Alert archive / New York / Westchester County

Weather alerts in Westchester County, New York, 2016

184 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Westchester County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts: 184
Warnings: 38
Watches: 22
Advisories: 50
Busiest month: July38 alerts
Busiest day: August 14, 201611 alerts

Over time

By month

Warning verification

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

Westchester County, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	18	12	33%	4	75%	13 min
Flash flood warnings	1	1	0%	0

Each office's whole area, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS New York, NY: tornado warnings	1	1	0%	1	100%	4 min
NWS New York, NY: severe thunderstorm warnings	64	37	42%	127	61%	23 min
NWS New York, NY: flash flood warnings	15	9	40%	49	82%	52 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 9, 12:38 PM EST	Coastal Flood Advisory	OKX	25 hr
Jan 10, 9:51 AM EST	Areal Flood Advisory	OKX	114 min
Jan 10, 11:37 AM EST	Areal Flood Advisory	OKX	113 min
Jan 10, 3:32 PM EST	Special Weather Statement	OKX	58 min
Jan 12, 3:48 PM EST	Wind Advisory	OKX	18 hr
Jan 21, 3:42 AM EST	Winter Storm Watch	OKX	43 hr
Jan 21, 4:11 PM EST	Coastal Flood Watch	OKX	24 hr
Jan 22, 4:18 AM EST	Blizzard Warning	OKX	48 hr
Jan 22, 4:18 AM EST	Winter Storm Warning	OKX	48 hr
Jan 22, 4:31 AM EST	Coastal Flood Warning	OKX	33 hr
Jan 22, 4:31 AM EST	Coastal Flood Warning	OKX	43 hr
Jan 22, 4:31 AM EST	Coastal Flood Advisory	OKX	33 hr
Jan 22, 4:31 AM EST	Coastal Flood Advisory	OKX	44 hr
Jan 23, 4:20 AM EST	Mesoscale Discussion	SPC	5 hr
Jan 23, 8:51 AM EST	Mesoscale Discussion	SPC	4 hr
Jan 23, 9:26 AM EST	Special Weather Statement	OKX	3 hr
Jan 23, 12:44 PM EST	Mesoscale Discussion	SPC	6 hr
Jan 23, 6:40 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 4, 4:06 PM EST	Winter Weather Advisory	OKX	20 hr
Feb 5, 7:44 AM EST	Mesoscale Discussion	SPC	6 hr
Feb 7, 2:22 PM EST	Winter Weather Advisory	OKX	28 hr
Feb 7, 4:36 PM EST	Coastal Flood Advisory	OKX	20 hr
Feb 7, 4:36 PM EST	Coastal Flood Advisory	OKX	32 hr
Feb 8, 9:26 AM EST	Coastal Flood Warning	OKX	4 hr
Feb 8, 5:05 PM EST	Coastal Flood Advisory	OKX	20 hr
Feb 9, 4:32 AM EST	Winter Weather Advisory	OKX	17 hr
Feb 9, 5:02 AM EST	Coastal Flood Advisory	OKX	21 hr
Feb 9, 3:09 PM EST	Coastal Flood Advisory	OKX	22 hr
Feb 11, 4:05 PM EST	Wind Chill Watch	OKX	24 hr
Feb 12, 4:04 AM EST	Wind Chill Warning	OKX	56 hr
Feb 12, 4:04 AM EST	Wind Chill Advisory	OKX	56 hr
Feb 14, 3:45 PM EST	Winter Weather Advisory	OKX	39 hr
Feb 15, 6:19 PM EST	Mesoscale Discussion	SPC	5 hr
Feb 16, 1:32 PM EST	Special Weather Statement	OKX	88 min
Feb 23, 4:45 AM EST	Winter Weather Advisory	OKX	23 hr
Feb 23, 10:49 AM EST	Coastal Flood Statement	OKX	13 hr
Feb 24, 3:50 AM EST	Wind Advisory	OKX	24 hr
Feb 24, 6:46 PM EST	Mesoscale Discussion	SPC	119 min
Feb 24, 7:44 PM EST	Severe Thunderstorm Watch	SPC	8 hr
