Alert archive / Pennsylvania / Lancaster County

Weather alerts in Lancaster County, Pennsylvania, 2026

203 weather alerts in 2026, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Lancaster County and its neighbors

Each county as a circle sized by its count in 2026. Tap one for its archive.

Alerts: 203
Warnings: 80
Watches: 33
Advisories: 29
Busiest month: July52 alerts
Busiest day: July 6, 20268 alerts

Over time

By month

Warning verification

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

2 of 4 tornado warnings covering Lancaster County in 2026 had a tornado report inside them; 4 of 5 tornado reports fell inside a warning, on average 14 minutes after it went out.

Lancaster County, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	4	2	50%	5	80%	14 min
Severe thunderstorm warnings	45	34	24%	54	91%	24 min
Flash flood warnings	17	12	29%	46	100%	53 min

Each office's whole area, 2026

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS State College, PA: tornado warnings	46	12	74%	20	75%	11 min
NWS State College, PA: severe thunderstorm warnings	352	258	27%	753	86%	23 min
NWS State College, PA: flash flood warnings	94	59	37%	193	93%	70 min

An office's figures cover every county it serves, including across state lines.

The year is still running; reports filed late and damage surveys can still change these figures.

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, 3:00 AM EST	Mesoscale Discussion	SPC	4 hr
Jan 1, 3:15 AM EST	Snow Squall Warning	CTP	90 min
Jan 16, 1:40 AM EST	Winter Weather Advisory	CTP	41 hr
Jan 17, 2:29 PM EST	Winter Weather Advisory	CTP	28 hr
Jan 22, 2:06 AM EST	Winter Storm Watch	CTP	32 hr
Jan 22, 12:09 PM EST	Cold Weather Advisory	CTP	46 hr
Jan 23, 10:20 AM EST	Winter Storm Warning	CTP	64 hr
Jan 25, 6:01 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 25, 3:02 PM EST	Mesoscale Discussion	SPC	4 hr
Jan 26, 2:14 AM EST	Cold Weather Advisory	CTP	35 hr
Jan 27, 1:16 AM EST	Cold Weather Advisory	CTP	33 hr
Jan 28, 1:20 AM EST	Cold Weather Advisory	CTP	35 hr
Jan 29, 1:12 AM EST	Cold Weather Advisory	CTP	33 hr
Jan 30, 1:08 AM EST	Cold Weather Advisory	CTP	34 hr
Jan 31, 1:32 AM EST	Cold Weather Advisory	CTP	32 hr
Feb 5, 2:02 AM EST	Extreme Cold Watch	CTP	24 hr
Feb 6, 2:03 AM EST	Cold Weather Advisory	CTP	12 hr
Feb 6, 2:03 AM EST	Extreme Cold Warning	CTP	56 hr
Feb 6, 2:03 AM EST	Wind Advisory	CTP	44 hr
Feb 8, 1:12 PM EST	Cold Weather Advisory	CTP	20 hr
Feb 17, 8:13 PM EST	Dense Fog Advisory	CTP	14 hr
Feb 18, 8:02 PM EST	Dense Fog Advisory	CTP	15 hr
Feb 20, 1:40 PM EST	Winter Storm Watch	CTP	24 hr
Feb 21, 1:43 PM EST	Winter Storm Warning	CTP	67 hr
Feb 27, 5:04 AM EST	Freezing Fog Advisory	CTP	5 hr
Mar 2, 2:01 AM EST	Winter Weather Advisory	CTP	38 hr
Mar 3, 5:58 AM EST	Mesoscale Discussion	SPC	5 hr
Mar 4, 8:37 PM EST	Dense Fog Advisory	CTP	10 hr
Mar 8, 1:52 AM EST	Dense Fog Advisory	CTP	6 hr
Mar 11, 1:45 PM EDT	Tornado Watch	SPC	6 hr
Mar 11, 4:34 PM EDT	Mesoscale Discussion	SPC	86 min
Mar 11, 6:27 PM EDT	Severe Thunderstorm Warning	CTP	33 min
Mar 11, 6:47 PM EDT	Mesoscale Discussion	SPC	118 min
Mar 11, 7:02 PM EDT	Severe Thunderstorm Warning	CTP	13 min
Mar 11, 7:04 PM EDT	Severe Thunderstorm Warning	CTP	41 min
Mar 12, 3:00 AM EDT	Wind Advisory	CTP	59 hr
Mar 16, 3:28 AM EDT	Wind Advisory	CTP	20 hr
