Alert archive / Pennsylvania / Somerset County
Weather alerts in Somerset County, Pennsylvania, 2016
112 weather alerts in 2016, 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 2016. Tap one for its archive.
- Alerts
- 112
- Warnings
- 16
- Watches
- 11
- Advisories
- 43
- Busiest month
- June21 alerts
- Busiest day
- June 16, 201610 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 1 tornado warnings covering Somerset County in 2016 had a tornado report inside them.
Somerset County, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 1 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 6 | 3 | 50% | 5 | 80% | 29 min |
| Flash flood warnings | 0 | 0 |
Each office's whole area, 2016
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS State College, PA: tornado warnings | 4 | 3 | 25% | 7 | 71% | 14 min |
| NWS State College, PA: severe thunderstorm warnings | 104 | 73 | 30% | 197 | 79% | 29 min |
| NWS State College, PA: flash flood warnings | 9 | 6 | 33% | 9 | 100% | 46 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 |
|---|---|---|---|
| Dec 31, 8:00 PM EST | Winter Weather Advisory | CTP | 7 hr |
| Jan 1, 3:12 AM EST | Winter Weather Advisory | CTP | 6 hr |
| Jan 8, 11:46 AM EST | Freezing Rain Advisory | CTP | 17 hr |
| Jan 10, 4:43 AM EST | Wind Advisory | CTP | 17 hr |
| Jan 12, 2:08 AM EST | Winter Weather Advisory | CTP | 29 hr |
| Jan 12, 2:16 PM EST | Special Weather Statement | CTP | 74 min |
| Jan 12, 3:08 PM EST | Special Weather Statement | CTP | 82 min |
| Jan 17, 2:54 PM EST | Wind Chill Advisory | CTP | 43 hr |
| Jan 20, 3:42 PM EST | Winter Storm Watch | CTP | 37 hr |
| Jan 21, 2:47 PM EST | Winter Storm Warning | CTP | 53 hr |
| Jan 25, 9:30 PM EST | Freezing Rain Advisory | CTP | 12 hr |
| Jan 28, 1:13 PM EST | Winter Weather Advisory | CTP | 27 hr |
| Feb 8, 4:34 AM EST | Winter Weather Advisory | CTP | 4 days |
| Feb 12, 4:35 AM EST | Wind Chill Advisory | CTP | 54 hr |
| Feb 12, 1:11 PM EST | Winter Weather Advisory | CTP | 26 hr |
| Feb 14, 2:32 PM EST | Winter Weather Advisory | CTP | 43 hr |
| Feb 15, 5:10 AM EST | Winter Storm Warning | CTP | 35 hr |
| Feb 15, 8:29 PM EST | Mesoscale Discussion | SPC | 5 hr |
| Feb 16, 10:28 AM EST | Winter Storm Warning | CTP | 3 hr |
| Feb 23, 3:14 PM EST | Freezing Rain Advisory | CTP | 17 hr |
| Feb 25, 2:54 AM EST | Winter Weather Advisory | CTP | 28 hr |
| Feb 29, 2:18 AM EST | Wind Advisory | CTP | 8 hr |
| Mar 1, 12:27 PM EST | Wind Advisory | CTP | 21 hr |
| Mar 16, 4:08 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| Mar 24, 5:49 PM EDT | Red Flag Warning | CTP | 2 hr |
| Mar 28, 3:42 AM EDT | Wind Advisory | CTP | 18 hr |
| Apr 1, 4:20 PM EDT | Wind Advisory | CTP | 40 hr |
| Apr 2, 10:33 AM EDT | High Wind Warning | CTP | 22 hr |
| Apr 2, 7:28 PM EDT | Special Weather Statement | CTP | 62 min |
| Apr 8, 3:46 AM EDT | Winter Weather Advisory | CTP | 36 hr |
| Apr 8, 6:02 AM EDT | Special Weather Statement | CTP | 73 min |
