Alert archive / Pennsylvania / Somerset County

Weather alerts in Somerset County, Pennsylvania, 2012

187 weather alerts in 2012, 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 2012. Tap one for its archive.

Alerts: 187
Warnings: 56
Watches: 29
Advisories: 38
Busiest month: July50 alerts
Busiest day: July 26, 201210 alerts

Over time

By month

Warning verification

How often warnings here had a storm report inside them, and how much warning the reports had.

Somerset County, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	27	15	44%	13	92%	29 min
Flash flood warnings	2	1	50%	0

Each office's whole area, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS State College, PA: tornado warnings	6	2	67%	8	50%	24 min
NWS State College, PA: severe thunderstorm warnings	226	133	41%	370	84%	28 min
NWS State College, PA: flash flood warnings	21	11	48%	24	88%	62 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 1, 4:10 AM EST	Wind Advisory	CTP	21 hr
Jan 1, 2:12 PM EST	Winter Weather Advisory	CTP	48 hr
Jan 2, 10:24 PM EST	Winter Storm Warning	CTP	21 hr
Jan 12, 4:50 AM EST	Winter Weather Advisory	CTP	41 hr
Jan 12, 2:36 PM EST	Wind Advisory	CTP	28 hr
Jan 16, 4:10 AM EST	Winter Weather Advisory	CTP	26 hr
Jan 16, 4:50 PM EST	Special Weather Statement	CTP	55 min
Jan 17, 4:10 AM EST	Wind Advisory	CTP	24 hr
Jan 17, 7:53 PM EST	Special Weather Statement	CTP	52 min
Jan 19, 4:11 PM EST	Winter Storm Watch	CTP	12 hr
Jan 20, 4:28 AM EST	Winter Storm Warning	CTP	30 hr
Jan 21, 12:59 AM EST	Mesoscale Discussion	SPC	4 hr
Jan 22, 3:09 AM EST	Freezing Rain Advisory	CTP	33 hr
Jan 23, 5:36 PM EST	Special Weather Statement	CTP	54 min
Jan 25, 11:03 PM EST	Winter Weather Advisory	CTP	10 hr
Jan 29, 5:06 PM EST	Special Weather Statement	CTP	114 min
Jan 29, 6:17 PM EST	Special Weather Statement	CTP	118 min
Feb 8, 1:49 AM EST	Winter Weather Advisory	CTP	18 hr
Feb 10, 3:09 PM EST	Winter Weather Advisory	CTP	52 hr
Feb 11, 2:42 PM EST	Wind Advisory	CTP	22 hr
Feb 23, 1:46 PM EST	High Wind Watch	CTP	8 hr
Feb 23, 9:52 PM EST	High Wind Warning	CTP	24 hr
Feb 24, 4:47 AM EST	Wind Advisory	CTP	30 hr
Feb 24, 12:52 PM EST	Winter Weather Advisory	CTP	33 hr
Mar 2, 2:17 PM EST	Wind Advisory	CTP	29 hr
Mar 4, 7:04 PM EST	Winter Weather Advisory	CTP	15 hr
Mar 25, 10:16 PM EDT	Freeze Watch	CTP	6 hr
Mar 26, 4:30 AM EDT	Freeze Warning	CTP	29 hr
Mar 28, 10:23 AM EDT	Mesoscale Discussion	SPC	2 hr
Mar 28, 12:20 PM EDT	Special Weather Statement	CTP	25 min
Mar 28, 1:03 PM EDT	Special Weather Statement	CTP	27 min
Mar 29, 5:34 AM EDT	Freeze Watch	CTP	9 hr
Mar 29, 2:17 PM EDT	Freeze Warning	CTP	19 hr
Mar 30, 11:05 PM EDT	Special Weather Statement	CTP	25 min
Mar 30, 11:39 PM EDT	Special Weather Statement	CTP	51 min
Apr 2, 1:34 PM EDT	Frost Advisory	CTP	18 hr
Apr 2, 1:34 PM EDT	Freeze Warning	CTP	18 hr
Apr 4, 3:04 PM EDT	Freeze Warning	CTP	17 hr
