Alert archive / New Jersey / Somerset County
Weather alerts in Somerset County, New Jersey, 2011
293 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Somerset County and its neighbors
Each county as a circle sized by its count in 2011. Tap one for its archive.
- Alerts
- 293
- Warnings
- 103
- Watches
- 42
- Advisories
- 44
- Busiest month
- August60 alerts
- Busiest day
- August 27, 201111 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Somerset County, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 20 | 13 | 35% | 5 | 80% | 27 min |
| Flash flood warnings | 7 | 2 | 71% | 0 |
Each office's whole area, 2011
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 29 | 2 | 93% | 7 | 29% | 17 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 307 | 164 | 47% | 361 | 86% | 25 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 68 | 12 | 82% | 21 | 67% | 70 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 6, 1:31 PM EST | Winter Weather Advisory | PHI | 25 hr |
| Jan 7, 3:34 PM EST | Winter Weather Advisory | PHI | 27 hr |
| Jan 10, 4:01 AM EST | Winter Storm Watch | PHI | 24 hr |
| Jan 10, 3:42 PM EST | Winter Storm Warning | PHI | 37 hr |
| Jan 11, 4:24 AM EST | Winter Weather Advisory | PHI | 26 hr |
| Jan 11, 8:00 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 17, 4:11 AM EST | Winter Weather Advisory | PHI | 32 hr |
| Jan 17, 2:37 PM EST | Winter Storm Warning | PHI | 25 hr |
| Jan 18, 12:29 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 18, 8:01 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 20, 3:35 AM EST | Winter Weather Advisory | PHI | 29 hr |
| Jan 21, 12:30 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 21, 1:28 PM EST | Special Weather Statement | PHI | 62 min |
| Jan 21, 2:55 PM EST | Special Weather Statement | PHI | 110 min |
| Jan 25, 4:06 AM EST | Winter Storm Watch | PHI | 24 hr |
| Jan 26, 4:07 AM EST | Winter Storm Warning | PHI | 24 hr |
| Jan 26, 11:12 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 26, 2:19 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 26, 7:18 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 30, 8:35 PM EST | Winter Storm Watch | PHI | 42 hr |
| Jan 31, 3:18 PM EST | Winter Storm Warning | PHI | 24 hr |
| Feb 1, 2:42 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Feb 1, 2:49 PM EST | Ice Storm Warning | PHI | 21 hr |
| Feb 1, 8:39 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 1, 11:21 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Feb 4, 4:24 AM EST | Winter Weather Advisory | PHI | 41 hr |
| Feb 5, 7:10 PM EST | Dense Fog Advisory | PHI | 65 min |
| Feb 8, 3:57 AM EST | Wind Advisory | PHI | 16 hr |
| Feb 14, 3:11 AM EST | Wind Advisory | PHI | 23 hr |
| Feb 18, 3:03 PM EST | High Wind Watch | PHI | 6 hr |
| Feb 18, 9:06 PM EST | High Wind Warning | PHI | 22 hr |
| Feb 19, 7:26 PM EST | Wind Advisory | PHI | 5 hr |
| Feb 20, 3:32 AM EST | Winter Weather Advisory | PHI | 31 hr |
| Feb 24, 4:16 AM EST | High Wind Watch | PHI | 11 hr |
| Feb 24, 3:02 PM EST | Flood Watch | PHI | 25 hr |
| Feb 24, 3:07 PM EST | High Wind Warning | PHI | 29 hr |
| Feb 25, 12:44 PM EST | Special Weather Statement | PHI | 61 min |