| Apr 9, 1:49 AM EDT | Special Weather Statement | CTP | 56 min |
| Apr 26, 1:19 PM EDT | Mesoscale Discussion | SPC | 86 min |
| Apr 26, 1:54 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
| Apr 26, 6:46 PM EDT | Mesoscale Discussion | SPC | 59 min |
| May 1, 5:48 PM EDT | Special Weather Statement | CTP | 27 min |
| May 15, 2:23 AM EDT | Freeze Watch | CTP | 11 hr |
| May 15, 1:00 PM EDT | Freeze Warning | CTP | 19 hr |
| May 23, 2:25 AM EDT | Dense Fog Advisory | CTP | 6 hr |
| May 29, 1:52 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jun 4, 6:03 PM EDT | Special Weather Statement | CTP | 42 min |
| Jun 4, 6:34 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Jun 4, 6:47 PM EDT | Special Weather Statement | CTP | 43 min |
| Jun 4, 6:52 PM EDT | Tornado Warning | CTP | 23 min |
| Jun 11, 2:32 PM EDT | Mesoscale Discussion | SPC | 58 min |
| Jun 11, 4:31 PM EDT | Special Weather Statement | CTP | 29 min |
| Jun 11, 7:10 PM EDT | Special Weather Statement | CTP | 35 min |
| Jun 11, 7:44 PM EDT | Special Weather Statement | CTP | 46 min |
| Jun 16, 1:08 PM EDT | Mesoscale Discussion | SPC | 97 min |
| Jun 16, 1:57 PM EDT | Special Weather Statement | CTP | 33 min |
| Jun 16, 1:58 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
| Jun 16, 2:30 PM EDT | Special Weather Statement | CTP | 45 min |
| Jun 16, 2:36 PM EDT | Severe Thunderstorm Warning | CTP | 54 min |
| Jun 16, 3:43 PM EDT | Severe Thunderstorm Warning | CTP | 62 min |
| Jun 16, 4:09 PM EDT | Flash Flood Watch | CTP | 11 hr |
| Jun 16, 4:20 PM EDT | Mesoscale Discussion | SPC | 55 min |
| Jun 16, 5:03 PM EDT | Severe Thunderstorm Warning | CTP | 57 min |
| Jun 16, 5:42 PM EDT | Areal Flood Advisory | CTP | 4 hr |
| Jun 21, 12:21 PM EDT | Special Weather Statement | CTP | 54 min |
| Jun 22, 4:47 AM EDT | Flash Flood Watch | CTP | 23 hr |
| Jun 24, 5:03 PM EDT | Special Weather Statement | CTP | 42 min |
| Jul 14, 9:56 PM EDT | Special Weather Statement | CTP | 64 min |
| Jul 23, 2:34 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 24, 3:54 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Jul 25, 6:27 AM EDT | Special Weather Statement | CTP | 48 min |
| Jul 25, 12:41 PM EDT | Mesoscale Discussion | SPC | 64 min |
| Jul 25, 12:43 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 25, 3:03 PM EDT | Mesoscale Discussion | SPC | 57 min |
| Jul 25, 4:32 PM EDT | Special Weather Statement | CTP | 43 min |
| Jul 25, 4:52 PM EDT | Mesoscale Discussion | SPC | 83 min |
| Jul 25, 5:08 PM EDT | Special Weather Statement | CTP | 52 min |
| Aug 14, 3:45 PM EDT | Areal Flood Advisory | CTP | 3 hr |
| Aug 14, 5:04 PM EDT | Special Weather Statement | CTP | 26 min |
| Aug 15, 1:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Aug 16, 6:40 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 16, 6:44 PM EDT | Special Weather Statement | CTP | 61 min |
| Aug 16, 7:07 PM EDT | Severe Thunderstorm Warning | CTP | 53 min |
