Alert archive / Wyoming / Fremont County
Weather alerts in Fremont County, Wyoming, 2018
274 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Fremont County and its neighbors
Each county as a circle sized by its count in 2018. Tap one for its archive.
- Alerts
- 274
- Warnings
- 71
- Watches
- 48
- Advisories
- 45
- Busiest month
- May57 alerts
- Busiest day
- May 27, 201818 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 3 tornado warnings covering Fremont County in 2018 had a tornado report inside them.
Fremont County, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 17 | 1 | 94% | 3 | 0% | |
| Flash flood warnings | 5 | 0 | 100% | 0 |
Each office's whole area, 2018
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Riverton, WY: tornado warnings | 19 | 0 | 100% | 1 | 0% | |
| NWS Riverton, WY: severe thunderstorm warnings | 111 | 25 | 77% | 68 | 68% | 19 min |
| NWS Riverton, WY: flash flood warnings | 18 | 2 | 89% | 3 | 67% | 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 8, 2:33 AM MST | High Wind Watch | RIW | 10 hr |
| Jan 8, 2:41 AM MST | Winter Storm Watch | RIW | 10 hr |
| Jan 8, 12:30 PM MST | Winter Storm Warning | RIW | 48 hr |
| Jan 8, 12:30 PM MST | Winter Weather Advisory | RIW | 48 hr |
| Jan 8, 12:37 PM MST | High Wind Warning | RIW | 34 hr |
| Jan 10, 12:25 PM MST | Winter Weather Advisory | RIW | 53 hr |
| Jan 12, 12:41 AM MST | Winter Storm Warning | RIW | 16 hr |
| Jan 18, 12:14 PM MST | Winter Storm Watch | RIW | 23 hr |
| Jan 18, 12:14 PM MST | Winter Weather Advisory | RIW | 29 hr |
| Jan 19, 10:47 AM MST | Winter Storm Warning | RIW | 42 hr |
| Jan 19, 10:47 AM MST | Winter Weather Advisory | RIW | 42 hr |
| Jan 23, 12:09 PM MST | High Wind Watch | RIW | 14 hr |
| Jan 24, 2:05 AM MST | High Wind Warning | RIW | 39 hr |
| Jan 26, 2:09 PM MST | Winter Weather Advisory | RIW | 39 hr |
| Jan 28, 9:35 PM MST | High Wind Watch | RIW | 16 hr |
| Jan 29, 1:57 PM MST | High Wind Warning | RIW | 34 hr |
| Feb 1, 12:37 PM MST | Winter Weather Advisory | RIW | 38 hr |
| Feb 3, 1:07 AM MST | Special Weather Statement | RIW | 53 min |
| Feb 3, 2:31 AM MST | Winter Weather Advisory | RIW | 33 hr |
| Feb 4, 1:25 AM MST | Winter Storm Warning | RIW | 26 hr |
| Feb 4, 1:25 AM MST | Winter Weather Advisory | RIW | 40 hr |
| Feb 5, 12:16 AM MST | High Wind Warning | RIW | 4 hr |
| Feb 5, 12:35 AM MST | Special Weather Statement | RIW | 40 min |
| Feb 7, 12:25 PM MST | Winter Storm Watch | RIW | 23 hr |
| Feb 8, 2:33 AM MST | Winter Storm Warning | RIW | 38 hr |
| Feb 8, 2:33 AM MST | Winter Weather Advisory | RIW | 52 hr |
| Feb 12, 11:41 AM MST | High Wind Watch | RIW | 25 hr |
| Feb 13, 12:53 PM MST | High Wind Warning | RIW | 28 hr |
| Feb 14, 2:35 AM MST | Winter Weather Advisory | RIW | 35 hr |
| Feb 16, 2:50 AM MST | High Wind Watch | RIW | 35 hr |
| Feb 16, 2:50 AM MST | Winter Storm Watch | RIW | 43 hr |
| Feb 17, 2:59 AM MST | Winter Storm Warning | RIW | 65 hr |
| Feb 17, 3:19 AM MST | High Wind Warning | RIW | 26 hr |
| Feb 17, 2:34 PM MST | Winter Weather Advisory | RIW | 53 hr |
