Alert archive / New York / Suffolk County

Weather alerts in Suffolk County, New York, 2019

247 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Suffolk County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts: 247
Warnings: 39
Watches: 21
Advisories: 88
Busiest month: July41 alerts
Busiest day: July 22, 201912 alerts

Over time

By month

Warning verification

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

1 of 1 tornado warnings covering Suffolk County in 2019 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 0 minutes after it went out.

Suffolk County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	1	0%	1	100%	0 min
Severe thunderstorm warnings	18	13	28%	77	81%	19 min
Flash flood warnings	3	3	0%	2	100%	25 min

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS New York, NY: tornado warnings	3	1	67%	2	50%	0 min
NWS New York, NY: severe thunderstorm warnings	91	61	33%	238	78%	20 min
NWS New York, NY: flash flood warnings	28	25	11%	83	72%	58 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 1, 3:53 AM EST	Wind Advisory	OKX	9 hr
Jan 4, 3:33 AM EST	Coastal Flood Statement	OKX	32 hr
Jan 17, 3:31 PM EST	Winter Storm Watch	OKX	36 hr
Jan 19, 3:50 AM EST	Winter Weather Advisory	OKX	35 hr
Jan 19, 4:41 AM EST	Coastal Flood Advisory	OKX	32 hr
Jan 19, 3:01 PM EST	Flash Flood Watch	OKX	22 hr
Jan 20, 4:56 AM EST	Areal Flood Advisory	OKX	3 hr
Jan 20, 3:00 PM EST	Wind Advisory	OKX	28 hr
Jan 23, 4:00 AM EST	Flash Flood Watch	OKX	38 hr
Jan 23, 3:44 PM EST	Wind Advisory	OKX	26 hr
Jan 23, 3:56 PM EST	Coastal Flood Statement	OKX	23 hr
Jan 24, 1:03 PM EST	Areal Flood Advisory	OKX	3 hr
Jan 30, 3:58 AM EST	Wind Chill Advisory	OKX	30 hr
Jan 30, 3:59 AM EST	Wind Advisory	OKX	18 hr
Jan 30, 3:39 PM EST	Snow Squall Warning	OKX	66 min
Jan 30, 4:25 PM EST	Snow Squall Warning	OKX	65 min
Jan 30, 5:26 PM EST	Special Weather Statement	OKX	49 min
Feb 4, 3:49 AM EST	Dense Fog Advisory	OKX	3 hr
Feb 4, 6:21 AM EST	Freezing Fog Advisory	OKX	99 min
Feb 5, 2:05 AM EST	Dense Fog Advisory	OKX	7 hr
Feb 5, 2:05 AM EST	Freezing Fog Advisory	OKX	7 hr
Feb 11, 4:18 AM EST	Winter Weather Advisory	OKX	50 hr
Feb 17, 2:00 PM EST	Coastal Flood Statement	OKX	22 hr
Feb 18, 2:27 AM EST	Mesoscale Discussion	SPC	4 hr
Feb 19, 3:10 PM EST	Winter Weather Advisory	OKX	39 hr
Feb 23, 3:18 PM EST	High Wind Watch	OKX	13 hr
Feb 24, 3:54 AM EST	High Wind Warning	OKX	36 hr
Feb 25, 3:58 PM EST	Wind Advisory	OKX	5 hr
Mar 1, 3:17 PM EST	Winter Weather Advisory	OKX	20 hr