Feb 24, 10:28 PM EST	Severe Thunderstorm Warning	OKX	62 min
Feb 24, 10:35 PM EST	Severe Thunderstorm Warning	OKX	55 min
Feb 24, 10:39 PM EST	Mesoscale Discussion	SPC	66 min
Feb 24, 10:54 PM EST	Areal Flood Advisory	OKX	3 hr
Feb 24, 11:26 PM EST	Severe Thunderstorm Warning	OKX	64 min
Feb 24, 11:28 PM EST	Areal Flood Advisory	OKX	3 hr
Mar 14, 1:12 PM EDT	Coastal Flood Advisory	OKX	17 hr
Mar 17, 1:10 PM EDT	Special Weather Statement	OKX	35 min
Mar 28, 3:19 AM EDT	Wind Advisory	OKX	32 hr
Apr 1, 4:00 AM EDT	High Wind Watch	OKX	25 hr
Apr 1, 1:46 PM EDT	Mesoscale Discussion	SPC	119 min
Apr 1, 6:41 PM EDT	Special Weather Statement	OKX	34 min
Apr 2, 4:34 AM EDT	High Wind Warning	OKX	33 hr
Apr 2, 4:03 PM EDT	Freeze Watch	OKX	12 hr
Apr 3, 12:31 AM EDT	Special Weather Statement	OKX	59 min
Apr 3, 4:22 AM EDT	Freeze Warning	OKX	26 hr
Apr 3, 5:44 AM EDT	Special Weather Statement	OKX	31 min
Apr 3, 5:51 PM EDT	Freeze Warning	OKX	40 hr
Apr 4, 12:25 PM EDT	Winter Weather Advisory	OKX	7 hr
Apr 4, 3:55 PM EDT	Freeze Warning	OKX	41 hr
Apr 7, 3:22 PM EDT	Coastal Flood Statement	OKX	7 hr
Apr 7, 8:17 PM EDT	Coastal Flood Statement	OKX	6 hr
Apr 8, 3:55 AM EDT	Freeze Watch	OKX	25 hr
Apr 9, 4:30 AM EDT	Freeze Warning	OKX	29 hr
Apr 9, 2:43 PM EDT	Coastal Flood Statement	OKX	13 hr
Apr 12, 3:38 PM EDT	Freeze Warning	OKX	16 hr
Apr 13, 4:12 AM EDT	Freeze Watch	OKX	11 hr
Apr 13, 3:29 PM EDT	Freeze Warning	OKX	12 hr
Apr 16, 3:39 PM EDT	Frost Advisory	OKX	15 hr
Apr 27, 3:28 AM EDT	Frost Advisory	OKX	24 hr
May 4, 4:10 AM EDT	Coastal Flood Statement	OKX	20 hr
May 4, 4:10 AM EDT	Coastal Flood Advisory	OKX	20 hr
May 4, 8:51 PM EDT	Coastal Flood Advisory	OKX	27 hr
May 5, 10:46 PM EDT	Coastal Flood Advisory	OKX	27 hr
May 6, 4:58 PM EDT	Coastal Flood Advisory	OKX	34 hr
May 14, 6:25 AM EDT	Dense Fog Advisory	OKX	95 min
May 14, 6:08 PM EDT	Special Weather Statement	OKX	52 min
May 28, 5:32 PM EDT	Areal Flood Advisory	OKX	118 min
May 30, 2:27 AM EDT	Areal Flood Advisory	OKX	5 hr
Jun 5, 6:27 PM EDT	Severe Thunderstorm Warning	OKX	36 min
Jun 7, 5:14 PM EDT	Special Weather Statement	OKX	46 min
Jun 8, 12:04 PM EDT	Special Weather Statement	OKX	56 min
Jun 28, 10:59 PM EDT	Special Weather Statement	OKX	61 min
Jul 1, 12:51 PM EDT	Mesoscale Discussion	SPC	114 min
Jul 1, 1:32 PM EDT	Tornado Watch	SPC	8 hr
Jul 1, 4:15 PM EDT	Severe Thunderstorm Warning	OKX	24 min
Jul 1, 5:02 PM EDT	Severe Thunderstorm Warning	OKX	43 min
Jul 1, 5:12 PM EDT	Severe Thunderstorm Warning	OKX	48 min
Jul 1, 5:21 PM EDT	Mesoscale Discussion	SPC	84 min
Jul 1, 6:06 PM EDT	Severe Thunderstorm Warning	OKX	39 min
Jul 1, 9:10 PM EDT	Severe Thunderstorm Warning	OKX	29 min
Jul 2, 12:28 AM EDT	Special Weather Statement	OKX	62 min
Jul 7, 4:00 AM EDT	Flash Flood Watch	OKX	14 hr
Jul 7, 3:37 PM EDT	Special Weather Statement	OKX	53 min
Jul 7, 4:04 PM EDT	Severe Thunderstorm Warning	OKX	26 min