| Feb 25, 7:55 PM EST | Wind Advisory | PHI | 3 hr |
| Feb 27, 4:44 AM EST | Flood Watch | PHI | 34 hr |
| Feb 28, 9:23 AM EST | Special Weather Statement | PHI | 112 min |
| Mar 5, 3:25 AM EST | Flood Watch | PHI | 48 hr |
| Mar 6, 5:01 PM EST | Areal Flood Advisory | PHI | 12 hr |
| Mar 6, 7:08 PM EST | Special Weather Statement | PHI | 67 min |
| Mar 6, 10:21 PM EST | Areal Flood Warning | PHI | 24 hr |
| Mar 7, 4:03 AM EST | River Flood Warning | PHI | 6 hr |
| Mar 7, 4:03 AM EST | River Flood Warning | PHI | 17 hr |
| Mar 7, 4:03 AM EST | River Flood Warning | PHI | 17 hr |
| Mar 7, 9:28 AM EST | River Flood Warning | PHI | 19 hr |
| Mar 8, 4:18 AM EST | Flood Watch | PHI | 3 days |
| Mar 10, 7:28 AM EST | Areal Flood Advisory | PHI | 6 hr |
| Mar 10, 1:17 PM EST | Areal Flood Advisory | PHI | 5 hr |
| Mar 10, 7:00 PM EST | Areal Flood Advisory | PHI | 6 hr |
| Mar 10, 10:26 PM EST | River Flood Warning | PHI | 29 hr |
| Mar 10, 10:32 PM EST | River Flood Warning | PHI | 20 hr |
| Mar 10, 10:32 PM EST | River Flood Warning | PHI | 12 hr |
| Mar 10, 10:32 PM EST | River Flood Warning | PHI | 23 hr |
| Mar 10, 10:32 PM EST | River Flood Warning | PHI | 23 hr |
| Mar 10, 10:35 PM EST | River Flood Warning | PHI | 22 hr |
| Mar 10, 10:35 PM EST | River Flood Warning | PHI | 66 hr |
| Mar 10, 11:47 PM EST | Areal Flood Warning | PHI | 12 hr |
| Mar 11, 1:08 AM EST | Areal Flood Warning | PHI | 16 hr |
| Mar 22, 3:35 PM EDT | Winter Weather Advisory | PHI | 19 hr |
| Mar 23, 3:32 AM EDT | Mesoscale Discussion | SPC | 4 hr |
| Mar 23, 6:53 PM EDT | Special Weather Statement | PHI | 112 min |
| Mar 23, 8:30 PM EDT | Special Weather Statement | PHI | 2 hr |
| Mar 23, 9:30 PM EDT | Winter Weather Advisory | PHI | 9 hr |
| Mar 28, 4:35 AM EDT | Red Flag Warning | PHI | 13 hr |
| Mar 28, 6:02 PM EDT | Fire Weather Watch | PHI | 10 hr |
| Mar 29, 4:05 AM EDT | Red Flag Warning | PHI | 14 hr |
| Apr 5, 5:03 AM EDT | Mesoscale Discussion | SPC | 27 min |
| Apr 5, 5:07 AM EDT | Severe Thunderstorm Watch | SPC | 2 hr |
| Apr 5, 5:58 AM EDT | Special Weather Statement | PHI | 62 min |
| Apr 5, 6:25 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 5, 6:30 AM EDT | Special Weather Statement | PHI | 60 min |
| Apr 5, 9:37 AM EDT | Special Weather Statement | PHI | 53 min |
| Apr 5, 10:30 AM EDT | Special Weather Statement | PHI | 60 min |
| Apr 12, 6:47 PM EDT | Special Weather Statement | PHI | 58 min |
| Apr 13, 12:12 AM EDT | Special Weather Statement | PHI | 63 min |
| Apr 15, 3:10 PM EDT | Wind Advisory | PHI | 32 hr |
| Apr 16, 4:07 AM EDT | Flood Watch | PHI | 24 hr |
| Apr 16, 7:47 PM EDT | Areal Flood Warning | PHI | 12 hr |
| Apr 16, 11:21 PM EDT | River Flood Warning | PHI | 42 hr |
| Apr 17, 12:50 AM EDT | River Flood Warning | PHI | 6 hr |
| Apr 17, 12:50 AM EDT | River Flood Warning | PHI | 11 hr |
| Apr 17, 12:50 AM EDT | River Flood Warning | PHI | 23 hr |
| Apr 17, 12:50 AM EDT | River Flood Warning | PHI | 23 hr |
| Apr 17, 5:39 AM EDT | River Flood Warning | PHI | 38 hr |
| Apr 23, 7:43 AM EDT | Special Weather Statement | PHI | 2 hr |
| Apr 24, 7:57 PM EDT | Special Weather Statement | PHI | 63 min |
| Apr 27, 12:43 AM EDT | Special Weather Statement | PHI | 62 min |