Mar 2, 3:41 AM EST	Winter Storm Watch	OKX	24 hr
Mar 3, 3:37 AM EST	Winter Storm Warning	OKX	27 hr
Mar 3, 5:41 PM EST	Mesoscale Discussion	SPC	4 hr
Mar 3, 10:44 PM EST	Mesoscale Discussion	SPC	4 hr
Mar 21, 4:14 AM EDT	Coastal Flood Advisory	OKX	22 hr
Mar 21, 4:10 PM EDT	Coastal Flood Statement	OKX	10 hr
Mar 21, 4:10 PM EDT	Coastal Flood Statement	OKX	22 hr
Apr 3, 4:20 AM EDT	Wind Advisory	OKX	16 hr
Apr 13, 8:09 PM EDT	Dense Fog Advisory	OKX	14 hr
Apr 14, 7:56 PM EDT	Dense Fog Advisory	OKX	9 hr
Apr 15, 3:24 AM EDT	Wind Advisory	OKX	21 hr
Apr 15, 5:03 AM EDT	Special Weather Statement	OKX	42 min
Apr 18, 4:10 PM EDT	Flash Flood Watch	OKX	47 hr
Apr 19, 4:31 AM EDT	Coastal Flood Statement	OKX	21 hr
Apr 22, 2:17 PM EDT	Special Weather Statement	OKX	43 min
Apr 22, 2:42 PM EDT	Areal Flood Advisory	OKX	93 min
Apr 26, 6:03 PM EDT	Special Weather Statement	OKX	57 min
Apr 26, 6:18 PM EDT	Areal Flood Advisory	OKX	117 min
Apr 26, 7:01 PM EDT	Special Weather Statement	OKX	44 min
Apr 26, 8:42 PM EDT	Special Weather Statement	OKX	63 min
Apr 26, 9:48 PM EDT	Areal Flood Advisory	OKX	117 min
May 12, 3:25 AM EDT	Coastal Flood Statement	OKX	26 hr
May 28, 9:36 PM EDT	Severe Thunderstorm Warning	OKX	24 min
Jun 2, 10:02 PM EDT	Severe Thunderstorm Warning	OKX	43 min
Jun 2, 10:49 PM EDT	Special Weather Statement	OKX	41 min
Jun 4, 4:15 PM EDT	Rip Current Statement	OKX	29 hr
Jun 10, 8:14 PM EDT	Dense Fog Advisory	OKX	8 hr
Jun 12, 4:13 PM EDT	Rip Current Statement	OKX	27 hr
Jun 13, 7:42 PM EDT	Rip Current Statement	OKX	24 hr
Jun 14, 5:32 PM EDT	Rip Current Statement	OKX	51 hr
Jun 20, 5:42 PM EDT	Areal Flood Advisory	OKX	50 min
Jun 21, 6:01 AM EDT	Areal Flood Advisory	OKX	59 min
Jun 21, 7:14 AM EDT	Rip Current Statement	OKX	14 hr
Jun 25, 10:39 AM EDT	Areal Flood Advisory	OKX	2 hr
Jun 25, 2:13 PM EDT	Areal Flood Advisory	OKX	86 min
Jun 25, 10:27 PM EDT	Dense Fog Advisory	OKX	7 hr
Jun 29, 11:34 AM EDT	Mesoscale Discussion	SPC	86 min
Jun 29, 3:34 PM EDT	Severe Thunderstorm Warning	OKX	41 min
Jun 30, 12:12 PM EDT	Special Weather Statement	OKX	48 min
Jun 30, 12:19 PM EDT	Severe Thunderstorm Warning	OKX	25 min
Jun 30, 12:43 PM EDT	Special Weather Statement	OKX	47 min
Jun 30, 2:30 PM EDT	Severe Thunderstorm Warning	OKX	45 min
Jun 30, 2:34 PM EDT	Severe Thunderstorm Warning	OKX	41 min
Jun 30, 4:31 PM EDT	Special Weather Statement	OKX	44 min
Jun 30, 4:36 PM EDT	Severe Thunderstorm Warning	OKX	24 min
Jul 6, 1:48 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 17, 5:16 AM EDT	Flash Flood Watch	OKX	19 hr
