Weather alerts in Lewis County, New York, 2024

145 weather alerts in 2024, 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 2024. Tap one for its archive.

Alerts: 145
Warnings: 55
Watches: 19
Advisories: 17
Busiest month: July46 alerts
Busiest day: July 10, 202416 alerts

Over time

By month

Warning verification

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

2 of 3 tornado warnings covering Lewis County in 2024 had a tornado report inside them.

Lewis County, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	2	33%	0
Severe thunderstorm warnings	30	15	50%	16	100%	28 min
Flash flood warnings	3	2	33%	15	100%	106 min

Each office's whole area, 2024

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Buffalo, NY: tornado warnings	25	10	60%	15	73%	10 min
NWS Buffalo, NY: severe thunderstorm warnings	125	87	30%	320	82%	25 min
NWS Buffalo, NY: flash flood warnings	22	17	23%	52	100%	78 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 2, 9:29 PM EST	Winter Weather Advisory	BUF	31 hr
Jan 5, 1:52 PM EST	Winter Weather Advisory	BUF	50 hr
Jan 7, 3:31 AM EST	High Wind Watch	BUF	10 hr
Jan 7, 1:09 PM EST	High Wind Warning	BUF	61 hr
Jan 9, 1:22 PM EST	Winter Weather Advisory	BUF	7 hr
Jan 10, 3:09 AM EST	Lake Effect Snow Warning	BUF	43 hr
Jan 11, 3:42 AM EST	High Wind Watch	BUF	23 hr
Jan 11, 1:56 PM EST	Winter Storm Watch	BUF	23 hr
Jan 12, 3:10 AM EST	High Wind Warning	BUF	48 hr
Jan 12, 1:06 PM EST	Winter Storm Warning	BUF	72 hr
Jan 14, 3:49 PM EST	Mesoscale Discussion	SPC	4 hr
Jan 15, 2:06 AM EST	Winter Storm Watch	BUF	26 hr
Jan 16, 3:51 AM EST	Lake Effect Snow Warning	BUF	69 hr
Jan 17, 6:59 AM EST	Special Weather Statement	BUF	46 min
Jan 17, 7:07 PM EST	Special Weather Statement	BUF	83 min
Jan 17, 8:46 PM EST	Special Weather Statement	BUF	89 min
Jan 17, 10:35 PM EST	Special Weather Statement	BUF	85 min
Jan 18, 8:49 AM EST	Special Weather Statement	BUF	116 min
Jan 18, 5:26 PM EST	Special Weather Statement	BUF	79 min
Jan 18, 7:02 PM EST	Special Weather Statement	BUF	88 min
Jan 22, 2:20 PM EST	Winter Weather Advisory	BUF	65 hr
Feb 14, 2:59 PM EST	Winter Storm Watch	BUF	12 hr
Feb 15, 3:17 AM EST	Winter Storm Warning	BUF	34 hr
Feb 15, 6:13 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 17, 3:38 AM EST	Lake Effect Snow Warning	BUF	43 hr
Feb 17, 3:38 AM EST	Winter Weather Advisory	BUF	45 hr
Feb 18, 6:01 PM EST	Mesoscale Discussion	SPC	4 hr
Feb 27, 3:14 AM EST	High Wind Watch	BUF	24 hr
Feb 28, 3:32 AM EST	High Wind Warning	BUF	24 hr
Mar 8, 12:53 PM EST	Wind Advisory	BUF	33 hr
Mar 8, 1:57 PM EST	Winter Storm Watch	BUF	24 hr
Mar 9, 3:27 AM EST	Winter Storm Warning	BUF	53 hr
Mar 17, 2:32 PM EDT	Winter Weather Advisory	BUF	38 hr
Mar 19, 11:22 AM EDT	Winter Storm Warning	BUF	29 hr
Mar 21, 3:35 PM EDT	Winter Storm Watch	BUF	13 hr
Mar 22, 4:46 AM EDT	Winter Storm Warning	BUF	31 hr
Apr 1, 3:03 PM EDT	Winter Storm Watch	BUF	37 hr
Apr 3, 3:44 AM EDT	Wind Advisory	BUF	15 hr
Apr 3, 3:54 AM EDT	Winter Weather Advisory	BUF	40 hr
Apr 11, 4:45 AM EDT	Wind Advisory	BUF	24 hr
May 21, 5:53 PM EDT	Severe Thunderstorm Warning	BUF	52 min
May 21, 6:21 PM EDT	Severe Thunderstorm Warning	BUF	39 min
