Alert archive / Pennsylvania / Franklin County

Weather alerts in Franklin County, Pennsylvania, 2015

146 weather alerts in 2015, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Franklin County and its neighbors

Each county as a circle sized by its count in 2015. Tap one for its archive.

Alerts: 146
Warnings: 25
Watches: 21
Advisories: 42
Busiest month: June42 alerts
Busiest day: June 20, 20158 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 Franklin County in 2015 had a tornado report inside them.

Franklin County, 2015

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	13	9	31%	5	80%	17 min
Flash flood warnings	2	1	50%	1	100%	54 min

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 11, 4:49 AM EST	Winter Weather Advisory	CTP	38 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 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 Weather Advisory	CTP	43 hr
Feb 2, 11:38 AM EST	Wind Advisory	CTP	8 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 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, 5:58 PM EST	Special Weather Statement	CTP	62 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, 4:42 PM EST	Special Weather Statement	CTP	33 min
Feb 18, 5:15 PM EST	Special Weather Statement	CTP	75 min
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 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 4, 4:13 AM EST	Winter Storm Warning	CTP	39 hr
Mar 5, 7:58 AM EST	Mesoscale Discussion	SPC	5 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
Apr 11, 1:47 PM EDT	Frost Advisory	CTP	18 hr
Apr 20, 1:54 PM EDT	Mesoscale Discussion	SPC	3 hr
Apr 20, 3:08 PM EDT	Tornado Watch	SPC	9 hr
Apr 20, 5:00 PM EDT	Special Weather Statement	CTP	45 min
Apr 20, 5:01 PM EDT	Mesoscale Discussion	SPC	119 min
Apr 20, 6:48 PM EDT	Special Weather Statement	CTP	57 min
Apr 20, 6:48 PM EDT	Tornado Warning	CTP	42 min
Apr 20, 7:56 PM EDT	Severe Thunderstorm Warning	CTP	64 min
Apr 20, 8:29 PM EDT	Areal Flood Advisory	CTP	3 hr
Apr 20, 8:30 PM EDT	Severe Thunderstorm Warning	CTP	60 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, 3:28 PM EDT	Special Weather Statement	CTP	47 min
May 6, 3:21 PM EDT	Mesoscale Discussion	SPC	114 min
May 12, 12:11 AM EDT	Special Weather Statement	CTP	64 min
May 16, 1:35 PM EDT	Mesoscale Discussion	SPC	2 hr
May 16, 3:36 PM EDT	Severe Thunderstorm Warning	CTP	39 min
May 16, 3:39 PM EDT	Areal Flood Advisory	CTP	2 hr
May 16, 3:45 PM EDT	Flash Flood Watch	CTP	26 hr
May 27, 12:04 PM EDT	Special Weather Statement	CTP	26 min
May 31, 12:51 PM EDT	Mesoscale Discussion	SPC	114 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, 3:20 PM EDT	Mesoscale Discussion	SPC	85 min
Jun 8, 4:18 PM EDT	Severe Thunderstorm Warning	CTP	72 min
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, 5:12 PM EDT	Severe Thunderstorm Warning	CTP	63 min
Jun 12, 2:03 PM EDT	Mesoscale Discussion	SPC	87 min
Jun 12, 2:56 PM EDT	Special Weather Statement	CTP	64 min
Jun 12, 9:41 PM EDT	Mesoscale Discussion	SPC	94 min
Jun 12, 9:42 PM EDT	Special Weather Statement	CTP	33 min
Jun 14, 1:56 PM EDT	Special Weather Statement	CTP	34 min
Jun 14, 2:06 PM EDT	Mesoscale Discussion	SPC	84 min
Jun 15, 12:50 AM EDT	Special Weather Statement	CTP	25 min
Jun 15, 1:12 AM EDT	Special Weather Statement	CTP	33 min
Jun 16, 12:15 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 18, 7:11 PM EDT	Special Weather Statement	CTP	34 min
Jun 18, 7:23 PM EDT	Special Weather Statement	CTP	37 min
