Alert archive / New York / Delaware County

Weather alerts in Delaware County, New York, 2020

185 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Delaware County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts: 185
Warnings: 66
Watches: 16
Advisories: 27
Busiest month: August43 alerts
Busiest day: August 27, 202013 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 3 tornado warnings covering Delaware County in 2020 had a tornado report inside them.

Delaware County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	0	100%	0
Severe thunderstorm warnings	38	28	26%	29	79%	25 min
Flash flood warnings	8	3	63%	6	83%	148 min

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Binghamton, NY: tornado warnings	6	0	100%	0
NWS Binghamton, NY: severe thunderstorm warnings	136	92	32%	361	76%	22 min
NWS Binghamton, NY: flash flood warnings	31	17	45%	39	82%	94 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
Dec 31, 7:00 PM EST	Snow Squall Warning	BGM	49 min
Jan 8, 6:37 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 8, 3:51 PM EST	Special Weather Statement	BGM	39 min
Jan 8, 4:34 PM EST	Special Weather Statement	BGM	56 min
Jan 8, 5:31 PM EST	Special Weather Statement	BGM	59 min
Jan 8, 8:24 PM EST	Special Weather Statement	BGM	51 min
Jan 11, 1:36 PM EST	Wind Advisory	BGM	23 hr
Jan 15, 2:36 PM EST	Wind Advisory	BGM	28 hr
Jan 17, 3:10 PM EST	Winter Weather Advisory	BGM	38 hr
Jan 24, 3:11 PM EST	Winter Weather Advisory	BGM	23 hr
Feb 5, 3:52 AM EST	Winter Weather Advisory	BGM	38 hr
Feb 6, 3:21 PM EST	Winter Weather Advisory	BGM	27 hr
Feb 7, 11:51 AM EST	Special Weather Statement	BGM	84 min
Feb 7, 1:18 PM EST	Special Weather Statement	BGM	42 min
Feb 9, 2:59 PM EST	Winter Weather Advisory	BGM	19 hr
Feb 11, 8:37 AM EST	Dense Fog Advisory	BGM	4 hr
Feb 11, 2:47 PM EST	Winter Weather Advisory	BGM	45 hr
Feb 13, 10:51 PM EST	Special Weather Statement	BGM	39 min
Feb 26, 3:25 PM EST	Wind Advisory	BGM	34 hr
Feb 29, 7:27 AM EST	Special Weather Statement	BGM	78 min
Feb 29, 8:40 AM EST	Special Weather Statement	BGM	80 min
Mar 3, 8:45 PM EST	Special Weather Statement	BGM	60 min
Mar 13, 12:22 PM EDT	Special Weather Statement	BGM	53 min
Mar 20, 4:18 PM EDT	Special Weather Statement	BGM	57 min
Mar 22, 4:14 AM EDT	Winter Storm Watch	BGM	10 hr
Mar 22, 1:44 PM EDT	Winter Storm Warning	BGM	32 hr
Mar 29, 6:55 PM EDT	Special Weather Statement	BGM	50 min
Apr 9, 3:55 AM EDT	Wind Advisory	BGM	11 hr
Apr 12, 2:04 PM EDT	Wind Advisory	BGM	32 hr
Apr 13, 2:42 PM EDT	Mesoscale Discussion	SPC	93 min
Apr 13, 3:51 PM EDT	Special Weather Statement	BGM	54 min
Apr 13, 8:14 PM EDT	River Flood Warning	BGM	6 hr
Apr 16, 7:40 PM EDT	Special Weather Statement	BGM	35 min
Apr 17, 3:34 AM EDT	Winter Weather Advisory	BGM	30 hr
Apr 17, 6:55 PM EDT	Mesoscale Discussion	SPC	4 hr
Apr 21, 12:37 PM EDT	Special Weather Statement	BGM	53 min
Apr 26, 6:33 PM EDT	Winter Weather Advisory	BGM	9 hr
Apr 29, 3:07 AM EDT	Flood Watch	BGM	49 hr
May 9, 3:46 AM EDT	Wind Advisory	BGM	16 hr
May 9, 4:40 PM EDT	Special Weather Statement	BGM	65 min
May 10, 2:29 PM EDT	Freeze Watch	BGM	12 hr
May 11, 2:48 AM EDT	Freeze Warning	BGM	30 hr
May 11, 2:19 PM EDT	Special Weather Statement	BGM	41 min