May 22, 3:00 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
May 22, 4:51 PM EDT	Severe Thunderstorm Warning	BUF	54 min
May 22, 4:52 PM EDT	Special Weather Statement	BUF	23 min
May 22, 5:40 PM EDT	Severe Thunderstorm Warning	BUF	65 min
May 22, 5:59 PM EDT	Special Weather Statement	BUF	31 min
May 22, 6:28 PM EDT	Severe Thunderstorm Warning	BUF	38 min
May 23, 2:50 AM EDT	Severe Thunderstorm Warning	BUF	40 min
May 27, 11:53 AM EDT	Mesoscale Discussion	SPC	2 hr
May 27, 1:42 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 27, 2:08 PM EDT	Special Weather Statement	BUF	37 min
May 27, 2:44 PM EDT	Severe Thunderstorm Warning	BUF	25 min
May 27, 2:54 PM EDT	Severe Thunderstorm Warning	BUF	25 min
May 27, 4:40 PM EDT	Mesoscale Discussion	SPC	95 min
May 27, 6:22 PM EDT	Special Weather Statement	BUF	68 min
May 27, 9:03 PM EDT	Special Weather Statement	BUF	57 min
Jun 6, 12:58 PM EDT	Mesoscale Discussion	SPC	92 min
Jun 13, 11:18 PM EDT	Severe Thunderstorm Warning	BUF	57 min
Jun 13, 11:39 PM EDT	Special Weather Statement	BUF	66 min
Jun 16, 2:55 PM EDT	Heat Advisory	BUF	4 days
Jun 18, 4:21 AM EDT	Special Weather Statement	BUF	54 min
Jun 18, 5:48 AM EDT	Special Weather Statement	BUF	57 min
Jun 18, 2:01 PM EDT	Mesoscale Discussion	SPC	89 min
Jun 20, 12:57 AM EDT	Special Weather Statement	BUF	48 min
Jun 20, 2:42 AM EDT	Severe Thunderstorm Warning	BUF	42 min
Jun 22, 9:48 PM EDT	Special Weather Statement	BUF	57 min
Jun 22, 11:08 PM EDT	Special Weather Statement	ALY	22 min
Jun 23, 2:23 AM EDT	Special Weather Statement	BUF	22 min
Jun 23, 12:01 PM EDT	Mesoscale Discussion	SPC	89 min
Jun 23, 2:49 PM EDT	Special Weather Statement	BUF	26 min
Jun 29, 11:58 PM EDT	Special Weather Statement	BUF	32 min
Jun 30, 4:23 AM EDT	Special Weather Statement	BUF	52 min
Jun 30, 5:13 AM EDT	Special Weather Statement	ALY	32 min
Jul 6, 12:44 AM EDT	Severe Thunderstorm Warning	BUF	46 min
Jul 6, 3:54 PM EDT	Special Weather Statement	BUF	51 min
Jul 10, 3:15 AM EDT	Flood Watch	BUF	19 hr
Jul 10, 10:30 AM EDT	Severe Thunderstorm Warning	BUF	60 min
Jul 10, 11:01 AM EDT	Severe Thunderstorm Warning	BUF	59 min
Jul 10, 11:27 AM EDT	Mesoscale Discussion	SPC	3 hr
Jul 10, 12:06 PM EDT	Tornado Watch	SPC	11 hr
Jul 10, 12:57 PM EDT	Severe Thunderstorm Warning	BUF	48 min
Jul 10, 1:15 PM EDT	Mesoscale Discussion	SPC	90 min
Jul 10, 1:33 PM EDT	Severe Thunderstorm Warning	BUF	57 min
Jul 10, 1:39 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	22 min
Jul 10, 2:18 PM EDT	Tornado Warning	BUF	42 min
Jul 10, 2:59 PM EDT	Severe Thunderstorm Warning	BUF	46 min
Jul 10, 3:06 PM EDT	Flash Flood Warning	BUF	7 hr
Jul 10, 4:05 PM EDT	Tornado Warning	BUF	40 min
Jul 10, 4:53 PM EDT	Mesoscale Discussion	SPC	97 min
Jul 10, 5:04 PM EDT	Severe Thunderstorm Warning	BUF	56 min
Jul 10, 6:17 PM EDT	Special Weather Statement	BUF	43 min
Jul 10, 10:06 PM EDT	Areal Flood Warning	BUF	17 hr
Jul 11, 6:38 AM EDT	Areal Flood Warning	BUF	29 hr
Jul 15, 12:21 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 15, 6:24 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	66 min
Jul 15, 7:20 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	55 min
Jul 15, 7:54 PM EDT	Mesoscale Discussion	SPC	96 min
