Alert archive / New York / St. Lawrence County

Weather alerts in St. Lawrence County, New York, 2022

161 weather alerts in 2022, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

St. Lawrence County and its neighbors

Each county as a circle sized by its count in 2022. Tap one for its archive.

Alerts: 161
Warnings: 55
Watches: 19
Advisories: 34
Busiest month: February26 alerts
Busiest day: June 16, 20229 alerts

Over time

By month

Warning verification

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

St. Lawrence County, 2022

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	0			0
Severe thunderstorm warnings	19	15	21%	20	90%	27 min
Flash flood warnings	2	0	100%	0

Each office's whole area, 2022

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Burlington, VT: tornado warnings	1	0	100%	2	0%
NWS Burlington, VT: severe thunderstorm warnings	75	55	27%	134	78%	23 min
NWS Burlington, VT: flash flood warnings	6	1	83%	8	50%	64 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, 3:13 AM EST	Winter Storm Warning	BTV	39 hr
Jan 5, 3:48 AM EST	Winter Weather Advisory	BTV	39 hr
Jan 8, 3:13 PM EST	Winter Weather Advisory	BTV	24 hr
Jan 9, 2:47 PM EST	Wind Chill Warning	BTV	48 hr
Jan 12, 2:49 PM EST	Wind Chill Watch	BTV	25 hr
Jan 12, 5:07 PM EST	Winter Weather Advisory	BTV	12 hr
Jan 13, 3:31 PM EST	Wind Chill Warning	BTV	45 hr
Jan 14, 3:27 PM EST	Winter Storm Watch	BTV	36 hr
Jan 16, 3:43 AM EST	Winter Storm Warning	BTV	35 hr
Jan 17, 2:24 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 17, 8:22 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 20, 3:00 AM EST	Wind Chill Advisory	BTV	30 hr
Jan 25, 7:40 AM EST	Special Weather Statement	BTV	65 min
Jan 25, 2:55 PM EST	Wind Chill Advisory	BTV	18 hr
Jan 26, 3:33 PM EST	Wind Chill Advisory	BTV	17 hr
Jan 28, 3:30 AM EST	Wind Chill Warning	BTV	33 hr
Jan 29, 12:45 PM EST	Wind Chill Warning	BTV	21 hr
Jan 29, 12:45 PM EST	Wind Chill Advisory	BTV	21 hr
Feb 1, 3:29 AM EST	Winter Storm Watch	BTV	24 hr
Feb 2, 3:52 AM EST	Winter Storm Warning	BTV	63 hr
Feb 12, 11:30 AM EST	Special Weather Statement	BTV	60 min
Feb 16, 2:42 AM EST	Flood Watch	BTV	61 hr
Feb 16, 2:51 AM EST	Winter Storm Watch	BTV	12 hr
Feb 16, 3:03 PM EST	Winter Storm Warning	BTV	46 hr
Feb 16, 3:03 PM EST	Winter Weather Advisory	BTV	46 hr
Feb 17, 11:56 PM EST	Areal Flood Warning	BTV	5 hr
Feb 19, 5:56 AM EST	Mesoscale Discussion	SPC	5 hr
Feb 19, 9:02 AM EST	Snow Squall Warning	BTV	43 min
Feb 19, 9:43 AM EST	Special Weather Statement	BTV	47 min
Feb 19, 10:09 AM EST	Mesoscale Discussion	SPC	4 hr
Feb 19, 10:48 AM EST	Special Weather Statement	BTV	57 min
Feb 20, 2:47 PM EST	Winter Weather Advisory	BTV	21 hr
Feb 21, 3:38 AM EST	Flood Watch	BTV	63 hr
Feb 21, 2:20 PM EST	Winter Weather Advisory	BTV	35 hr
Feb 23, 3:52 AM EST	Winter Storm Watch	BTV	24 hr
Feb 24, 4:04 AM EST	Winter Storm Warning	BTV	40 hr
Feb 25, 2:20 AM EST	Mesoscale Discussion	SPC	6 hr
Feb 26, 3:05 PM EST	Winter Weather Advisory	BTV	27 hr
Feb 27, 3:23 AM EST	Wind Chill Advisory	BTV	28 hr
Feb 27, 12:44 PM EST	Snow Squall Warning	BTV	46 min
Feb 27, 12:45 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 27, 1:28 PM EST	Snow Squall Warning	BTV	62 min
Feb 27, 2:21 PM EST	Snow Squall Warning	BTV	54 min
Feb 27, 3:13 PM EST	Snow Squall Warning	BTV	62 min
Mar 6, 3:14 AM EST	Wind Advisory	BTV	22 hr
Mar 7, 3:38 AM EST	Winter Weather Advisory	BTV	6 hr
Mar 10, 2:59 AM EST	Winter Storm Watch	BTV	24 hr