Jul 17, 10:55 AM EDT	Heat Advisory	OKX	9 hr
Jul 17, 1:03 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 17, 1:05 PM EDT	Special Weather Statement	OKX	40 min
Jul 17, 1:58 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 17, 3:59 PM EDT	Excessive Heat Watch	OKX	24 hr
Jul 17, 3:59 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 17, 6:54 PM EDT	Mesoscale Discussion	SPC	96 min
Jul 17, 7:53 PM EDT	Areal Flood Advisory	OKX	3 hr
Jul 17, 8:36 PM EDT	Flash Flood Warning	OKX	4 hr
Jul 17, 8:37 PM EDT	Severe Thunderstorm Warning	OKX	38 min
Jul 18, 3:43 PM EDT	Excessive Heat Warning	OKX	3 days
Jul 18, 3:43 PM EDT	Heat Advisory	OKX	37 hr
Jul 21, 4:00 AM EDT	Flash Flood Watch	OKX	55 hr
Jul 21, 10:20 PM EDT	Special Weather Statement	OKX	40 min
Jul 22, 12:25 AM EDT	Special Weather Statement	OKX	35 min
Jul 22, 1:11 PM EDT	Mesoscale Discussion	SPC	94 min
Jul 22, 2:17 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 22, 5:48 PM EDT	Severe Thunderstorm Warning	OKX	42 min
Jul 22, 6:22 PM EDT	Severe Thunderstorm Warning	OKX	38 min
Jul 22, 6:35 PM EDT	Severe Thunderstorm Warning	OKX	40 min
Jul 22, 6:55 PM EDT	Areal Flood Advisory	OKX	3 hr
Jul 22, 7:03 PM EDT	Special Weather Statement	OKX	57 min
Jul 22, 7:03 PM EDT	Mesoscale Discussion	SPC	57 min
Jul 22, 7:10 PM EDT	Flash Flood Warning	OKX	3 hr
Jul 22, 7:14 PM EDT	Severe Thunderstorm Warning	OKX	46 min
Jul 22, 8:01 PM EDT	Special Weather Statement	OKX	44 min
Jul 22, 8:51 PM EDT	Mesoscale Discussion	SPC	84 min
Jul 23, 6:35 AM EDT	Areal Flood Advisory	OKX	115 min
Jul 23, 7:17 AM EDT	Flash Flood Warning	OKX	118 min
Jul 23, 7:42 AM EDT	Areal Flood Advisory	OKX	2 hr
Jul 23, 8:34 AM EDT	Areal Flood Advisory	OKX	86 min
Jul 23, 7:58 PM EDT	Rip Current Statement	OKX	25 hr
Jul 29, 3:36 PM EDT	Heat Advisory	OKX	29 hr
Jul 30, 1:03 PM EDT	Special Weather Statement	OKX	42 min
Jul 30, 1:16 PM EDT	Areal Flood Advisory	OKX	59 min
Jul 30, 1:58 PM EDT	Severe Thunderstorm Warning	OKX	18 min
Jul 31, 12:39 PM EDT	Mesoscale Discussion	SPC	66 min
Jul 31, 1:17 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 31, 4:19 PM EDT	Mesoscale Discussion	SPC	56 min
Aug 3, 11:08 PM EDT	Areal Flood Advisory	OKX	97 min
Aug 6, 3:20 PM EDT	Rip Current Statement	OKX	30 hr
Aug 7, 1:02 PM EDT	Mesoscale Discussion	SPC	88 min
Aug 7, 2:10 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 7, 6:56 PM EDT	Mesoscale Discussion	SPC	64 min
Aug 7, 7:41 PM EDT	Special Weather Statement	OKX	49 min
