Weather alerts in Pennsylvania, May 2010

335 weather alerts in May 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered any part of the state, so the counties below add up to more than the state.

Weather alerts by county

Each county as a circle sized by its count in May 2010. Tap one for its archive.

Alerts: 335
Warnings: 125
Watches: 23
Advisories: 35
Busiest day: May 14, 201061 alerts

Over time

By day

Days in UTC, the clock the archive keeps.

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	Counties	Lasted
Apr 30, 8:09 PM EDT	Areal Flood Warning	CTP	Lancaster, York	31 days
May 2, 4:45 PM EDT	Mesoscale Discussion	SPC	Adams, Bedford, Franklin, Fulton	60 min
May 2, 5:47 PM EDT	Special Weather Statement	CTP	Bedford	43 min
May 2, 5:58 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Bedford, Cumberland, Franklin, Fulton, Lancaster and 1 more	5 hr
May 2, 6:15 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Franklin, Fulton	60 min
May 2, 6:45 PM EDT	Special Weather Statement	CTP	Bedford, Somerset	45 min
May 2, 7:17 PM EDT	Special Weather Statement	CTP	Cumberland, Franklin	43 min
May 2, 8:05 PM EDT	Special Weather Statement	CTP	Cumberland, Franklin	40 min
May 2, 8:27 PM EDT	Mesoscale Discussion	SPC	Adams, Bedford, Cumberland, Dauphin, Franklin, Fulton and 6 more	63 min
May 2, 8:36 PM EDT	Special Weather Statement	CTP	Adams	39 min
May 2, 9:02 PM EDT	Areal Flood Advisory	CTP	Cumberland, Franklin, Fulton	3 hr
May 2, 10:07 PM EDT	Areal Flood Advisory	CTP	Cumberland, Dauphin, Lebanon, Perry, York	3 hr
May 2, 10:10 PM EDT	Special Weather Statement	CTP	Lebanon	65 min
May 2, 10:47 PM EDT	Special Weather Statement	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Schuylkill and 1 more	88 min
May 2, 11:05 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	25 min
May 2, 11:17 PM EDT	Special Weather Statement	CTP	Bedford, Fulton	58 min
May 2, 11:26 PM EDT	Areal Flood Advisory	PHI	Berks, Chester, Lehigh, Montgomery, Northampton	3 hr
May 2, 11:32 PM EDT	Special Weather Statement	CTP	Lancaster	28 min
May 2, 11:33 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery, Northampton	42 min
May 2, 11:47 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Montgomery	43 min
May 2, 11:49 PM EDT	Special Weather Statement	CTP	Fulton	41 min
May 3, 12:05 AM EDT	Areal Flood Advisory	CTP	Cumberland, Dauphin, Franklin, Fulton, Huntingdon, Lebanon and 2 more	4 hr
May 3, 12:16 AM EDT	Severe Thunderstorm Warning	PHI	Bucks, Montgomery, Northampton	34 min
May 3, 12:30 AM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Lehigh, Montgomery, Northampton	3 hr
May 3, 12:39 AM EDT	Special Weather Statement	CTP	Franklin	21 min
May 3, 12:42 AM EDT	Flash Flood Watch	CTP	Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more	4 hr
May 3, 1:02 AM EDT	Flash Flood Warning	CTP	Cumberland, Dauphin, Lebanon, Perry, York	4 hr
May 3, 1:51 AM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more	6 hr
May 3, 6:14 AM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, Dauphin, Lancaster, Lebanon, Perry and 1 more	3 hr
May 3, 9:23 AM EDT	River Flood Warning	CTP	Cumberland, York	5 hr
May 3, 1:10 PM EDT	Areal Flood Warning	PHI	Berks	3 hr
May 4, 10:53 AM EDT	Mesoscale Discussion	SPC	Bradford, Cameron, Centre, Clearfield, Clinton, Columbia and 12 more	97 min
May 4, 10:56 AM EDT	Special Weather Statement	CTP	Elk	34 min
May 4, 12:49 PM EDT	Special Weather Statement	CTP	Centre, Lycoming	26 min