Mar 11, 3:25 AM EST	Winter Storm Warning	BTV	45 hr
Mar 23, 4:12 AM EDT	Winter Weather Advisory	BTV	33 hr
Mar 31, 6:02 PM EDT	Special Weather Statement	BTV	28 min
Apr 14, 4:05 AM EDT	Wind Advisory	BTV	23 hr
Apr 15, 3:34 AM EDT	High Wind Warning	BTV	19 hr
Apr 15, 3:34 AM EDT	Wind Advisory	BTV	19 hr
Apr 17, 3:39 PM EDT	Winter Storm Watch	BTV	12 hr
Apr 18, 3:57 AM EDT	Winter Storm Warning	BTV	35 hr
Apr 18, 3:57 AM EDT	Winter Weather Advisory	BTV	12 hr
Apr 18, 10:06 PM EDT	Mesoscale Discussion	SPC	5 hr
Apr 18, 10:29 PM EDT	Winter Weather Advisory	BTV	17 hr
Apr 19, 3:50 AM EDT	Special Weather Statement	BTV	55 min
May 14, 4:31 PM EDT	Special Weather Statement	BTV	44 min
May 14, 5:04 PM EDT	Special Weather Statement	BTV	41 min
May 14, 5:07 PM EDT	Special Weather Statement	BTV	38 min
May 14, 5:46 PM EDT	Special Weather Statement	BTV	44 min
May 14, 6:26 PM EDT	Special Weather Statement	BTV	49 min
May 14, 6:28 PM EDT	Special Weather Statement	BTV	47 min
May 15, 4:48 PM EDT	Areal Flood Warning	BTV	3 hr
May 16, 12:48 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 16, 1:22 PM EDT	Severe Thunderstorm Warning	BTV	53 min
May 16, 2:55 PM EDT	Areal Flood Warning	BTV	5 hr
May 16, 3:19 PM EDT	Severe Thunderstorm Warning	BTV	56 min
May 16, 4:10 PM EDT	Areal Flood Warning	BTV	3 hr
May 21, 2:47 PM EDT	Mesoscale Discussion	SPC	118 min
May 21, 3:18 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
May 21, 3:39 PM EDT	Special Weather Statement	BTV	51 min
May 21, 4:25 PM EDT	Special Weather Statement	BTV	50 min
May 21, 4:56 PM EDT	Severe Thunderstorm Warning	BTV	47 min
May 23, 2:32 PM EDT	Frost Advisory	BTV	16 hr
Jun 16, 7:31 AM EDT	Special Weather Statement	BTV	44 min
Jun 16, 2:43 PM EDT	Tornado Watch	SPC	8 hr
Jun 16, 3:38 PM EDT	Mesoscale Discussion	SPC	97 min
Jun 16, 4:23 PM EDT	Severe Thunderstorm Warning	BTV	52 min
Jun 16, 4:43 PM EDT	Severe Thunderstorm Warning	BTV	62 min
Jun 16, 5:25 PM EDT	Severe Thunderstorm Warning	BTV	65 min
Jun 16, 5:41 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BTV	45 min
Jun 16, 6:45 PM EDT	Special Weather Statement	BTV	30 min
Jun 16, 7:07 PM EDT	Special Weather Statement	BTV	23 min
Jun 21, 6:12 PM EDT	Special Weather Statement	BTV	48 min
Jun 23, 12:49 AM EDT	Areal Flood Warning	BTV	4 hr
Jul 12, 2:21 PM EDT	Severe Thunderstorm Warning	BTV	40 min
Jul 19, 3:25 PM EDT	Heat Advisory	BTV	28 hr
Jul 19, 5:11 PM EDT	Special Weather Statement	BTV	64 min
Jul 19, 5:29 PM EDT	Severe Thunderstorm Warning	BTV	61 min
Jul 19, 5:52 PM EDT	Severe Thunderstorm Warning	BTV	53 min
Jul 19, 6:49 PM EDT	Special Weather Statement	BTV	56 min
Jul 19, 6:53 PM EDT	Severe Thunderstorm Warning	BTV	34 min
Jul 22, 11:45 PM EDT	Special Weather Statement	BTV	30 min
Jul 24, 2:30 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 24, 9:53 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 24, 10:27 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BTV	63 min
Jul 24, 11:18 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BTV	57 min
Jul 24, 11:38 PM EDT	Flash Flood Warning	BTV	4 hr
Jul 25, 12:27 AM EDT	Mesoscale Discussion	SPC	93 min
Jul 25, 12:37 AM EDT	Flash Flood Warning	BTV	3 hr
Jul 28, 12:05 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 28, 1:17 PM EDT	Mesoscale Discussion	SPC	118 min
Jul 28, 1:38 PM EDT	Severe Thunderstorm Warning	BTV	67 min
Jul 28, 2:21 PM EDT	Severe Thunderstorm Warning	BTV	54 min
Aug 8, 4:53 PM EDT	Special Weather Statement	BTV	22 min
