 2:15 PM MST | Wind Advisory | UNR | 40 hr |
| Mar 16, 3:28 AM MDT | High Wind Watch | UNR | 24 hr |
| Mar 17, 3:10 AM MDT | Wind Advisory | UNR | 33 hr |
| Mar 22, 3:33 PM MDT | Winter Weather Advisory | UNR | 11 hr |
| Apr 7, 2:46 AM MDT | Winter Storm Watch | UNR | 36 hr |
| Apr 8, 4:32 AM MDT | Winter Storm Warning | UNR | 70 hr |
| Apr 9, 5:46 PM MDT | Mesoscale Discussion | SPC | 5 hr |
| Apr 13, 3:14 PM MDT | Wind Advisory | UNR | 29 hr |
| Apr 15, 3:40 AM MDT | Winter Storm Watch | UNR | 24 hr |
| Apr 16, 3:35 AM MDT | Winter Storm Warning | UNR | 35 hr |
| Apr 16, 3:35 AM MDT | Winter Weather Advisory | UNR | 47 hr |
| Apr 21, 3:51 AM MDT | Winter Weather Advisory | UNR | 35 hr |
| Apr 21, 5:03 PM MDT | Special Weather Statement | UNR | 42 min |
| May 16, 5:15 PM MDT | Special Weather Statement | CYS | 30 min |
| May 17, 2:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| May 17, 3:03 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 17, 4:22 PM MDT | Severe Thunderstorm Warning | UNR | 53 min |
| May 17, 5:00 PM MDT | Special Weather Statement | UNR | 45 min |
| May 17, 6:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| May 17, 9:26 PM MDT | Mesoscale Discussion | SPC | 64 min |
| May 18, 2:31 PM MDT | Mesoscale Discussion | SPC | 59 min |
| May 18, 2:55 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 18, 9:14 PM MDT | Mesoscale Discussion | SPC | 61 min |
| May 19, 2:05 PM MDT | Wind Advisory | UNR | 46 hr |
| May 25, 11:43 AM MDT | Mesoscale Discussion | SPC | 92 min |
| May 25, 1:52 PM MDT | Tornado Watch | SPC | 8 hr |
| May 26, 2:49 PM MDT | Mesoscale Discussion | SPC | 56 min |
| May 27, 11:36 AM MDT | Mesoscale Discussion | SPC | 54 min |
| May 27, 11:51 AM MDT | Severe Thunderstorm Watch | SPC | 10 hr |
| May 27, 3:52 PM MDT | Mesoscale Discussion | SPC | 83 min |
| May 27, 6:11 PM MDT | Mesoscale Discussion | SPC | 94 min |
| May 27, 6:22 PM MDT | Severe Thunderstorm Warning | UNR | 38 min |
| May 27, 6:42 PM MDT | Severe Thunderstorm Warning | UNR | 48 min |
| May 27, 7:27 PM MDT | Severe Thunderstorm Warning | UNR | 63 min |
| May 28, 2:08 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 28, 3:31 PM MDT | Special Weather Statement | CYS | 44 min |
| May 28, 4:20 PM MDT | Special Weather Statement | UNR | 25 min |
| May 28, 6:52 PM MDT | Mesoscale Discussion | SPC | 113 min |
| May 31, 3:03 AM MDT | Wind Advisory | UNR | 16 hr |
| Jun 10, 6:02 PM MDT | Special Weather Statement | UNR | 43 min |
| Jun 10, 6:23 PM MDT | Special Weather Statement | UNR | 22 min |
| Jun 11, 4:06 PM MDT | Mesoscale Discussion | SPC | 84 min |
| Jun 11, 6:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 11, 8:15 PM MDT | Severe Thunderstorm Warning | UNR | 60 min |
| Jun 11, 8:16 PM MDT | Mesoscale Discussion | SPC | 59 min |
| Jun 11, 9:49 PM MDT | Severe Thunderstorm Warning | UNR | 56 min |
| Jun 11, 10:40 PM MDT | Severe Thunderstorm Warning | UNR | 65 min |
| Jun 13, 9:05 PM MDT | Special Weather Statement | UNR | 25 min |
| Jun 14, 11:34 PM MDT | Special Weather Statement | UNR | 26 min |
| Jun 16, 12:47 PM MDT | Severe Thunderstorm Warning | UNR | 58 min |
| Jun 16, 1:34 PM MDT | Severe Thunderstorm Warning | UNR | 71 min |
| Jun 17, 4:16 PM MDT | Severe Thunderstorm Warning | UNR | 59 min |
| Jun 17, 6:32 PM MDT | Severe Thunderstorm Warning | UNR | 73 min |
| Jun 18, 6:29 PM MDT | Special Weather Statement | UNR | 31 min |
| Jun 19, 10:50 PM MDT | Special Weather Statement | UNR | 25 min |
| Jun 19, 11:57 PM MDT | Special Weather Statement | UNR | 48 min |
| Jun 21, 8:09 AM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 11:01 AM MDT | Mesoscale Discussion | SPC | 89 min |
| Jun 21, 1:48 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 21, 4:42 PM MDT | Severe Thunderstorm Warning | UNR | 33 min |