May 4, 1:04 PM EDT	Special Weather Statement	CTP	Clearfield	26 min
May 4, 1:18 PM EDT	Special Weather Statement	CTP	Columbia, Huntingdon, Juniata, Mifflin, Montour, Northumberland and 2 more	27 min
May 4, 1:24 PM EDT	Severe Thunderstorm Watch	SPC	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	6 hr
May 4, 1:46 PM EDT	Special Weather Statement	CTP	Clinton	44 min
May 4, 1:51 PM EDT	Special Weather Statement	CTP	Columbia, Mifflin, Montour, Northumberland, Snyder, Union	39 min
May 4, 1:52 PM EDT	Special Weather Statement	CTP	Columbia, Mifflin, Montour, Northumberland, Snyder, Union	38 min
May 4, 2:41 PM EDT	Special Weather Statement	CTP	Schuylkill	49 min
May 4, 3:03 PM EDT	Special Weather Statement	CTP	Mifflin	27 min
May 4, 3:37 PM EDT	Special Weather Statement	CTP	Juniata	38 min
May 4, 3:54 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	37 min
May 4, 4:04 PM EDT	Severe Thunderstorm Warning	PHI	Bucks	56 min
May 4, 4:24 PM EDT	Special Weather Statement	CTP	Lycoming	36 min
May 4, 4:44 PM EDT	Mesoscale Discussion	SPC	Lackawanna, Pike, Susquehanna, Wayne	2 hr
May 5, 7:09 PM EDT	Mesoscale Discussion	SPC	Crawford, Erie, Mercer	96 min
May 5, 8:50 PM EDT	Severe Thunderstorm Warning	CTP	Warren	55 min
May 5, 9:41 PM EDT	Special Weather Statement	CTP	Warren	49 min
May 5, 9:46 PM EDT	Severe Thunderstorm Warning	CTP	Elk, McKean, Warren	44 min
May 5, 10:57 PM EDT	Special Weather Statement	CTP	McKean	33 min
May 5, 11:35 PM EDT	Special Weather Statement	CTP	Tioga	55 min
May 6, 12:45 AM EDT	Special Weather Statement	CTP	McKean	60 min
May 6, 12:59 AM EDT	Special Weather Statement	CTP	Potter	31 min
May 6, 2:23 AM EDT	Special Weather Statement	CTP	Cameron, Elk, Potter	52 min
May 6, 2:59 AM EDT	Special Weather Statement	CTP	Clearfield	46 min
May 6, 4:04 AM EDT	Special Weather Statement	CTP	Clearfield	41 min
May 6, 4:53 AM EDT	Special Weather Statement	CTP	Cambria	37 min
May 7, 3:59 AM EDT	High Wind Watch	CTP	Cameron, Elk, McKean, Potter, Warren	12 hr
May 7, 4:18 AM EDT	High Wind Watch	CLE	Crawford, Erie	11 hr
May 7, 2:38 PM EDT	Wind Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Forest and 6 more	30 hr
May 7, 3:00 PM EDT	Wind Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	32 hr
May 7, 3:03 PM EDT	High Wind Warning	CLE	Crawford, Erie	29 hr
May 7, 3:41 PM EDT	Wind Advisory	CTP	Adams, Bedford, Blair, Cambria, Cameron, Centre and 27 more	31 hr
May 7, 7:25 PM EDT	Mesoscale Discussion	SPC	Allegheny, Beaver, Butler, Crawford, Lawrence, Mercer and 2 more	95 min
May 7, 9:17 PM EDT	Mesoscale Discussion	SPC	Beaver, Butler, Clarion, Crawford, Erie, Forest and 4 more	58 min
May 7, 9:31 PM EDT	Severe Thunderstorm Watch	SPC	Allegheny, Armstrong, Beaver, Butler, Cameron, Clarion and 16 more	5 hr
May 7, 10:03 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	57 min
May 7, 10:12 PM EDT	Severe Thunderstorm Warning	CLE	Crawford	78 min
May 7, 10:26 PM EDT	Special Weather Statement	CTP	Warren	49 min
May 7, 10:37 PM EDT	Severe Thunderstorm Warning	CLE	Erie	38 min
May 7, 10:46 PM EDT	Severe Thunderstorm Warning	CTP	McKean, Warren	59 min
May 7, 11:06 PM EDT	Severe Thunderstorm Warning	PBZ	Clarion, Forest, Mercer, Venango	54 min
May 7, 11:24 PM EDT	Areal Flood Advisory	PBZ	Mercer	4 hr
May 7, 11:29 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Lawrence, Mercer, Venango	46 min
May 7, 11:42 PM EDT	Mesoscale Discussion	SPC	Armstrong, Cameron, Centre, Clarion, Clearfield, Clinton and 12 more	63 min