Aug 8, 5:13 PM EDT	Special Weather Statement	BTV	32 min
Aug 16, 2:28 PM EDT	Special Weather Statement	BTV	47 min
Aug 23, 2:25 PM EDT	Special Weather Statement	BTV	65 min
Aug 29, 5:52 PM EDT	Special Weather Statement	BTV	38 min
Aug 29, 7:22 PM EDT	Special Weather Statement	BTV	38 min
Aug 29, 7:55 PM EDT	Special Weather Statement	BTV	50 min
Aug 31, 3:15 PM EDT	Special Weather Statement	BTV	45 min
Aug 31, 3:16 PM EDT	Mesoscale Discussion	SPC	119 min
Aug 31, 3:21 PM EDT	Severe Thunderstorm Warning	BTV	54 min
Aug 31, 3:40 PM EDT	Severe Thunderstorm Warning	BTV	65 min
Aug 31, 4:10 PM EDT	Severe Thunderstorm Warning	BTV	50 min
Sep 18, 7:26 PM EDT	Special Weather Statement	BTV	64 min
Sep 19, 12:03 PM EDT	Areal Flood Warning	BTV	4 hr
Sep 19, 3:15 PM EDT	Mesoscale Discussion	SPC	3 hr
Sep 22, 1:07 AM EDT	Special Weather Statement	BTV	53 min
Sep 22, 1:42 AM EDT	Severe Thunderstorm Warning	BTV	48 min
Sep 23, 3:21 AM EDT	Frost Advisory	BTV	28 hr
Sep 28, 2:31 PM EDT	Freeze Watch	BTV	13 hr
Sep 29, 3:16 AM EDT	Freeze Warning	BTV	29 hr
Oct 2, 3:30 AM EDT	Freeze Warning	BTV	29 hr
Oct 3, 3:14 PM EDT	Frost Advisory	BTV	18 hr
Oct 3, 3:14 PM EDT	Freeze Warning	BTV	18 hr
Oct 4, 2:37 PM EDT	Frost Advisory	BTV	18 hr
Oct 9, 3:29 PM EDT	Frost Advisory	BTV	12 hr
Oct 10, 2:45 PM EDT	Frost Advisory	BTV	16 hr
Oct 12, 1:39 PM EDT	Wind Advisory	BTV	28 hr
Oct 13, 12:57 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 13, 1:35 PM EDT	Special Weather Statement	BTV	55 min
Oct 13, 2:28 PM EDT	Special Weather Statement	BTV	62 min
Nov 15, 3:26 AM EST	Winter Weather Advisory	BTV	33 hr
Nov 16, 2:50 PM EST	Lake Effect Snow Warning	BTV	4 days
Nov 16, 2:50 PM EST	Winter Weather Advisory	BTV	13 hr
Nov 29, 2:52 AM EST	Wind Advisory	BTV	42 hr
Dec 2, 2:54 PM EST	Wind Advisory	BTV	27 hr
Dec 14, 2:33 AM EST	Winter Storm Watch	BTV	24 hr
Dec 14, 3:42 PM EST	Winter Storm Warning	BTV	69 hr
Dec 20, 3:50 PM EST	High Wind Watch	BTV	23 hr
Dec 21, 3:11 PM EST	High Wind Warning	BTV	45 hr
Dec 21, 3:11 PM EST	Wind Advisory	BTV	45 hr
Dec 21, 3:11 PM EST	Wind Advisory	BTV	63 hr
Dec 22, 3:49 AM EST	Winter Storm Watch	BTV	12 hr
Dec 22, 3:19 PM EST	Lake Effect Snow Warning	BTV	4 days
Dec 23, 4:08 AM EST	Blizzard Warning	BTV	56 hr
Dec 23, 3:50 PM EST	Mesoscale Discussion	SPC	5 hr
Dec 24, 2:02 AM EST	Special Weather Statement	BTV	58 min
Dec 24, 3:11 AM EST	Special Weather Statement	BTV	94 min
Dec 25, 5:07 AM EST	Special Weather Statement	BTV	83 min
Dec 25, 6:30 AM EST	Special Weather Statement	BTV	60 min
Dec 25, 8:10 AM EST	Special Weather Statement	BTV	110 min
Dec 25, 11:50 AM EST	Areal Flood Warning	BTV	92 min
Dec 25, 1:22 PM EST	Flash Flood Warning	BTV	4 hr
Dec 25, 5:43 PM EST	Areal Flood Warning	BTV	3 hr
Dec 27, 2:38 AM EST	Winter Weather Advisory	BTV	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	19
Severe Thunderstorm Watch	5
Tornado Watch	1
Mesoscale Discussion	15
Special Weather Statement	38
Flooding
Areal Flood Warning	8
Flash Flood Warning	3
Flood Watch	2
Winter
Blizzard Warning	1
Lake Effect Snow Warning	2
Snow Squall Warning	5
Winter Storm Warning	8
Winter Storm Watch	8
Winter Weather Advisory	14
Heat
Heat Advisory	1
Cold
Freeze Warning	3
Wind Chill Warning	4
Freeze Watch	1
Wind Chill Watch	1
Frost Advisory	6
Wind Chill Advisory	5
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	8

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2021 2023

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.