Alert archive / Pennsylvania / Adams County
Weather alerts in Adams County, Pennsylvania, 2013
149 weather alerts in 2013, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Adams County and its neighbors
Each county as a circle sized by its count in 2013. Tap one for its archive.
- Alerts
- 149
- Warnings
- 30
- Watches
- 28
- Advisories
- 32
- Busiest month
- June35 alerts
- Busiest day
- April 19, 20136 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
Adams County, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 0 | 0 | ||||
| Severe thunderstorm warnings | 17 | 16 | 6% | 10 | 80% | 26 min |
| Flash flood warnings | 2 | 2 | 0% | 0 |
Each office's whole area, 2013
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 7 | 2 | 71% | 6 | 33% | 5 min |
| NWS State College, PA: severe thunderstorm warnings | 212 | 149 | 30% | 371 | 87% | 29 min |
| NWS State College, PA: flash flood warnings | 33 | 23 | 30% | 72 | 92% | 72 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 11, 9:49 PM EST | Dense Fog Advisory | CTP | 13 hr |
| Jan 12, 7:22 PM EST | Dense Fog Advisory | CTP | 17 hr |
| Jan 13, 4:40 PM EST | Dense Fog Advisory | CTP | 14 hr |
| Jan 15, 4:02 AM EST | Winter Weather Advisory | CTP | 31 hr |
| Jan 27, 4:12 AM EST | Winter Weather Advisory | CTP | 39 hr |
| Jan 29, 2:58 PM EST | Flood Watch | CTP | 37 hr |
| Jan 29, 10:15 PM EST | Dense Fog Advisory | CTP | 11 hr |
| Jan 30, 9:32 AM EST | Wind Advisory | CTP | 32 hr |
| Jan 30, 10:19 AM EST | Mesoscale Discussion | SPC | 86 min |
| Jan 30, 12:54 PM EST | Mesoscale Discussion | SPC | 96 min |
| Jan 30, 1:16 PM EST | Special Weather Statement | CTP | 44 min |
| Jan 31, 2:40 AM EST | Areal Flood Warning | CTP | 6 hr |
| Feb 7, 2:11 PM EST | Winter Weather Advisory | CTP | 37 hr |
| Feb 10, 1:10 PM EST | Freezing Rain Advisory | CTP | 20 hr |
| Feb 21, 2:53 PM EST | Winter Weather Advisory | CTP | 45 hr |
| Mar 4, 2:39 PM EST | Winter Storm Watch | CTP | 21 hr |
| Mar 4, 2:39 PM EST | Winter Storm Warning | CTP | 47 hr |
| Mar 17, 2:47 PM EDT | Winter Weather Advisory | CTP | 41 hr |
| Mar 24, 3:55 AM EDT | Winter Weather Advisory | CTP | 40 hr |
| Mar 25, 5:31 AM EDT | Mesoscale Discussion | SPC | 6 hr |
| Apr 2, 3:47 PM EDT | Fire Weather Watch | CTP | 11 hr |
| Apr 3, 3:16 AM EDT | Red Flag Warning | CTP | 17 hr |
| Apr 5, 11:14 AM EDT | Red Flag Warning | CTP | 9 hr |
| Apr 10, 1:33 PM EDT | Mesoscale Discussion | SPC | 117 min |
| Apr 10, 6:13 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Apr 10, 8:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Apr 10, 11:11 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Apr 19, 1:27 PM EDT | Mesoscale Discussion | SPC | 63 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, 5:56 PM EDT | Special Weather Statement | CTP | 49 min |
| Apr 19, 6:02 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Apr 19, 6:39 PM EDT | Severe Thunderstorm Warning | CTP | 81 min |
| Apr 20, 12:43 AM EDT | Freeze Watch | CTP | 16 hr |
| Apr 20, 5:04 PM EDT | Freeze Warning | CTP | 15 hr |
| Apr 21, 1:22 PM EDT | Frost Advisory | CTP | 19 hr |
| Apr 24, 3:36 PM EDT | Mesoscale Discussion | SPC | 84 min |
| Apr 24, 4:55 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
| Apr 24, 5:23 PM EDT | Severe Thunderstorm Warning | CTP | 37 min |
| Apr 24, 6:11 PM EDT | Special Weather Statement | CTP | 34 min |
| Apr 24, 6:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 13, 3:42 AM EDT | Frost Advisory | CTP | 28 hr |
| May 22, 3:53 PM EDT | Mesoscale Discussion | SPC | 67 min |
