Alert archive / New York / Severe Thunderstorm Warnings

Severe Thunderstorm Warnings in New York, 2010

365 severe thunderstorm warnings in 2010. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of severe thunderstorm warnings reaches back to 1986.

Severe Thunderstorm Warnings by county

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

Severe Thunderstorm Warnings: 365
Busiest month: July157 severe thunderstorm warnings
Busiest day: July 21, 201060 severe thunderstorm warnings

Over time

By month

Warning verification

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

239 of 365 severe thunderstorm warnings covering New York in 2010 had a qualifying storm report inside them; 439 of 580 hail, wind and damage reports fell inside a warning, on average 23 minutes after it went out.

New York, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Severe thunderstorm warnings	365	239	35%	580	76%	23 min

Each office's whole area, 2010

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Binghamton, NY: severe thunderstorm warnings	137	91	34%	214	81%	24 min
NWS Burlington, VT: severe thunderstorm warnings	46	28	39%	130	88%	28 min
NWS Buffalo, NY: severe thunderstorm warnings	59	36	39%	97	71%	26 min
NWS Albany, NY: severe thunderstorm warnings	102	69	32%	217	87%	24 min
NWS New York, NY: severe thunderstorm warnings	101	66	35%	244	64%	22 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	Counties	Lasted
Apr 6, 3:10 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie, Wyoming	51 min
Apr 7, 9:43 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	47 min
Apr 8, 7:10 PM EDT	Severe Thunderstorm Warning	BGM	Broome	65 min
Apr 8, 7:30 PM EDT	Severe Thunderstorm Warning	ALY	Herkimer	45 min
Apr 8, 7:40 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Delaware, Tioga	65 min
Apr 8, 8:08 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Delaware, Otsego, Sullivan	52 min
Apr 8, 8:57 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Otsego, Sullivan	63 min
Apr 8, 11:20 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Rockland	40 min
Apr 8, 11:58 PM EDT	Severe Thunderstorm Warning	OKX	Orange	17 min
Apr 22, 5:55 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	30 min
May 4, 12:43 PM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida, Onondaga	62 min
May 4, 12:47 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Cortland, Madison, Onondaga	58 min
May 4, 1:06 PM EDT	Severe Thunderstorm Warning	ALY	Herkimer	54 min
May 4, 1:08 PM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida, Otsego	67 min
May 4, 1:18 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Cortland, Tioga, Tompkins	42 min
May 4, 1:32 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Herkimer, Montgomery	58 min
May 4, 1:59 PM EDT	Severe Thunderstorm Warning	ALY	Schoharie	50 min
May 4, 2:22 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Montgomery, Rensselaer, Saratoga, Schenectady, Washington	53 min
May 4, 2:44 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Columbia, Greene, Rensselaer, Schoharie, Ulster	61 min
May 4, 3:12 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer, Washington	63 min
May 4, 3:22 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Rensselaer	53 min
May 4, 3:58 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Dutchess, Ulster	53 min
May 4, 4:07 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Madison, Oneida, Onondaga, Otsego	53 min
May 4, 6:00 PM EDT	Severe Thunderstorm Warning	BTV	Essex	45 min
May 5, 8:28 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Wyoming	47 min
May 6, 11:56 AM EDT	Severe Thunderstorm Warning	BTV	Clinton	34 min
May 7, 10:21 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie, Wyoming	54 min
May 7, 10:44 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans	61 min
May 8, 6:13 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer, Saratoga, Warren, Washington	62 min
May 8, 6:38 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer	49 min