Jul 7, 6:29 PM EDT	Special Weather Statement	OKX	31 min
Jul 14, 12:58 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Jul 14, 3:17 PM EDT	Mesoscale Discussion	SPC	88 min
Jul 14, 4:12 PM EDT	Severe Thunderstorm Warning	OKX	63 min
Jul 14, 4:36 PM EDT	Special Weather Statement	OKX	54 min
Jul 18, 11:40 AM EDT	Mesoscale Discussion	SPC	95 min
Jul 18, 12:05 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 18, 3:21 PM EDT	Mesoscale Discussion	SPC	84 min
Jul 18, 3:38 PM EDT	Severe Thunderstorm Warning	OKX	37 min
Jul 18, 3:45 PM EDT	Special Weather Statement	OKX	30 min
Jul 18, 6:49 PM EDT	Mesoscale Discussion	SPC	86 min
Jul 24, 3:27 AM EDT	Heat Advisory	OKX	39 hr
Jul 25, 12:43 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 25, 2:06 PM EDT	Special Weather Statement	OKX	54 min
Jul 25, 2:56 PM EDT	Special Weather Statement	OKX	64 min
Jul 25, 3:03 PM EDT	Mesoscale Discussion	SPC	57 min
Jul 25, 3:09 PM EDT	Severe Thunderstorm Warning	OKX	66 min
Jul 25, 4:52 PM EDT	Mesoscale Discussion	SPC	83 min
Jul 25, 4:58 PM EDT	Flash Flood Warning	OKX	3 hr
Jul 25, 6:27 PM EDT	Special Weather Statement	OKX	48 min
Jul 25, 6:32 PM EDT	Severe Thunderstorm Warning	OKX	43 min
Jul 25, 6:46 PM EDT	Areal Flood Advisory	OKX	119 min
Jul 28, 2:32 PM EDT	Flash Flood Watch	OKX	17 hr
Jul 29, 3:57 AM EDT	Areal Flood Advisory	OKX	63 min
Jul 29, 5:08 AM EDT	Areal Flood Advisory	OKX	52 min
Jul 31, 4:56 AM EDT	Flash Flood Watch	OKX	10 hr
Jul 31, 9:44 PM EDT	Areal Flood Advisory	OKX	3 hr
Aug 6, 2:19 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 9, 3:45 PM EDT	Heat Advisory	OKX	5 days
Aug 11, 2:27 PM EDT	Excessive Heat Watch	OKX	24 hr
Aug 11, 7:28 PM EDT	Special Weather Statement	OKX	47 min
Aug 11, 7:56 PM EDT	Areal Flood Advisory	OKX	2 hr
Aug 11, 8:06 PM EDT	Special Weather Statement	OKX	39 min
Aug 12, 4:15 AM EDT	Excessive Heat Warning	OKX	65 hr
Aug 12, 2:01 PM EDT	Special Weather Statement	OKX	44 min
Aug 12, 2:54 PM EDT	Special Weather Statement	OKX	51 min
Aug 12, 6:57 PM EDT	Severe Thunderstorm Warning	OKX	48 min
Aug 13, 6:17 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 13, 8:20 PM EDT	Special Weather Statement	OKX	40 min
Aug 13, 8:24 PM EDT	Severe Thunderstorm Warning	OKX	51 min
Aug 13, 8:33 PM EDT	Areal Flood Advisory	OKX	117 min
Aug 13, 8:53 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 13, 9:03 PM EDT	Severe Thunderstorm Warning	OKX	42 min
Aug 13, 11:19 PM EDT	Special Weather Statement	OKX	26 min
Aug 13, 11:49 PM EDT	Severe Thunderstorm Warning	OKX	23 min
Aug 14, 12:18 AM EDT	Special Weather Statement	OKX	27 min
Aug 14, 1:47 AM EDT	Special Weather Statement	OKX	28 min
Aug 14, 1:48 AM EDT	Special Weather Statement	OKX	27 min
Aug 14, 1:45 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 16, 8:15 PM EDT	Special Weather Statement	OKX	45 min
Aug 17, 1:17 AM EDT	Special Weather Statement	OKX	43 min
Aug 30, 5:00 PM EDT	Tropical Storm Watch	NHC	5 days