| May 22, 6:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| May 22, 6:48 PM EDT | Severe Thunderstorm Warning | CTP | 42 min |
| May 22, 7:32 PM EDT | Special Weather Statement | CTP | 28 min |
| May 22, 10:19 PM EDT | Special Weather Statement | CTP | 41 min |
| May 23, 3:37 PM EDT | Mesoscale Discussion | SPC | 53 min |
| May 25, 6:44 AM EDT | Red Flag Warning | CTP | 12 hr |
| May 29, 5:20 AM EDT | Dense Fog Advisory | CTP | 4 hr |
| Jun 2, 3:18 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 2, 3:33 PM EDT | Severe Thunderstorm Warning | CTP | 42 min |
| Jun 7, 7:25 AM EDT | Flood Watch | CTP | 15 hr |
| Jun 10, 11:47 AM EDT | Flood Watch | CTP | 8 hr |
| Jun 10, 2:02 PM EDT | Tornado Watch | SPC | 10 hr |
| Jun 10, 4:38 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 10, 7:05 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jun 12, 12:41 PM EDT | Flood Watch | CTP | 27 hr |
| Jun 13, 2:40 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 3:58 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 13, 5:27 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 13, 6:52 AM EDT | Severe Thunderstorm Warning | CTP | 38 min |
| Jun 13, 7:31 AM EDT | Severe Thunderstorm Warning | CTP | 59 min |
| Jun 13, 7:55 AM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jun 16, 4:11 PM EDT | Special Weather Statement | CTP | 49 min |
| Jun 24, 1:48 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jun 25, 5:27 PM EDT | Mesoscale Discussion | SPC | 93 min |
| Jun 25, 6:20 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 25, 8:19 PM EDT | Severe Thunderstorm Warning | CTP | 56 min |
| Jun 25, 9:04 PM EDT | Severe Thunderstorm Warning | CTP | 71 min |
| Jun 26, 1:19 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 4:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 26, 5:56 PM EDT | Special Weather Statement | CTP | 64 min |
| 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, 4:36 PM EDT | Severe Thunderstorm Warning | CTP | 69 min |
| Jun 28, 1:02 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 28, 1:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 28, 3:30 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 28, 3:42 PM EDT | Special Weather Statement | CTP | 18 min |
| Jun 28, 4:09 PM EDT | Severe Thunderstorm Warning | CTP | 66 min |
| Jun 28, 7:11 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jun 30, 11:48 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 2:01 PM EDT | Flash Flood Watch | CTP | 56 hr |
| Jun 30, 11:36 PM EDT | Special Weather Statement | CTP | 54 min |
| Jul 7, 1:16 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 7, 3:19 PM EDT | Mesoscale Discussion | SPC | 116 min |
| Jul 7, 4:30 PM EDT | Special Weather Statement | CTP | 45 min |
| Jul 10, 3:45 PM EDT | Mesoscale Discussion | SPC | 30 min |
| Jul 10, 3:56 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Jul 10, 9:57 PM EDT | Special Weather Statement | CTP | 78 min |
| Jul 17, 1:52 PM EDT | Heat Advisory | CTP | 31 hr |
| Jul 18, 12:48 PM EDT | Heat Advisory | CTP | 31 hr |
| Jul 18, 6:19 PM EDT | Special Weather Statement | CTP | 26 min |
| Jul 18, 6:28 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 18, 6:48 PM EDT | Special Weather Statement | CTP | 27 min |
| Jul 19, 5:44 PM EDT | Severe Thunderstorm Warning | CTP | 91 min |
| Jul 19, 6:09 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 19, 6:59 PM EDT | Severe Thunderstorm Warning | CTP | 76 min |