May 26, 7:23 PM EDT	Severe Thunderstorm Warning	BTV	Clinton	52 min
May 26, 8:10 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex	65 min
May 26, 8:43 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Oswego	28 min
May 26, 8:44 PM EDT	Severe Thunderstorm Warning	BTV	Essex	61 min
May 26, 9:09 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	66 min
May 26, 9:37 PM EDT	Severe Thunderstorm Warning	BTV	Essex	53 min
May 26, 9:45 PM EDT	Severe Thunderstorm Warning	ALY	Warren, Washington	60 min
May 26, 10:37 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer, Washington	53 min
May 26, 11:08 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer, Washington	67 min
May 26, 11:14 PM EDT	Severe Thunderstorm Warning	ALY	Saratoga, Warren, Washington	61 min
May 26, 11:25 PM EDT	Severe Thunderstorm Warning	ALY	Columbia	65 min
May 26, 11:28 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Columbia, Rensselaer	62 min
May 26, 11:36 PM EDT	Severe Thunderstorm Warning	ALY	Saratoga	39 min
May 27, 12:14 AM EDT	Severe Thunderstorm Warning	OKX	Suffolk	33 min
May 27, 1:39 AM EDT	Severe Thunderstorm Warning	OKX	Suffolk	40 min
May 27, 2:02 AM EDT	Severe Thunderstorm Warning	OKX	Suffolk	18 min
May 27, 3:30 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Delaware	45 min
May 27, 4:16 PM EDT	Severe Thunderstorm Warning	BGM	Delaware	45 min
May 27, 5:43 PM EDT	Severe Thunderstorm Warning	OKX	Orange	32 min
May 29, 5:15 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess	52 min
May 29, 5:16 PM EDT	Severe Thunderstorm Warning	OKX	Putnam	44 min
May 31, 3:46 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	59 min
May 31, 6:10 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	48 min
Jun 1, 1:41 AM EDT	Severe Thunderstorm Warning	BGM	Broome, Chemung, Chenango, Cortland, Tioga, Tompkins	64 min
Jun 5, 1:25 PM EDT	Severe Thunderstorm Warning	ALY	Montgomery, Saratoga, Schenectady	50 min
Jun 5, 1:58 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer, Washington	62 min
Jun 5, 2:45 PM EDT	Severe Thunderstorm Warning	ALY	Columbia	53 min
Jun 5, 3:44 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Montgomery, Schenectady, Schoharie	46 min
Jun 6, 2:37 AM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	53 min
Jun 6, 4:03 AM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston	57 min
Jun 6, 8:12 AM EDT	Severe Thunderstorm Warning	BGM	Chemung, Steuben	33 min
Jun 6, 8:41 AM EDT	Severe Thunderstorm Warning	BGM	Chemung, Steuben, Tioga	49 min
Jun 6, 9:41 AM EDT	Severe Thunderstorm Warning	BGM	Chemung, Tioga	34 min
Jun 6, 10:46 AM EDT	Severe Thunderstorm Warning	BGM	Delaware, Otsego	29 min
Jun 6, 10:50 AM EDT	Severe Thunderstorm Warning	BGM	Broome, Tioga	40 min
Jun 6, 10:53 AM EDT	Severe Thunderstorm Warning	ALY	Montgomery, Schenectady, Schoharie	37 min
Jun 6, 11:27 AM EDT	Severe Thunderstorm Warning	ALY	Albany, Columbia, Greene, Rensselaer, Saratoga, Schenectady and 1 more	63 min
Jun 6, 12:27 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Greene, Rensselaer	63 min
Jun 6, 12:30 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer	60 min
Jun 6, 1:11 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Otsego	34 min
Jun 6, 1:18 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess, Ulster	57 min
Jun 6, 1:43 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Montgomery, Schenectady, Schoharie	47 min
Jun 6, 2:19 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess	56 min
Jun 6, 2:39 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Rensselaer	51 min
Jun 6, 2:46 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam, Rockland, Westchester	44 min
Jun 10, 1:54 PM EDT	Severe Thunderstorm Warning	ALY	Warren, Washington	54 min
Jun 10, 2:26 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Dutchess	64 min
Jun 16, 5:06 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	39 min
Jun 20, 4:39 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	19 min
