Alert archive / Pennsylvania / Monroe County
Weather alerts in Monroe County, Pennsylvania, 2013
160 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Monroe County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 160
- Warnings
- 23
- Watches
- 22
- Advisories
- 57
- Busiest month
- July25 alerts
- Busiest day
- September 12, 20137 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Monroe County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 12 | 5 | 58% | 3 | 100% | 19 min |
| Flash flood warnings | 3 | 1 | 67% | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Philadelphia/Mount Holly: tornado warnings | 5 | 1 | 80% | 2 | 50% | 1 min |
| NWS Philadelphia/Mount Holly: severe thunderstorm warnings | 127 | 69 | 46% | 212 | 73% | 24 min |
| NWS Philadelphia/Mount Holly: flash flood warnings | 70 | 38 | 46% | 112 | 76% | 71 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 12, 12:26 AM EST | Dense Fog Advisory | PHI | 9 hr |
| Jan 12, 2:54 PM EST | Dense Fog Advisory | PHI | 22 hr |
| Jan 13, 3:30 PM EST | Dense Fog Advisory | PHI | 19 hr |
| Jan 15, 3:38 AM EST | Winter Weather Advisory | PHI | 35 hr |
| Jan 15, 8:36 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 16, 3:42 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 22, 12:37 PM EST | Wind Chill Advisory | PHI | 19 hr |
| Jan 27, 3:40 PM EST | Winter Weather Advisory | PHI | 30 hr |
| Jan 28, 7:33 AM EST | Mesoscale Discussion | SPC | 5 hr |
| Jan 28, 11:55 AM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 29, 2:51 PM EST | Flash Flood Watch | PHI | 39 hr |
| Jan 30, 4:02 AM EST | Dense Fog Advisory | PHI | 8 hr |
| Jan 30, 4:02 AM EST | Wind Advisory | PHI | 24 hr |
| Jan 31, 12:10 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Jan 31, 12:34 AM EST | Special Weather Statement | PHI | 116 min |
| Jan 31, 2:06 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Jan 31, 2:20 AM EST | Special Weather Statement | PHI | 55 min |
| Jan 31, 6:01 AM EST | Wind Advisory | PHI | 12 hr |
| Feb 5, 11:46 PM EST | Freezing Rain Advisory | PHI | 3 hr |
| Feb 6, 3:50 PM EST | Winter Storm Watch | PHI | 24 hr |
| Feb 7, 3:20 PM EST | Winter Storm Warning | PHI | 36 hr |
| Feb 10, 3:14 PM EST | Freezing Rain Advisory | PHI | 18 hr |
| Feb 15, 9:43 PM EST | Winter Weather Advisory | PHI | 6 hr |
| Feb 22, 3:42 AM EST | Winter Weather Advisory | PHI | 12 hr |
| Feb 22, 3:30 PM EST | Freezing Rain Advisory | PHI | 20 hr |
| Feb 23, 11:59 AM EST | Winter Weather Advisory | PHI | 16 hr |
| Feb 25, 3:10 PM EST | Winter Storm Watch | PHI | 12 hr |
| Feb 26, 3:37 AM EST | Winter Weather Advisory | PHI | 29 hr |
| Feb 26, 11:22 AM EST | Winter Storm Warning | PHI | 19 hr |
| Mar 7, 3:30 AM EST | Winter Weather Advisory | PHI | 35 hr |
| Mar 12, 12:00 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Mar 16, 1:52 PM EDT | Winter Weather Advisory | PHI | 4 hr |
| Mar 17, 3:44 PM EDT | Winter Weather Advisory | PHI | 42 hr |
| Mar 18, 3:19 PM EDT | Winter Storm Warning | PHI | 17 hr |
| Apr 2, 3:33 PM EDT | Fire Weather Watch | PHI | 12 hr |
| Apr 3, 3:44 AM EDT | Red Flag Warning | PHI | 18 hr |
| Apr 10, 4:53 PM EDT | Special Weather Statement | PHI | 112 min |
| Apr 10, 5:25 PM EDT | Severe Thunderstorm Warning | PHI | 65 min |
| Apr 10, 5:59 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Apr 12, 9:06 AM EDT | Special Weather Statement | PHI | 54 min |
| Apr 19, 3:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Apr 19, 3:55 PM EDT | Tornado Watch | SPC | 6 hr |
| Apr 19, 6:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Apr 19, 6:20 PM EDT | Special Weather Statement | PHI | 3 hr |
| Apr 24, 4:55 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 24, 5:57 PM EDT | Special Weather Statement | PHI | 2 hr |
| Apr 24, 6:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 12, 4:17 AM EDT | Frost Advisory | PHI | 28 hr |