Apr 5, 2:10 PM EDT	Freeze Warning	CTP	18 hr
Apr 6, 11:01 AM EDT	Red Flag Warning	CTP	33 hr
Apr 6, 11:05 AM EDT	Freeze Warning	CTP	21 hr
Apr 7, 3:58 AM EDT	Fire Weather Watch	CTP	16 hr
Apr 7, 2:41 PM EDT	Freeze Warning	CTP	17 hr
Apr 7, 8:27 PM EDT	Red Flag Warning	CTP	24 hr
Apr 8, 4:49 AM EDT	Fire Weather Watch	CTP	17 hr
Apr 8, 9:49 PM EDT	Red Flag Warning	CTP	22 hr
Apr 10, 4:12 AM EDT	Freeze Watch	CTP	7 hr
Apr 10, 11:08 AM EDT	Freeze Warning	CTP	22 hr
Apr 11, 4:45 AM EDT	Freeze Watch	CTP	10 hr
Apr 11, 2:21 PM EDT	Freeze Watch	CTP	13 hr
Apr 11, 2:21 PM EDT	Freeze Warning	CTP	18 hr
Apr 12, 3:48 AM EDT	Freeze Warning	CTP	29 hr
Apr 21, 4:17 PM EDT	Winter Storm Watch	CTP	24 hr
Apr 22, 4:20 PM EDT	Winter Storm Warning	CTP	34 hr
Apr 24, 7:00 PM EDT	Freeze Warning	CTP	13 hr
Apr 26, 4:46 AM EDT	Freeze Watch	CTP	10 hr
Apr 26, 2:39 PM EDT	Freeze Warning	CTP	18 hr
Apr 27, 4:26 AM EDT	Freeze Watch	CTP	5 hr
Apr 27, 9:40 AM EDT	Freeze Warning	CTP	23 hr
Apr 28, 4:04 AM EDT	Freeze Watch	CTP	11 hr
May 2, 4:56 PM EDT	Mesoscale Discussion	SPC	2 hr
May 4, 1:26 PM EDT	Mesoscale Discussion	SPC	2 hr
May 10, 2:58 PM EDT	Frost Advisory	CTP	17 hr
May 26, 3:26 PM EDT	Areal Flood Advisory	CTP	2 hr
May 27, 1:41 PM EDT	Mesoscale Discussion	SPC	64 min
May 27, 1:47 PM EDT	Special Weather Statement	CTP	43 min
May 27, 2:03 PM EDT	Severe Thunderstorm Warning	CTP	43 min
May 27, 5:21 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
May 27, 5:41 PM EDT	Severe Thunderstorm Warning	CTP	79 min
May 27, 6:08 PM EDT	Severe Thunderstorm Warning	CTP	52 min
May 27, 6:34 PM EDT	Mesoscale Discussion	SPC	56 min
May 27, 7:07 PM EDT	Severe Thunderstorm Warning	CTP	38 min
May 27, 7:51 PM EDT	Special Weather Statement	CTP	39 min
May 27, 9:56 PM EDT	Flash Flood Watch	CTP	117 min
May 27, 10:11 PM EDT	Flash Flood Warning	CTP	2 hr
May 27, 10:30 PM EDT	Special Weather Statement	CTP	45 min
May 27, 11:14 PM EDT	Special Weather Statement	CTP	46 min
May 29, 10:27 AM EDT	Severe Thunderstorm Watch	SPC	5 hr
May 29, 1:25 PM EDT	Mesoscale Discussion	SPC	65 min
May 29, 3:12 PM EDT	Mesoscale Discussion	SPC	63 min
Jun 1, 1:03 PM EDT	Mesoscale Discussion	SPC	87 min
Jun 1, 1:28 PM EDT	Tornado Watch	SPC	8 hr
Jun 1, 3:35 PM EDT	Mesoscale Discussion	SPC	55 min
Jun 1, 5:03 PM EDT	Special Weather Statement	CTP	27 min
Jun 1, 5:22 PM EDT	Special Weather Statement	CTP	53 min
Jun 1, 5:44 PM EDT	Severe Thunderstorm Warning	CTP	61 min
Jun 3, 1:37 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 3, 5:06 PM EDT	Special Weather Statement	CTP	54 min
Jun 3, 6:11 PM EDT	Special Weather Statement	CTP	49 min
Jun 3, 7:33 PM EDT	Special Weather Statement	CTP	27 min
Jun 12, 6:34 PM EDT	Special Weather Statement	CTP	71 min
Jun 12, 7:16 PM EDT	Areal Flood Advisory	CTP	119 min
Jun 12, 8:58 PM EDT	Special Weather Statement	CTP	77 min
Jun 29, 6:03 PM EDT	Mesoscale Discussion	SPC	87 min
