Alert archive / Indiana / Hamilton County
Weather alerts in Hamilton County, Indiana, 2008
166 weather alerts in 2008, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Hamilton County and its neighbors
Each county as a circle sized by its count in 2008. Tap one for its archive.
- Alerts
- 166
- Warnings
- 51
- Watches
- 39
- Advisories
- 37
- Busiest month
- June49 alerts
- Busiest day
- June 4, 200812 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Hamilton County, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 16 | 13 | 19% | 6 | 100% | 12 min |
| Flash flood warnings | 5 | 2 | 60% | 1 | 100% | 89 min |
Each office's whole area, 2008
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Indianapolis, IN: tornado warnings | 29 | 9 | 69% | 13 | 62% | 15 min |
| NWS Indianapolis, IN: severe thunderstorm warnings | 238 | 98 | 59% | 301 | 71% | 18 min |
| NWS Indianapolis, IN: flash flood warnings | 75 | 29 | 61% | 80 | 73% | 108 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, Eastern Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 2, 1:49 AM EST | Wind Chill Advisory | IND | 7 hr |
| Jan 7, 8:03 PM EST | Mesoscale Discussion | SPC | 117 min |
| Jan 9, 1:43 PM EST | River Flood Warning | IND | 46 hr |
| Jan 9, 9:44 PM EST | River Flood Warning | IND | 4 days |
| Jan 10, 11:20 AM EST | River Flood Warning | IND | 49 hr |
| Jan 10, 11:20 AM EST | River Flood Warning | IND | 6 days |
| Jan 18, 2:20 PM EST | Wind Chill Advisory | IND | 44 hr |
| Jan 28, 6:21 PM EST | Wind Advisory | IND | 33 hr |
| Jan 29, 5:40 PM EST | Severe Thunderstorm Watch | SPC | 3 hr |
| Jan 29, 6:58 PM EST | Severe Thunderstorm Warning | IND | 47 min |
| Jan 29, 7:46 PM EST | Severe Thunderstorm Warning | IND | 44 min |
| Jan 30, 4:04 AM EST | Wind Chill Advisory | IND | 6 hr |
| Jan 30, 4:04 AM EST | Winter Storm Watch | IND | 24 hr |
| Jan 31, 4:31 AM EST | Winter Storm Warning | IND | 33 hr |
| Jan 31, 7:23 PM EST | Mesoscale Discussion | SPC | 3 hr |
| Feb 4, 4:31 AM EST | Dense Fog Advisory | IND | 18 hr |
| Feb 4, 11:24 AM EST | River Flood Advisory | IND | 23 hr |
| Feb 4, 11:24 AM EST | River Flood Advisory | IND | 23 hr |
| Feb 4, 3:40 PM EST | Flood Watch | IND | 39 hr |
| Feb 5, 10:41 AM EST | River Flood Warning | IND | 4 days |
| Feb 5, 10:41 AM EST | River Flood Warning | IND | 4 days |
| Feb 5, 10:49 AM EST | Dense Fog Advisory | IND | 6 hr |
| Feb 5, 9:42 PM EST | Severe Thunderstorm Warning | IND | 48 min |
| Feb 9, 4:01 AM EST | Wind Chill Advisory | IND | 42 hr |
| Feb 10, 3:28 PM EST | Winter Storm Watch | IND | 13 hr |
| Feb 11, 4:13 AM EST | Snow Advisory | IND | 24 hr |
| Feb 11, 4:13 AM EST | Winter Storm Warning | IND | 24 hr |
| Feb 17, 12:35 PM EST | Wind Advisory | IND | 6 hr |
| Feb 17, 1:52 PM EST | Mesoscale Discussion | SPC | 83 min |
| Feb 21, 3:32 PM EST | Winter Storm Warning | IND | 20 hr |
| Feb 21, 3:32 PM EST | Winter Weather Advisory | IND | 30 hr |
| Feb 25, 11:25 AM EST | Winter Storm Watch | IND | 11 hr |
| Feb 25, 9:58 PM EST | Winter Weather Advisory | IND | 14 hr |
| Mar 2, 4:03 PM EST | Flood Watch | IND | 36 hr |
| Mar 3, 5:02 AM EST | Winter Storm Watch | IND | 11 hr |
| Mar 3, 4:08 PM EST | Winter Weather Advisory | IND | 32 hr |
| Mar 3, 8:31 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Mar 4, 11:47 AM EST | River Flood Warning | IND | 24 hr |
| Mar 4, 11:47 AM EST | River Flood Warning | IND | 42 hr |
| Mar 4, 3:51 PM EST | Winter Storm Warning | IND | 8 hr |
| Mar 6, 3:58 AM EST | Winter Storm Watch | IND | 24 hr |
| Mar 7, 3:34 AM EST | Snow and Blowing Snow Advisory | IND | 36 hr |
| Mar 17, 3:58 AM EDT | Flood Watch | IND | 64 hr |
| Mar 18, 1:29 PM EDT | River Flood Warning | IND | 4 days |
