Alert archive / Pennsylvania / Dauphin County
Weather alerts in Dauphin County, Pennsylvania, 2015
173 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Dauphin County and its neighbors
Each county as a circle sized by its count in 2015. Tap one for its archive.
- Alerts
- 173
- Warnings
- 44
- Watches
- 21
- Advisories
- 48
- Busiest month
- June49 alerts
- Busiest day
- June 8, 201511 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 3 tornado warnings covering Dauphin County in 2015 had a tornado report inside them.
Dauphin County, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 3 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 26 | 19 | 27% | 19 | 79% | 22 min |
| Flash flood warnings | 3 | 2 | 33% | 0 |
Each office's whole area, 2015
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 12 | 1 | 92% | 7 | 14% | 11 min |
| NWS State College, PA: severe thunderstorm warnings | 174 | 111 | 36% | 302 | 78% | 27 min |
| NWS State College, PA: flash flood warnings | 17 | 9 | 47% | 15 | 93% | 47 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, 3:04 PM EST | Winter Weather Advisory | CTP | 29 hr |
| Jan 3, 9:59 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Jan 5, 2:32 PM EST | Winter Weather Advisory | CTP | 24 hr |
| Jan 6, 3:28 PM EST | Wind Chill Advisory | CTP | 46 hr |
| Jan 7, 1:04 PM EST | Special Weather Statement | CTP | 26 min |
| Jan 7, 1:50 PM EST | Special Weather Statement | CTP | 25 min |
| Jan 11, 4:49 AM EST | Winter Weather Advisory | CTP | 38 hr |
| Jan 18, 6:52 AM EST | Freezing Rain Advisory | CTP | 5 hr |
| Jan 18, 6:48 PM EST | Special Weather Statement | CTP | 3 hr |
| Jan 18, 9:44 PM EST | Special Weather Statement | CTP | 3 hr |
| Jan 20, 2:54 PM EST | Winter Weather Advisory | CTP | 34 hr |
| Jan 23, 3:58 AM EST | Winter Weather Advisory | CTP | 32 hr |
| Jan 23, 10:23 AM EST | Winter Storm Warning | CTP | 25 hr |
| Jan 23, 11:48 PM EST | Mesoscale Discussion | SPC | 6 hr |
| Jan 25, 5:15 AM EST | Winter Weather Advisory | CTP | 50 hr |
| Jan 28, 2:38 PM EST | Winter Weather Advisory | CTP | 40 hr |
| Jan 30, 3:42 PM EST | Winter Storm Watch | CTP | 23 hr |
| Jan 31, 2:57 PM EST | Winter Storm Warning | CTP | 43 hr |
| Jan 31, 2:57 PM EST | Winter Weather Advisory | CTP | 43 hr |
| Feb 2, 11:38 AM EST | Wind Advisory | CTP | 8 hr |
| Feb 8, 4:23 AM EST | Winter Weather Advisory | CTP | 34 hr |
| Feb 9, 4:09 AM EST | Freezing Rain Advisory | CTP | 18 hr |
| Feb 12, 3:10 AM EST | Wind Chill Advisory | CTP | 32 hr |
| Feb 12, 11:20 AM EST | Special Weather Statement | CTP | 40 min |
| Feb 13, 3:22 AM EST | Wind Chill Watch | CTP | 24 hr |
| Feb 13, 3:32 AM EST | High Wind Watch | CTP | 24 hr |
| Feb 13, 2:16 PM EST | Winter Weather Advisory | CTP | 41 hr |
| Feb 14, 3:12 AM EST | High Wind Warning | CTP | 30 hr |
| Feb 14, 3:12 AM EST | Wind Advisory | CTP | 37 hr |
| Feb 14, 3:42 AM EST | Wind Chill Warning | CTP | 54 hr |
| Feb 14, 6:35 PM EST | Special Weather Statement | CTP | 40 min |