May 7, 11:48 PM EDT	Special Weather Statement	CTP	Cameron, Elk, McKean, Potter	57 min
May 8, 12:08 AM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Forest, Venango	37 min
May 8, 12:32 AM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler, Lawrence	43 min
May 8, 12:43 AM EDT	Special Weather Statement	CTP	Cameron, Potter, Tioga	47 min
May 8, 1:35 AM EDT	Special Weather Statement	CTP	Cameron, Elk	40 min
May 8, 1:54 AM EDT	Special Weather Statement	CTP	Clearfield	36 min
May 8, 1:59 AM EDT	Special Weather Statement	CTP	Clinton, Lycoming, Sullivan	46 min
May 8, 2:10 AM EDT	Special Weather Statement	CTP	Centre	35 min
May 8, 2:22 AM EDT	Severe Thunderstorm Warning	PBZ	Indiana	23 min
May 8, 2:27 AM EDT	Special Weather Statement	CTP	Blair, Cambria	48 min
May 8, 2:36 AM EDT	Mesoscale Discussion	SPC	Blair, Cambria, Cameron, Centre, Clearfield, Clinton and 10 more	54 min
May 8, 2:40 AM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon	35 min
May 8, 3:06 AM EDT	Special Weather Statement	CTP	Cambria	9 min
May 8, 4:15 AM EDT	Wind Advisory	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	25 hr
May 8, 2:02 PM EDT	Red Flag Warning	PHI	Berks, Delaware, Philadelphia	6 hr
May 8, 2:24 PM EDT	Freeze Watch	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 17 more	14 hr
May 8, 3:01 PM EDT	Freeze Watch	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	20 hr
May 8, 3:04 PM EDT	Freeze Watch	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Forest and 6 more	12 hr
May 8, 3:48 PM EDT	Special Weather Statement	CTP	Centre, Clinton, Lycoming, Mifflin, Sullivan, Union	27 min
May 8, 3:50 PM EDT	Special Weather Statement	CTP	Cameron	25 min
May 8, 3:55 PM EDT	Freeze Watch	CLE	Crawford, Erie	23 hr
May 8, 3:55 PM EDT	Freeze Watch	PHI	Carbon, Monroe	13 hr
May 8, 7:59 PM EDT	Fire Weather Watch	PHI	Berks, Delaware, Lehigh, Northampton, Philadelphia	8 hr
May 9, 3:22 AM EDT	Freeze Warning	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Forest and 6 more	29 hr
May 9, 4:02 AM EDT	Red Flag Warning	PHI	Berks, Delaware, Lehigh, Northampton, Philadelphia	16 hr
May 9, 4:11 AM EDT	Freeze Warning	CTP	Bedford, Blair, Cambria, Cameron, Centre, Clearfield and 17 more	28 hr
May 9, 4:45 AM EDT	Freeze Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	27 hr
May 9, 11:10 AM EDT	Freeze Warning	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	21 hr
May 9, 12:48 PM EDT	Frost Advisory	CTP	Adams, Cumberland, Dauphin, Franklin, Fulton, Juniata and 4 more	19 hr
May 9, 2:13 PM EDT	Freeze Watch	CTP	Cameron, Clinton, Elk, Lycoming, McKean, Potter and 3 more	25 hr
May 9, 2:33 PM EDT	Freeze Warning	CLE	Crawford, Erie	17 hr
May 9, 2:41 PM EDT	Freeze Watch	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	21 hr
May 9, 2:46 PM EDT	Fire Weather Watch	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	14 hr
May 9, 3:47 PM EDT	Freeze Watch	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	23 hr
May 9, 3:57 PM EDT	Fire Weather Watch	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	12 hr
May 10, 4:17 AM EDT	Red Flag Warning	PHI	Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more	16 hr
May 10, 4:20 AM EDT	Red Flag Warning	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	14 hr
May 10, 11:37 AM EDT	Freeze Warning	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	20 hr
May 10, 2:32 PM EDT	Frost Advisory	PHI	Delaware	17 hr
May 10, 2:32 PM EDT	Freeze Warning	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	17 hr