Jun 23, 6:44 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Wyoming	61 min
Jun 24, 1:28 AM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	62 min
Jun 24, 12:58 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Chenango, Cortland, Tompkins	47 min
Jun 24, 1:30 PM EDT	Severe Thunderstorm Warning	OKX	Putnam, Westchester	45 min
Jun 24, 1:32 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess	58 min
Jun 24, 1:44 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Cortland, Delaware, Otsego	46 min
Jun 24, 1:47 PM EDT	Severe Thunderstorm Warning	OKX	Rockland	28 min
Jun 24, 1:59 PM EDT	Severe Thunderstorm Warning	OKX	Westchester	46 min
Jun 24, 2:10 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer	65 min
Jun 24, 2:12 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Kings, New York, Queens, Rockland, Westchester	33 min
Jun 24, 2:27 PM EDT	Severe Thunderstorm Warning	BGM	Tioga	48 min
Jun 24, 2:27 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Queens, Suffolk	48 min
Jun 24, 2:33 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	42 min
Jun 24, 2:42 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Queens	14 min
Jun 24, 3:12 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	28 min
Jun 24, 3:37 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	38 min
Jun 24, 4:06 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Rensselaer, Schenectady, Schoharie	54 min
Jun 24, 4:09 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	37 min
Jun 27, 4:39 PM EDT	Severe Thunderstorm Warning	ALY	Columbia	66 min
Jun 27, 5:51 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	54 min
Jun 27, 7:10 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	20 min
Jun 27, 7:11 PM EDT	Severe Thunderstorm Warning	BGM	Steuben	49 min
Jun 27, 7:19 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	42 min
Jun 27, 8:00 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	25 min
Jun 27, 8:01 PM EDT	Severe Thunderstorm Warning	BGM	Chemung, Steuben	36 min
Jun 27, 10:58 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	62 min
Jun 27, 11:30 PM EDT	Severe Thunderstorm Warning	BGM	Chemung, Schuyler, Steuben	45 min
Jun 28, 3:51 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Herkimer, Montgomery	54 min
Jun 28, 4:11 PM EDT	Severe Thunderstorm Warning	ALY	Herkimer, Montgomery, Schoharie	64 min
Jun 28, 4:47 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Montgomery, Saratoga, Schenectady, Schoharie	36 min
Jun 28, 6:19 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Seneca	41 min
Jun 28, 6:32 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Seneca, Tompkins, Yates	43 min
Jun 28, 6:50 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Cortland, Onondaga, Seneca, Tompkins, Yates	40 min
Jun 28, 7:25 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Chenango, Cortland, Madison, Onondaga, Seneca and 1 more	65 min
Jun 28, 8:12 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	25 min
Jun 28, 8:15 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Otsego	45 min
Jun 28, 8:25 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chemung, Tioga	65 min
Jun 28, 8:28 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, St. Lawrence	61 min
Jun 28, 8:32 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	44 min
Jun 28, 8:48 PM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida, Onondaga	57 min
Jun 28, 8:56 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Otsego	53 min
Jun 28, 9:45 PM EDT	Severe Thunderstorm Warning	BGM	Oneida	45 min
Jun 28, 10:04 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Herkimer, Montgomery	56 min
Jul 9, 2:33 PM EDT	Severe Thunderstorm Warning	BTV	St. Lawrence	57 min
Jul 9, 4:10 PM EDT	Severe Thunderstorm Warning	BGM	Steuben, Yates	65 min
Jul 11, 5:24 PM EDT	Severe Thunderstorm Warning	ALY	Greene	66 min
Jul 12, 5:21 PM EDT	Severe Thunderstorm Warning	BGM	Chemung, Tioga	39 min
Jul 12, 6:02 PM EDT	Severe Thunderstorm Warning	BGM	Chemung, Tioga	43 min