| Feb 16, 2:47 AM EST | Winter Weather Advisory | CTP | 28 hr |
| Feb 18, 4:05 AM EST | Wind Chill Advisory | CTP | 56 hr |
| Feb 18, 6:16 PM EST | Special Weather Statement | CTP | 89 min |
| Feb 20, 10:26 AM EST | Winter Storm Watch | CTP | 5 hr |
| Feb 20, 3:10 PM EST | Winter Storm Warning | CTP | 39 hr |
| Feb 20, 3:10 PM EST | Winter Weather Advisory | CTP | 39 hr |
| Feb 28, 12:14 PM EST | Winter Weather Advisory | CTP | 43 hr |
| Mar 2, 1:54 PM EST | Winter Weather Advisory | CTP | 41 hr |
| Mar 3, 2:30 PM EST | Winter Storm Watch | CTP | 14 hr |
| Mar 3, 7:01 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Mar 4, 4:13 AM EST | Winter Storm Warning | CTP | 39 hr |
| Mar 4, 9:41 AM EST | Winter Weather Advisory | CTP | 30 hr |
| Mar 10, 5:30 PM EDT | Dense Fog Advisory | CTP | 16 hr |
| Mar 19, 4:09 AM EDT | Winter Weather Advisory | CTP | 38 hr |
| Mar 25, 2:54 AM EDT | Freezing Rain Advisory | CTP | 9 hr |
| Mar 26, 5:24 PM EDT | Special Weather Statement | CTP | 51 min |
| Apr 11, 1:47 PM EDT | Frost Advisory | CTP | 18 hr |
| Apr 17, 2:39 PM EDT | Fire Weather Watch | CTP | 12 hr |
| Apr 18, 2:54 AM EDT | Red Flag Warning | CTP | 17 hr |
| Apr 20, 3:08 PM EDT | Tornado Watch | SPC | 9 hr |
| Apr 20, 5:01 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Apr 20, 7:59 PM EDT | Severe Thunderstorm Warning | CTP | 61 min |
| Apr 20, 8:10 PM EDT | Tornado Warning | CTP | 35 min |
| Apr 20, 8:43 PM EDT | Tornado Warning | CTP | 32 min |
| Apr 20, 8:54 PM EDT | Severe Thunderstorm Warning | CTP | 66 min |
| Apr 20, 9:00 PM EDT | Severe Thunderstorm Warning | CTP | 60 min |
| Apr 20, 9:17 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Apr 22, 12:18 PM EDT | Special Weather Statement | CTP | 87 min |
| Apr 23, 3:35 AM EDT | Freeze Watch | CTP | 10 hr |
| Apr 23, 3:35 AM EDT | Freeze Watch | CTP | 34 hr |
| Apr 23, 1:21 PM EDT | Freeze Warning | CTP | 18 hr |
| Apr 24, 2:02 PM EDT | Freeze Warning | CTP | 18 hr |
| Apr 30, 6:42 PM EDT | Special Weather Statement | CTP | 48 min |
| May 16, 1:35 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 16, 4:34 PM EDT | Special Weather Statement | CTP | 56 min |
| May 18, 8:11 PM EDT | Special Weather Statement | CTP | 64 min |
| May 18, 8:39 PM EDT | Special Weather Statement | CTP | 66 min |
| May 27, 12:14 PM EDT | Special Weather Statement | CTP | 31 min |
| May 27, 12:21 PM EDT | Mesoscale Discussion | SPC | 54 min |
| May 27, 12:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| May 27, 1:01 PM EDT | Areal Flood Advisory | CTP | 119 min |
| May 27, 1:26 PM EDT | Special Weather Statement | CTP | 34 min |
| May 27, 1:42 PM EDT | Severe Thunderstorm Warning | CTP | 48 min |
| May 27, 2:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| May 31, 12:51 PM EDT | Mesoscale Discussion | SPC | 114 min |
| May 31, 5:28 PM EDT | Special Weather Statement | CTP | 17 min |
| May 31, 5:35 PM EDT | Special Weather Statement | CTP | 25 min |
| May 31, 6:04 PM EDT | Areal Flood Advisory | CTP | 116 min |