May 10, 2:50 PM EDT	Freeze Warning	CTP	Cameron, Clinton, Columbia, Elk, Lycoming, McKean and 9 more	17 hr
May 10, 2:51 PM EDT	Frost Advisory	CLE	Crawford, Erie	13 hr
May 10, 3:28 PM EDT	Freeze Warning	PBZ	Clarion, Forest, Jefferson, Venango	14 hr
May 12, 2:43 PM EDT	Frost Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	17 hr
May 13, 1:18 AM EDT	Dense Fog Advisory	BGM	Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more	9 hr
May 13, 7:59 PM EDT	Severe Thunderstorm Warning	CLE	Erie	61 min
May 13, 8:30 PM EDT	Mesoscale Discussion	SPC	Elk, Erie, McKean, Warren	90 min
May 14, 12:11 AM EDT	Special Weather Statement	CTP	Elk	49 min
May 14, 1:48 AM EDT	Mesoscale Discussion	SPC	Lawrence	87 min
May 14, 3:33 AM EDT	Special Weather Statement	CTP	Warren	27 min
May 14, 3:48 AM EDT	Mesoscale Discussion	SPC	Armstrong, Butler, Clarion, Lawrence, Mercer, Venango	87 min
May 14, 4:14 AM EDT	Severe Thunderstorm Warning	PBZ	Butler, Clarion, Forest, Lawrence, Mercer, Venango	61 min
May 14, 4:40 AM EDT	Severe Thunderstorm Warning	CLE	Crawford	65 min
May 14, 5:14 AM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Forest, Indiana, Jefferson and 3 more	61 min
May 14, 5:47 AM EDT	Special Weather Statement	CTP	Cameron, Clearfield, Elk	28 min
May 14, 6:04 AM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clearfield, Elk	41 min
May 14, 6:35 AM EDT	Special Weather Statement	CTP	Clinton	25 min
May 14, 9:00 AM EDT	Special Weather Statement	CTP	Bedford	45 min
May 14, 11:50 AM EDT	Special Weather Statement	CTP	Bedford, Franklin	25 min
May 14, 11:56 AM EDT	Mesoscale Discussion	SPC	Adams, Bedford, Blair, Cambria, Centre, Cumberland and 11 more	2 hr
May 14, 12:52 PM EDT	Special Weather Statement	CTP	Cumberland	23 min
May 14, 1:10 PM EDT	Special Weather Statement	CTP	Franklin	35 min
May 14, 1:58 PM EDT	Special Weather Statement	CTP	Columbia, Montour, Union	32 min
May 14, 2:29 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Allegheny, Bedford, Blair, Cambria, Columbia and 21 more	7 hr
May 14, 2:59 PM EDT	Special Weather Statement	CTP	Blair, Cambria, Huntingdon	46 min
May 14, 3:04 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Huntingdon	41 min
May 14, 3:12 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Westmoreland	33 min
May 14, 3:19 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon	41 min
May 14, 3:32 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria, Huntingdon, Somerset	58 min
May 14, 3:43 PM EDT	Severe Thunderstorm Watch	SPC	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 3 more	6 hr
May 14, 3:52 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Fayette, Washington, Westmoreland	53 min
May 14, 3:52 PM EDT	Special Weather Statement	PHI	Carbon, Monroe	53 min
May 14, 3:55 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Huntingdon, Juniata, Mifflin, Perry	50 min
May 14, 4:18 PM EDT	Special Weather Statement	PHI	Carbon	57 min
May 14, 4:20 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Huntingdon, Juniata, Perry	70 min
May 14, 4:24 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Perry, Schuylkill	57 min
May 14, 4:26 PM EDT	Special Weather Statement	PHI	Carbon, Northampton	64 min
May 14, 4:35 PM EDT	Special Weather Statement	CTP	Somerset	25 min
May 14, 4:40 PM EDT	Special Weather Statement	CTP	Fulton	35 min
May 14, 4:42 PM EDT	Severe Thunderstorm Warning	PHI	Berks	63 min
May 14, 4:53 PM EDT	Special Weather Statement	CTP	Schuylkill	22 min
