Alert archive / Illinois / Montgomery County
Weather alerts in Montgomery County, Illinois, 2025
101 weather alerts in 2025, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Montgomery County and its neighbors
Each county as a circle sized by its count in 2025. Tap one for its archive.
- Alerts
- 101
- Warnings
- 23
- Watches
- 20
- Advisories
- 35
- Busiest month
- March21 alerts
- Busiest day
- March 15, 20257 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 Montgomery County in 2025 had a tornado report inside them.
Montgomery County, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 10 | 5 | 50% | 7 | 14% | 8 min |
| Flash flood warnings | 1 | 0 | 100% | 0 |
Each office's whole area, 2025
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS St. Louis, MO: tornado warnings | 93 | 34 | 63% | 66 | 76% | 16 min |
| NWS St. Louis, MO: severe thunderstorm warnings | 231 | 103 | 55% | 633 | 67% | 23 min |
| NWS St. Louis, MO: flash flood warnings | 51 | 19 | 63% | 98 | 67% | 105 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 2, 2:29 PM CST | Winter Storm Watch | LSX | 23 hr |
| Jan 3, 1:29 PM CST | Winter Storm Warning | LSX | 65 hr |
| Jan 5, 7:27 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 8, 1:59 PM CST | Winter Weather Advisory | LSX | 52 hr |
| Jan 19, 2:45 AM CST | Cold Weather Advisory | LSX | 31 hr |
| Jan 20, 2:45 AM CST | Cold Weather Advisory | LSX | 36 hr |
| Jan 21, 2:12 AM CST | Cold Weather Advisory | LSX | 28 hr |
| Jan 30, 8:26 PM CST | Dense Fog Advisory | LSX | 11 hr |
| Feb 11, 3:21 AM CST | Winter Weather Advisory | LSX | 39 hr |
| Feb 12, 6:16 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Feb 17, 2:09 AM CST | Cold Weather Advisory | LSX | 34 hr |
| Feb 18, 12:30 PM CST | Cold Weather Advisory | LSX | 48 hr |
| Feb 28, 2:31 AM CST | Red Flag Warning | LSX | 17 hr |
| Mar 3, 2:11 PM CST | Wind Advisory | LSX | 35 hr |
| Mar 5, 1:08 AM CST | High Wind Warning | LSX | 10 hr |
| Mar 5, 1:19 AM CST | Wind Advisory | LSX | 17 hr |
| Mar 13, 2:08 AM CDT | Wind Advisory | LSX | 47 hr |
| Mar 14, 7:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 14, 8:02 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 14, 9:57 PM CDT | Severe Thunderstorm Warning | LSX | 48 min |
| Mar 14, 10:27 PM CDT | Tornado Warning | LSX | 28 min |
| Mar 14, 10:38 PM CDT | Severe Thunderstorm Warning | LSX | 52 min |
| Mar 14, 10:40 PM CDT | Severe Thunderstorm Warning | LSX | 28 min |
| Mar 14, 10:42 PM CDT | Mesoscale Discussion | SPC | 63 min |
| Mar 18, 1:18 PM CDT | Wind Advisory | LSX | 38 hr |
| Mar 18, 9:07 PM CDT | Red Flag Warning | LSX | 22 hr |
| Mar 19, 11:21 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 19, 12:16 PM CDT | Tornado Watch | SPC | 9 hr |
| Mar 19, 5:37 PM CDT | Severe Thunderstorm Warning | LSX | 23 min |
| Mar 20, 2:30 PM CDT | Red Flag Warning | LSX | 29 hr |
| Mar 30, 11:04 AM CDT | Mesoscale Discussion | SPC | 116 min |
| Mar 30, 12:02 PM CDT | Tornado Watch | SPC | 7 hr |
| Mar 30, 12:17 PM CDT | Severe Thunderstorm Warning | LSX | 43 min |
| Mar 30, 2:35 PM CDT | Tornado Watch | SPC | 8 hr |
| Apr 1, 1:53 PM CDT | Flood Watch | LSX | 4 days |
| Apr 1, 2:00 PM CDT | Wind Advisory | LSX | 28 hr |
| Apr 2, 8:47 AM CDT | Tornado Watch | SPC | 9 hr |
| Apr 2, 2:43 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 2, 4:19 PM CDT | Tornado Watch | SPC | 3 hr |
| Apr 2, 5:11 PM CDT | Severe Thunderstorm Warning | LSX | 64 min |
| Apr 2, 5:16 PM CDT | Tornado Warning | LSX | 44 min |
| Apr 4, 7:23 PM CDT | Areal Flood Advisory | LSX | 90 min |
| Apr 4, 8:55 PM CDT | Areal Flood Warning | LSX | 6 hr |
| Apr 6, 2:24 AM CDT | Freeze Watch | LSX | 23 hr |
| Apr 7, 1:23 AM CDT | Freeze Warning | LSX | 32 hr |
| Apr 11, 1:22 PM CDT | Frost Advisory | LSX | 19 hr |
| Apr 17, 1:54 PM CDT | Flood Watch | LSX | 3 days |