Jul 16, 10:33 AM EDT	Mesoscale Discussion	SPC	117 min
Jul 16, 11:05 AM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 16, 1:22 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	53 min
Jul 16, 1:27 PM EDT	Mesoscale Discussion	SPC	93 min
Jul 16, 2:12 PM EDT	Severe Thunderstorm Warning Considerable damage threat	BUF	78 min
Jul 16, 3:27 PM EDT	Severe Thunderstorm Warning	BUF	37 min
Jul 16, 3:31 PM EDT	Flash Flood Warning	BUF	2 hr
Jul 24, 12:12 PM EDT	Special Weather Statement	BUF	48 min
Jul 24, 12:23 PM EDT	Severe Thunderstorm Warning	BUF	52 min
Jul 24, 3:14 PM EDT	Special Weather Statement	BUF	46 min
Jul 24, 3:24 PM EDT	Special Weather Statement	BUF	51 min
Jul 24, 3:28 PM EDT	Severe Thunderstorm Warning	BUF	62 min
Jul 24, 4:23 PM EDT	Special Weather Statement	BUF	52 min
Jul 24, 4:30 PM EDT	Severe Thunderstorm Warning	BUF	60 min
Jul 24, 5:02 PM EDT	Mesoscale Discussion	SPC	88 min
Jul 24, 5:09 PM EDT	Flash Flood Warning	BUF	3 hr
Jul 24, 5:15 PM EDT	Special Weather Statement	BUF	60 min
Jul 24, 5:26 PM EDT	Severe Thunderstorm Warning	BUF	64 min
Jul 30, 2:37 PM EDT	Special Weather Statement	BUF	53 min
Jul 30, 3:06 PM EDT	Mesoscale Discussion	SPC	114 min
Jul 30, 4:43 PM EDT	Special Weather Statement	BUF	47 min
Jul 30, 8:29 PM EDT	Special Weather Statement	BUF	31 min
Aug 8, 3:52 AM EDT	Flood Watch	BUF	37 hr
Aug 9, 1:43 PM EDT	Wind Advisory	BUF	5 hr
Aug 9, 1:52 PM EDT	Areal Flood Warning	BUF	8 hr
Aug 9, 3:00 PM EDT	Severe Thunderstorm Warning	BUF	60 min
Aug 9, 3:50 PM EDT	Severe Thunderstorm Warning	BUF	85 min
Aug 11, 8:17 PM EDT	Special Weather Statement	BUF	58 min
Aug 18, 7:00 PM EDT	Special Weather Statement	BUF	30 min
Aug 18, 7:50 PM EDT	Special Weather Statement	BUF	40 min
Aug 19, 8:01 AM EDT	Areal Flood Warning	BUF	5 hr
Aug 20, 3:36 AM EDT	Areal Flood Warning	BUF	24 hr
Sep 1, 1:54 PM EDT	Mesoscale Discussion	SPC	96 min
Sep 2, 4:06 AM EDT	Frost Advisory	BUF	29 hr
Sep 9, 4:41 PM EDT	Mesoscale Discussion	SPC	94 min
Sep 9, 5:02 PM EDT	Severe Thunderstorm Warning	BUF	58 min
Sep 9, 5:09 PM EDT	Tornado Warning	BUF	51 min
Oct 10, 4:33 AM EDT	Frost Advisory	BUF	28 hr
Nov 21, 3:45 AM EST	Winter Weather Advisory	BUF	32 hr
Nov 26, 3:59 AM EST	Winter Storm Watch	BUF	32 hr
Nov 27, 12:21 PM EST	Lake Effect Snow Warning	BUF	6 days
Dec 3, 3:15 AM EST	Winter Storm Watch	BUF	24 hr
Dec 4, 3:32 AM EST	Winter Storm Warning	BUF	4 days
Dec 9, 9:35 AM EST	Winter Weather Advisory	BUF	15 hr
Dec 9, 2:01 PM EST	Winter Storm Watch	BUF	23 hr
Dec 10, 12:31 PM EST	Lake Effect Snow Warning	BUF	3 days
Dec 23, 2:48 AM EST	Winter Weather Advisory	BUF	31 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	30
Tornado Warning	3
Severe Thunderstorm Watch	4
Tornado Watch	1
Mesoscale Discussion	18
Special Weather Statement	36
Flooding
Areal Flood Warning	5
Flash Flood Warning	3
Flood Watch	2
Winter
Lake Effect Snow Warning	5
Winter Storm Warning	6
Winter Storm Watch	9
Winter Weather Advisory	10
Heat
Heat Advisory	1
Cold
Frost Advisory	2
Wind and dust
High Wind Warning	3
High Wind Watch	3
Wind Advisory	4

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2023 2025

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.