| Apr 27, 1:19 AM EDT | Special Weather Statement | PHI | 56 min |
| Apr 27, 3:30 AM EDT | Flood Watch | PHI | 12 hr |
| Apr 27, 3:26 PM EDT | Flash Flood Watch | PHI | 24 hr |
| Apr 27, 3:29 PM EDT | Special Weather Statement | PHI | 61 min |
| Apr 27, 3:39 PM EDT | Severe Thunderstorm Warning | PHI | 66 min |
| Apr 27, 3:55 PM EDT | Mesoscale Discussion | SPC | 65 min |
| Apr 27, 8:15 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Apr 28, 6:21 AM EDT | Mesoscale Discussion | SPC | 54 min |
| Apr 28, 7:35 AM EDT | Special Weather Statement | PHI | 55 min |
| Apr 28, 9:45 AM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 28, 10:57 AM EDT | Severe Thunderstorm Warning | PHI | 63 min |
| Apr 28, 11:11 AM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| Apr 28, 11:15 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Apr 28, 11:49 AM EDT | Mesoscale Discussion | SPC | 56 min |
| Apr 28, 12:38 PM EDT | Special Weather Statement | PHI | 52 min |
| May 7, 5:20 PM EDT | Special Weather Statement | PHI | 85 min |
| May 15, 12:52 AM EDT | Special Weather Statement | PHI | 83 min |
| May 15, 3:37 PM EDT | Severe Thunderstorm Warning | PHI | 53 min |
| May 15, 4:39 PM EDT | Special Weather Statement | PHI | 66 min |
| May 15, 6:49 PM EDT | Special Weather Statement | PHI | 56 min |
| May 15, 11:18 PM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| May 15, 11:58 PM EDT | Special Weather Statement | PHI | 62 min |
| May 16, 12:07 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 16, 3:50 PM EDT | Flood Watch | PHI | 60 hr |
| May 17, 5:10 AM EDT | Special Weather Statement | PHI | 2 hr |
| May 18, 2:14 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| May 18, 2:34 PM EDT | Mesoscale Discussion | SPC | 56 min |
| May 18, 3:08 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 19, 10:47 AM EDT | Mesoscale Discussion | SPC | 88 min |
| May 19, 12:20 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| May 19, 2:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 19, 5:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| May 19, 5:08 PM EDT | Severe Thunderstorm Warning | PHI | 50 min |
| May 20, 3:30 AM EDT | Flash Flood Watch | PHI | 15 hr |
| May 23, 8:31 PM EDT | Severe Thunderstorm Warning | PHI | 59 min |
| May 23, 9:25 PM EDT | Special Weather Statement | PHI | 65 min |
| May 24, 1:34 PM EDT | Mesoscale Discussion | SPC | 116 min |
| May 28, 5:51 PM EDT | Special Weather Statement | PHI | 39 min |
| May 30, 3:46 AM EDT | Mesoscale Discussion | SPC | 119 min |
| May 30, 5:11 AM EDT | Severe Thunderstorm Warning | PHI | 64 min |
| May 30, 6:04 AM EDT | Special Weather Statement | PHI | 56 min |
| Jun 1, 12:26 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 1, 12:58 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 1, 4:15 PM EDT | Severe Thunderstorm Warning | PHI | 45 min |
| Jun 1, 7:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 7, 3:15 PM EDT | Heat Advisory | PHI | 53 hr |
| Jun 9, 1:45 PM EDT | Mesoscale Discussion | SPC | 90 min |
| Jun 9, 2:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 9, 4:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 9, 6:44 PM EDT | Severe Thunderstorm Warning | PHI | 61 min |