May 14, 4:58 PM EDT	Tornado Warning	CTP	Cumberland	32 min
May 14, 5:04 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Lehigh, Northampton	56 min
May 14, 5:05 PM EDT	Special Weather Statement	CTP	Bedford	25 min
May 14, 5:07 PM EDT	Special Weather Statement	PHI	Northampton	53 min
May 14, 5:15 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, York	45 min
May 14, 5:28 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Franklin	31 min
May 14, 5:30 PM EDT	Special Weather Statement	CTP	Fulton	30 min
May 14, 5:36 PM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, York	3 hr
May 14, 5:38 PM EDT	Tornado Warning	PHI	Berks, Lehigh	37 min
May 14, 5:41 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, York	64 min
May 14, 5:49 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Montgomery	56 min
May 14, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Northampton	67 min
May 14, 6:00 PM EDT	Special Weather Statement	CTP	Adams	30 min
May 14, 6:00 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	75 min
May 14, 6:09 PM EDT	Special Weather Statement	CTP	Franklin	36 min
May 14, 6:11 PM EDT	Special Weather Statement	PHI	Carbon	64 min
May 14, 6:12 PM EDT	Special Weather Statement	CTP	Somerset	33 min
May 14, 6:24 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	51 min
May 14, 6:25 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Chester, Montgomery, Philadelphia	65 min
May 14, 6:35 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	55 min
May 14, 6:35 PM EDT	Mesoscale Discussion	SPC	Adams, Berks, Bucks, Chester, Cumberland, Delaware and 6 more	55 min
May 14, 6:55 PM EDT	Special Weather Statement	CTP	Adams	35 min
May 14, 7:16 PM EDT	Special Weather Statement	CTP	York	29 min
May 14, 7:26 PM EDT	Areal Flood Advisory	CTP	Lancaster	2 hr
May 14, 7:28 PM EDT	Severe Thunderstorm Warning	PBZ	Fayette, Greene	32 min
May 14, 7:42 PM EDT	Special Weather Statement	CTP	Blair	33 min
May 14, 8:01 PM EDT	Special Weather Statement	CTP	Centre	29 min
May 14, 8:12 PM EDT	Severe Thunderstorm Warning	CTP	Centre	23 min
May 14, 8:27 PM EDT	Special Weather Statement	CTP	Blair	33 min
May 23, 2:01 AM EDT	Areal Flood Advisory	CTP	Adams, Cumberland, Dauphin, Franklin, Perry, York	4 hr
May 23, 2:11 AM EDT	Dense Fog Advisory	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Forest and 6 more	7 hr
May 23, 4:39 AM EDT	Flash Flood Warning	CTP	Adams, Cumberland, Franklin, Huntingdon, Perry	4 hr
May 23, 7:35 AM EDT	Areal Flood Advisory	CTP	Huntingdon, Juniata	3 hr
May 23, 8:31 AM EDT	Flash Flood Warning	CTP	Adams, Cumberland, Franklin, Huntingdon, Perry	4 hr
May 23, 12:36 PM EDT	Areal Flood Advisory	CTP	Franklin	3 hr
May 23, 12:56 PM EDT	Areal Flood Warning	CTP	Huntingdon	6 hr
May 23, 4:56 PM EDT	Areal Flood Advisory	CTP	Franklin	4 hr
May 23, 9:06 PM EDT	Areal Flood Advisory	CTP	Franklin, Fulton, Huntingdon	6 hr
May 27, 11:28 AM EDT	Mesoscale Discussion	SPC	Adams, Berks, Bradford, Bucks, Carbon, Centre and 32 more	92 min
May 27, 1:23 PM EDT	Severe Thunderstorm Watch	SPC	Adams, Berks, Bradford, Bucks, Carbon, Chester and 29 more	8 hr
May 27, 1:37 PM EDT	Special Weather Statement	CTP	Adams	38 min
May 27, 2:00 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Monroe, Northampton	60 min
May 27, 2:30 PM EDT	Flash Flood Warning	PHI	Northampton	33 min
May 27, 2:45 PM EDT	Special Weather Statement	PHI	Chester	60 min
May 27, 3:02 PM EDT	Special Weather Statement	CTP	Clinton	58 min