| Feb 20, 11:35 AM MST | Wind Chill Warning | RIW | 22 hr |
| Feb 25, 1:05 AM MST | High Wind Watch | RIW | 13 hr |
| Feb 25, 1:12 AM MST | Winter Weather Advisory | RIW | 49 hr |
| Feb 25, 10:20 AM MST | High Wind Warning | RIW | 20 hr |
| Mar 1, 8:18 PM MST | Winter Weather Advisory | RIW | 27 hr |
| Mar 1, 9:50 PM MST | High Wind Watch | RIW | 3 hr |
| Mar 2, 12:29 AM MST | High Wind Warning | RIW | 17 hr |
| Mar 3, 1:06 AM MST | Winter Weather Advisory | RIW | 40 hr |
| Mar 21, 12:45 PM MDT | Winter Weather Advisory | RIW | 41 hr |
| Mar 24, 2:17 AM MDT | Winter Storm Watch | RIW | 24 hr |
| Mar 25, 2:04 AM MDT | Winter Weather Advisory | RIW | 37 hr |
| Mar 27, 3:47 PM MDT | Winter Weather Advisory | RIW | 32 hr |
| Apr 1, 3:34 AM MDT | Winter Storm Watch | RIW | 23 hr |
| Apr 1, 3:51 AM MDT | High Wind Watch | RIW | 22 hr |
| Apr 1, 12:48 PM MDT | High Wind Warning | RIW | 31 hr |
| Apr 1, 12:51 PM MDT | Winter Storm Warning | RIW | 39 hr |
| Apr 2, 2:20 AM MDT | Winter Weather Advisory | RIW | 25 hr |
| Apr 4, 2:28 AM MDT | Winter Storm Watch | RIW | 24 hr |
| Apr 5, 2:47 AM MDT | Winter Weather Advisory | RIW | 33 hr |
| Apr 7, 9:16 PM MDT | Winter Weather Advisory | RIW | 28 hr |
| Apr 10, 2:15 PM MDT | Winter Storm Watch | RIW | 22 hr |
| Apr 11, 12:43 PM MDT | Winter Storm Warning | RIW | 36 hr |
| Apr 11, 12:43 PM MDT | Winter Weather Advisory | RIW | 45 hr |
| Apr 11, 12:56 PM MDT | High Wind Watch | RIW | 13 hr |
| Apr 12, 1:27 AM MDT | High Wind Warning | RIW | 19 hr |
| Apr 24, 1:32 PM MDT | Red Flag Warning | RIW | 29 hr |
| Apr 29, 2:40 AM MDT | Red Flag Warning | RIW | 17 hr |
| Apr 29, 2:41 AM MDT | Winter Storm Watch | RIW | 20 hr |
| Apr 29, 10:16 PM MDT | Winter Storm Warning | RIW | 32 hr |
| Apr 29, 10:16 PM MDT | Winter Weather Advisory | RIW | 32 hr |
| May 1, 8:36 PM MDT | Special Weather Statement | RIW | 24 min |
| May 6, 1:20 AM MDT | Fire Weather Watch | RIW | 25 hr |
| May 7, 2:19 AM MDT | Red Flag Warning | RIW | 16 hr |
| May 10, 1:00 PM MDT | Winter Storm Watch | RIW | 7 hr |
| May 10, 8:05 PM MDT | Winter Storm Warning | RIW | 57 hr |
| May 10, 8:05 PM MDT | Winter Weather Advisory | RIW | 53 hr |
| May 10, 10:16 PM MDT | Special Weather Statement | RIW | 59 min |
| May 10, 11:34 PM MDT | Special Weather Statement | RIW | 41 min |
| May 11, 3:36 PM MDT | Flood Watch | RIW | 37 hr |
| May 13, 8:00 PM MDT | Special Weather Statement | RIW | 30 min |
| May 14, 4:43 PM MDT | Areal Flood Advisory | RIW | 3 hr |
| May 17, 1:19 PM MDT | Special Weather Statement | RIW | 41 min |
| May 17, 1:49 PM MDT | Severe Thunderstorm Warning | RIW | 26 min |
| May 17, 2:09 PM MDT | Severe Thunderstorm Warning | RIW | 36 min |
| May 17, 2:11 PM MDT | Special Weather Statement | RIW | 49 min |
| May 17, 2:28 PM MDT | Special Weather Statement | RIW | 47 min |
| May 17, 2:35 PM MDT | Severe Thunderstorm Warning | RIW | 40 min |
| May 18, 3:46 PM MDT | Severe Thunderstorm Warning | RIW | 44 min |
| May 18, 5:10 PM MDT | Special Weather Statement | RIW | 35 min |