Mar 16, 10:57 AM EDT	Mesoscale Discussion	SPC	93 min
Mar 16, 11:30 AM EDT	Tornado Watch	SPC	6 hr
Mar 16, 12:26 PM EDT	Severe Thunderstorm Warning	CTP	34 min
Mar 16, 2:52 PM EDT	Severe Thunderstorm Warning	CTP	53 min
Mar 16, 3:14 PM EDT	Mesoscale Discussion	SPC	91 min
Mar 16, 10:00 PM EDT	Severe Thunderstorm Warning	CTP	30 min
Mar 21, 3:30 AM EDT	Dense Fog Advisory	CTP	5 hr
Mar 22, 6:36 PM EDT	Mesoscale Discussion	SPC	114 min
Apr 6, 11:42 AM EDT	Freeze Watch	CTP	14 hr
Apr 7, 1:47 AM EDT	Freeze Watch	CTP	32 hr
Apr 7, 1:47 AM EDT	Freeze Warning	CTP	31 hr
Apr 8, 9:25 AM EDT	Freeze Warning	CTP	24 hr
Apr 11, 1:20 PM EDT	Frost Advisory	CTP	19 hr
Apr 18, 12:33 PM EDT	Freeze Watch	CTP	37 hr
Apr 20, 1:14 AM EDT	Freeze Warning	CTP	32 hr
May 2, 12:14 PM EDT	Frost Advisory	CTP	21 hr
May 10, 3:10 PM EDT	Mesoscale Discussion	SPC	3 hr
May 13, 7:52 PM EDT	Severe Thunderstorm Warning	CTP	23 min
May 19, 5:29 PM EDT	Special Weather Statement	CTP	46 min
May 19, 5:40 PM EDT	Mesoscale Discussion	SPC	65 min
May 20, 12:23 PM EDT	Mesoscale Discussion	SPC	97 min
May 20, 12:39 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 20, 3:09 PM EDT	Mesoscale Discussion	SPC	96 min
May 20, 3:40 PM EDT	Special Weather Statement	CTP	35 min
May 20, 3:52 PM EDT	Severe Thunderstorm Warning	CTP	38 min
May 20, 4:01 PM EDT	Severe Thunderstorm Warning	CTP	44 min
May 20, 4:16 PM EDT	Severe Thunderstorm Warning	CTP	44 min
May 26, 3:27 AM EDT	Dense Fog Advisory	CTP	5 hr
Jun 6, 1:42 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 6, 4:17 PM EDT	Mesoscale Discussion	SPC	118 min
Jun 6, 5:33 PM EDT	Severe Thunderstorm Warning	CTP	57 min
Jun 6, 6:09 PM EDT	Severe Thunderstorm Warning	CTP	46 min
Jun 6, 6:36 PM EDT	Mesoscale Discussion	SPC	114 min
Jun 10, 3:57 PM EDT	Special Weather Statement	CTP	33 min
Jun 10, 5:36 PM EDT	Heat Advisory	CTP	50 hr
Jun 11, 3:02 PM EDT	Mesoscale Discussion	SPC	118 min
Jun 11, 4:12 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 11, 6:09 PM EDT	Mesoscale Discussion	SPC	3 hr
Jun 11, 8:29 PM EDT	Special Weather Statement	CTP	46 min
Jun 14, 6:22 PM EDT	Mesoscale Discussion	SPC	113 min
Jun 14, 7:06 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 14, 8:34 PM EDT	Special Weather Statement	CTP	26 min
Jun 14, 8:39 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	51 min
Jun 14, 8:53 PM EDT	Tornado Warning	CTP	52 min
Jun 14, 9:25 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 14, 9:41 PM EDT	Special Weather Statement	CTP	34 min
Jun 22, 1:25 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 22, 2:08 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 22, 3:53 PM EDT	Special Weather Statement	CTP	37 min
Jun 22, 3:56 PM EDT	Severe Thunderstorm Warning	CTP	34 min
Jun 22, 4:21 PM EDT	Severe Thunderstorm Warning	CTP	24 min
Jun 29, 2:22 AM EDT	Extreme Heat Watch	CTP	24 hr
Jun 30, 2:43 AM EDT	Heat Advisory	CTP	5 days
Jun 30, 2:43 AM EDT	Extreme Heat Warning	CTP	5 days
Jul 3, 3:25 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 3, 4:34 PM EDT	Mesoscale Discussion	SPC	116 min
Jul 4, 3:28 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 4, 6:37 PM EDT	Severe Thunderstorm Warning	CTP	38 min
Jul 4, 6:47 PM EDT	Mesoscale Discussion	SPC	118 min
Jul 4, 7:08 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	67 min