May 27, 3:19 PM EDT	Severe Thunderstorm Warning	PHI	Bucks, Northampton	41 min
May 27, 3:30 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	45 min
May 27, 3:39 PM EDT	Special Weather Statement	CTP	Union	51 min
May 27, 4:13 PM EDT	Mesoscale Discussion	SPC	Adams, Berks, Bradford, Bucks, Carbon, Chester and 25 more	62 min
May 27, 4:16 PM EDT	Severe Thunderstorm Warning	BGM	Susquehanna, Wayne	45 min
May 27, 4:40 PM EDT	Special Weather Statement	CTP	Schuylkill	50 min
May 27, 4:53 PM EDT	Special Weather Statement	PHI	Bucks, Montgomery	52 min
May 27, 5:07 PM EDT	Special Weather Statement	CTP	Carbon	38 min
May 27, 5:09 PM EDT	Special Weather Statement	BGM	Pike	51 min
May 27, 5:11 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Carbon, Lehigh, Northampton	64 min
May 27, 5:20 PM EDT	Special Weather Statement	CTP	Schuylkill	55 min
May 27, 5:36 PM EDT	Severe Thunderstorm Warning	PHI	Monroe, Northampton	54 min
May 27, 5:44 PM EDT	Special Weather Statement	PHI	Delaware, Montgomery	61 min
May 27, 5:53 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	37 min
May 27, 6:05 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Lehigh, Montgomery	25 min
May 27, 6:20 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Lehigh, Montgomery	55 min
May 27, 6:35 PM EDT	Special Weather Statement	PHI	Northampton	55 min
May 27, 7:12 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Chester, Delaware, Montgomery	48 min
May 27, 7:25 PM EDT	Special Weather Statement	PHI	Montgomery	65 min
May 27, 7:28 PM EDT	Special Weather Statement	CTP	Schuylkill	32 min
May 27, 7:40 PM EDT	Special Weather Statement	PHI	Bucks	65 min
May 27, 7:44 PM EDT	Areal Flood Advisory	PHI	Berks, Chester, Montgomery	3 hr
May 27, 7:56 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware	34 min
May 27, 8:08 PM EDT	Mesoscale Discussion	SPC	Adams, Berks, Bucks, Carbon, Chester, Columbia and 15 more	97 min
May 27, 9:03 PM EDT	Special Weather Statement	PHI	Berks, Montgomery	57 min
May 27, 9:24 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	36 min
May 27, 9:55 PM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	118 min
May 27, 9:59 PM EDT	Special Weather Statement	CTP	York	31 min
May 27, 10:03 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	27 min
May 27, 10:13 PM EDT	Severe Thunderstorm Warning	PHI	Chester	47 min
May 27, 10:29 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	46 min
May 27, 10:30 PM EDT	Severe Thunderstorm Warning	PHI	Chester	60 min
May 27, 10:34 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	26 min
May 27, 11:05 PM EDT	Flash Flood Warning	CTP	Adams, York	3 hr
May 27, 11:12 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	63 min
May 27, 11:24 PM EDT	Special Weather Statement	CTP	Adams	51 min
May 27, 11:46 PM EDT	Coastal Flood Advisory	PHI	Delaware, Philadelphia	4 hr
May 27, 11:54 PM EDT	Special Weather Statement	CTP	Lancaster	66 min
May 28, 1:14 AM EDT	Special Weather Statement	PHI	Berks	61 min
May 28, 7:16 AM EDT	Special Weather Statement	CTP	Warren	29 min
May 28, 7:59 AM EDT	Special Weather Statement	PBZ	Venango	61 min
May 28, 12:23 PM EDT	Special Weather Statement	CTP	Clearfield	37 min
May 28, 12:44 PM EDT	Special Weather Statement	CTP	Cameron	31 min
May 28, 12:51 PM EDT	Special Weather Statement	CTP	Blair	24 min
May 28, 12:56 PM EDT	Special Weather Statement	CTP	Clearfield	34 min
May 28, 1:04 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	41 min
May 28, 1:14 PM EDT	Areal Flood Advisory	CTP	Centre, Clearfield	3 hr