| Jul 22, 1:18 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jul 22, 9:33 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 27, 5:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 27, 5:57 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 7, 5:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Aug 7, 8:55 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 7, 10:34 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Aug 13, 1:34 AM EDT | Flash Flood Watch | CTP | 9 hr |
| Aug 13, 4:40 AM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 13, 6:32 AM EDT | Flash Flood Warning | CTP | 4 hr |
| Aug 20, 3:48 AM EDT | Dense Fog Advisory | CTP | 5 hr |
| Sep 1, 1:17 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Sep 12, 12:37 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Sep 12, 2:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Sep 12, 3:51 PM EDT | Severe Thunderstorm Warning | CTP | 84 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, 8:57 AM EDT | Severe Thunderstorm Warning | CTP | 48 min |
| Oct 7, 9:21 AM EDT | Special Weather Statement | CTP | 69 min |
| Oct 7, 9:48 AM EDT | Special Weather Statement | CTP | 72 min |
| Oct 10, 6:38 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 10, 7:47 PM EDT | Areal Flood Warning | CTP | 38 hr |
| Oct 10, 11:04 PM EDT | Flood Watch | CTP | 21 hr |
| Oct 17, 6:36 PM EDT | Mesoscale Discussion | SPC | 114 min |
| Oct 17, 8:15 PM EDT | Special Weather Statement | CTP | 60 min |
| Oct 23, 4:03 AM EDT | Freeze Watch | CTP | 7 hr |
| Oct 23, 10:41 AM EDT | Freeze Warning | CTP | 22 hr |
| Oct 24, 2:11 PM EDT | Freeze Warning | CTP | 18 hr |
| Oct 25, 12:04 PM EDT | Freeze Warning | CTP | 21 hr |
| Oct 31, 9:48 PM EDT | Wind Advisory | CTP | 16 hr |
| Nov 1, 3:37 AM EDT | Mesoscale Discussion | SPC | 83 min |
| Nov 1, 4:17 AM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Nov 1, 5:38 AM EDT | Severe Thunderstorm Warning | CTP | 52 min |
| Nov 1, 5:41 AM EDT | Mesoscale Discussion | SPC | 94 min |
| Nov 1, 6:29 AM EDT | Severe Thunderstorm Warning | CTP | 61 min |
| Nov 17, 11:06 PM EST | Severe Thunderstorm Watch | SPC | 4 hr |
| Nov 18, 12:36 AM EST | Severe Thunderstorm Warning | CTP | 54 min |
| Nov 25, 3:20 PM EST | Winter Weather Advisory | CTP | 37 hr |
| Dec 7, 11:19 AM EST | Winter Storm Watch | CTP | 17 hr |
| Dec 7, 6:13 PM EST | Winter Weather Advisory | CTP | 40 hr |
| Dec 8, 11:05 AM EST | Mesoscale Discussion | SPC | 3 hr |
| Dec 8, 2:30 PM EST | Mesoscale Discussion | SPC | 2 hr |
| Dec 9, 2:21 PM EST | Winter Weather Advisory | CTP | 21 hr |
| Dec 9, 7:57 PM EST | Dense Fog Advisory | CTP | 6 hr |
| Dec 12, 9:08 PM EST | Winter Storm Watch | CTP | 14 hr |
| Dec 13, 11:32 AM EST | Winter Storm Warning | CTP | 40 hr |
| Dec 16, 2:52 PM EST | Winter Weather Advisory | CTP | 19 hr |
| Dec 22, 3:37 AM EST | Severe Thunderstorm Watch | SPC | 5 hr |
| Dec 22, 6:14 AM EST | Mesoscale Discussion | SPC | 61 min |
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 | 17 |
| Severe Thunderstorm Watch | 11 |
| Tornado Watch | 4 |
| Mesoscale Discussion | 43 |
| Special Weather Statement | 16 |
| Flooding | |
| Areal Flood Warning | 2 |
| Flash Flood Warning | 2 |
| Flash Flood Watch | 2 |
| Flood Watch | 5 |
| Areal Flood Advisory | 8 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 3 |
| Freezing Rain Advisory | 1 |
| Winter Weather Advisory | 10 |
| Heat | |
| Heat Advisory | 2 |
| Cold | |
| Freeze Warning | 4 |
| Freeze Watch | 2 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 2 |
| Fire | |
| Red Flag Warning | 3 |
| Fire Weather Watch | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
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.