| Apr 18, 2:53 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 20, 3:41 PM CDT | Tornado Watch | SPC | 7 hr |
| Apr 20, 7:46 PM CDT | Mesoscale Discussion | SPC | 89 min |
| Apr 30, 4:40 PM CDT | Tornado Watch | SPC | 5 hr |
| Apr 30, 7:56 PM CDT | Severe Thunderstorm Warning | LSX | 19 min |
| May 13, 2:44 AM CDT | Dense Fog Advisory | LSX | 5 hr |
| May 15, 7:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| May 16, 11:58 AM CDT | Tornado Watch | SPC | 8 hr |
| May 16, 3:07 PM CDT | Severe Thunderstorm Warning | LSX | 38 min |
| May 19, 8:26 PM CDT | Tornado Watch | SPC | 7 hr |
| May 20, 12:03 AM CDT | Areal Flood Advisory | LSX | 6 hr |
| May 20, 1:44 PM CDT | Mesoscale Discussion | SPC | 106 min |
| Jun 4, 1:43 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 7, 12:17 AM CDT | Dense Fog Advisory | LSX | 9 hr |
| Jun 18, 7:59 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 18, 9:46 AM CDT | Tornado Watch | SPC | 6 hr |
| Jun 19, 1:56 PM CDT | Heat Advisory | LSX | 7 days |
| Jul 6, 12:09 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 13, 1:18 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 17, 3:00 AM CDT | Severe Thunderstorm Warning | LSX | 30 min |
| Jul 18, 2:06 PM CDT | Extreme Heat Watch | LSX | 4 days |
| Jul 20, 1:44 AM CDT | Flood Watch | LSX | 33 hr |
| Jul 20, 6:23 PM CDT | Tornado Warning | LSX | 25 min |
| Jul 21, 12:12 AM CDT | Flash Flood Warning | LSX | 3 hr |
| Jul 21, 1:57 PM CDT | Heat Advisory | LSX | 9 days |
| Jul 26, 1:21 PM CDT | Mesoscale Discussion | SPC | 114 min |
| Jul 30, 12:02 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 12, 2:44 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 14, 2:34 PM CDT | Heat Advisory | LSX | 5 days |
| Sep 14, 3:12 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 20, 3:47 PM CDT | Severe Thunderstorm Warning | LSX | 28 min |
| Sep 21, 4:43 PM CDT | Mesoscale Discussion | SPC | 92 min |
| Oct 22, 12:00 PM CDT | Frost Advisory | LSX | 21 hr |
| Oct 23, 2:58 AM CDT | Frost Advisory | LSX | 30 hr |
| Oct 31, 2:16 AM CDT | Freeze Watch | LSX | 36 hr |
| Nov 1, 1:55 AM CDT | Freeze Warning | LSX | 31 hr |
| Nov 20, 7:22 PM CST | Dense Fog Advisory | LSX | 16 hr |
| Nov 23, 5:41 PM CST | Dense Fog Advisory | LSX | 15 hr |
| Nov 27, 3:25 AM CST | Winter Storm Watch | LSX | 23 hr |
| Nov 28, 2:17 AM CST | Winter Storm Warning | LSX | 39 hr |
| Nov 29, 3:18 AM CST | Mesoscale Discussion | SPC | 4 hr |
| Nov 30, 12:51 PM CST | Winter Weather Advisory | LSX | 38 hr |
| Dec 9, 1:17 PM CST | Wind Advisory | LSX | 23 hr |
| Dec 11, 1:32 PM CST | Winter Weather Advisory | LSX | 10 hr |
| Dec 12, 12:53 PM CST | Cold Weather Advisory | LSX | 47 hr |
| Dec 12, 1:20 PM CST | Winter Weather Advisory | LSX | 29 hr |
| Dec 18, 1:56 AM CST | Wind Advisory | LSX | 22 hr |
| Dec 18, 10:44 AM CST | Mesoscale Discussion | SPC | 2 hr |
| Dec 23, 9:53 PM CST | Dense Fog Advisory | LSX | 11 hr |
| Dec 24, 12:49 PM CST | Dense Fog Advisory | LSX | 41 hr |
| Dec 26, 7:29 PM CST | Dense Fog Advisory | LSX | 17 hr |
| Dec 28, 8:01 AM CST | Wind Advisory | LSX | 22 hr |
| Dec 28, 1:18 PM CST | Mesoscale Discussion | SPC | 117 min |
| Dec 28, 2:47 PM CST | Tornado Watch | SPC | 6 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 | 10 |
| Tornado Warning | 3 |
| Tornado Watch | 12 |
| Mesoscale Discussion | 23 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 1 |
| Flood Watch | 3 |
| Areal Flood Advisory | 2 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 5 |
| Heat | |
| Extreme Heat Watch | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Cold Weather Advisory | 6 |
| Frost Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 8 |
| Fire | |
| Red Flag Warning | 3 |
| Fog and smoke | |
| Dense Fog Advisory | 8 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20242026
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.