Weather alerts in Lewis County, New York, 2019

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

Lewis County and its neighbors

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

Alerts: 186
Warnings: 46
Watches: 20
Advisories: 40
Busiest month: January36 alerts
Busiest day: January 31, 20197 alerts

Over time

By month

Warning verification

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

0 of 1 tornado warnings covering Lewis County in 2019 had a tornado report inside them.

Lewis County, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	19	10	47%	13	100%	26 min
Flash flood warnings	0			0

Each office's whole area, 2019

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Buffalo, NY: tornado warnings	2	0	100%	0
NWS Buffalo, NY: severe thunderstorm warnings	106	65	39%	173	79%	20 min
NWS Buffalo, NY: flash flood warnings	17	10	41%	32	91%	53 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 6, 2:41 PM EST	Winter Weather Advisory	BUF	43 hr
Jan 8, 2:31 PM EST	Winter Storm Watch	BUF	13 hr
Jan 8, 2:31 PM EST	Winter Storm Warning	BUF	48 hr
Jan 10, 12:51 PM EST	Wind Chill Advisory	BUF	21 hr
Jan 15, 2:12 PM EST	Winter Weather Advisory	BUF	20 hr
Jan 16, 11:57 AM EST	Special Weather Statement	BUF	63 min
Jan 16, 2:13 PM EST	Winter Storm Watch	BUF	37 hr
Jan 18, 3:23 AM EST	Wind Chill Watch	BUF	48 hr
Jan 18, 3:23 AM EST	Winter Storm Warning	BUF	58 hr
Jan 20, 12:46 AM EST	Mesoscale Discussion	SPC	4 hr
Jan 20, 3:28 AM EST	Wind Chill Warning	BUF	52 hr
Jan 22, 1:10 PM EST	Winter Weather Advisory	BUF	29 hr
Jan 23, 6:08 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 23, 2:15 PM EST	Winter Storm Watch	BUF	23 hr
Jan 24, 12:57 PM EST	Winter Storm Warning	BUF	48 hr
Jan 25, 10:19 AM EST	Mesoscale Discussion	SPC	5 hr
Jan 25, 1:57 PM EST	Special Weather Statement	BUF	108 min
Jan 25, 4:04 PM EST	Special Weather Statement	BUF	116 min
Jan 26, 2:38 PM EST	Winter Weather Advisory	BUF	37 hr
Jan 27, 9:27 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 27, 1:58 PM EST	Winter Storm Watch	BUF	24 hr
Jan 28, 2:24 PM EST	Wind Chill Watch	BUF	23 hr
Jan 28, 2:24 PM EST	Winter Storm Warning	BUF	4 days
Jan 29, 1:42 PM EST	Wind Chill Warning	BUF	47 hr
Jan 30, 12:12 PM EST	Blizzard Warning	BUF	13 hr
Jan 30, 12:12 PM EST	Winter Storm Warning	BUF	43 hr
Jan 30, 1:02 PM EST	Special Weather Statement	BUF	88 min
Jan 30, 4:31 PM EST	Special Weather Statement	BUF	104 min
Jan 30, 6:09 PM EST	Special Weather Statement	BUF	111 min
Jan 31, 6:43 AM EST	Special Weather Statement	BUF	107 min
Jan 31, 8:54 AM EST	Special Weather Statement	BUF	3 hr
Jan 31, 10:53 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 31, 11:36 AM EST	Special Weather Statement	BUF	114 min
Jan 31, 12:48 PM EST	Wind Chill Advisory	BUF	22 hr
Jan 31, 1:21 PM EST	Special Weather Statement	BUF	3 hr
Jan 31, 6:39 PM EST	Mesoscale Discussion	SPC	5 hr
Jan 31, 8:19 PM EST	Special Weather Statement	BUF	86 min