May 12, 10:08 AM EDT	Freeze Warning	BGM	23 hr
May 13, 10:23 AM EDT	Freeze Warning	BGM	22 hr
May 15, 2:59 PM EDT	Mesoscale Discussion	SPC	91 min
May 15, 3:32 PM EDT	Tornado Watch	SPC	6 hr
May 15, 4:17 PM EDT	Severe Thunderstorm Warning	BGM	36 min
May 15, 4:58 PM EDT	Mesoscale Discussion	SPC	92 min
May 15, 5:17 PM EDT	Severe Thunderstorm Warning	BGM	43 min
May 15, 5:38 PM EDT	Tornado Warning	BGM	37 min
May 15, 5:52 PM EDT	Severe Thunderstorm Warning	BGM	33 min
May 29, 12:27 PM EDT	Mesoscale Discussion	SPC	63 min
May 29, 2:25 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
May 29, 3:01 PM EDT	Severe Thunderstorm Warning	BGM	44 min
May 29, 3:41 PM EDT	Severe Thunderstorm Warning	BGM	64 min
May 29, 4:16 PM EDT	Severe Thunderstorm Warning	BGM	29 min
May 29, 5:24 PM EDT	Severe Thunderstorm Warning	BGM	51 min
May 29, 6:01 PM EDT	Areal Flood Advisory	BGM	99 min
May 29, 6:18 PM EDT	Special Weather Statement	BGM	27 min
May 29, 8:01 PM EDT	Mesoscale Discussion	SPC	119 min
Jun 10, 1:39 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 10, 4:15 PM EDT	Special Weather Statement	BGM	45 min
Jun 11, 5:02 AM EDT	Special Weather Statement	BGM	43 min
Jun 11, 5:30 AM EDT	Severe Thunderstorm Warning	BGM	30 min
Jun 11, 5:55 AM EDT	Special Weather Statement	BGM	35 min
Jun 11, 6:55 AM EDT	Areal Flood Advisory	BGM	113 min
Jun 28, 12:37 PM EDT	Mesoscale Discussion	SPC	113 min
Jun 28, 1:32 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 28, 1:42 PM EDT	Special Weather Statement	BGM	63 min
Jun 28, 2:03 PM EDT	Severe Thunderstorm Warning	BGM	57 min
Jun 28, 3:05 PM EDT	Severe Thunderstorm Warning	BGM	55 min
Jul 8, 3:57 PM EDT	Severe Thunderstorm Warning	BGM	18 min
Jul 8, 4:09 PM EDT	Severe Thunderstorm Warning	BGM	36 min
Jul 8, 4:14 PM EDT	Special Weather Statement	BGM	31 min
Jul 8, 4:34 PM EDT	Severe Thunderstorm Warning	BGM	26 min
Jul 8, 4:44 PM EDT	Special Weather Statement	BGM	31 min
Jul 8, 5:11 PM EDT	Special Weather Statement	BGM	34 min
Jul 10, 3:25 AM EDT	Flash Flood Watch	BGM	22 hr
Jul 11, 1:59 PM EDT	Special Weather Statement	BGM	31 min
Jul 11, 2:06 PM EDT	Special Weather Statement	BGM	39 min
Jul 11, 2:06 PM EDT	Mesoscale Discussion	SPC	84 min
Jul 11, 3:03 PM EDT	Special Weather Statement	BGM	27 min
Jul 11, 4:54 PM EDT	Special Weather Statement	BGM	66 min
Jul 19, 3:40 PM EDT	Special Weather Statement	BGM	50 min
Jul 19, 5:36 PM EDT	Severe Thunderstorm Warning	BGM	39 min
Jul 19, 5:52 PM EDT	Mesoscale Discussion	SPC	83 min
Jul 19, 6:09 PM EDT	Special Weather Statement	BGM	51 min
Jul 19, 6:29 PM EDT	Severe Thunderstorm Warning	BGM	46 min
Jul 19, 6:46 PM EDT	Severe Thunderstorm Warning	BGM	44 min
Jul 19, 6:59 PM EDT	Special Weather Statement	BGM	31 min
Jul 22, 1:45 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 22, 2:57 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 22, 4:08 PM EDT	Special Weather Statement	BGM	37 min
Jul 22, 4:26 PM EDT	Severe Thunderstorm Warning	BGM	45 min
Jul 22, 4:39 PM EDT	Severe Thunderstorm Warning	BGM	33 min
Jul 23, 12:05 PM EDT	Mesoscale Discussion	SPC	115 min
Jul 23, 2:49 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 23, 3:56 PM EDT	Severe Thunderstorm Warning	BGM	64 min