May 28, 1:22 PM EDT	Special Weather Statement	CTP	Cambria	23 min
May 28, 1:27 PM EDT	Areal Flood Advisory	CTP	Bedford, Blair, Cambria	3 hr
May 28, 1:43 PM EDT	Flash Flood Warning	CTP	Bedford, Blair, Cambria	3 hr
May 28, 1:49 PM EDT	Special Weather Statement	CTP	Cambria	26 min
May 28, 1:53 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	37 min
May 28, 1:57 PM EDT	Special Weather Statement	CTP	Cameron	33 min
May 28, 2:25 PM EDT	Special Weather Statement	CTP	Bedford	50 min
May 28, 2:28 PM EDT	Special Weather Statement	CTP	Cameron	47 min
May 28, 2:32 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	43 min
May 28, 2:47 PM EDT	Flash Flood Warning	CTP	Bedford	3 hr
May 28, 2:51 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	39 min
May 28, 3:20 PM EDT	Special Weather Statement	PBZ	Indiana	55 min
May 28, 3:22 PM EDT	Areal Flood Advisory	CTP	Cambria, Clearfield	3 hr
May 28, 3:28 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Somerset	62 min
May 28, 3:50 PM EDT	Special Weather Statement	PBZ	Jefferson	40 min
May 28, 4:22 PM EDT	Special Weather Statement	PBZ	Indiana	38 min
May 28, 4:50 PM EDT	Special Weather Statement	PBZ	Lawrence, Mercer	25 min
May 28, 5:17 PM EDT	Special Weather Statement	PBZ	Lawrence	43 min
May 28, 5:34 PM EDT	Special Weather Statement	PBZ	Allegheny	41 min
May 28, 6:11 PM EDT	Special Weather Statement	PBZ	Beaver, Washington	64 min
May 28, 6:22 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Washington	38 min
May 29, 12:55 AM EDT	Areal Flood Advisory	CTP	Potter	59 min
May 29, 3:54 PM EDT	Mesoscale Discussion	SPC	Berks, Carbon, Columbia, Lackawanna, Lebanon, Lehigh and 11 more	96 min
May 29, 10:03 PM EDT	Special Weather Statement	PHI	Bucks, Lehigh	57 min
May 31, 1:14 PM EDT	Flash Flood Watch	CTP	Bedford, Blair, Cambria, Clearfield, Elk, Franklin and 5 more	14 hr
May 31, 1:18 PM EDT	Special Weather Statement	PBZ	Beaver	42 min
May 31, 1:29 PM EDT	Special Weather Statement	PBZ	Forest, Mercer, Venango	46 min
May 31, 1:33 PM EDT	Severe Thunderstorm Warning	PBZ	Allegheny, Beaver, Butler	27 min
May 31, 1:45 PM EDT	Special Weather Statement	CTP	McKean, Warren	60 min
May 31, 2:04 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Erie	43 min
May 31, 2:06 PM EDT	Severe Thunderstorm Warning	CTP	McKean	54 min
May 31, 2:06 PM EDT	Special Weather Statement	PBZ	Mercer	54 min
May 31, 2:12 PM EDT	Flash Flood Warning	CLE	Crawford, Erie	6 hr
May 31, 2:14 PM EDT	Special Weather Statement	CTP	Somerset	61 min
May 31, 2:16 PM EDT	Severe Thunderstorm Warning	PBZ	Mercer, Venango	44 min
May 31, 2:18 PM EDT	Special Weather Statement	CTP	Cumberland	57 min
May 31, 2:23 PM EDT	Special Weather Statement	PBZ	Allegheny	52 min
May 31, 2:31 PM EDT	Severe Thunderstorm Warning	CTP	Warren	59 min
May 31, 2:33 PM EDT	Severe Thunderstorm Warning	PBZ	Butler, Clarion, Mercer, Venango	57 min
May 31, 2:52 PM EDT	Severe Thunderstorm Warning	PBZ	Forest, Venango	53 min
May 31, 2:54 PM EDT	Severe Thunderstorm Warning	CTP	Somerset	66 min
May 31, 2:59 PM EDT	Special Weather Statement	CTP	Lancaster	46 min
May 31, 3:02 PM EDT	Special Weather Statement	PHI	Chester	43 min
May 31, 3:07 PM EDT	Severe Thunderstorm Warning	CTP	Warren	53 min
May 31, 3:08 PM EDT	Flash Flood Watch	CLE	Crawford, Erie	14 hr
May 31, 3:18 PM EDT	Flash Flood Warning	CTP	McKean, Potter, Warren	3 hr
May 31, 3:20 PM EDT	Flash Flood Watch	PBZ	Allegheny, Armstrong, Beaver, Butler, Clarion, Forest and 4 more	12 hr