| Jun 9, 7:17 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 9, 7:42 PM EDT | Severe Thunderstorm Warning | PHI | 33 min |
| Jun 10, 5:28 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 12, 10:52 PM EDT | Special Weather Statement | PHI | 53 min |
| Jun 14, 3:51 PM EDT | Special Weather Statement | PHI | 84 min |
| Jun 17, 4:39 AM EDT | Special Weather Statement | PHI | 51 min |
| Jun 22, 4:39 PM EDT | Severe Thunderstorm Warning | PHI | 66 min |
| Jun 22, 5:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 22, 5:43 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Jun 23, 10:04 AM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 24, 1:22 AM EDT | Special Weather Statement | PHI | 53 min |
| Jun 24, 3:41 AM EDT | Flash Flood Watch | PHI | 16 hr |
| Jun 24, 11:42 AM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jun 24, 12:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 24, 3:00 PM EDT | Special Weather Statement | PHI | 60 min |
| Jun 24, 4:13 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Jun 24, 4:20 PM EDT | Severe Thunderstorm Warning | PHI | 55 min |
| Jun 24, 4:54 PM EDT | Areal Flood Advisory | PHI | 2 hr |
| Jun 24, 5:03 PM EDT | Severe Thunderstorm Warning | PHI | 72 min |
| Jun 25, 3:01 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| Jul 3, 11:08 AM EDT | Special Weather Statement | PHI | 52 min |
| Jul 7, 6:46 PM EDT | Severe Thunderstorm Warning | PHI | 74 min |
| Jul 8, 3:58 AM EDT | Flash Flood Watch | PHI | 19 hr |
| Jul 8, 11:44 AM EDT | Mesoscale Discussion | SPC | 61 min |
| Jul 8, 1:51 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 8, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | 66 min |
| Jul 8, 3:33 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 8, 3:51 PM EDT | Severe Thunderstorm Warning | PHI | 69 min |
| Jul 8, 4:10 PM EDT | Flash Flood Warning | PHI | 3 hr |
| Jul 8, 5:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 11, 3:13 PM EDT | Heat Advisory | PHI | 29 hr |
| Jul 19, 2:29 PM EDT | Excessive Heat Warning | PHI | 5 days |
| Jul 20, 4:04 AM EDT | Excessive Heat Watch | PHI | 11 hr |
| Jul 26, 5:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 29, 12:57 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 29, 2:40 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jul 29, 4:40 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 29, 5:12 PM EDT | Special Weather Statement | PHI | 108 min |
| Jul 31, 10:13 PM EDT | Special Weather Statement | PHI | 62 min |
| Aug 1, 3:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 1, 6:18 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 7, 4:45 AM EDT | Special Weather Statement | PHI | 60 min |
| Aug 7, 5:10 AM EDT | Areal Flood Advisory | PHI | 81 min |
| Aug 9, 12:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Aug 9, 2:53 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 9, 3:05 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Aug 9, 4:16 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 9, 7:07 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 13, 3:10 PM EDT | Flood Watch | PHI | 13 hr |