| May 31, 6:17 PM EDT | Severe Thunderstorm Warning | CTP | 17 min |
| May 31, 10:16 PM EDT | Special Weather Statement | CTP | 74 min |
| Jun 1, 2:06 PM EDT | Special Weather Statement | CTP | 24 min |
| Jun 8, 1:31 PM EDT | Mesoscale Discussion | SPC | 119 min |
| Jun 8, 2:34 PM EDT | Tornado Watch | SPC | 5 hr |
| Jun 8, 2:42 PM EDT | Severe Thunderstorm Warning | CTP | 48 min |
| Jun 8, 3:20 PM EDT | Mesoscale Discussion | SPC | 85 min |
| Jun 8, 3:30 PM EDT | Tornado Warning | CTP | 45 min |
| Jun 8, 4:18 PM EDT | Severe Thunderstorm Warning | CTP | 72 min |
| Jun 8, 4:19 PM EDT | Flash Flood Warning | CTP | 5 hr |
| Jun 8, 4:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| Jun 8, 5:06 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jun 8, 5:08 PM EDT | Severe Thunderstorm Warning | CTP | 67 min |
| Jun 8, 6:11 PM EDT | Severe Thunderstorm Warning | CTP | 79 min |
| Jun 11, 2:47 PM EDT | Mesoscale Discussion | SPC | 118 min |
| Jun 11, 7:35 PM EDT | Severe Thunderstorm Warning | CTP | 70 min |
| Jun 12, 2:03 PM EDT | Mesoscale Discussion | SPC | 87 min |
| Jun 12, 4:12 PM EDT | Severe Thunderstorm Warning | CTP | 45 min |
| Jun 12, 9:18 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Jun 12, 9:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 14, 5:40 PM EDT | Severe Thunderstorm Warning | CTP | 50 min |
| Jun 14, 6:21 PM EDT | Severe Thunderstorm Warning | CTP | 54 min |
| Jun 15, 9:28 PM EDT | Special Weather Statement | CTP | 92 min |
| Jun 18, 11:46 PM EDT | Special Weather Statement | CTP | 44 min |
| Jun 19, 2:41 PM EDT | Flood Watch | CTP | 39 hr |
| Jun 20, 6:24 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jun 20, 6:35 PM EDT | Special Weather Statement | CTP | 40 min |
| Jun 20, 7:28 PM EDT | Flash Flood Warning | CTP | 3 hr |
| Jun 20, 7:30 PM EDT | Special Weather Statement | CTP | 30 min |
| Jun 20, 8:06 PM EDT | Special Weather Statement | CTP | 24 min |
| Jun 20, 8:24 PM EDT | Special Weather Statement | CTP | 36 min |
| Jun 20, 9:17 PM EDT | Severe Thunderstorm Warning | CTP | 43 min |
| Jun 20, 10:01 PM EDT | Areal Flood Advisory | CTP | 119 min |
| Jun 23, 10:20 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 23, 1:37 PM EDT | Severe Thunderstorm Warning | CTP | 38 min |
| Jun 23, 3:25 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jun 23, 3:35 PM EDT | Special Weather Statement | CTP | 25 min |
| Jun 23, 3:37 PM EDT | Special Weather Statement | CTP | 23 min |
| Jun 23, 3:40 PM EDT | Severe Thunderstorm Warning | CTP | 65 min |
| Jun 23, 4:14 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jun 23, 4:15 PM EDT | Severe Thunderstorm Warning | CTP | 60 min |
| Jun 23, 5:47 PM EDT | Mesoscale Discussion | SPC | 88 min |
| Jun 23, 7:41 PM EDT | Mesoscale Discussion | SPC | 94 min |
| Jun 26, 3:55 AM EDT | Flood Watch | CTP | 44 hr |
| Jun 27, 3:59 PM EDT | Special Weather Statement | CTP | 46 min |
| Jun 30, 12:31 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 1:21 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jun 30, 2:14 PM EDT | Flash Flood Watch | CTP | 13 hr |