| Mar 18, 1:29 PM EDT | River Flood Warning | IND | 4 days |
| Apr 5, 6:20 AM EDT | Freezing Fog Advisory | IND | 4 hr |
| Apr 9, 3:07 PM EDT | Flood Watch | IND | 39 hr |
| Apr 11, 4:39 AM EDT | Wind Advisory | IND | 14 hr |
| Apr 12, 4:57 PM EDT | Freeze Watch | IND | 23 hr |
| Apr 13, 3:30 PM EDT | Freeze Watch | IND | 23 hr |
| Apr 13, 3:30 PM EDT | Freeze Warning | IND | 18 hr |
| Apr 14, 2:03 PM EDT | Freeze Warning | IND | 18 hr |
| Apr 28, 4:38 AM EDT | Freeze Watch | IND | 34 hr |
| Apr 29, 3:07 PM EDT | Frost Advisory | IND | 17 hr |
| May 2, 10:48 AM EDT | Mesoscale Discussion | SPC | 117 min |
| May 7, 8:03 PM EDT | River Flood Warning | IND | 15 hr |
| May 11, 3:32 AM EDT | Wind Advisory | IND | 18 hr |
| May 11, 6:35 AM EDT | Mesoscale Discussion | SPC | 115 min |
| May 13, 8:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 5:46 AM EDT | Areal Flood Advisory | IND | 119 min |
| May 27, 4:36 AM EDT | Dense Fog Advisory | IND | 5 hr |
| May 30, 2:56 PM EDT | Tornado Watch | SPC | 8 hr |
| May 30, 6:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| May 30, 8:27 PM EDT | Severe Thunderstorm Warning | IND | 48 min |
| May 30, 9:59 PM EDT | Areal Flood Warning | IND | 5 hr |
| May 30, 10:11 PM EDT | Severe Thunderstorm Warning | IND | 49 min |
| May 30, 10:16 PM EDT | Mesoscale Discussion | SPC | 29 min |
| May 30, 10:32 PM EDT | Severe Thunderstorm Warning | IND | 58 min |
| May 30, 10:58 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 30, 11:39 PM EDT | Severe Thunderstorm Warning | IND | 51 min |
| May 31, 12:35 AM EDT | Mesoscale Discussion | SPC | 55 min |
| Jun 1, 5:31 PM EDT | Severe Thunderstorm Warning | IND | 24 min |
| Jun 3, 11:05 AM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 3, 12:08 PM EDT | Tornado Watch | SPC | 5 hr |
| Jun 3, 3:34 PM EDT | Flash Flood Watch | IND | 20 hr |
| Jun 3, 7:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 3, 8:42 PM EDT | Tornado Watch | SPC | 6 hr |
| Jun 3, 10:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 4, 12:34 AM EDT | Mesoscale Discussion | SPC | 86 min |
| Jun 4, 3:00 AM EDT | Tornado Watch | SPC | 6 hr |
| Jun 4, 5:12 AM EDT | Flash Flood Warning | IND | 2 hr |
| Jun 4, 6:53 AM EDT | Flash Flood Warning | IND | 86 min |
| Jun 4, 12:44 PM EDT | River Flood Warning | IND | 59 hr |
| Jun 4, 2:33 PM EDT | River Flood Warning | IND | 3 days |
| Jun 4, 2:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 4, 4:36 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 4, 6:01 PM EDT | Flash Flood Watch | IND | 4 hr |
| Jun 4, 6:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Jun 6, 4:27 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 6, 5:30 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 6, 7:03 PM EDT | Severe Thunderstorm Warning | IND | 42 min |
| Jun 7, 12:19 PM EDT | Areal Flood Warning | IND | 3 hr |
| Jun 7, 3:28 PM EDT | Areal Flood Warning | IND | 3 hr |
| Jun 8, 3:30 PM EDT | Flash Flood Watch | IND | 39 hr |
| Jun 9, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 9, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 9, 4:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 9, 4:13 PM EDT | Severe Thunderstorm Warning | IND | 47 min |
| Jun 9, 4:16 PM EDT | Flash Flood Warning | IND | 3 hr |
| Jun 9, 11:25 PM EDT | Severe Thunderstorm Warning | IND | 35 min |
| Jun 9, 11:41 PM EDT | Flash Flood Warning | IND | 3 hr |
| Jun 9, 11:47 PM EDT | River Flood Warning | IND | 36 hr |
| Jun 9, 11:47 PM EDT | River Flood Warning | IND | 15 hr |
| Jun 10, 2:44 AM EDT | Areal Flood Warning | IND | 6 hr |
| Jun 12, 3:10 PM EDT | Flash Flood Watch | IND | 29 hr |