Jul 4, 7:10 PM EDT	Severe Thunderstorm Warning	CTP	50 min
Jul 4, 7:38 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	61 min
Jul 4, 8:19 PM EDT	Mesoscale Discussion	SPC	116 min
Jul 5, 3:17 AM EDT	Flood Watch	CTP	52 hr
Jul 5, 6:00 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 5, 6:44 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 5, 7:27 PM EDT	Severe Thunderstorm Warning Considerable damage threat	CTP	63 min
Jul 5, 8:18 PM EDT	Severe Thunderstorm Warning	CTP	72 min
Jul 5, 8:20 PM EDT	Mesoscale Discussion	SPC	115 min
Jul 5, 8:49 PM EDT	Flash Flood Warning	CTP	3 hr
Jul 5, 9:16 PM EDT	Flash Flood Warning	CTP	3 hr
Jul 5, 9:20 PM EDT	Flash Flood Warning Considerable damage threat	CTP	2 hr
Jul 5, 10:10 PM EDT	Special Weather Statement	CTP	35 min
Jul 5, 11:25 PM EDT	Areal Flood Warning	CTP	3 hr
Jul 5, 11:28 PM EDT	Areal Flood Warning	CTP	3 hr
Jul 9, 2:10 AM EDT	Flood Watch	CTP	18 hr
Jul 9, 2:06 PM EDT	Flash Flood Warning	CTP	2 hr
Jul 9, 2:30 PM EDT	Special Weather Statement	CTP	45 min
Jul 9, 2:49 PM EDT	Flash Flood Warning	CTP	3 hr
Jul 9, 6:17 PM EDT	Flash Flood Warning	CTP	101 min
Jul 10, 3:52 PM EDT	Flash Flood Warning	CTP	113 min
Jul 11, 2:56 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 11, 4:11 PM EDT	Severe Thunderstorm Warning	CTP	49 min
Jul 11, 4:55 PM EDT	Severe Thunderstorm Warning	CTP	42 min
Jul 11, 5:15 PM EDT	Flash Flood Warning	CTP	2 hr
Jul 13, 1:40 PM EDT	Heat Advisory	CTP	54 hr
Jul 18, 9:21 AM EDT	Flood Watch	CTP	13 hr
Jul 18, 12:50 PM EDT	Mesoscale Discussion	SPC	85 min
Jul 18, 1:02 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 18, 3:22 PM EDT	Special Weather Statement	CTP	23 min
Jul 18, 10:03 PM EDT	Severe Thunderstorm Warning	CTP	42 min
Jul 18, 10:47 PM EDT	Severe Thunderstorm Warning	CTP	28 min
Jul 21, 1:23 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 21, 2:06 PM EDT	Tornado Watch	SPC	7 hr
Jul 21, 3:05 PM EDT	Special Weather Statement	CTP	55 min
Jul 21, 3:33 PM EDT	Severe Thunderstorm Warning	CTP	57 min
Jul 21, 3:40 PM EDT	Mesoscale Discussion	SPC	95 min
Jul 27, 2:11 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 2:34 AM EDT	Flood Watch	CTP	18 hr
Jul 28, 12:08 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 12:51 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 28, 2:30 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 4:09 PM EDT	Severe Thunderstorm Warning	CTP	66 min
Jul 28, 4:44 PM EDT	Severe Thunderstorm Warning	CTP	61 min
Jul 28, 4:53 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 5:39 PM EDT	Flash Flood Warning	CTP	3 hr
Aug 6, 1:01 AM EDT	Heat Advisory	CTP	19 hr
Aug 6, 1:39 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 6, 6:34 PM EDT	Special Weather Statement	CTP	26 min
Aug 6, 7:47 PM EDT	Special Weather Statement	CTP	28 min
Aug 7, 12:50 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 7, 1:22 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 7, 1:56 PM EDT	Severe Thunderstorm Warning	CTP	49 min
Aug 7, 2:42 PM EDT	Flash Flood Warning	CTP	3 hr
Aug 7, 2:44 PM EDT	Severe Thunderstorm Warning	CTP	31 min
Aug 7, 2:59 PM EDT	Flash Flood Warning	CTP	3 hr
Aug 7, 3:16 PM EDT	Severe Thunderstorm Warning	CTP	29 min
Aug 7, 5:44 PM EDT	Areal Flood Warning	CTP	3 hr
Aug 8, 11:55 AM EDT	Mesoscale Discussion	SPC	95 min