Aug 8, 8:03 PM EDT	Special Weather Statement	OKX	42 min
Aug 8, 8:04 PM EDT	Special Weather Statement	OKX	41 min
Aug 9, 11:49 AM EDT	Rip Current Statement	OKX	8 hr
Aug 10, 5:46 AM EDT	Rip Current Statement	OKX	15 hr
Aug 17, 1:27 PM EDT	Areal Flood Advisory	OKX	2 hr
Aug 17, 2:44 PM EDT	Areal Flood Advisory	OKX	91 min
Aug 18, 12:31 PM EDT	Heat Advisory	OKX	30 hr
Aug 19, 1:38 PM EDT	Mesoscale Discussion	SPC	67 min
Aug 19, 5:09 PM EDT	Areal Flood Advisory	OKX	66 min
Aug 19, 5:42 PM EDT	Areal Flood Advisory	OKX	63 min
Aug 19, 6:45 PM EDT	Special Weather Statement	OKX	30 min
Aug 21, 3:54 AM EDT	Rip Current Statement	OKX	13 hr
Aug 21, 11:31 AM EDT	Mesoscale Discussion	SPC	119 min
Aug 21, 1:53 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 21, 3:55 PM EDT	Mesoscale Discussion	SPC	95 min
Aug 21, 6:20 PM EDT	Mesoscale Discussion	SPC	115 min
Aug 21, 6:28 PM EDT	Special Weather Statement	OKX	47 min
Aug 21, 7:04 PM EDT	Special Weather Statement	OKX	41 min
Aug 22, 9:25 PM EDT	Severe Thunderstorm Warning	OKX	46 min
Aug 22, 9:55 PM EDT	Severe Thunderstorm Warning	OKX	65 min
Aug 22, 10:15 PM EDT	Areal Flood Advisory	OKX	2 hr
Aug 22, 10:45 PM EDT	Severe Thunderstorm Warning	OKX	48 min
Aug 24, 4:38 PM EDT	Rip Current Statement	OKX	51 hr
Aug 27, 12:01 PM EDT	Rip Current Statement	OKX	8 hr
Aug 28, 1:11 PM EDT	Areal Flood Advisory	OKX	49 min
Aug 28, 2:01 PM EDT	Areal Flood Advisory	OKX	59 min
Aug 28, 3:05 PM EDT	Areal Flood Advisory	OKX	85 min
Aug 28, 4:18 PM EDT	Areal Flood Advisory	OKX	87 min
Aug 28, 5:20 PM EDT	Areal Flood Advisory	OKX	3 hr
Aug 28, 7:58 PM EDT	Areal Flood Advisory	OKX	3 hr
Sep 1, 12:12 PM EDT	Coastal Flood Statement	OKX	27 hr
Sep 1, 2:25 PM EDT	Rip Current Statement	OKX	29 hr
Sep 2, 3:36 PM EDT	Special Weather Statement	OKX	39 min
Sep 2, 3:54 PM EDT	Severe Thunderstorm Warning	OKX	36 min
Sep 2, 4:19 PM EDT	Special Weather Statement	OKX	56 min
Sep 2, 4:23 PM EDT	Severe Thunderstorm Warning	OKX	52 min
Sep 2, 4:38 PM EDT	Tornado Warning	OKX	18 min
Sep 3, 4:15 PM EDT	Rip Current Statement	OKX	4 days
Sep 4, 12:53 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Sep 4, 3:27 PM EDT	Mesoscale Discussion	SPC	93 min
Sep 4, 8:16 PM EDT	Special Weather Statement	OKX	14 min
Sep 5, 1:45 PM EDT	High Surf Advisory	OKX	55 hr
Sep 5, 6:08 PM EDT	Coastal Flood Advisory	OKX	35 hr
Sep 7, 4:45 AM EDT	Coastal Flood Statement	OKX	16 hr
Sep 11, 3:40 AM EDT	Rip Current Statement	OKX	16 hr
Sep 12, 8:26 AM EDT	Areal Flood Advisory	OKX	64 min
Sep 12, 4:13 PM EDT	Rip Current Statement	OKX	50 hr