Jan 31, 9:49 PM EST	Special Weather Statement	BUF	86 min
Jan 31, 11:48 PM EST	Special Weather Statement	BUF	87 min
Feb 1, 1:43 AM EST	Special Weather Statement	BUF	92 min
Feb 2, 11:44 PM EST	Winter Weather Advisory	BUF	10 hr
Feb 3, 9:38 AM EST	Winter Weather Advisory	BUF	18 hr
Feb 5, 1:44 PM EST	Winter Weather Advisory	BUF	56 hr
Feb 7, 10:11 AM EST	Wind Advisory	BUF	38 hr
Feb 8, 3:37 AM EST	Winter Weather Advisory	BUF	18 hr
Feb 10, 3:32 AM EST	Winter Storm Watch	BUF	24 hr
Feb 10, 5:50 PM EST	Winter Storm Warning	BUF	4 days
Feb 12, 3:35 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 15, 3:54 AM EST	Winter Weather Advisory	BUF	21 hr
Feb 19, 2:34 PM EST	Winter Weather Advisory	BUF	43 hr
Feb 20, 10:15 PM EST	Mesoscale Discussion	SPC	5 hr
Feb 21, 12:00 PM EST	High Wind Watch	BUF	15 hr
Feb 22, 3:19 AM EST	High Wind Warning	BUF	3 days
Feb 23, 3:35 AM EST	Winter Storm Watch	BUF	8 hr
Feb 23, 11:55 AM EST	Blizzard Warning	BUF	55 hr
Feb 24, 10:15 AM EST	Special Weather Statement	BUF	60 min
Feb 24, 11:14 AM EST	Special Weather Statement	BUF	76 min
Feb 25, 12:48 AM EST	Special Weather Statement	BUF	117 min
Feb 25, 4:43 AM EST	Special Weather Statement	BUF	107 min
Feb 25, 2:29 PM EST	Wind Advisory	BUF	4 hr
Feb 26, 10:55 AM EST	Winter Weather Advisory	BUF	38 hr
Mar 3, 1:33 PM EST	Winter Weather Advisory	BUF	3 days
Mar 6, 9:00 PM EST	Winter Weather Advisory	BUF	4 hr
Mar 7, 4:00 PM EST	High Wind Watch	BUF	35 hr
Mar 8, 11:58 AM EST	High Wind Warning	BUF	55 hr
Mar 9, 2:48 AM EST	Wind Advisory	BUF	10 hr
Mar 9, 12:54 PM EST	Winter Weather Advisory	BUF	23 hr
Mar 10, 1:05 PM EDT	Winter Weather Advisory	BUF	40 hr
Mar 14, 3:55 AM EDT	Wind Advisory	BUF	33 hr
Mar 20, 2:57 PM EDT	Winter Storm Watch	BUF	24 hr
Mar 21, 2:39 PM EDT	Winter Storm Warning	BUF	38 hr
Mar 31, 6:15 PM EDT	Winter Weather Advisory	BUF	13 hr
Apr 3, 3:55 AM EDT	Wind Advisory	BUF	18 hr
Apr 15, 12:33 AM EDT	Mesoscale Discussion	SPC	117 min
Apr 20, 4:32 AM EDT	Flood Watch	BUF	8 hr
May 10, 1:33 PM EDT	Severe Thunderstorm Warning	BUF	32 min
May 10, 1:55 PM EDT	Special Weather Statement	BUF	50 min
May 19, 12:51 PM EDT	Mesoscale Discussion	SPC	114 min
May 19, 1:51 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
May 19, 2:20 PM EDT	Severe Thunderstorm Warning	BUF	55 min
May 19, 4:07 PM EDT	Mesoscale Discussion	SPC	83 min
May 19, 5:19 PM EDT	Special Weather Statement	BUF	41 min
May 19, 8:12 PM EDT	Severe Thunderstorm Warning	BUF	48 min
May 23, 6:47 PM EDT	Mesoscale Discussion	SPC	118 min
May 23, 6:55 PM EDT	Severe Thunderstorm Warning	BUF	50 min
May 23, 7:27 PM EDT	Severe Thunderstorm Warning	BUF	47 min
May 25, 5:24 PM EDT	Severe Thunderstorm Warning	BUF	51 min
May 25, 8:08 PM EDT	Severe Thunderstorm Warning	BUF	82 min
Jun 1, 9:43 PM EDT	Special Weather Statement	BUF	47 min
Jun 3, 2:19 PM EDT	Frost Advisory	BUF	16 hr
Jun 26, 1:56 PM EDT	Mesoscale Discussion	SPC	94 min