Jul 12, 6:17 PM EDT	Severe Thunderstorm Warning	BGM	Cortland, Tioga, Tompkins	43 min
Jul 12, 6:44 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland	46 min
Jul 17, 1:19 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Onondaga, Seneca	56 min
Jul 17, 2:18 PM EDT	Severe Thunderstorm Warning	BGM	Cortland, Madison, Onondaga	57 min
Jul 17, 2:59 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	46 min
Jul 17, 3:07 PM EDT	Severe Thunderstorm Warning	BGM	Madison, Onondaga	23 min
Jul 17, 3:16 PM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida, Onondaga	44 min
Jul 17, 3:18 PM EDT	Severe Thunderstorm Warning	BGM	Oneida	42 min
Jul 17, 3:22 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Otsego	53 min
Jul 17, 3:55 PM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida	65 min
Jul 17, 4:16 PM EDT	Severe Thunderstorm Warning	BGM	Delaware, Otsego	14 min
Jul 17, 4:17 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Greene, Schoharie	58 min
Jul 17, 5:09 PM EDT	Severe Thunderstorm Warning	BGM	Oneida	36 min
Jul 17, 5:55 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Dutchess	65 min
Jul 17, 6:14 PM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida	61 min
Jul 17, 6:18 PM EDT	Severe Thunderstorm Warning	BUF	Ontario	19 min
Jul 17, 6:36 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Herkimer, Montgomery	54 min
Jul 17, 6:39 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	51 min
Jul 17, 7:31 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Herkimer, Montgomery	59 min
Jul 17, 7:52 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	53 min
Jul 17, 8:11 PM EDT	Severe Thunderstorm Warning	BGM	Steuben	25 min
Jul 17, 8:19 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Rensselaer, Saratoga, Schenectady, Washington	41 min
Jul 17, 8:21 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Cortland, Madison, Oneida, Onondaga	54 min
Jul 17, 8:57 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer	63 min
Jul 17, 9:08 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Otsego, Tompkins	52 min
Jul 17, 9:15 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Madison, Otsego	60 min
Jul 17, 9:59 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Madison, Otsego	46 min
Jul 17, 10:02 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Cortland, Delaware, Otsego	58 min
Jul 17, 10:03 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Montgomery, Schenectady, Schoharie	57 min
Jul 17, 10:15 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Greene, Schoharie	60 min
Jul 17, 10:30 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Rensselaer, Saratoga, Schenectady	45 min
Jul 17, 10:40 PM EDT	Severe Thunderstorm Warning	BGM	Delaware	50 min
Jul 17, 11:16 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Columbia, Dutchess, Greene, Rensselaer, Ulster	59 min
Jul 17, 11:54 PM EDT	Severe Thunderstorm Warning	BGM	Delaware, Otsego	51 min
Jul 18, 1:07 AM EDT	Severe Thunderstorm Warning	ALY	Albany, Columbia, Dutchess, Greene, Rensselaer, Ulster	53 min
Jul 19, 8:11 AM EDT	Severe Thunderstorm Warning	OKX	Orange, Rockland	34 min
Jul 19, 8:29 AM EDT	Severe Thunderstorm Warning	OKX	Putnam, Westchester	46 min
Jul 19, 11:36 AM EDT	Severe Thunderstorm Warning	OKX	Suffolk	39 min
Jul 19, 3:09 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam	51 min
Jul 19, 3:19 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess, Ulster	56 min
Jul 19, 3:58 PM EDT	Severe Thunderstorm Warning	BTV	Essex, Franklin	47 min
Jul 19, 4:10 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam	50 min
Jul 19, 4:18 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer	30 min
Jul 19, 4:41 PM EDT	Severe Thunderstorm Warning	OKX	Putnam	64 min
Jul 19, 4:52 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam, Rockland, Westchester	53 min
Jul 19, 6:03 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, New York, Orange, Rockland, Westchester	57 min