Aug 8, 12:22 PM EDT	Severe Thunderstorm Warning	CTP	38 min
Aug 8, 12:59 PM EDT	Severe Thunderstorm Warning	CTP	31 min
Aug 10, 8:51 AM EDT	Severe Thunderstorm Warning	CTP	39 min
Aug 10, 9:29 AM EDT	Mesoscale Discussion	SPC	91 min
Aug 10, 12:24 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 10, 1:38 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 3:10 PM EDT	Severe Thunderstorm Warning	CTP	25 min
Aug 17, 4:35 PM EDT	Special Weather Statement	CTP	40 min
Aug 17, 5:17 PM EDT	Special Weather Statement	CTP	28 min
Aug 20, 8:25 AM EDT	Flood Watch	CTP	10 hr
Aug 20, 1:53 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 20, 2:31 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 20, 4:12 PM EDT	Severe Thunderstorm Warning	CTP	78 min
Aug 20, 4:29 PM EDT	Tornado Warning	CTP	31 min
Aug 20, 4:41 PM EDT	Flash Flood Warning	CTP	3 hr
Aug 20, 4:47 PM EDT	Tornado Warning	CTP	28 min
Aug 27, 2:55 AM EDT	Flood Watch	CTP	22 hr
Aug 27, 3:17 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 27, 4:09 PM EDT	Special Weather Statement	CTP	36 min
Aug 27, 4:19 PM EDT	Severe Thunderstorm Warning	CTP	56 min
Aug 27, 6:52 PM EDT	Flash Flood Warning	CTP	3 hr
Aug 27, 7:22 PM EDT	Severe Thunderstorm Warning	CTP	38 min
Aug 27, 7:26 PM EDT	Mesoscale Discussion	SPC	94 min
Aug 27, 7:49 PM EDT	Severe Thunderstorm Warning	CTP	41 min
Aug 27, 8:16 PM EDT	Flash Flood Warning	CTP	3 hr
Aug 27, 8:24 PM EDT	Tornado Warning	CTP	21 min
Aug 27, 9:58 PM EDT	Flash Flood Warning	CTP	90 min
Aug 27, 10:08 PM EDT	Areal Flood Warning	CTP	67 min
Aug 27, 11:14 PM EDT	Areal Flood Warning	CTP	6 hr
Aug 28, 2:41 AM EDT	River Flood Warning	CTP	14 hr
Aug 30, 7:33 PM EDT	Special Weather Statement	CTP	27 min
Aug 30, 9:56 PM EDT	Flash Flood Warning	CTP	3 hr
Sep 1, 3:13 PM EDT	Mesoscale Discussion	SPC	2 hr
Sep 1, 4:32 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Sep 1, 6:32 PM EDT	Mesoscale Discussion	SPC	88 min
Sep 1, 7:31 PM EDT	Severe Thunderstorm Warning	CTP	29 min
Sep 1, 7:59 PM EDT	Severe Thunderstorm Warning	CTP	16 min
Sep 2, 3:35 AM EDT	Heat Advisory	CTP	40 hr
Sep 2, 11:24 AM EDT	Severe Thunderstorm Warning	CTP	51 min
Sep 2, 11:49 AM EDT	Severe Thunderstorm Warning	CTP	56 min
Sep 2, 12:12 PM EDT	Severe Thunderstorm Warning	CTP	33 min
Sep 2, 12:43 PM EDT	Severe Thunderstorm Warning	CTP	32 min
Sep 3, 12:10 AM EDT	Special Weather Statement	CTP	50 min
Sep 3, 12:50 AM EDT	Special Weather Statement	CTP	70 min
Sep 3, 2:42 AM EDT	Flood Watch	CTP	20 hr
Sep 3, 4:11 AM EDT	Flash Flood Warning	CTP	4 hr
Sep 3, 4:33 PM EDT	Severe Thunderstorm Watch	SPC	6 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	45
Tornado Warning	4
Severe Thunderstorm Watch	16
Tornado Watch	3
Mesoscale Discussion	42
Special Weather Statement	19
Flooding
Areal Flood Warning	5
Flash Flood Warning	17
River Flood Warning	1
Flood Watch	7
Winter
Snow Squall Warning	1
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	3
Heat
Extreme Heat Warning	1
Extreme Heat Watch	1
Heat Advisory	5
Cold
Extreme Cold Warning	1
Freeze Warning	3
Extreme Cold Watch	1
Freeze Watch	3
Cold Weather Advisory	9
Frost Advisory	2
Wind and dust
Wind Advisory	3
Fog and smoke
Dense Fog Advisory	6
Freezing Fog Advisory	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2025

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.