| Jun 13, 11:44 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 12:27 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 3:48 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Jun 15, 4:21 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 15, 6:00 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 15, 7:24 PM EDT | Severe Thunderstorm Warning | IND | 36 min |
| Jun 15, 7:39 PM EDT | Severe Thunderstorm Warning | IND | 51 min |
| Jun 21, 10:32 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 21, 11:52 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 21, 2:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 22, 11:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 25, 2:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 26, 3:31 PM EDT | Severe Thunderstorm Warning | IND | 44 min |
| Jun 27, 4:36 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 29, 12:40 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 8, 7:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jul 8, 7:52 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Jul 12, 8:01 AM EDT | Areal Flood Advisory | IND | 3 hr |
| Jul 12, 4:37 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 12, 5:28 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 12, 7:19 PM EDT | Flash Flood Warning | IND | 116 min |
| Jul 20, 1:43 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jul 20, 3:10 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 21, 5:21 AM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 21, 8:20 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 26, 2:58 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 31, 4:51 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Aug 1, 2:52 PM EDT | Mesoscale Discussion | SPC | 113 min |
| Aug 1, 10:17 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Aug 4, 12:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 4, 7:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Aug 5, 12:58 AM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 5, 8:44 AM EDT | Areal Flood Warning | IND | 3 hr |
| Sep 8, 8:04 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 8, 11:23 PM EDT | Severe Thunderstorm Warning | IND | 37 min |
| Sep 13, 4:28 AM EDT | Mesoscale Discussion | SPC | 92 min |
| Sep 14, 3:45 AM EDT | Wind Advisory | IND | 16 hr |
| Sep 14, 12:22 PM EDT | High Wind Warning | IND | 4 hr |
| Sep 20, 5:20 PM EDT | Severe Thunderstorm Warning | IND | 25 min |
| Oct 21, 3:22 PM EDT | Frost Advisory | IND | 17 hr |
| Oct 25, 3:10 PM EDT | Wind Advisory | IND | 29 hr |
| Oct 26, 2:44 AM EDT | Freeze Watch | IND | 24 hr |
| Oct 27, 2:22 AM EDT | Freeze Warning | IND | 32 hr |
| Oct 27, 2:50 PM EDT | Freeze Watch | IND | 23 hr |
| Oct 28, 2:13 PM EDT | Freeze Warning | IND | 19 hr |
| Oct 29, 3:03 PM EDT | Freeze Warning | IND | 18 hr |
| Nov 30, 6:47 AM EST | Winter Weather Advisory | IND | 4 hr |
| Dec 13, 12:34 PM EST | Wind Advisory | IND | 42 hr |
| Dec 15, 3:45 AM EST | Winter Weather Advisory | IND | 7 hr |
| Dec 16, 10:44 AM EST | Winter Weather Advisory | IND | 20 hr |
| Dec 17, 2:44 PM EST | Winter Weather Advisory | IND | 42 hr |
| Dec 19, 1:45 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 20, 1:26 PM EST | Wind Chill Advisory | IND | 45 hr |
| Dec 20, 10:03 PM EST | Winter Weather Advisory | IND | 4 hr |
| Dec 21, 4:05 AM EST | Wind Advisory | IND | 15 hr |
| Dec 22, 4:02 AM EST | Winter Storm Watch | IND | 24 hr |
| Dec 23, 3:45 AM EST | Winter Weather Advisory | IND | 24 hr |
| Dec 23, 1:08 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 26, 12:29 PM EST | Dense Fog Advisory | IND | 10 hr |
| Dec 27, 3:37 AM EST | Wind Advisory | IND | 27 hr |
| Dec 30, 3:05 PM EST | Wind Advisory | IND | 16 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 archive20072009
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.