| May 18, 5:45 PM MDT | Special Weather Statement | RIW | 45 min |
| May 18, 6:08 PM MDT | Areal Flood Advisory | RIW | 3 hr |
| May 18, 6:25 PM MDT | Special Weather Statement | RIW | 50 min |
| May 22, 9:16 AM MDT | Flood Watch | RIW | 27 hr |
| May 22, 3:56 PM MDT | Special Weather Statement | RIW | 34 min |
| May 23, 12:24 PM MDT | Areal Flood Warning | RIW | 19 hr |
| May 24, 9:20 AM MDT | Areal Flood Advisory | RIW | 71 hr |
| May 26, 10:15 AM MDT | Flood Watch | RIW | 56 hr |
| May 27, 9:40 AM MDT | Areal Flood Warning | RIW | 47 hr |
| May 27, 10:24 AM MDT | Special Weather Statement | RIW | 36 min |
| May 27, 11:03 AM MDT | Special Weather Statement | RIW | 42 min |
| May 27, 11:19 AM MDT | Flash Flood Warning | RIW | 3 hr |
| May 27, 11:36 AM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 11:58 AM MDT | Special Weather Statement | RIW | 47 min |
| May 27, 12:01 PM MDT | Flash Flood Warning | RIW | 3 hr |
| May 27, 12:05 PM MDT | Severe Thunderstorm Watch | SPC | 9 hr |
| May 27, 12:18 PM MDT | Tornado Warning | RIW | 27 min |
| May 27, 12:45 PM MDT | Tornado Warning | RIW | 30 min |
| May 27, 12:52 PM MDT | Severe Thunderstorm Warning | RIW | 38 min |
| May 27, 1:01 PM MDT | Flash Flood Warning | RIW | 3 hr |
| May 27, 1:07 PM MDT | Special Weather Statement | RIW | 38 min |
| May 27, 1:13 PM MDT | Severe Thunderstorm Warning | RIW | 62 min |
| May 27, 2:03 PM MDT | Special Weather Statement | RIW | 42 min |
| May 27, 2:13 PM MDT | Tornado Warning | RIW | 47 min |
| May 27, 2:25 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| May 27, 2:52 PM MDT | Special Weather Statement | RIW | 38 min |
| May 28, 6:25 PM MDT | Special Weather Statement | RIW | 50 min |
| May 28, 7:01 PM MDT | Areal Flood Advisory | RIW | 3 hr |
| May 28, 7:24 PM MDT | Special Weather Statement | RIW | 36 min |
| May 29, 9:37 AM MDT | Areal Flood Advisory | RIW | 6 days |
| May 29, 12:41 PM MDT | Special Weather Statement | RIW | 49 min |
| May 29, 1:29 PM MDT | Special Weather Statement | RIW | 46 min |
| May 29, 2:15 PM MDT | Special Weather Statement | RIW | 30 min |
| May 29, 3:04 PM MDT | Special Weather Statement | RIW | 26 min |
| May 30, 8:52 AM MDT | Areal Flood Advisory | RIW | 8 days |
| May 30, 10:19 PM MDT | Special Weather Statement | RIW | 26 min |
| May 30, 11:14 PM MDT | Special Weather Statement | RIW | 31 min |
| May 30, 11:31 PM MDT | Special Weather Statement | RIW | 29 min |
| Jun 1, 9:48 AM MDT | Special Weather Statement | RIW | 27 min |
| Jun 1, 10:18 AM MDT | Special Weather Statement | RIW | 27 min |
| Jun 1, 10:29 AM MDT | Severe Thunderstorm Warning | RIW | 46 min |
| Jun 6, 1:35 PM MDT | Mesoscale Discussion | SPC | 115 min |
| Jun 6, 8:17 PM MDT | Special Weather Statement | RIW | 43 min |
| Jun 15, 8:37 PM MDT | Special Weather Statement | RIW | 23 min |
| Jun 15, 9:02 PM MDT | Special Weather Statement | RIW | 28 min |
| Jun 17, 2:54 AM MDT | Flood Watch | RIW | 45 hr |
| Jun 17, 11:14 PM MDT | Flash Flood Warning | RIW | 8 hr |
| Jun 18, 5:55 AM MDT | Areal Flood Advisory | RIW | 10 hr |