Jun 29, 6:34 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 29, 6:49 PM EDT	Severe Thunderstorm Warning	CTP	56 min
Jun 29, 7:46 PM EDT	Flash Flood Warning	CTP	3 hr
Jun 29, 7:51 PM EDT	Mesoscale Discussion	SPC	114 min
Jun 29, 7:54 PM EDT	Special Weather Statement	CTP	81 min
Jun 29, 8:12 PM EDT	Severe Thunderstorm Warning	CTP	78 min
Jul 1, 8:32 PM EDT	Mesoscale Discussion	SPC	88 min
Jul 3, 4:33 PM EDT	Special Weather Statement	CTP	57 min
Jul 4, 12:07 AM EDT	Special Weather Statement	CTP	53 min
Jul 4, 2:27 AM EDT	Special Weather Statement	CTP	63 min
Jul 4, 4:04 PM EDT	Mesoscale Discussion	SPC	56 min
Jul 4, 5:34 PM EDT	Severe Thunderstorm Warning	CTP	41 min
Jul 4, 6:06 PM EDT	Severe Thunderstorm Warning	CTP	54 min
Jul 4, 6:58 PM EDT	Severe Thunderstorm Warning	CTP	50 min
Jul 4, 7:15 PM EDT	Severe Thunderstorm Warning	CTP	45 min
Jul 4, 7:33 PM EDT	Severe Thunderstorm Warning	CTP	42 min
Jul 4, 8:05 PM EDT	Mesoscale Discussion	SPC	55 min
Jul 7, 6:14 PM EDT	Severe Thunderstorm Watch	SPC	3 hr
Jul 14, 8:41 PM EDT	Areal Flood Advisory	CTP	3 hr
Jul 15, 12:58 PM EDT	Special Weather Statement	CTP	62 min
Jul 18, 12:32 PM EDT	Special Weather Statement	CTP	28 min
Jul 18, 12:41 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 18, 1:15 PM EDT	Severe Thunderstorm Warning	CTP	75 min
Jul 18, 1:24 PM EDT	Areal Flood Advisory	CTP	3 hr
Jul 18, 2:56 PM EDT	Special Weather Statement	CTP	79 min
Jul 18, 3:22 PM EDT	Severe Thunderstorm Warning	CTP	53 min
Jul 20, 4:23 AM EDT	Flash Flood Watch	CTP	19 hr
Jul 20, 6:08 PM EDT	Areal Flood Advisory	CTP	112 min
Jul 24, 7:56 AM EDT	Severe Thunderstorm Warning	CTP	34 min
Jul 24, 8:57 AM EDT	Special Weather Statement	CTP	78 min
Jul 24, 9:12 AM EDT	Severe Thunderstorm Warning	CTP	63 min
Jul 24, 10:33 AM EDT	Special Weather Statement	CTP	42 min
Jul 24, 10:41 AM EDT	Severe Thunderstorm Warning	CTP	49 min
Jul 24, 11:48 AM EDT	Mesoscale Discussion	SPC	87 min
Jul 24, 1:08 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 24, 2:39 PM EDT	Severe Thunderstorm Warning	CTP	40 min
Jul 26, 5:03 AM EDT	Special Weather Statement	CTP	72 min
Jul 26, 1:16 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 26, 3:37 PM EDT	Mesoscale Discussion	SPC	113 min
Jul 26, 4:48 PM EDT	Severe Thunderstorm Warning	CTP	57 min
Jul 26, 5:30 PM EDT	Severe Thunderstorm Warning	CTP	60 min
Jul 26, 6:06 PM EDT	Mesoscale Discussion	SPC	84 min
Jul 26, 6:26 PM EDT	Severe Thunderstorm Warning	CTP	64 min
Jul 26, 6:42 PM EDT	Areal Flood Advisory	CTP	3 hr
Jul 26, 7:20 PM EDT	Severe Thunderstorm Warning	CTP	70 min
Jul 26, 7:52 PM EDT	Severe Thunderstorm Warning	CTP	53 min
Jul 27, 4:06 PM EDT	Flash Flood Watch	CTP	12 hr
Jul 31, 7:27 AM EDT	Special Weather Statement	CTP	63 min
Jul 31, 12:36 PM EDT	Special Weather Statement	CTP	54 min
Jul 31, 12:56 PM EDT	Areal Flood Advisory	CTP	3 hr