| Jun 30, 4:15 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jun 30, 7:38 PM EDT | Mesoscale Discussion | SPC | 67 min |
| Jun 30, 9:58 PM EDT | Special Weather Statement | CTP | 62 min |
| Jul 5, 3:57 AM EDT | Dense Fog Advisory | CTP | 5 hr |
| Jul 9, 12:59 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 9, 1:27 PM EDT | Tornado Watch | SPC | 6 hr |
| Jul 9, 3:09 PM EDT | Mesoscale Discussion | SPC | 96 min |
| Jul 9, 4:55 PM EDT | Mesoscale Discussion | SPC | 95 min |
| Jul 9, 5:07 PM EDT | Severe Thunderstorm Warning | CTP | 98 min |
| Jul 9, 5:55 PM EDT | Areal Flood Advisory | CTP | 2 hr |
| Jul 9, 6:01 PM EDT | Severe Thunderstorm Warning | CTP | 74 min |
| Jul 18, 2:18 PM EDT | Heat Advisory | CTP | 31 hr |
| Jul 18, 6:29 PM EDT | Special Weather Statement | CTP | 31 min |
| Jul 26, 10:59 PM EDT | Special Weather Statement | CTP | 76 min |
| Jul 26, 11:37 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jul 30, 12:20 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 4, 12:25 AM EDT | Severe Thunderstorm Warning | CTP | 53 min |
| Aug 20, 11:49 AM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 20, 1:33 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Aug 20, 2:37 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 20, 2:53 PM EDT | Flash Flood Watch | CTP | 9 hr |
| Aug 20, 3:45 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Aug 20, 5:19 PM EDT | Severe Thunderstorm Warning | CTP | 56 min |
| Aug 20, 5:29 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 24, 4:50 PM EDT | Severe Thunderstorm Warning | CTP | 40 min |
| Sep 10, 11:11 AM EDT | Flash Flood Watch | CTP | 7 hr |
| Sep 10, 1:25 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 9, 2:23 PM EDT | Special Weather Statement | CTP | 67 min |
| Oct 9, 2:36 PM EDT | Severe Thunderstorm Warning | CTP | 39 min |
| Oct 9, 2:50 PM EDT | Severe Thunderstorm Warning | CTP | 55 min |
| Oct 9, 3:11 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Oct 16, 1:49 PM EDT | Freeze Watch | CTP | 14 hr |
| Oct 16, 1:49 PM EDT | Freeze Watch | CTP | 38 hr |
| Oct 17, 3:45 AM EDT | Freeze Warning | CTP | 29 hr |
| Oct 18, 3:26 AM EDT | Freeze Warning | CTP | 30 hr |
| Oct 28, 9:40 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Oct 28, 11:35 PM EDT | Areal Flood Warning | CTP | 3 hr |
| Nov 13, 9:51 AM EST | Wind Advisory | CTP | 8 hr |
| Dec 6, 7:44 PM EST | Dense Fog Advisory | CTP | 16 hr |
| Dec 10, 5:35 AM EST | Dense Fog Advisory | CTP | 4 hr |
| Dec 10, 10:03 AM EST | Dense Fog Advisory | CTP | 117 min |
| Dec 22, 9:30 PM EST | Dense Fog Advisory | CTP | 15 hr |
| Dec 25, 7:40 AM EST | Dense Fog Advisory | CTP | 4 hr |
| Dec 28, 3:44 AM EST | Winter Weather Advisory | CTP | 30 hr |
| Dec 30, 1:06 AM EST | Dense Fog Advisory | CTP | 8 hr |
| Dec 31, 1:28 AM EST | Dense Fog Advisory | CTP | 2 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 archive20142016
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.