| Aug 14, 12:03 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 14, 12:53 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 14, 3:42 AM EDT | Flash Flood Watch | PHI | 25 hr |
| Aug 14, 3:55 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 14, 7:43 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 14, 1:36 PM EDT | Areal Flood Warning | PHI | 16 hr |
| Aug 15, 12:03 AM EDT | River Flood Warning | PHI | 33 hr |
| Aug 15, 5:34 AM EDT | Areal Flood Warning | PHI | 3 hr |
| Aug 15, 2:56 PM EDT | Special Weather Statement | PHI | 109 min |
| Aug 18, 4:53 AM EDT | Special Weather Statement | PHI | 52 min |
| Aug 18, 6:35 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 18, 3:12 PM EDT | Flash Flood Watch | PHI | 29 hr |
| Aug 18, 6:39 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Aug 18, 9:48 PM EDT | Severe Thunderstorm Warning | PHI | 57 min |
| Aug 19, 12:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Aug 19, 1:04 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 19, 5:49 PM EDT | Areal Flood Advisory | PHI | 104 min |
| Aug 19, 5:59 PM EDT | Severe Thunderstorm Warning | PHI | 80 min |
| Aug 19, 6:42 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Aug 19, 7:44 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Aug 21, 3:28 AM EDT | Flash Flood Watch | PHI | 17 hr |
| Aug 21, 11:54 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 21, 12:52 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Aug 21, 6:54 PM EDT | Areal Flood Advisory | PHI | 111 min |
| Aug 21, 7:08 PM EDT | Special Weather Statement | PHI | 52 min |
| Aug 21, 7:12 PM EDT | Mesoscale Discussion | SPC | 63 min |
| Aug 25, 10:00 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Aug 25, 4:36 PM EDT | Flood Watch | PHI | 68 hr |
| Aug 25, 5:26 PM EDT | Tropical Storm Watch | PHI | 25 hr |
| Aug 26, 5:16 AM EDT | Tropical Storm Warning | PHI | 66 hr |
| Aug 27, 3:47 PM EDT | Areal Flood Advisory | PHI | 118 min |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | 5 days |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | 7 days |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | 37 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | 35 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | 60 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | 66 hr |
| Aug 27, 4:06 PM EDT | River Flood Warning | PHI | 3 days |
| Aug 27, 5:42 PM EDT | Areal Flood Warning | PHI | 6 hr |
| Aug 27, 7:31 PM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 27, 7:56 PM EDT | Tornado Watch | SPC | 9 hr |
| Aug 27, 9:43 PM EDT | Areal Flood Warning | PHI | 6 hr |
| Aug 27, 11:37 PM EDT | Flash Flood Warning | PHI | 12 hr |
| Aug 28, 12:30 AM EDT | Mesoscale Discussion | SPC | 90 min |
| Aug 28, 3:50 AM EDT | Flash Flood Warning | PHI | 10 hr |
| Aug 28, 4:01 AM EDT | Mesoscale Discussion | SPC | 89 min |
| Aug 28, 11:07 AM EDT | Areal Flood Warning | PHI | 18 hr |
| Aug 28, 1:27 PM EDT | Areal Flood Warning | PHI | 8 hr |
| Aug 28, 9:52 PM EDT | Areal Flood Warning | PHI | 31 hr |
| Sep 4, 3:05 PM EDT | Flood Watch | PHI | 4 days |
| Sep 5, 6:03 PM EDT | Special Weather Statement | PHI | 117 min |
| Sep 5, 7:06 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Sep 6, 5:45 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Sep 6, 6:48 PM EDT | Areal Flood Warning | PHI | 31 hr |