May 31, 3:21 PM EDT	Special Weather Statement	PBZ	Forest	54 min
May 31, 3:30 PM EDT	Special Weather Statement	PHI	Montgomery	45 min
May 31, 3:43 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Cambria	62 min
May 31, 3:54 PM EDT	Special Weather Statement	PBZ	Indiana	51 min
May 31, 4:07 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	53 min
May 31, 4:11 PM EDT	Severe Thunderstorm Warning	CTP	Cambria	64 min
May 31, 4:16 PM EDT	Special Weather Statement	CTP	Potter	89 min
May 31, 4:17 PM EDT	Special Weather Statement	PBZ	Forest	43 min
May 31, 4:35 PM EDT	Areal Flood Advisory	CTP	Lancaster, York	3 hr
May 31, 4:39 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	66 min
May 31, 4:42 PM EDT	Severe Thunderstorm Warning	CTP	Cambria, Centre, Clearfield	63 min
May 31, 4:47 PM EDT	Areal Flood Advisory	CTP	Lancaster	3 hr
May 31, 4:48 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Elk, McKean, Potter	57 min
May 31, 4:55 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Huntingdon	65 min
May 31, 4:58 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster	62 min
May 31, 5:00 PM EDT	Special Weather Statement	PBZ	Indiana	45 min
May 31, 5:02 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	58 min
May 31, 5:10 PM EDT	Severe Thunderstorm Warning	PBZ	Indiana, Jefferson	50 min
May 31, 5:11 PM EDT	Flash Flood Warning	CTP	Lancaster, York	3 hr
May 31, 5:15 PM EDT	Special Weather Statement	PBZ	Westmoreland	60 min
May 31, 5:21 PM EDT	Special Weather Statement	CTP	Lebanon	24 min
May 31, 5:21 PM EDT	Special Weather Statement	PBZ	Allegheny	54 min
May 31, 5:23 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Clinton, Potter	52 min
May 31, 5:24 PM EDT	Special Weather Statement	CTP	York	36 min
May 31, 5:44 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	61 min
May 31, 5:48 PM EDT	Flash Flood Warning	CTP	Lancaster, York	3 hr
May 31, 5:54 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clearfield, Clinton, Potter	66 min
May 31, 5:59 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	76 min
May 31, 6:01 PM EDT	Special Weather Statement	CTP	York	29 min
May 31, 6:19 PM EDT	Special Weather Statement	PBZ	Beaver	56 min
May 31, 6:30 PM EDT	Special Weather Statement	PBZ	Allegheny	60 min
May 31, 6:46 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	59 min
May 31, 6:58 PM EDT	Special Weather Statement	CTP	York	32 min
May 31, 6:58 PM EDT	Special Weather Statement	PBZ	Butler	62 min
May 31, 6:59 PM EDT	Special Weather Statement	PBZ	Butler	61 min
May 31, 7:12 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, York	63 min
May 31, 7:28 PM EDT	Special Weather Statement	PBZ	Mercer	62 min
May 31, 7:55 PM EDT	Areal Flood Advisory	PBZ	Allegheny	3 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	94
Tornado Warning	2
Severe Thunderstorm Watch	6
Mesoscale Discussion	18
Special Weather Statement	134
Flooding
Areal Flood Warning	3
Flash Flood Warning	11
River Flood Warning	1
Flash Flood Watch	4
Areal Flood Advisory	24
Cold
Freeze Warning	9
Freeze Watch	8
Frost Advisory	4
Wind and dust
High Wind Warning	1
High Wind Watch	2
Wind Advisory	4
Fire
Red Flag Warning	4
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	2
Coast and beach
Coastal Flood Advisory	1

By county

Every county with at least one alert. A county page lists each alert that covered it.

27 more counties

Nearby

Alerts in force now Tornadoes on record The radar archive 2009 2011

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.