| Aug 16, 8:04 PM EDT | Severe Thunderstorm Warning | CTP | 41 min |
| Sep 7, 3:06 PM EDT | Mesoscale Discussion | SPC | 2 hr |
| Sep 28, 7:47 AM EDT | Flood Watch | CTP | 35 hr |
| Oct 4, 1:18 AM EDT | Dense Fog Advisory | CTP | 8 hr |
| Oct 6, 2:04 AM EDT | Dense Fog Advisory | CTP | 7 hr |
| Oct 9, 3:46 AM EDT | Frost Advisory | CTP | 29 hr |
| Oct 10, 4:27 AM EDT | Frost Advisory | CTP | 29 hr |
| Oct 20, 2:28 PM EDT | Mesoscale Discussion | SPC | 3 hr |
| Oct 20, 3:39 PM EDT | Flash Flood Watch | CTP | 23 hr |
| Oct 20, 3:46 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Oct 20, 6:55 PM EDT | Special Weather Statement | CTP | 65 min |
| Oct 20, 6:58 PM EDT | Mesoscale Discussion | SPC | 92 min |
| Oct 20, 7:04 PM EDT | Severe Thunderstorm Warning | CTP | 56 min |
| Nov 18, 1:59 PM EST | Winter Weather Advisory | CTP | 64 hr |
| Nov 26, 11:02 AM EST | Winter Weather Advisory | CTP | 3 hr |
| Nov 29, 9:06 PM EST | Dense Fog Advisory | CTP | 10 hr |
| Dec 2, 9:46 PM EST | Special Weather Statement | CTP | 59 min |
| Dec 4, 9:55 PM EST | Winter Weather Advisory | CTP | 5 hr |
| Dec 5, 2:12 PM EST | Winter Weather Advisory | CTP | 25 hr |
| Dec 6, 3:08 PM EST | Ice Storm Warning | CTP | 6 hr |
| Dec 10, 2:20 PM EST | Winter Weather Advisory | CTP | 43 hr |
| Dec 11, 10:05 PM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 14, 3:07 PM EST | Wind Chill Advisory | CTP | 42 hr |
| Dec 14, 3:07 PM EST | Winter Weather Advisory | CTP | 24 hr |
| Dec 16, 3:39 AM EST | Winter Weather Advisory | CTP | 44 hr |
| Dec 16, 6:05 PM EST | Winter Storm Warning | CTP | 20 hr |
| Dec 17, 3:08 AM EST | Mesoscale Discussion | SPC | 4 hr |
| Dec 18, 9:07 AM EST | Winter Weather Advisory | CTP | 3 hr |
| Dec 18, 9:24 AM EST | Areal Flood Advisory | CTP | 6 hr |
| Dec 25, 2:06 PM EST | Freezing Rain Advisory | CTP | 21 hr |
| Dec 28, 1:39 PM EST | Winter Storm Watch | CTP | 19 hr |
| Dec 28, 1:39 PM EST | Winter Weather Advisory | CTP | 24 hr |
| Dec 29, 8:49 AM EST | Winter Weather Advisory | CTP | 26 hr |
| Dec 30, 10:57 AM EST | Winter Storm Warning | CTP | 11 hr |
| Dec 30, 11:47 AM EST | Special Weather Statement | CTP | 58 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 | 6 |
| Tornado Warning | 1 |
| Severe Thunderstorm Watch | 4 |
| Mesoscale Discussion | 18 |
| Special Weather Statement | 24 |
| Flooding | |
| Flash Flood Watch | 3 |
| Flood Watch | 1 |
| Areal Flood Advisory | 5 |
| Winter | |
| Ice Storm Warning | 1 |
| Winter Storm Warning | 5 |
| Winter Storm Watch | 2 |
| Freezing Rain Advisory | 4 |
| Winter Weather Advisory | 19 |
| Cold | |
| Freeze Warning | 1 |
| Freeze Watch | 1 |
| Frost Advisory | 2 |
| Wind Chill Advisory | 3 |
| Wind and dust | |
| High Wind Warning | 1 |
| Wind Advisory | 5 |
| Fire | |
| Red Flag Warning | 1 |
| Fog and smoke | |
| Dense Fog Advisory | 5 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20152017
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.