Jul 19, 7:21 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Suffolk, Westchester	39 min
Jul 19, 7:48 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	29 min
Jul 21, 8:39 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Wyoming	21 min
Jul 21, 11:41 AM EDT	Severe Thunderstorm Warning	BUF	Wayne	64 min
Jul 21, 11:56 AM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Schuyler, Seneca, Tompkins, Yates	64 min
Jul 21, 12:14 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Onondaga, Seneca	61 min
Jul 21, 12:34 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Tioga, Tompkins	56 min
Jul 21, 12:52 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Franklin, St. Lawrence	53 min
Jul 21, 1:05 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Delaware	40 min
Jul 21, 1:10 PM EDT	Severe Thunderstorm Warning	BGM	Cortland, Madison, Onondaga	50 min
Jul 21, 1:24 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer, Saratoga, Washington	66 min
Jul 21, 1:25 PM EDT	Severe Thunderstorm Warning	BUF	Monroe, Ontario, Wayne	52 min
Jul 21, 1:28 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Delaware, Otsego	62 min
Jul 21, 1:42 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	48 min
Jul 21, 1:51 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	39 min
Jul 21, 1:53 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Madison	34 min
Jul 21, 1:57 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Seneca	48 min
Jul 21, 1:59 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	61 min
Jul 21, 2:06 PM EDT	Severe Thunderstorm Warning	BGM	Delaware, Sullivan	54 min
Jul 21, 2:06 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, St. Lawrence	54 min
Jul 21, 2:20 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Dutchess	55 min
Jul 21, 2:30 PM EDT	Severe Thunderstorm Warning	BGM	Delaware, Sullivan	45 min
Jul 21, 2:31 PM EDT	Severe Thunderstorm Warning	BTV	Essex	59 min
Jul 21, 2:37 PM EDT	Severe Thunderstorm Warning	ALY	Greene, Ulster	53 min
Jul 21, 2:40 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Cortland, Seneca, Tompkins	50 min
Jul 21, 2:43 PM EDT	Severe Thunderstorm Warning	BGM	Delaware, Sullivan	50 min
Jul 21, 3:23 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	67 min
Jul 21, 3:28 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Tioga, Tompkins	47 min
Jul 21, 3:35 PM EDT	Severe Thunderstorm Warning	BTV	St. Lawrence	55 min
Jul 21, 3:37 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	38 min
Jul 21, 4:01 PM EDT	Severe Thunderstorm Warning	BTV	Franklin, St. Lawrence	59 min
Jul 21, 4:02 PM EDT	Severe Thunderstorm Warning	OKX	Orange	58 min
Jul 21, 4:10 PM EDT	Severe Thunderstorm Warning	BTV	St. Lawrence	44 min
Jul 21, 4:13 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Delaware, Otsego, Sullivan	62 min
Jul 21, 4:14 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	16 min
Jul 21, 4:20 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Tioga, Tompkins	55 min
Jul 21, 4:22 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam, Rockland, Westchester	53 min
Jul 21, 4:25 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	65 min
Jul 21, 4:27 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Dutchess, Ulster	46 min
Jul 21, 4:44 PM EDT	Severe Thunderstorm Warning	OKX	Orange	46 min
Jul 21, 4:49 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex, Franklin	56 min
Jul 21, 4:50 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess	55 min
Jul 21, 5:03 PM EDT	Severe Thunderstorm Warning	OKX	Putnam, Westchester	57 min
Jul 21, 5:04 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	29 min
Jul 21, 5:06 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Delaware, Sullivan	54 min
Jul 21, 5:12 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Monroe	63 min
Jul 21, 5:28 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam, Rockland, Westchester	62 min
Jul 21, 5:33 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	26 min