Aug 31, 5:00 AM EDT	Tropical Storm Warning	NHC	10 days
Sep 2, 11:41 AM EDT	Tropical Storm Watch	OKX	24 hr
Sep 3, 4:14 AM EDT	Tropical Storm Warning	OKX	3 days
Sep 4, 11:05 PM EDT	Coastal Flood Statement	OKX	18 hr
Sep 5, 3:28 PM EDT	Coastal Flood Statement	OKX	13 hr
Sep 5, 3:28 PM EDT	Coastal Flood Statement	OKX	24 hr
Sep 14, 4:06 PM EDT	Special Weather Statement	OKX	39 min
Oct 14, 3:23 AM EDT	Frost Advisory	OKX	30 hr
Oct 19, 3:28 PM EDT	Coastal Flood Statement	OKX	25 hr
Oct 21, 5:15 AM EDT	Coastal Flood Statement	OKX	12 hr
Oct 21, 11:46 AM EDT	Areal Flood Advisory	OKX	59 min
Oct 21, 12:40 PM EDT	Areal Flood Advisory	OKX	2 hr
Oct 24, 3:16 PM EDT	Freeze Watch	OKX	13 hr
Oct 25, 3:50 AM EDT	Freeze Warning	OKX	29 hr
Oct 30, 2:20 PM EDT	Special Weather Statement	OKX	40 min
Oct 30, 2:48 PM EDT	Special Weather Statement	OKX	42 min
Oct 30, 4:26 PM EDT	Special Weather Statement	OKX	49 min
Oct 31, 3:47 AM EDT	Frost Advisory	OKX	29 hr
Nov 10, 3:38 PM EST	Freeze Watch	OKX	12 hr
Nov 11, 3:31 AM EST	Freeze Warning	OKX	28 hr
Nov 14, 3:15 PM EST	Coastal Flood Advisory	OKX	21 hr
Nov 15, 10:05 AM EST	Special Weather Statement	OKX	115 min
Nov 19, 3:25 PM EST	Wind Advisory	OKX	52 hr
Nov 19, 11:48 PM EST	Special Weather Statement	OKX	87 min
Nov 24, 7:12 PM EST	Special Weather Statement	OKX	78 min
Dec 10, 3:54 PM EST	Winter Weather Advisory	OKX	41 hr
Dec 10, 5:08 PM EST	Special Weather Statement	OKX	52 min
Dec 10, 5:09 PM EST	Special Weather Statement	OKX	51 min
Dec 11, 7:04 PM EST	Coastal Flood Statement	OKX	15 hr
Dec 14, 3:20 PM EST	High Wind Watch	OKX	13 hr
Dec 14, 3:20 PM EST	Wind Advisory	OKX	24 hr
Dec 15, 3:52 AM EST	High Wind Warning	OKX	24 hr
Dec 16, 4:20 AM EST	Winter Weather Advisory	OKX	35 hr
Dec 17, 6:30 AM EST	Special Weather Statement	OKX	60 min
Dec 17, 6:57 AM EST	Mesoscale Discussion	SPC	5 hr
Dec 17, 9:04 AM EST	Special Weather Statement	OKX	41 min
Dec 17, 10:02 AM EST	Special Weather Statement	OKX	58 min
Dec 18, 1:11 AM EST	Dense Fog Advisory	OKX	7 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	18
Severe Thunderstorm Watch	5
Tornado Watch	1
Mesoscale Discussion	21
Special Weather Statement	42
Flooding
Flash Flood Warning	1
Flash Flood Watch	3
Areal Flood Advisory	14
Winter
Blizzard Warning	1
Winter Storm Warning	1
Winter Storm Watch	1
Winter Weather Advisory	8
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	2
Cold
Freeze Warning	8
Wind Chill Warning	1
Freeze Watch	5
Wind Chill Watch	1
Frost Advisory	4
Wind Chill Advisory	1
Wind and dust
High Wind Warning	2
High Wind Watch	2
Wind Advisory	5
Fog and smoke
Dense Fog Advisory	2
Tropical
Tropical Storm Warning	2
Tropical Storm Watch	2
Coast and beach
Coastal Flood Warning	3
Coastal Flood Watch	1
Coastal Flood Advisory	14
Coastal Flood Statement	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 2015 2017

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.