Jun 26, 5:21 PM EDT	Severe Thunderstorm Warning	BUF	24 min
Jun 29, 5:58 PM EDT	Mesoscale Discussion	SPC	3 hr
Jun 29, 6:23 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 29, 7:13 PM EDT	Severe Thunderstorm Warning	BUF	62 min
Jun 29, 7:22 PM EDT	Tornado Warning	BUF	23 min
Jun 29, 8:40 PM EDT	Severe Thunderstorm Warning	BUF	65 min
Jun 29, 9:14 PM EDT	Severe Thunderstorm Warning	BUF	46 min
Jul 5, 5:09 PM EDT	Special Weather Statement	BUF	36 min
Jul 6, 11:55 AM EDT	Mesoscale Discussion	SPC	3 hr
Jul 11, 3:58 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 11, 5:27 PM EDT	Special Weather Statement	BUF	33 min
Jul 11, 6:25 PM EDT	Special Weather Statement	BUF	35 min
Jul 11, 7:09 PM EDT	Severe Thunderstorm Warning	BUF	44 min
Jul 11, 7:27 PM EDT	Special Weather Statement	BUF	63 min
Jul 11, 7:38 PM EDT	Severe Thunderstorm Warning	BUF	82 min
Jul 11, 7:43 PM EDT	Special Weather Statement	ALY	32 min
Jul 11, 8:25 PM EDT	Special Weather Statement	ALY	35 min
Jul 11, 8:29 PM EDT	Special Weather Statement	BUF	31 min
Jul 18, 1:54 PM EDT	Heat Advisory	BUF	52 hr
Jul 20, 6:24 PM EDT	Mesoscale Discussion	SPC	96 min
Jul 28, 1:45 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 29, 7:05 PM EDT	Special Weather Statement	BUF	25 min
Jul 30, 12:59 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 30, 1:22 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 30, 1:32 PM EDT	Special Weather Statement	BUF	43 min
Jul 30, 1:50 PM EDT	Severe Thunderstorm Warning	BUF	55 min
Aug 3, 2:29 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 6, 3:34 PM EDT	Severe Thunderstorm Warning	BUF	41 min
Aug 7, 1:26 PM EDT	Mesoscale Discussion	SPC	94 min
Aug 7, 5:49 PM EDT	Special Weather Statement	BUF	41 min
Aug 8, 11:58 AM EDT	Mesoscale Discussion	SPC	92 min
Aug 8, 12:37 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 16, 1:28 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 17, 1:27 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 18, 12:55 PM EDT	Mesoscale Discussion	SPC	65 min
Aug 18, 4:43 PM EDT	Severe Thunderstorm Warning	BUF	62 min
Aug 18, 5:54 PM EDT	Special Weather Statement	BUF	51 min
Aug 21, 6:54 AM EDT	Special Weather Statement	BUF	66 min
Aug 21, 6:58 AM EDT	Severe Thunderstorm Warning	BUF	77 min
Sep 4, 7:05 AM EDT	Special Weather Statement	BUF	55 min
Sep 4, 8:00 AM EDT	Special Weather Statement	BUF	45 min
Sep 4, 8:47 AM EDT	Special Weather Statement	BUF	28 min
Sep 13, 12:58 AM EDT	Wind Advisory	BUF	28 hr
Sep 23, 3:23 PM EDT	Mesoscale Discussion	SPC	97 min
Sep 26, 5:15 PM EDT	Special Weather Statement	BUF	60 min
Oct 1, 5:35 AM EDT	Special Weather Statement	BUF	55 min
Oct 1, 6:28 PM EDT	Special Weather Statement	BUF	62 min
Oct 3, 4:27 AM EDT	Freeze Watch	BUF	23 hr
Oct 4, 3:31 AM EDT	Freeze Warning	BUF	29 hr
Oct 26, 4:18 AM EDT	Wind Advisory	BUF	37 hr
Oct 30, 3:06 PM EDT	Wind Advisory	BUF	12 hr
Oct 31, 3:16 AM EDT	Flood Watch	BUF	34 hr