Jul 21, 6:03 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	27 min
Jul 21, 6:03 PM EDT	Severe Thunderstorm Warning	OKX	Putnam, Rockland, Westchester	57 min
Jul 21, 6:09 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Cortland, Tioga, Tompkins	41 min
Jul 21, 6:12 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	63 min
Jul 21, 6:19 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Herkimer, Warren	56 min
Jul 21, 6:34 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	41 min
Jul 21, 6:37 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Oswego	53 min
Jul 21, 6:42 PM EDT	Severe Thunderstorm Warning	BTV	Essex	63 min
Jul 21, 7:03 PM EDT	Severe Thunderstorm Warning	ALY	Warren, Washington	57 min
Jul 21, 7:06 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	24 min
Jul 21, 7:30 PM EDT	Severe Thunderstorm Warning	BUF	Lewis	14 min
Jul 21, 7:33 PM EDT	Severe Thunderstorm Warning	ALY	Hamilton, Herkimer	57 min
Jul 21, 7:35 PM EDT	Severe Thunderstorm Warning	BGM	Oneida	25 min
Jul 21, 7:38 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	52 min
Jul 21, 8:05 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	40 min
Jul 21, 8:11 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Herkimer, Montgomery, Schoharie	64 min
Jul 21, 8:12 PM EDT	Severe Thunderstorm Warning	OKX	Rockland, Westchester	33 min
Jul 21, 8:21 PM EDT	Severe Thunderstorm Warning	BGM	Oneida, Otsego	24 min
Jul 21, 8:31 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Saratoga, Warren	59 min
Jul 21, 9:14 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Montgomery, Schenectady, Schoharie	44 min
Jul 21, 9:34 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Rensselaer, Saratoga, Washington	56 min
Jul 23, 4:49 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Delaware, Sullivan	56 min
Jul 23, 6:49 PM EDT	Severe Thunderstorm Warning	OKX	Orange	56 min
Jul 23, 7:12 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	35 min
Jul 23, 7:24 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Rockland, Westchester	51 min
Jul 23, 8:44 PM EDT	Severe Thunderstorm Warning	OKX	Kings, New York, Queens	46 min
Jul 24, 3:41 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	64 min
Jul 24, 5:05 PM EDT	Severe Thunderstorm Warning	BUF	Chautauqua	55 min
Jul 24, 5:59 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	44 min
Jul 24, 6:23 PM EDT	Severe Thunderstorm Warning	BGM	Steuben	37 min
Jul 24, 6:43 PM EDT	Severe Thunderstorm Warning	BGM	Seneca, Yates	32 min
Jul 24, 6:59 PM EDT	Severe Thunderstorm Warning	BGM	Chemung, Steuben	46 min
Jul 24, 7:04 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Madison, Onondaga	41 min
Jul 24, 7:06 PM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Seneca, Tompkins, Yates	39 min
Jul 24, 8:48 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Otsego	42 min
Jul 24, 10:00 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	32 min
Jul 25, 12:22 AM EDT	Severe Thunderstorm Warning	OKX	Westchester	38 min
Jul 25, 2:46 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, New York, Rockland, Westchester	34 min
Jul 25, 3:01 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Nassau, Queens, Suffolk	44 min
Jul 25, 3:18 PM EDT	Severe Thunderstorm Warning	OKX	Suffolk	42 min
Jul 28, 5:04 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	56 min
Jul 28, 5:48 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	57 min
Jul 28, 6:02 PM EDT	Severe Thunderstorm Warning	BTV	St. Lawrence	58 min
Jul 28, 6:03 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	47 min
Jul 28, 6:26 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Orleans	31 min
Jul 28, 6:28 PM EDT	Severe Thunderstorm Warning	ALY	Hamilton, Herkimer	62 min
Jul 28, 7:07 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Livingston, Wyoming	53 min
Jul 28, 7:16 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	35 min
Jul 28, 7:30 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Livingston, Ontario, Wyoming	60 min