| May 12, 3:26 PM EDT | Freeze Watch | PHI | 13 hr |
| May 13, 4:06 AM EDT | Freeze Warning | PHI | 28 hr |
| May 20, 2:20 AM EDT | Dense Fog Advisory | PHI | 6 hr |
| May 21, 2:38 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 22, 11:31 AM EDT | Mesoscale Discussion | SPC | 119 min |
| May 22, 11:39 AM EDT | Special Weather Statement | PHI | 51 min |
| May 22, 11:54 AM EDT | Areal Flood Advisory | PHI | 111 min |
| May 22, 9:55 PM EDT | Special Weather Statement | PHI | 65 min |
| May 22, 10:40 PM EDT | Severe Thunderstorm Warning | PHI | 50 min |
| May 23, 2:31 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 23, 10:12 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| May 26, 3:07 PM EDT | Frost Advisory | PHI | 16 hr |
| May 29, 3:23 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| May 29, 11:38 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 3:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 3:30 AM EDT | Flood Watch | PHI | 24 hr |
| Jun 12, 3:58 AM EDT | Flood Watch | PHI | 36 hr |
| Jun 13, 5:27 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 24, 2:44 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jun 24, 4:43 PM EDT | Mesoscale Discussion | SPC | 62 min |
| Jun 25, 12:22 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 25, 10:01 PM EDT | Special Weather Statement | PHI | 119 min |
| Jun 26, 4:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 27, 1:04 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jun 27, 1:58 PM EDT | Tornado Watch | SPC | 7 hr |
| Jun 27, 3:57 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 27, 7:07 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 27, 10:00 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 28, 6:43 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 29, 3:34 PM EDT | Flash Flood Watch | PHI | 3 days |
| Jun 30, 11:48 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 2:33 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 3:29 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 1, 3:50 AM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 1, 5:37 AM EDT | Flash Flood Warning | PHI | 6 hr |
| Jul 1, 6:49 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 1, 2:14 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 2, 2:46 AM EDT | Areal Flood Advisory | PHI | 119 min |
| Jul 2, 4:32 AM EDT | Areal Flood Warning | PHI | 4 hr |
| Jul 7, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 7, 3:57 PM EDT | Special Weather Statement | PHI | 3 hr |
| Jul 7, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 7, 5:56 PM EDT | Special Weather Statement | PHI | 49 min |
| Jul 7, 6:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 7, 6:12 PM EDT | Severe Thunderstorm Warning | PHI | 48 min |
| Jul 10, 9:02 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jul 18, 11:38 AM EDT | Heat Advisory | PHI | 32 hr |
| Jul 20, 1:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 20, 2:39 PM EDT | Special Weather Statement | PHI | 51 min |
| Jul 20, 3:31 PM EDT | Special Weather Statement | PHI | 59 min |
| Jul 22, 9:19 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 28, 11:31 AM EDT | Mesoscale Discussion | SPC | 59 min |
| Jul 28, 2:51 PM EDT | Areal Flood Advisory | PHI | 114 min |
| Jul 28, 3:14 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 28, 8:17 PM EDT | Areal Flood Advisory | PHI | 118 min |
| Jul 28, 9:45 PM EDT | Areal Flood Advisory | PHI | 6 hr |
| Jul 29, 1:05 AM EDT | Special Weather Statement | PHI | 55 min |
| Jul 29, 1:45 AM EDT | Special Weather Statement | PHI | 60 min |
| Aug 1, 3:42 AM EDT | Flash Flood Watch | PHI | 14 hr |
| Aug 9, 6:30 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 9, 8:03 AM EDT | Flash Flood Watch | PHI | 11 hr |
| Aug 9, 8:39 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 13, 2:45 AM EDT | Flash Flood Watch | PHI | 9 hr |