| Jun 18, 2:21 PM MDT | Special Weather Statement | RIW | 39 min |
| Jun 18, 4:06 PM MDT | Areal Flood Warning | RIW | 49 hr |
| Jun 19, 4:03 PM MDT | Special Weather Statement | RIW | 27 min |
| Jun 21, 5:48 PM MDT | Special Weather Statement | RIW | 27 min |
| Jun 22, 2:08 AM MDT | Flood Watch | RIW | 59 hr |
| Jun 23, 4:14 PM MDT | Mesoscale Discussion | SPC | 61 min |
| Jun 23, 5:26 PM MDT | Special Weather Statement | RIW | 34 min |
| Jun 23, 7:09 PM MDT | Special Weather Statement | RIW | 36 min |
| Jun 29, 11:23 AM MDT | Mesoscale Discussion | SPC | 97 min |
| Jun 30, 8:36 AM MDT | Special Weather Statement | RIW | 24 min |
| Jun 30, 9:05 AM MDT | Special Weather Statement | RIW | 25 min |
| Jun 30, 9:16 AM MDT | Severe Thunderstorm Warning | RIW | 29 min |
| Jun 30, 9:32 AM MDT | Special Weather Statement | RIW | 28 min |
| Jun 30, 9:55 AM MDT | Special Weather Statement | RIW | 35 min |
| Jul 3, 12:46 PM MDT | Special Weather Statement | RIW | 29 min |
| Jul 3, 1:16 PM MDT | Special Weather Statement | RIW | 29 min |
| Jul 10, 2:56 PM MDT | Special Weather Statement | RIW | 34 min |
| Jul 10, 6:28 PM MDT | Special Weather Statement | RIW | 32 min |
| Jul 10, 6:30 PM MDT | Special Weather Statement | RIW | 30 min |
| Jul 11, 1:20 PM MDT | Special Weather Statement | RIW | 25 min |
| Jul 11, 1:49 PM MDT | Severe Thunderstorm Warning | RIW | 41 min |
| Jul 11, 2:28 PM MDT | Flash Flood Warning | RIW | 4 hr |
| Jul 11, 2:37 PM MDT | Special Weather Statement | RIW | 23 min |
| Jul 11, 2:57 PM MDT | Flash Flood Watch | RIW | 7 hr |
| Jul 11, 3:20 PM MDT | Special Weather Statement | RIW | 25 min |
| Jul 12, 1:59 PM MDT | Severe Thunderstorm Warning | RIW | 35 min |
| Jul 16, 8:12 PM MDT | Special Weather Statement | RIW | 48 min |
| Jul 16, 8:52 PM MDT | Special Weather Statement | RIW | 38 min |
| Jul 16, 9:11 PM MDT | Special Weather Statement | RIW | 49 min |
| Jul 16, 9:43 PM MDT | Special Weather Statement | RIW | 32 min |
| Jul 16, 9:47 PM MDT | Special Weather Statement | RIW | 43 min |
| Jul 17, 5:52 PM MDT | Special Weather Statement | RIW | 23 min |
| Jul 21, 3:03 PM MDT | Special Weather Statement | RIW | 42 min |
| Jul 25, 2:48 PM MDT | Special Weather Statement | RIW | 27 min |
| Jul 25, 3:14 PM MDT | Special Weather Statement | RIW | 46 min |
| Jul 25, 3:46 PM MDT | Special Weather Statement | RIW | 44 min |
| Jul 25, 3:53 PM MDT | Special Weather Statement | RIW | 52 min |
| Jul 25, 4:20 PM MDT | Special Weather Statement | RIW | 40 min |
| Jul 25, 4:36 PM MDT | Severe Thunderstorm Warning | RIW | 14 min |
| Jul 25, 7:29 PM MDT | Special Weather Statement | RIW | 31 min |
| Jul 26, 6:08 PM MDT | Severe Thunderstorm Warning | RIW | 52 min |
| Jul 26, 7:25 PM MDT | Special Weather Statement | RIW | 35 min |
| Jul 26, 7:59 PM MDT | Special Weather Statement | RIW | 31 min |
| Jul 28, 4:23 PM MDT | Severe Thunderstorm Warning | RIW | 39 min |
| Jul 29, 12:53 PM MDT | Special Weather Statement | RIW | 37 min |
| Jul 29, 1:12 PM MDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 1:34 PM MDT | Special Weather Statement | RIW | 41 min |