Jul 28, 7:57 PM EDT	Severe Thunderstorm Warning	BGM	Steuben, Yates	33 min
Jul 28, 8:02 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston	28 min
Jul 28, 8:08 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	30 min
Jul 28, 8:30 PM EDT	Severe Thunderstorm Warning	BGM	Seneca, Steuben, Yates	45 min
Jul 28, 9:25 PM EDT	Severe Thunderstorm Warning	BUF	Allegany	35 min
Jul 28, 9:32 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Cortland, Madison	43 min
Jul 28, 9:33 PM EDT	Severe Thunderstorm Warning	BGM	Oneida	27 min
Jul 28, 10:25 PM EDT	Severe Thunderstorm Warning	BTV	Essex	35 min
Jul 28, 10:29 PM EDT	Severe Thunderstorm Warning	ALY	Warren, Washington	48 min
Aug 2, 2:35 PM EDT	Severe Thunderstorm Warning	BTV	Clinton	55 min
Aug 2, 3:16 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex	59 min
Aug 2, 4:00 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex	46 min
Aug 3, 4:18 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Montgomery	38 min
Aug 3, 5:01 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Otsego	44 min
Aug 16, 12:43 AM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	47 min
Aug 16, 1:30 AM EDT	Severe Thunderstorm Warning	BUF	Genesee	29 min
Aug 16, 4:31 AM EDT	Severe Thunderstorm Warning	BUF	Livingston, Monroe, Ontario	44 min
Aug 16, 5:15 AM EDT	Severe Thunderstorm Warning	BUF	Ontario, Wayne	45 min
Aug 16, 5:19 AM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Seneca	26 min
Aug 16, 5:54 AM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Madison, Oneida, Onondaga	66 min
Aug 16, 6:18 AM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Madison, Onondaga, Seneca	42 min
Aug 16, 7:00 AM EDT	Severe Thunderstorm Warning	BGM	Cayuga, Chenango, Cortland, Madison, Oneida, Onondaga and 1 more	60 min
Aug 16, 7:30 AM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida, Onondaga	45 min
Aug 16, 7:49 AM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Herkimer, Montgomery	56 min
Aug 16, 7:52 AM EDT	Severe Thunderstorm Warning	BTV	Clinton	53 min
Aug 16, 8:49 AM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Montgomery, Saratoga, Schenectady, Warren	56 min
Aug 16, 11:55 AM EDT	Severe Thunderstorm Warning	BGM	Delaware, Otsego	50 min
Aug 16, 12:27 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Greene, Schoharie	63 min
Aug 16, 1:14 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Columbia, Greene, Rensselaer	61 min
Aug 16, 1:20 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	55 min
Aug 16, 2:04 PM EDT	Severe Thunderstorm Warning	ALY	Ulster	41 min
Aug 16, 2:06 PM EDT	Severe Thunderstorm Warning	OKX	Orange	39 min
Aug 16, 3:21 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess	54 min
Aug 16, 3:33 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	57 min
Aug 16, 4:23 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	67 min
Aug 16, 5:11 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Queens	28 min
Aug 16, 5:55 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Rockland, Westchester	38 min
Aug 16, 5:57 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Kings, New York, Queens, Richmond	38 min
Aug 16, 6:01 PM EDT	Severe Thunderstorm Warning	OKX	Orange	24 min
Aug 19, 5:08 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Niagara, Orleans	67 min
Aug 19, 5:24 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Montgomery, Schenectady, Schoharie	36 min
Aug 19, 6:01 PM EDT	Severe Thunderstorm Warning	ALY	Albany, Rensselaer, Schenectady	59 min
Aug 19, 6:51 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara	28 min
Sep 7, 5:44 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua, Erie	61 min
Sep 7, 8:35 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Livingston, Monroe, Orleans, Wyoming	42 min
Sep 8, 9:40 AM EDT	Severe Thunderstorm Warning	OKX	Suffolk	20 min
Sep 13, 1:16 PM EDT	Severe Thunderstorm Warning	BGM	Chemung, Schuyler, Tioga, Tompkins	44 min
Sep 13, 1:29 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Tioga	61 min