| Sep 6, 8:28 PM EDT | River Flood Warning | PHI | 14 hr |
| Sep 6, 8:28 PM EDT | River Flood Warning | PHI | 4 days |
| Sep 6, 8:28 PM EDT | River Flood Warning | PHI | 3 days |
| Sep 6, 8:28 PM EDT | River Flood Warning | PHI | 56 hr |
| Sep 6, 8:28 PM EDT | River Flood Warning | PHI | 14 hr |
| Sep 6, 8:28 PM EDT | River Flood Warning | PHI | 25 hr |
| Sep 6, 8:28 PM EDT | River Flood Warning | PHI | 3 days |
| Sep 7, 11:32 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Sep 8, 3:15 AM EDT | Flash Flood Warning | PHI | 6 hr |
| Sep 8, 4:01 AM EDT | River Flood Warning | PHI | 7 hr |
| Sep 8, 4:01 AM EDT | River Flood Warning | PHI | 18 hr |
| Sep 8, 4:01 AM EDT | River Flood Warning | PHI | 36 hr |
| Sep 8, 9:53 AM EDT | Areal Flood Warning | PHI | 24 hr |
| Sep 8, 5:08 PM EDT | River Flood Warning | PHI | 16 hr |
| Sep 22, 3:43 AM EDT | Flood Watch | PHI | 45 hr |
| Sep 23, 10:52 AM EDT | Areal Flood Advisory | PHI | 5 hr |
| Sep 23, 7:48 PM EDT | Areal Flood Warning | PHI | 5 hr |
| Sep 28, 1:54 AM EDT | Special Weather Statement | PHI | 51 min |
| Sep 28, 3:56 AM EDT | Flash Flood Watch | PHI | 39 hr |
| Sep 28, 4:09 AM EDT | Special Weather Statement | PHI | 51 min |
| Sep 28, 5:45 AM EDT | River Flood Warning | PHI | 22 hr |
| Sep 28, 12:00 PM EDT | Areal Flood Warning | PHI | 6 hr |
| Sep 28, 5:58 PM EDT | Areal Flood Warning | PHI | 26 hr |
| Sep 29, 11:22 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Sep 29, 2:39 PM EDT | Special Weather Statement | PHI | 66 min |
| Oct 1, 9:53 PM EDT | Special Weather Statement | PHI | 112 min |
| Oct 2, 2:44 AM EDT | Special Weather Statement | PHI | 2 hr |
| Oct 14, 2:53 PM EDT | Special Weather Statement | PHI | 67 min |
| Oct 19, 10:26 PM EDT | Special Weather Statement | PHI | 64 min |
| Oct 27, 2:30 PM EDT | Freeze Warning | PHI | 18 hr |
| Oct 28, 3:52 PM EDT | Winter Storm Warning | PHI | 31 hr |
| Nov 22, 2:48 PM EST | Flash Flood Watch | PHI | 16 hr |
| Nov 22, 7:42 PM EST | Areal Flood Advisory | PHI | 4 hr |
| Nov 23, 1:17 AM EST | Areal Flood Advisory | PHI | 6 hr |
| Nov 23, 1:30 AM EST | Areal Flood Warning | PHI | 6 hr |
| Nov 23, 3:08 AM EST | Special Weather Statement | PHI | 3 hr |
| Nov 23, 3:44 AM EST | Areal Flood Warning | PHI | 8 hr |
| Nov 23, 6:12 AM EST | River Flood Warning | PHI | 5 hr |
| Nov 23, 11:55 AM EST | Areal Flood Warning | PHI | 13 hr |
| Nov 23, 12:12 PM EST | River Flood Warning | PHI | 20 hr |
| Nov 23, 1:15 PM EST | River Flood Warning | PHI | 7 hr |
| Dec 4, 10:44 PM EST | Dense Fog Advisory | PHI | 11 hr |
| Dec 6, 3:10 PM EST | Flood Watch | PHI | 36 hr |
| Dec 7, 6:51 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Dec 7, 7:10 PM EST | Areal Flood Advisory | PHI | 6 hr |
| Dec 7, 8:04 PM EST | Areal Flood Warning | PHI | 18 hr |
| Dec 8, 4:50 AM EST | River Flood Warning | PHI | 31 hr |
| Dec 8, 8:05 AM EST | River Flood Warning | PHI | 8 hr |
| Dec 8, 9:47 AM EST | River Flood Warning | PHI | 9 hr |
| Dec 21, 9:54 PM EST | Special Weather Statement | PHI | 51 min |
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 archive20102012
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.