| Jun 21, 5:09 PM MDT | Severe Thunderstorm Warning | UNR | 66 min |
| Jun 21, 5:58 PM MDT | Severe Thunderstorm Warning | UNR | 62 min |
| Jun 21, 8:39 PM MDT | Mesoscale Discussion | SPC | 36 min |
| Jun 22, 1:45 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Jun 22, 2:13 PM MDT | Tornado Watch | SPC | 6 hr |
| Jun 22, 7:03 PM MDT | Areal Flood Advisory | UNR | 6 hr |
| Jun 24, 1:21 PM MDT | Mesoscale Discussion | SPC | 114 min |
| Jun 24, 2:26 PM MDT | Special Weather Statement | UNR | 34 min |
| Jun 24, 2:44 PM MDT | Severe Thunderstorm Warning | UNR | 61 min |
| Jul 6, 7:38 PM MDT | Special Weather Statement | UNR | 52 min |
| Jul 6, 8:11 PM MDT | Severe Thunderstorm Warning | UNR | 64 min |
| Jul 7, 4:12 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 7, 5:03 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 7, 8:14 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 2:19 AM MDT | Severe Thunderstorm Warning | UNR | 41 min |
| Jul 8, 8:42 AM MDT | Areal Flood Advisory | UNR | 12 hr |
| Jul 8, 1:51 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Jul 8, 3:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 8, 4:01 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 8, 7:42 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 10, 4:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Jul 10, 6:36 PM MDT | Severe Thunderstorm Warning | UNR | 69 min |
| Jul 10, 7:47 PM MDT | Severe Thunderstorm Warning | UNR | 88 min |
| Jul 18, 2:27 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jul 20, 1:06 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 20, 2:19 PM MDT | Severe Thunderstorm Warning | UNR | 56 min |
| Jul 20, 4:03 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 20, 7:23 PM MDT | Mesoscale Discussion | SPC | 97 min |
| Jul 21, 4:27 PM MDT | Mesoscale Discussion | SPC | 63 min |
| Jul 22, 4:12 PM MDT | Mesoscale Discussion | SPC | 93 min |
| Jul 22, 5:30 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 22, 7:53 PM MDT | Severe Thunderstorm Warning | UNR | 67 min |
| Jul 22, 8:40 PM MDT | Severe Thunderstorm Warning | UNR | 35 min |
| Jul 22, 9:23 PM MDT | Mesoscale Discussion | SPC | 67 min |
| Jul 22, 11:34 PM MDT | Mesoscale Discussion | SPC | 56 min |
| Jul 23, 2:44 PM MDT | Severe Thunderstorm Warning | UNR | 61 min |
| Jul 23, 3:43 PM MDT | Severe Thunderstorm Warning | UNR | 62 min |
| Jul 23, 3:45 PM MDT | Mesoscale Discussion | SPC | 60 min |
| Jul 23, 4:01 PM MDT | Severe Thunderstorm Warning | UNR | 59 min |
| Jul 24, 12:18 PM MDT | Mesoscale Discussion | SPC | 87 min |
| Jul 24, 6:43 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Jul 26, 7:44 AM MDT | Special Weather Statement | UNR | 46 min |
| Jul 29, 11:29 PM MDT | Special Weather Statement | UNR | 46 min |
| Jul 30, 5:40 PM MDT | Special Weather Statement | UNR | 50 min |
| Jul 30, 6:32 PM MDT | Severe Thunderstorm Warning | UNR | 58 min |
| Jul 30, 7:12 PM MDT | Severe Thunderstorm Warning | UNR | 78 min |
| Aug 1, 11:53 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 1, 2:25 PM MDT | Mesoscale Discussion | SPC | 95 min |
| Aug 1, 2:59 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| Aug 1, 7:06 PM MDT | Mesoscale Discussion | SPC | 54 min |
| Aug 1, 9:14 PM MDT | Severe Thunderstorm Warning | UNR | 76 min |
| Aug 3, 4:23 AM MDT | Mesoscale Discussion | SPC | 97 min |
| Aug 3, 4:46 AM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 3, 6:25 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 5, 2:04 AM MDT | Mesoscale Discussion | SPC | 56 min |
