Alert archive / Pennsylvania / Berks County
Weather alerts in Berks County, Pennsylvania, 2013
185 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Berks County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 185
- Warnings
- 27
- Watches
- 24
- Advisories
- 57
- Busiest month
- July39 alerts
- Busiest day
- July 7, 20138 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Berks County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 13 | 11 | 15% | 16 | 94% | 18 min |
| Flash flood warnings | 6 | 2 | 67% | 3 | 100% | 28 min |
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 27, 3:40 PM EST | Winter Weather Advisory | PHI | 30 hr |
| Jan 28, 7:33 AM EST | Mesoscale Discussion | SPC | 5 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 30, 1:50 PM EST | Special Weather Statement | PHI | 115 min |
| Jan 30, 3:33 PM EST | Special Weather Statement | PHI | 117 min |
| Jan 30, 8:22 PM EST | Special Weather Statement | PHI | 68 min |
| 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, 4:00 AM EST | Areal Flood Warning | PHI | 10 hr |
| Jan 31, 6:01 AM EST | Wind Advisory | PHI | 12 hr |
| Feb 5, 11:46 PM EST | Freezing Rain Advisory | PHI | 3 hr |
| Feb 7, 3:20 PM EST | Winter Storm Warning | PHI | 36 hr |
| Feb 7, 3:20 PM EST | Winter Weather Advisory | PHI | 36 hr |
| Feb 10, 3:14 PM EST | Freezing Rain Advisory | PHI | 18 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 |
| Mar 5, 3:27 PM EST | Winter Weather Advisory | PHI | 32 hr |
| Mar 12, 12:00 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Mar 17, 3:44 PM EDT | Winter Weather Advisory | PHI | 42 hr |
| Mar 24, 3:44 PM EDT | Winter Weather Advisory | PHI | 29 hr |
| Mar 25, 5:31 AM EDT | Mesoscale Discussion | SPC | 6 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, 5:59 PM EDT | Mesoscale Discussion | SPC | 61 min |
| Apr 10, 7:44 PM EDT | Severe Thunderstorm Warning | PHI | 46 min |
| Apr 10, 8:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 10, 9:36 PM EDT | Special Weather Statement | PHI | 84 min |
| Apr 12, 7:37 AM EDT | Special Weather Statement | PHI | 53 min |
| Apr 12, 8:33 AM EDT | Special Weather Statement | PHI | 57 min |
| Apr 17, 12:04 AM EDT | Special Weather Statement | PHI | 56 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 20, 6:09 PM EDT | Frost Advisory | PHI | 12 hr |
| Apr 21, 3:19 PM EDT | Frost Advisory | PHI | 17 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 |
| Apr 26, 3:40 PM EDT | Frost Advisory | PHI | 12 hr |
| May 8, 12:43 PM EDT | Special Weather Statement | PHI | 62 min |
| May 8, 6:04 PM EDT | Special Weather Statement | PHI | 56 min |
| May 8, 6:27 PM EDT | Special Weather Statement | PHI | 48 min |
| May 11, 2:03 PM EDT | Areal Flood Advisory | PHI | 117 min |
| May 12, 4:17 AM EDT | Frost Advisory | PHI | 28 hr |
| May 13, 3:08 PM EDT | Frost Advisory | PHI | 17 hr |
| May 20, 2:20 AM EDT | Dense Fog Advisory | PHI | 6 hr |
| May 22, 8:35 PM EDT | Special Weather Statement | PHI | 85 min |
| May 23, 1:38 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| May 23, 3:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 23, 9:08 PM EDT | Special Weather Statement | PHI | 37 min |
| May 29, 3:23 AM EDT | Dense Fog Advisory | PHI | 5 hr |
| Jun 2, 3:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 10, 3:30 AM EDT | Flood Watch | PHI | 24 hr |
| Jun 10, 5:14 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 10, 6:07 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 12, 3:58 AM EDT | Flood Watch | PHI | 36 hr |
| Jun 13, 2:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:27 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 5:30 AM EDT | Special Weather Statement | CTP | 45 min |
| Jun 13, 7:01 AM EDT | Special Weather Statement | PHI | 119 min |
| Jun 13, 7:29 AM EDT | Special Weather Statement | PHI | 61 min |
| Jun 13, 7:30 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 13, 8:10 AM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 18, 12:14 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jun 18, 5:18 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jun 24, 1:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| 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, 2:38 PM EDT | Special Weather Statement | PHI | 67 min |
| Jun 25, 8:22 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jun 25, 8:46 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 25, 9:14 PM EDT | Severe Thunderstorm Warning | PHI | 61 min |
| Jun 25, 10:07 PM EDT | Severe Thunderstorm Warning | PHI | 53 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, 4:32 PM EDT | Special Weather Statement | PHI | 118 min |
| Jun 27, 6:27 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jun 28, 1:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 28, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 3:30 PM EDT | Mesoscale Discussion | SPC | 2 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, 12:15 PM EDT | Areal Flood Advisory | PHI | 60 min |
| Jun 30, 12:49 PM EDT | Flash Flood Warning | PHI | 116 min |