| Jul 29, 3:31 PM MDT | Special Weather Statement | RIW | 44 min |
| Jul 29, 3:42 PM MDT | Severe Thunderstorm Warning | RIW | 28 min |
| Jul 29, 3:58 PM MDT | Special Weather Statement | RIW | 32 min |
| Jul 29, 5:15 PM MDT | Severe Thunderstorm Warning | RIW | 45 min |
| Jul 29, 7:04 PM MDT | Special Weather Statement | RIW | 26 min |
| Jul 29, 7:38 PM MDT | Special Weather Statement | RIW | 37 min |
| Aug 1, 2:41 PM MDT | Special Weather Statement | RIW | 49 min |
| Aug 1, 5:01 PM MDT | Special Weather Statement | RIW | 44 min |
| Aug 2, 12:42 PM MDT | Fire Weather Watch | RIW | 37 hr |
| Aug 2, 1:28 PM MDT | Special Weather Statement | RIW | 32 min |
| Aug 2, 2:09 PM MDT | Special Weather Statement | RIW | 36 min |
| Aug 2, 3:56 PM MDT | Special Weather Statement | RIW | 34 min |
| Aug 2, 7:53 PM MDT | Special Weather Statement | RIW | 22 min |
| Aug 2, 8:20 PM MDT | Special Weather Statement | RIW | 25 min |
| Aug 2, 9:29 PM MDT | Special Weather Statement | RIW | 31 min |
| Aug 3, 12:50 PM MDT | Special Weather Statement | RIW | 25 min |
| Aug 3, 1:43 PM MDT | Special Weather Statement | RIW | 47 min |
| Aug 3, 2:24 PM MDT | Special Weather Statement | RIW | 36 min |
| Aug 3, 2:57 PM MDT | Special Weather Statement | RIW | 48 min |
| Aug 3, 3:15 PM MDT | Special Weather Statement | RIW | 30 min |
| Aug 4, 1:47 AM MDT | Red Flag Warning | RIW | 43 hr |
| Aug 5, 3:37 PM MDT | Special Weather Statement | RIW | 23 min |
| Aug 5, 3:57 PM MDT | Special Weather Statement | RIW | 33 min |
| Aug 18, 1:57 PM MDT | Special Weather Statement | RIW | 33 min |
| Aug 18, 1:59 PM MDT | Special Weather Statement | RIW | 31 min |
| Aug 18, 2:10 PM MDT | Severe Thunderstorm Warning | RIW | 50 min |
| Aug 18, 3:04 PM MDT | Special Weather Statement | RIW | 26 min |
| Aug 18, 3:34 PM MDT | Special Weather Statement | RIW | 26 min |
| Aug 18, 3:36 PM MDT | Special Weather Statement | RIW | 24 min |
| Aug 18, 3:52 PM MDT | Severe Thunderstorm Warning | RIW | 38 min |
| Aug 20, 9:14 PM MDT | Special Weather Statement | RIW | 31 min |
| Aug 22, 2:04 PM MDT | Special Weather Statement | RIW | 26 min |
| Aug 22, 2:32 PM MDT | Special Weather Statement | RIW | 28 min |
| Aug 24, 1:16 PM MDT | Red Flag Warning | RIW | 56 hr |
| Aug 24, 4:01 PM MDT | Special Weather Statement | RIW | 29 min |
| Aug 24, 4:36 PM MDT | Special Weather Statement | RIW | 24 min |
| Aug 24, 4:50 PM MDT | Special Weather Statement | RIW | 40 min |
| Aug 24, 8:51 PM MDT | Fire Weather Watch | RIW | 17 hr |
| Aug 26, 12:49 PM MDT | Winter Weather Advisory | RIW | 41 hr |
| Aug 28, 2:13 AM MDT | Fire Weather Watch | RIW | 24 hr |
| Aug 28, 4:46 PM MDT | Freeze Warning | RIW | 15 hr |
| Aug 29, 1:57 AM MDT | Red Flag Warning | RIW | 42 hr |
| Aug 31, 1:37 AM MDT | Red Flag Warning | RIW | 18 hr |
| Sep 7, 1:30 PM MDT | Special Weather Statement | RIW | 30 min |
| Sep 8, 9:34 AM MDT | Special Weather Statement | RIW | 26 min |
| Sep 8, 10:05 AM MDT | Special Weather Statement | RIW | 25 min |
| Sep 8, 4:46 PM MDT | Special Weather Statement | RIW | 44 min |