| Aug 22, 5:47 AM EDT | Special Weather Statement | PHI | 88 min |
| Aug 22, 2:03 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 1, 7:24 AM EDT | Special Weather Statement | PHI | 96 min |
| Sep 2, 5:34 AM EDT | Severe Thunderstorm Warning | PHI | 56 min |
| Sep 2, 3:06 PM EDT | Areal Flood Advisory | PHI | 114 min |
| Sep 2, 10:51 PM EDT | Special Weather Statement | PHI | 39 min |
| Sep 2, 11:31 PM EDT | Severe Thunderstorm Warning | PHI | 59 min |
| Sep 11, 7:35 PM EDT | Special Weather Statement | PHI | 55 min |
| Sep 12, 12:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Sep 12, 2:26 PM EDT | Special Weather Statement | PHI | 64 min |
| Sep 12, 2:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Sep 12, 2:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 12, 4:21 PM EDT | Special Weather Statement | PHI | 84 min |
| Sep 12, 4:40 PM EDT | Severe Thunderstorm Warning | PHI | 95 min |
| Sep 12, 6:07 PM EDT | Severe Thunderstorm Warning | PHI | 68 min |
| Sep 17, 3:16 AM EDT | Frost Advisory | PHI | 29 hr |
| Sep 23, 2:55 PM EDT | Frost Advisory | PHI | 17 hr |
| Oct 4, 7:51 PM EDT | Special Weather Statement | PHI | 54 min |
| Oct 7, 8:10 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 7, 8:56 AM EDT | Tornado Watch | SPC | 8 hr |
| Oct 7, 10:36 AM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 7, 12:12 PM EDT | Severe Thunderstorm Warning | PHI | 63 min |
| Oct 7, 12:20 PM EDT | Mesoscale Discussion | SPC | 115 min |
| Oct 7, 1:30 PM EDT | Special Weather Statement | PHI | 60 min |
| Oct 22, 3:30 PM EDT | Freeze Watch | PHI | 24 hr |
| Oct 23, 4:07 AM EDT | Freeze Warning | PHI | 29 hr |
| Nov 1, 3:14 AM EDT | Wind Advisory | PHI | 9 hr |
| Nov 1, 5:41 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Nov 1, 6:25 AM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 1, 6:45 AM EDT | Severe Thunderstorm Warning | PHI | 75 min |
| Nov 1, 7:53 AM EDT | Severe Thunderstorm Warning | PHI | 67 min |
| Nov 18, 1:07 AM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Nov 18, 1:58 AM EST | Severe Thunderstorm Warning | PHI | 62 min |
| Nov 18, 2:31 AM EST | Mesoscale Discussion | SPC | 89 min |
| Nov 18, 2:54 AM EST | Severe Thunderstorm Warning | PHI | 66 min |
| Nov 23, 5:23 PM EST | Special Weather Statement | PHI | 52 min |
| Nov 23, 6:21 PM EST | Wind Advisory | PHI | 19 hr |
| Nov 25, 3:28 PM EST | Winter Weather Advisory | PHI | 33 hr |
| Nov 27, 5:57 AM EST | Areal Flood Advisory | PHI | 4 hr |
| Dec 5, 6:36 AM EST | Dense Fog Advisory | PHI | 3 hr |
| Dec 5, 8:37 PM EST | Dense Fog Advisory | PHI | 7 hr |
| Dec 6, 9:17 AM EST | Winter Weather Advisory | PHI | 18 hr |
| Dec 6, 7:41 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 7, 4:03 PM EST | Winter Weather Advisory | PHI | 45 hr |
| Dec 9, 3:48 PM EST | Winter Weather Advisory | PHI | 22 hr |
| Dec 13, 3:33 AM EST | Winter Storm Watch | PHI | 12 hr |
| Dec 13, 3:24 PM EST | Winter Storm Warning | PHI | 38 hr |
| Dec 14, 3:02 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Dec 16, 2:56 PM EST | Winter Weather Advisory | PHI | 27 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 | 12 |
| Severe Thunderstorm Watch | 6 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 34 |
| Special Weather Statement | 24 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 3 |
| Flash Flood Watch | 5 |
| Flood Watch | 2 |
| Areal Flood Advisory | 22 |
| Winter | |
| Winter Storm Warning | 4 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 3 |
| Winter Weather Advisory | 14 |
| Heat | |
| Heat Advisory | 1 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 2 |
| Frost Advisory | 4 |
| Wind Chill Advisory | 1 |
| Wind and dust | |
| Wind Advisory | 4 |
| Fire | |
| Red Flag Warning | 1 |
| Fire Weather Watch | 1 |
| 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 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.