Jul 31, 1:05 PM EDT	Severe Thunderstorm Warning	CTP	42 min
Jul 31, 1:51 PM EDT	Special Weather Statement	CTP	24 min
Jul 31, 3:29 PM EDT	Special Weather Statement	CTP	46 min
Jul 31, 4:06 PM EDT	Areal Flood Advisory	CTP	114 min
Jul 31, 4:11 PM EDT	Special Weather Statement	CTP	34 min
Jul 31, 4:41 PM EDT	Special Weather Statement	CTP	34 min
Aug 4, 1:56 PM EDT	Areal Flood Advisory	CTP	3 hr
Aug 9, 1:27 PM EDT	Special Weather Statement	CTP	63 min
Aug 9, 1:59 PM EDT	Severe Thunderstorm Warning	CTP	61 min
Aug 9, 2:37 PM EDT	Areal Flood Advisory	CTP	3 hr
Aug 9, 2:58 PM EDT	Severe Thunderstorm Warning	CTP	62 min
Sep 1, 3:51 PM EDT	Special Weather Statement	CTP	54 min
Sep 1, 5:45 PM EDT	Areal Flood Advisory	CTP	90 min
Sep 4, 9:10 PM EDT	Special Weather Statement	CTP	50 min
Sep 7, 3:21 AM EDT	Special Weather Statement	PBZ	24 min
Sep 7, 6:38 PM EDT	Mesoscale Discussion	SPC	97 min
Sep 8, 5:00 AM EDT	Mesoscale Discussion	SPC	60 min
Sep 8, 11:44 AM EDT	Special Weather Statement	CTP	61 min
Sep 8, 11:57 AM EDT	Severe Thunderstorm Warning	CTP	63 min
Oct 7, 4:54 AM EDT	Frost Advisory	CTP	28 hr
Oct 8, 5:31 AM EDT	Frost Advisory	CTP	16 hr
Oct 8, 5:31 AM EDT	Freeze Watch	CTP	9 hr
Oct 10, 6:08 PM EDT	Freeze Warning	CTP	15 hr
Oct 27, 4:39 AM EDT	Flood Watch	CTP	3 days
Oct 27, 3:05 PM EDT	High Wind Watch	CTP	13 hr
Oct 28, 4:11 AM EDT	High Wind Warning	CTP	48 hr
Oct 29, 2:52 PM EDT	Winter Weather Advisory	CTP	47 hr
Oct 29, 5:10 PM EDT	Areal Flood Warning	CTP	11 hr
Oct 30, 4:12 AM EDT	Areal Flood Warning	CTP	5 hr
Oct 30, 4:18 AM EDT	Wind Advisory	CTP	6 hr
Oct 30, 4:34 AM EDT	Mesoscale Discussion	SPC	4 hr
Oct 30, 1:03 PM EDT	Areal Flood Advisory	CTP	4 hr
Oct 30, 10:58 PM EDT	Winter Storm Warning	CTP	15 hr
Oct 31, 2:05 PM EDT	Winter Weather Advisory	CTP	21 hr
Dec 19, 2:27 AM EST	Winter Storm Watch	CTP	34 hr
Dec 20, 3:16 AM EST	Winter Storm Warning	CTP	59 hr
Dec 24, 2:56 AM EST	Winter Weather Advisory	CTP	26 hr
Dec 24, 4:00 PM EST	Winter Storm Watch	CTP	22 hr
Dec 25, 2:09 PM EST	Winter Storm Warning	CTP	40 hr
Dec 26, 12:48 PM EST	Mesoscale Discussion	SPC	6 hr
Dec 26, 2:41 PM EST	Wind Advisory	CTP	25 hr
Dec 28, 2:57 AM EST	Winter Weather Advisory	CTP	58 hr
Dec 30, 9:39 AM EST	Wind Advisory	CTP	5 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	27
Severe Thunderstorm Watch	7
Tornado Watch	1
Mesoscale Discussion	23
Special Weather Statement	41
Flooding
Areal Flood Warning	2
Flash Flood Warning	2
Flash Flood Watch	3
Flood Watch	1
Areal Flood Advisory	12
Winter
Winter Storm Warning	6
Winter Storm Watch	4
Freezing Rain Advisory	1
Winter Weather Advisory	12
Cold
Freeze Warning	14
Freeze Watch	9
Frost Advisory	4
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	9
Fire
Red Flag Warning	3
Fire Weather Watch	2

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2011 2013

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.