Oct 31, 3:16 AM EDT	High Wind Warning	BUF	34 hr
Oct 31, 4:46 PM EDT	Mesoscale Discussion	SPC	119 min
Oct 31, 6:15 PM EDT	Severe Thunderstorm Warning	BUF	60 min
Oct 31, 6:52 PM EDT	Areal Flood Warning	BUF	11 hr
Oct 31, 7:12 PM EDT	Severe Thunderstorm Warning	BUF	34 min
Oct 31, 8:41 PM EDT	River Flood Warning	BUF	43 hr
Oct 31, 8:41 PM EDT	River Flood Warning	BUF	28 hr
Nov 1, 3:22 PM EDT	Winter Weather Advisory	BUF	56 hr
Nov 1, 8:52 PM EDT	Areal Flood Warning	BUF	12 hr
Nov 2, 12:46 AM EDT	River Flood Warning	BUF	64 hr
Nov 10, 11:57 AM EST	Winter Storm Watch	BUF	8 hr
Nov 10, 7:56 PM EST	Winter Storm Warning	BUF	37 hr
Nov 12, 2:03 AM EST	Mesoscale Discussion	SPC	5 hr
Nov 18, 2:23 PM EST	Winter Weather Advisory	BUF	19 hr
Nov 26, 2:49 PM EST	Wind Advisory	BUF	34 hr
Nov 29, 2:13 AM EST	Winter Weather Advisory	BUF	12 hr
Nov 29, 2:46 PM EST	Winter Storm Watch	BUF	23 hr
Nov 29, 2:46 PM EST	Winter Weather Advisory	BUF	3 days
Dec 1, 11:26 AM EST	Winter Storm Warning	BUF	28 hr
Dec 3, 10:50 AM EST	Winter Weather Advisory	BUF	47 hr
Dec 8, 2:24 PM EST	Winter Weather Advisory	BUF	16 hr
Dec 10, 3:39 AM EST	Winter Weather Advisory	BUF	48 hr
Dec 11, 3:57 PM EST	Mesoscale Discussion	SPC	4 hr
Dec 11, 5:02 PM EST	Special Weather Statement	BUF	58 min
Dec 11, 5:59 PM EST	Special Weather Statement	BUF	91 min
Dec 11, 7:27 PM EST	Special Weather Statement	BUF	18 min
Dec 13, 2:47 PM EST	Winter Weather Advisory	BUF	46 hr
Dec 17, 2:35 PM EST	Lake Effect Snow Warning	BUF	37 hr
Dec 18, 6:30 AM EST	Special Weather Statement	BUF	60 min
Dec 18, 7:32 AM EST	Special Weather Statement	BUF	58 min
Dec 18, 8:35 AM EST	Special Weather Statement	BUF	55 min
Dec 18, 9:38 AM EST	Special Weather Statement	BUF	112 min
Dec 18, 12:13 PM EST	Special Weather Statement	BUF	47 min
Dec 18, 1:19 PM EST	Special Weather Statement	BUF	86 min
Dec 18, 3:42 PM EST	Wind Chill Advisory	BUF	17 hr
Dec 26, 12:16 PM EST	Winter Weather Advisory	BUF	10 hr
Dec 29, 3:48 AM EST	Winter Weather Advisory	BUF	33 hr
Dec 29, 7:28 PM EST	Mesoscale Discussion	SPC	4 hr
Dec 30, 2:45 PM EST	Winter Storm Watch	BUF	14 hr
Dec 31, 4:32 AM EST	Winter Storm Warning	BUF	35 hr
Dec 31, 1:47 PM EST	Mesoscale Discussion	SPC	3 hr
Dec 31, 3:44 PM EST	Snow Squall Warning	BUF	61 min
Dec 31, 4:45 PM EST	Snow Squall Warning	BUF	45 min

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	3
Mesoscale Discussion	32
Special Weather Statement	48
Flooding
Areal Flood Warning	2
River Flood Warning	3
Flood Watch	2
Winter
Blizzard Warning	2
Lake Effect Snow Warning	1
Snow Squall Warning	2
Winter Storm Warning	10
Winter Storm Watch	10
Winter Weather Advisory	26
Heat
Heat Advisory	1
Cold
Freeze Warning	1
Wind Chill Warning	2
Freeze Watch	1
Wind Chill Watch	2
Frost Advisory	1
Wind Chill Advisory	3
Wind and dust
High Wind Warning	3
High Wind Watch	2
Wind Advisory	9

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.