Sep 17, 3:20 PM EDT	Rip Current Statement	OKX	4 days
Sep 22, 3:31 PM EDT	Rip Current Statement	OKX	4 days
Sep 26, 3:40 PM EDT	Mesoscale Discussion	SPC	2 hr
Sep 26, 4:34 PM EDT	Special Weather Statement	OKX	41 min
Sep 28, 10:31 AM EDT	Coastal Flood Statement	OKX	27 hr
Sep 29, 12:53 PM EDT	Coastal Flood Statement	OKX	13 hr
Sep 29, 3:47 PM EDT	Coastal Flood Statement	OKX	23 hr
Sep 29, 3:47 PM EDT	Coastal Flood Advisory	OKX	23 hr
Oct 2, 1:08 PM EDT	Coastal Flood Statement	OKX	28 hr
Oct 2, 1:08 PM EDT	Coastal Flood Advisory	OKX	27 hr
Oct 2, 3:41 PM EDT	Special Weather Statement	OKX	49 min
Oct 9, 4:47 AM EDT	Coastal Flood Watch	OKX	11 hr
Oct 9, 4:47 AM EDT	Coastal Flood Statement	OKX	11 hr
Oct 9, 4:47 AM EDT	Coastal Flood Advisory	OKX	30 hr
Oct 9, 12:10 PM EDT	Wind Advisory	OKX	40 hr
Oct 9, 4:15 PM EDT	Coastal Flood Warning	OKX	56 hr
Oct 10, 5:07 AM EDT	Coastal Flood Watch	OKX	11 hr
Oct 10, 5:07 AM EDT	Coastal Flood Advisory	OKX	36 hr
Oct 10, 4:34 PM EDT	Coastal Flood Watch	OKX	12 hr
Oct 11, 4:39 PM EDT	Coastal Flood Statement	OKX	8 hr
Oct 11, 4:39 PM EDT	Coastal Flood Advisory	OKX	8 hr
Oct 12, 12:04 AM EDT	Coastal Flood Warning	OKX	56 min
Oct 12, 4:02 AM EDT	Coastal Flood Statement	OKX	9 hr
Oct 12, 4:02 AM EDT	Coastal Flood Warning	OKX	8 hr
Oct 12, 4:02 AM EDT	Coastal Flood Advisory	OKX	8 hr
Oct 12, 3:29 PM EDT	Coastal Flood Statement	OKX	9 hr
Oct 15, 3:29 PM EDT	Coastal Flood Statement	OKX	33 hr
Oct 15, 3:29 PM EDT	Coastal Flood Advisory	OKX	37 hr
Oct 16, 4:10 AM EDT	Wind Advisory	OKX	21 hr
Oct 16, 6:58 PM EDT	Areal Flood Advisory	OKX	3 hr
Oct 16, 8:21 PM EDT	Areal Flood Advisory	OKX	114 min
Oct 16, 8:52 PM EDT	Mesoscale Discussion	SPC	83 min
Oct 16, 9:12 PM EDT	Special Weather Statement	OKX	93 min
Oct 16, 10:56 PM EDT	Severe Thunderstorm Warning	OKX	49 min
Oct 17, 12:45 AM EDT	High Wind Warning	OKX	13 hr
Oct 17, 1:43 PM EDT	Wind Advisory	OKX	4 hr
Oct 26, 4:40 AM EDT	Coastal Flood Advisory	OKX	32 hr
Oct 28, 6:02 AM EDT	Coastal Flood Advisory	OKX	8 hr
Oct 28, 6:02 AM EDT	Coastal Flood Advisory	OKX	20 hr
Oct 28, 6:02 AM EDT	Coastal Flood Advisory	OKX	32 hr
Oct 28, 3:49 PM EDT	Coastal Flood Statement	OKX	22 hr
Oct 30, 4:04 PM EDT	Wind Advisory	OKX	44 hr
Oct 31, 4:02 AM EDT	Freeze Watch	OKX	36 hr
Oct 31, 2:13 PM EDT	Coastal Flood Statement	OKX	14 hr
Oct 31, 3:48 PM EDT	High Wind Warning	OKX	12 hr
Nov 1, 12:50 AM EDT	Mesoscale Discussion	SPC	85 min
Nov 1, 1:40 AM EDT	Special Weather Statement	OKX	50 min
Nov 1, 2:17 AM EDT	Special Weather Statement	OKX	43 min