Jun 18, 7:40 PM EDT	Severe Thunderstorm Warning	CTP	36 min
Jun 19, 2:41 PM EDT	Flood Watch	CTP	39 hr
Jun 20, 1:36 PM EDT	Mesoscale Discussion	SPC	114 min
Jun 20, 2:23 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 20, 6:24 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 20, 7:19 PM EDT	Areal Flood Advisory	CTP	3 hr
Jun 20, 7:24 PM EDT	Special Weather Statement	CTP	36 min
Jun 20, 7:30 PM EDT	Special Weather Statement	CTP	30 min
Jun 20, 7:46 PM EDT	Severe Thunderstorm Warning	CTP	59 min
Jun 20, 7:47 PM EDT	Severe Thunderstorm Warning	CTP	43 min
Jun 23, 10:20 AM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 23, 3:08 PM EDT	Severe Thunderstorm Warning	CTP	67 min
Jun 23, 3:25 PM EDT	Mesoscale Discussion	SPC	95 min
Jun 23, 4:15 PM EDT	Severe Thunderstorm Warning	CTP	60 min
Jun 23, 4:49 PM EDT	Severe Thunderstorm Warning	CTP	56 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, 10:21 PM EDT	Special Weather Statement	CTP	24 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, 3:48 PM EDT	Mesoscale Discussion	SPC	117 min
Jun 30, 7:38 PM EDT	Mesoscale Discussion	SPC	67 min
Jun 30, 9:47 PM EDT	Special Weather Statement	CTP	28 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, 4:19 PM EDT	Special Weather Statement	CTP	26 min
Jul 9, 4:50 PM EDT	Severe Thunderstorm Warning	CTP	55 min
Jul 9, 4:55 PM EDT	Mesoscale Discussion	SPC	95 min
Jul 18, 7:35 AM EDT	Areal Flood Advisory	CTP	115 min
Jul 18, 2:18 PM EDT	Heat Advisory	CTP	31 hr
Jul 19, 5:15 PM EDT	Special Weather Statement	CTP	60 min
Jul 26, 11:37 PM EDT	Areal Flood Advisory	CTP	3 hr
Jul 27, 12:02 AM EDT	Severe Thunderstorm Warning	CTP	73 min
Jul 27, 12:51 AM EDT	Areal Flood Advisory	CTP	3 hr
Jul 27, 1:10 AM EDT	Flash Flood Warning	CTP	3 hr
Aug 4, 1:59 AM EDT	Special Weather Statement	CTP	31 min
Aug 20, 10:46 AM EDT	Special Weather Statement	CTP	89 min
Aug 20, 11:49 AM EDT	Mesoscale Discussion	SPC	2 hr
Aug 20, 3:45 PM EDT	Mesoscale Discussion	SPC	3 hr
Aug 20, 3:56 PM EDT	Special Weather Statement	CTP	79 min
Aug 30, 8:45 PM EDT	Areal Flood Advisory	CTP	3 hr
Sep 2, 3:46 PM EDT	Special Weather Statement	CTP	89 min
Sep 10, 11:11 AM EDT	Flash Flood Watch	CTP	7 hr
Sep 29, 4:19 AM EDT	Flash Flood Watch	CTP	24 hr
Oct 9, 3:11 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 9, 3:14 PM EDT	Special Weather Statement	CTP	31 min
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
Nov 13, 9:51 AM EST	Wind Advisory	CTP	8 hr
Dec 6, 7:44 PM EST	Dense Fog Advisory	CTP	16 hr
Dec 7, 8:40 PM EST	Dense Fog Advisory	CTP	17 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 25, 11:47 PM EST	Dense Fog Advisory	CTP	3 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.

Product	Alerts
Severe storms
Severe Thunderstorm Warning	13
Tornado Warning	1
Severe Thunderstorm Watch	3
Tornado Watch	3
Mesoscale Discussion	28
Special Weather Statement	30
Flooding
Flash Flood Warning	2
Flash Flood Watch	4
Flood Watch	2
Areal Flood Advisory	7
Winter
Winter Storm Warning	3
Winter Storm Watch	3
Freezing Rain Advisory	2
Winter Weather Advisory	14
Heat
Heat Advisory	1
Cold
Freeze Warning	4
Wind Chill Warning	1
Freeze Watch	4
Wind Chill Watch	1
Frost Advisory	1
Wind Chill Advisory	3
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	3
Fog and smoke
Dense Fog Advisory	11

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2014 2016

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.