| Aug 5, 2:14 AM MDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 5, 2:31 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Aug 5, 6:56 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 7, 4:13 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 7, 5:02 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Aug 7, 6:49 PM MDT | Mesoscale Discussion | SPC | 86 min |
| Aug 7, 7:05 PM MDT | Areal Flood Advisory | UNR | 3 hr |
| Aug 7, 7:38 PM MDT | Flash Flood Warning | UNR | 6 hr |
| Aug 7, 7:59 PM MDT | Severe Thunderstorm Warning | UNR | 61 min |
| Aug 7, 8:27 PM MDT | Severe Thunderstorm Warning | UNR | 63 min |
| Aug 7, 9:20 PM MDT | Severe Thunderstorm Warning | UNR | 25 min |
| Aug 7, 10:05 PM MDT | Mesoscale Discussion | SPC | 55 min |
| Aug 9, 4:24 AM MDT | Flash Flood Watch | UNR | 23 hr |
| Aug 10, 10:28 PM MDT | Mesoscale Discussion | SPC | 92 min |
| Aug 11, 2:37 PM MDT | Mesoscale Discussion | SPC | 53 min |
| Aug 11, 4:58 PM MDT | Severe Thunderstorm Warning | UNR | 77 min |
| Aug 11, 5:21 PM MDT | Severe Thunderstorm Warning | UNR | 69 min |
| Aug 11, 5:28 PM MDT | Areal Flood Advisory | UNR | 6 hr |
| Aug 13, 1:17 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 13, 4:45 PM MDT | Mesoscale Discussion | SPC | 90 min |
| Aug 13, 7:15 PM MDT | Severe Thunderstorm Warning | UNR | 60 min |
| Aug 13, 7:46 PM MDT | Flash Flood Warning | UNR | 6 hr |
| Aug 14, 1:43 AM MDT | Areal Flood Advisory | UNR | 11 hr |
| Aug 22, 1:42 PM MDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 28, 7:44 PM MDT | Special Weather Statement | UNR | 31 min |
| Aug 28, 7:47 PM MDT | Severe Thunderstorm Warning | UNR | 58 min |
| Aug 28, 8:34 PM MDT | Severe Thunderstorm Warning | UNR | 56 min |
| Aug 30, 1:27 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 30, 1:54 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 30, 4:14 PM MDT | Severe Thunderstorm Warning | UNR | 46 min |
| Sep 4, 3:57 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 4, 7:48 PM MDT | Special Weather Statement | CYS | 42 min |
| Sep 8, 3:52 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 8, 6:47 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 8, 8:58 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 17, 4:43 PM MDT | Special Weather Statement | UNR | 32 min |
| Sep 18, 1:16 PM MDT | Mesoscale Discussion | SPC | 89 min |
| Sep 22, 4:10 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 30, 2:28 AM MDT | Wind Advisory | UNR | 12 hr |
| Oct 2, 3:52 AM MDT | Winter Storm Watch | UNR | 58 hr |
| Oct 3, 3:57 AM MDT | Winter Storm Warning | UNR | 62 hr |
| Oct 4, 7:04 AM MDT | Mesoscale Discussion | SPC | 4 hr |
| Oct 4, 12:43 PM MDT | Mesoscale Discussion | SPC | 6 hr |
| Oct 9, 3:00 PM MDT | High Wind Watch | UNR | 24 hr |
| Oct 10, 2:42 PM MDT | High Wind Warning | UNR | 27 hr |
| Oct 27, 3:17 PM MDT | Winter Weather Advisory | UNR | 42 hr |
| Oct 29, 2:01 PM MDT | Winter Weather Advisory | UNR | 22 hr |
| Nov 4, 3:04 AM MST | Winter Weather Advisory | UNR | 38 hr |
| Nov 20, 2:56 PM MST | Winter Weather Advisory | UNR | 24 hr |
| Dec 2, 2:10 PM MST | Winter Weather Advisory | UNR | 51 hr |
| Dec 4, 1:53 PM MST | Wind Chill Advisory | UNR | 4 days |
| Dec 8, 3:52 AM MST | Wind Chill Advisory | UNR | 31 hr |
| Dec 18, 4:10 AM MST | Winter Weather Advisory | UNR | 39 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 | 37 |
| Severe Thunderstorm Watch | 18 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 58 |
| Special Weather Statement | 20 |
| Flooding | |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 1 |
| Areal Flood Advisory | 5 |
| Winter | |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 5 |
| Winter Weather Advisory | 11 |
| Cold | |
| Wind Chill Advisory | 2 |
| Wind and dust | |
| High Wind Warning | 1 |
| High Wind Watch | 2 |
| Wind Advisory | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20122014
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.