| Jun 30, 2:04 PM EDT | Flash Flood Warning | PHI | 6 hr |
| Jun 30, 2:33 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 1, 2:26 AM EDT | Areal Flood Advisory | PHI | 3 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, 1:37 AM EDT | Areal Flood Advisory | PHI | 113 min |
| Jul 5, 3:04 PM EDT | Heat Advisory | PHI | 53 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, 4:41 PM EDT | Special Weather Statement | PHI | 2 hr |
| Jul 7, 4:45 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jul 7, 5:11 PM EDT | Special Weather Statement | PHI | 64 min |
| Jul 7, 5:31 PM EDT | Special Weather Statement | PHI | 59 min |
| Jul 7, 6:09 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Jul 7, 6:20 PM EDT | Special Weather Statement | PHI | 40 min |
| Jul 12, 4:47 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Jul 12, 8:31 PM EDT | Special Weather Statement | PHI | 59 min |
| Jul 14, 4:16 AM EDT | Excessive Heat Warning | PHI | 7 days |
| Jul 14, 3:38 PM EDT | Heat Advisory | PHI | 28 hr |
| Jul 15, 6:03 PM EDT | Special Weather Statement | PHI | 27 min |
| Jul 15, 6:12 PM EDT | Special Weather Statement | PHI | 33 min |
| Jul 17, 3:27 PM EDT | Heat Advisory | PHI | 3 days |
| Jul 18, 6:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 3:52 PM EDT | Special Weather Statement | PHI | 23 min |
| Jul 19, 4:45 PM EDT | Special Weather Statement | PHI | 30 min |
| Jul 19, 6:01 PM EDT | Special Weather Statement | PHI | 44 min |
| Jul 19, 6:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 8:24 PM EDT | Special Weather Statement | PHI | 36 min |
| Jul 19, 8:33 PM EDT | Severe Thunderstorm Warning | PHI | 42 min |
| Jul 19, 9:07 PM EDT | Severe Thunderstorm Warning | PHI | 38 min |
| Jul 20, 1:36 PM EDT | Mesoscale Discussion | SPC | 54 min |
| Jul 22, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 22, 2:48 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 22, 6:41 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 22, 9:53 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 22, 11:09 PM EDT | Areal Flood Advisory | PHI | 3 hr |
| Jul 22, 11:39 PM EDT | Flash Flood Warning | PHI | 4 hr |
| Jul 23, 3:49 AM EDT | Flash Flood Watch | PHI | 11 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 29, 12:45 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 1, 3:42 AM EDT | Flash Flood Watch | PHI | 14 hr |
| Aug 7, 11:37 PM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 13, 2:45 AM EDT | Flash Flood Watch | PHI | 9 hr |
| Aug 13, 5:15 AM EDT | Areal Flood Advisory | PHI | 4 hr |
| Aug 13, 7:14 AM EDT | Flash Flood Warning | PHI | 4 hr |
| Aug 29, 10:23 PM EDT | Special Weather Statement | PHI | 67 min |
| Aug 29, 10:37 PM EDT | Areal Flood Advisory | PHI | 113 min |
| Sep 12, 2:50 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Sep 12, 3:43 PM EDT | Special Weather Statement | PHI | 62 min |
| Sep 12, 4:21 PM EDT | Special Weather Statement | PHI | 84 min |
| Sep 12, 4:24 PM EDT | Mesoscale Discussion | SPC | 66 min |
| Sep 12, 4:40 PM EDT | Severe Thunderstorm Warning | PHI | 95 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, 11:31 AM EDT | Special Weather Statement | PHI | 59 min |
| Oct 7, 11:50 AM EDT | Severe Thunderstorm Warning | PHI | 40 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, 12:49 PM EDT | Severe Thunderstorm Warning | PHI | 41 min |
| Oct 11, 5:08 AM EDT | Special Weather Statement | PHI | 3 hr |
| Oct 17, 6:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 22, 3:30 PM EDT | Freeze Watch | PHI | 24 hr |
| Oct 23, 4:07 AM EDT | Frost Advisory | PHI | 29 hr |
| Oct 23, 3:36 PM EDT | Freeze Watch | PHI | 23 hr |
| Oct 24, 2:55 PM EDT | Freeze Warning | PHI | 18 hr |
| Oct 25, 3:47 AM EDT | Freeze Watch | PHI | 10 hr |
| Oct 25, 1:32 PM EDT | Freeze Warning | PHI | 19 hr |
| Oct 31, 1:34 AM EDT | Dense Fog Advisory | PHI | 7 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, 2:28 AM EST | Severe Thunderstorm Warning | PHI | 62 min |
| Nov 18, 2:31 AM EST | Mesoscale Discussion | SPC | 89 min |
| Nov 23, 3:43 PM EST | Red Flag Warning | PHI | 26 hr |
| Nov 23, 7:47 PM EST | Special Weather Statement | PHI | 43 min |
| 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, 8:37 PM EST | Dense Fog Advisory | PHI | 7 hr |
| Dec 7, 4:03 PM EST | Winter Weather Advisory | PHI | 45 hr |
| Dec 8, 2:30 PM EST | Mesoscale Discussion | SPC | 2 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 | 13 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 3 |
| Mesoscale Discussion | 39 |
| Special Weather Statement | 38 |
| Flooding | |
| Areal Flood Warning | 1 |
| Flash Flood Warning | 6 |
| Flash Flood Watch | 5 |
| Flood Watch | 2 |
| Areal Flood Advisory | 23 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 1 |
| Freezing Rain Advisory | 3 |
| Winter Weather Advisory | 11 |
| Heat | |
| Excessive Heat Warning | 1 |
| Heat Advisory | 3 |
| Cold | |
| Freeze Warning | 2 |
| Freeze Watch | 3 |
| Frost Advisory | 6 |
| Wind and dust | |
| Wind Advisory | 3 |
| Fire | |
| Red Flag Warning | 2 |
| 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.