Sep 13, 1:39 PM EDT	Severe Thunderstorm Warning	BGM	Chenango, Delaware, Otsego	51 min
Sep 13, 1:44 PM EDT	Severe Thunderstorm Warning	BUF	Monroe	61 min
Sep 13, 1:58 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Tioga	32 min
Sep 13, 2:11 PM EDT	Severe Thunderstorm Warning	BGM	Delaware	64 min
Sep 13, 2:39 PM EDT	Severe Thunderstorm Warning	ALY	Ulster	66 min
Sep 13, 2:45 PM EDT	Severe Thunderstorm Warning	ALY	Warren, Washington	60 min
Sep 13, 3:10 PM EDT	Severe Thunderstorm Warning	ALY	Hamilton	65 min
Sep 13, 3:44 PM EDT	Severe Thunderstorm Warning	BGM	Sullivan	61 min
Sep 13, 4:09 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess, Ulster	51 min
Sep 13, 4:20 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam	40 min
Sep 13, 4:56 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess	34 min
Sep 16, 5:42 PM EDT	Severe Thunderstorm Warning	OKX	Kings, Nassau, Queens	33 min
Sep 16, 5:49 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Queens	41 min
Sep 16, 5:54 PM EDT	Severe Thunderstorm Warning	OKX	Nassau	31 min
Sep 16, 6:00 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Suffolk	45 min
Sep 22, 7:25 PM EDT	Severe Thunderstorm Warning	OKX	Orange, Putnam	50 min
Sep 22, 7:30 PM EDT	Severe Thunderstorm Warning	ALY	Dutchess	45 min
Sep 22, 7:58 PM EDT	Severe Thunderstorm Warning	OKX	Richmond	47 min
Sep 22, 8:44 PM EDT	Severe Thunderstorm Warning	OKX	Kings, Nassau, Queens	46 min
Sep 28, 9:46 AM EDT	Severe Thunderstorm Warning	BGM	Broome, Tioga	44 min
Sep 28, 10:24 AM EDT	Severe Thunderstorm Warning	BGM	Madison, Oneida, Onondaga	51 min
Sep 28, 11:08 AM EDT	Severe Thunderstorm Warning	BGM	Oneida	12 min
Sep 28, 1:16 PM EDT	Severe Thunderstorm Warning	BUF	Lewis, Oswego	44 min
Sep 28, 1:50 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	58 min
Sep 30, 3:14 PM EDT	Severe Thunderstorm Warning	BGM	Broome	46 min
Sep 30, 6:51 PM EDT	Severe Thunderstorm Warning	BGM	Broome, Chenango, Delaware, Otsego	54 min
Sep 30, 7:33 PM EDT	Severe Thunderstorm Warning	ALY	Hamilton, Herkimer	42 min
Sep 30, 7:58 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Herkimer	32 min
Sep 30, 8:16 PM EDT	Severe Thunderstorm Warning	ALY	Fulton, Hamilton, Montgomery	29 min
Sep 30, 9:13 PM EDT	Severe Thunderstorm Warning	BTV	Clinton, Essex	62 min
Oct 1, 9:26 AM EDT	Severe Thunderstorm Warning	OKX	Suffolk	49 min
Oct 11, 8:09 PM EDT	Severe Thunderstorm Warning	OKX	Bronx, Kings, New York, Queens	51 min
Oct 11, 8:54 PM EDT	Severe Thunderstorm Warning	OKX	Kings, Nassau, New York, Queens	36 min
Oct 11, 9:10 PM EDT	Severe Thunderstorm Warning	OKX	Nassau, Suffolk	35 min
Oct 26, 5:28 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Niagara	62 min
Oct 26, 6:05 PM EDT	Severe Thunderstorm Warning	BUF	Genesee, Orleans	41 min
Oct 26, 6:07 PM EDT	Severe Thunderstorm Warning	BUF	Cattaraugus, Chautauqua	68 min
Nov 17, 3:39 AM EST	Severe Thunderstorm Warning	OKX	Orange, Putnam, Rockland, Westchester	66 min
Nov 17, 3:44 AM EST	Severe Thunderstorm Warning	OKX	Bronx, Kings, Nassau, New York, Queens, Richmond and 2 more	61 min
Nov 17, 4:16 AM EST	Severe Thunderstorm Warning	ALY	Ulster	44 min
Nov 17, 4:26 AM EST	Severe Thunderstorm Warning	OKX	Putnam, Westchester	49 min
Nov 17, 4:42 AM EST	Severe Thunderstorm Warning	ALY	Columbia, Dutchess, Greene	52 min
Nov 17, 4:43 AM EST	Severe Thunderstorm Warning	OKX	Bronx, Kings, Nassau, New York, Orange, Putnam and 3 more	29 min
Dec 1, 12:47 PM EST	Severe Thunderstorm Warning	OKX	Orange, Rockland	58 min
Dec 1, 1:45 PM EST	Severe Thunderstorm Warning	OKX	Bronx, Kings, Nassau, New York, Queens, Richmond and 1 more	45 min
Dec 1, 1:58 PM EST	Severe Thunderstorm Warning	ALY	Fulton	47 min
Dec 1, 2:27 PM EST	Severe Thunderstorm Warning	OKX	Bronx, Kings, Nassau, Queens, Suffolk, Westchester	63 min

By county

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

22 more counties

The busiest days

Days with the most alerts issued, by UTC date.

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.