Nov 1, 3:43 PM EDT	Frost Advisory	OKX	18 hr
Nov 1, 3:43 PM EDT	Freeze Warning	OKX	18 hr
Nov 3, 3:42 AM EST	Frost Advisory	OKX	29 hr
Nov 3, 3:42 AM EST	Freeze Watch	OKX	12 hr
Nov 16, 5:07 AM EST	Coastal Flood Watch	OKX	35 hr
Nov 16, 5:07 AM EST	Coastal Flood Advisory	OKX	58 hr
Nov 16, 3:59 PM EST	Coastal Flood Warning	OKX	15 hr
Nov 17, 4:20 PM EST	Coastal Flood Advisory	OKX	24 hr
Nov 18, 5:50 AM EST	Coastal Flood Statement	OKX	9 hr
Nov 18, 3:25 PM EST	Coastal Flood Statement	OKX	35 min
Nov 23, 4:27 AM EST	Coastal Flood Advisory	OKX	31 hr
Nov 27, 5:08 AM EST	Dense Fog Advisory	OKX	2 hr
Nov 30, 4:41 PM EST	Winter Weather Advisory	OKX	62 hr
Dec 1, 6:49 AM EST	Coastal Flood Statement	OKX	22 hr
Dec 1, 6:49 AM EST	Coastal Flood Advisory	OKX	22 hr
Dec 1, 3:11 PM EST	Coastal Flood Advisory	OKX	20 hr
Dec 2, 5:22 AM EST	Coastal Flood Statement	OKX	13 hr
Dec 2, 11:29 AM EST	Coastal Flood Warning	OKX	4 hr
Dec 2, 3:28 PM EST	Coastal Flood Warning	OKX	92 min
Dec 10, 3:19 AM EST	Winter Weather Advisory	OKX	32 hr
Dec 13, 3:17 AM EST	Coastal Flood Statement	OKX	35 hr
Dec 14, 1:24 AM EST	Areal Flood Advisory	OKX	96 min
Dec 15, 3:39 PM EST	Winter Weather Advisory	OKX	54 hr
Dec 18, 3:51 AM EST	Wind Advisory	OKX	26 hr
Dec 18, 3:18 PM EST	Snow Squall Warning	OKX	57 min
Dec 18, 4:00 PM EST	Snow Squall Warning	OKX	90 min
Dec 26, 5:13 AM EST	Dense Fog Advisory	OKX	3 hr
Dec 29, 3:24 PM EST	Coastal Flood Statement	OKX	25 hr
Dec 29, 3:24 PM EST	Coastal Flood Advisory	OKX	28 hr
Dec 30, 8:05 PM EST	Coastal Flood Statement	OKX	8 hr
Dec 31, 12:19 PM EST	Coastal Flood Statement	OKX	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	19
Tornado Warning	1
Severe Thunderstorm Watch	6
Mesoscale Discussion	23
Special Weather Statement	30
Flooding
Flash Flood Warning	3
Flash Flood Watch	5
Areal Flood Advisory	31
Winter
Snow Squall Warning	4
Winter Storm Warning	1
Winter Storm Watch	2
Winter Weather Advisory	7
Heat
Excessive Heat Warning	1
Excessive Heat Watch	1
Heat Advisory	4
Cold
Freeze Warning	1
Freeze Watch	2
Frost Advisory	2
Wind Chill Advisory	1
Wind and dust
High Wind Warning	3
High Wind Watch	1
Wind Advisory	12
Fog and smoke
Dense Fog Advisory	8
Freezing Fog Advisory	2
Coast and beach
Coastal Flood Warning	6
Coastal Flood Watch	4
Coastal Flood Advisory	20
High Surf Advisory	1
Coastal Flood Statement	28
Rip Current Statement	18

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2018 2020

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.