| Sep 8, 5:19 PM MDT | Special Weather Statement | RIW | 41 min |
| Sep 8, 5:41 PM MDT | Special Weather Statement | RIW | 34 min |
| Sep 10, 1:39 AM MDT | Red Flag Warning | RIW | 17 hr |
| Sep 10, 11:15 AM MDT | Fire Weather Watch | RIW | 25 hr |
| Sep 11, 1:27 AM MDT | Red Flag Warning | RIW | 6 days |
| Sep 17, 1:43 AM MDT | Red Flag Warning | RIW | 4 days |
| Sep 17, 11:37 AM MDT | Fire Weather Watch | RIW | 14 hr |
| Sep 19, 1:48 AM MDT | Fire Weather Watch | RIW | 23 hr |
| Sep 21, 2:17 AM MDT | Fire Weather Watch | RIW | 11 hr |
| Sep 21, 1:33 PM MDT | Red Flag Warning | RIW | 3 days |
| Sep 23, 9:52 PM MDT | Special Weather Statement | RIW | 23 min |
| Sep 24, 1:53 AM MDT | Freeze Watch | RIW | 13 hr |
| Sep 24, 2:44 PM MDT | Freeze Warning | RIW | 18 hr |
| Sep 25, 2:40 AM MDT | Fire Weather Watch | RIW | 20 hr |
| Sep 25, 2:47 AM MDT | Freeze Warning | RIW | 30 hr |
| Sep 25, 10:10 PM MDT | Red Flag Warning | RIW | 5 days |
| Sep 27, 1:41 AM MDT | Winter Weather Advisory | RIW | 32 hr |
| Sep 28, 1:45 AM MDT | Fire Weather Watch | RIW | 12 hr |
| Oct 6, 1:55 PM MDT | Winter Weather Advisory | RIW | 58 hr |
| Oct 9, 2:47 AM MDT | Winter Storm Watch | RIW | 9 hr |
| Oct 9, 11:49 AM MDT | Winter Weather Advisory | RIW | 27 hr |
| Oct 12, 1:00 PM MDT | Winter Weather Advisory | RIW | 41 hr |
| Oct 28, 1:08 AM MDT | High Wind Watch | RIW | 10 hr |
| Oct 31, 2:11 AM MDT | Winter Weather Advisory | RIW | 31 hr |
| Nov 1, 11:15 AM MDT | High Wind Watch | RIW | 16 hr |
| Nov 2, 2:58 AM MDT | High Wind Warning | RIW | 21 hr |
| Nov 2, 1:17 PM MDT | Winter Storm Watch | RIW | 25 hr |
| Nov 2, 1:17 PM MDT | Winter Weather Advisory | RIW | 8 hr |
| Nov 3, 1:52 PM MDT | Winter Storm Warning | RIW | 32 hr |
| Nov 3, 1:52 PM MDT | Winter Weather Advisory | RIW | 32 hr |
| Nov 15, 9:55 PM MST | Winter Weather Advisory | RIW | 37 hr |
| Nov 21, 2:42 AM MST | Winter Storm Watch | RIW | 35 hr |
| Nov 22, 1:47 PM MST | Winter Storm Warning | RIW | 51 hr |
| Nov 23, 1:24 AM MST | Winter Weather Advisory | RIW | 43 hr |
| Nov 26, 9:58 PM MST | Winter Weather Advisory | RIW | 40 hr |
| Nov 29, 1:28 PM MST | Winter Storm Watch | RIW | 13 hr |
| Nov 30, 2:42 AM MST | Winter Weather Advisory | RIW | 47 hr |
| Dec 10, 11:46 AM MST | Winter Storm Watch | RIW | 24 hr |
| Dec 10, 12:01 PM MST | High Wind Watch | RIW | 15 hr |
| Dec 11, 2:52 AM MST | High Wind Watch | RIW | 24 hr |
| Dec 11, 2:52 AM MST | High Wind Warning | RIW | 42 hr |
| Dec 11, 11:21 AM MST | Winter Storm Warning | RIW | 28 hr |
| Dec 18, 12:44 AM MST | Winter Weather Advisory | RIW | 28 hr |
| Dec 18, 12:57 AM MST | High Wind Watch | RIW | 19 hr |
| Dec 18, 12:57 AM MST | High Wind Warning | RIW | 41 hr |
| Dec 28, 2:58 PM MST | Winter Storm Watch | RIW | 29 hr |
| Dec 29, 3:07 PM MST | Winter Storm Warning | RIW | 48 hr |
| Dec 29, 3:07 PM MST | Winter Weather Advisory | RIW | 48 hr |
| Dec 30, 3:12 PM MST | Winter Weather Advisory | RIW | 23 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20172019
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.