Jul 23, 4:02 PM EDT	Special Weather Statement	BGM	58 min
Jul 23, 4:28 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 27, 8:30 PM EDT	Special Weather Statement	BGM	45 min
Jul 27, 8:55 PM EDT	Severe Thunderstorm Warning	BGM	35 min
Jul 27, 9:20 PM EDT	Severe Thunderstorm Warning	BGM	40 min
Jul 30, 1:20 PM EDT	Mesoscale Discussion	SPC	115 min
Aug 2, 2:00 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 2, 3:10 PM EDT	Tornado Watch	SPC	7 hr
Aug 2, 6:45 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 3, 4:05 AM EDT	Flash Flood Watch	BGM	41 hr
Aug 4, 2:16 PM EDT	Flash Flood Warning	BGM	4 hr
Aug 4, 3:18 PM EDT	Flash Flood Warning	BGM	3 hr
Aug 4, 4:06 PM EDT	Flash Flood Warning	BGM	2 hr
Aug 4, 5:32 PM EDT	River Flood Warning	BGM	5 hr
Aug 7, 4:40 AM EDT	Areal Flood Advisory	BGM	3 hr
Aug 7, 5:46 AM EDT	Special Weather Statement	BGM	44 min
Aug 7, 7:27 AM EDT	Flash Flood Warning	BGM	68 min
Aug 11, 7:33 PM EDT	Severe Thunderstorm Warning	BGM	57 min
Aug 11, 8:28 PM EDT	Severe Thunderstorm Warning	BGM	62 min
Aug 11, 9:02 PM EDT	Areal Flood Advisory	BGM	3 hr
Aug 11, 9:29 PM EDT	Special Weather Statement	BGM	61 min
Aug 11, 9:47 PM EDT	Flash Flood Warning	BGM	2 hr
Aug 11, 10:28 PM EDT	Areal Flood Advisory	BGM	3 hr
Aug 17, 10:20 PM EDT	Special Weather Statement	BGM	40 min
Aug 25, 6:14 AM EDT	Special Weather Statement	BGM	46 min
Aug 25, 12:02 PM EDT	Mesoscale Discussion	SPC	118 min
Aug 25, 1:21 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 25, 2:15 PM EDT	Severe Thunderstorm Warning	BGM	45 min
Aug 25, 2:29 PM EDT	Severe Thunderstorm Warning	BGM	61 min
Aug 25, 2:57 PM EDT	Severe Thunderstorm Warning	BGM	33 min
Aug 27, 9:06 AM EDT	Severe Thunderstorm Warning	BGM	54 min
Aug 27, 9:41 AM EDT	Mesoscale Discussion	SPC	94 min
Aug 27, 12:38 PM EDT	Mesoscale Discussion	SPC	3 hr
Aug 27, 1:12 PM EDT	Tornado Warning	BGM	33 min
Aug 27, 1:22 PM EDT	Tornado Watch	SPC	7 hr
Aug 27, 1:42 PM EDT	Tornado Warning	BGM	33 min
Aug 27, 2:26 PM EDT	Severe Thunderstorm Warning	BGM	49 min
Aug 27, 2:59 PM EDT	Severe Thunderstorm Warning	BGM	46 min
Aug 27, 3:10 PM EDT	Severe Thunderstorm Warning	BGM	65 min
Aug 27, 3:46 PM EDT	Severe Thunderstorm Warning	BGM	59 min
Aug 27, 4:56 PM EDT	Severe Thunderstorm Warning	BGM	64 min
Aug 27, 5:23 PM EDT	Severe Thunderstorm Warning	BGM	37 min
Aug 27, 5:50 PM EDT	Severe Thunderstorm Warning	BGM	55 min
Aug 29, 1:36 PM EDT	Mesoscale Discussion	SPC	114 min
Aug 29, 2:59 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Aug 29, 5:47 PM EDT	Special Weather Statement	BGM	43 min
Aug 29, 5:59 PM EDT	Severe Thunderstorm Warning	BGM	31 min
Aug 29, 6:29 PM EDT	Severe Thunderstorm Warning	BGM	46 min
Aug 29, 7:14 PM EDT	Special Weather Statement	BGM	46 min
Sep 14, 3:25 AM EDT	Frost Advisory	BGM	29 hr
Sep 18, 3:12 AM EDT	Frost Advisory	BGM	29 hr
Sep 19, 3:04 PM EDT	Frost Advisory	BGM	18 hr
Sep 20, 2:41 PM EDT	Freeze Warning	BGM	18 hr
Oct 6, 2:45 PM EDT	Wind Advisory	BGM	29 hr
Oct 7, 3:28 PM EDT	Severe Thunderstorm Warning	BGM	47 min
Oct 7, 4:14 PM EDT	Special Weather Statement	BGM	46 min
Oct 7, 5:14 PM EDT	Severe Thunderstorm Warning	BGM	32 min
Nov 1, 3:08 PM EST	Wind Advisory	BGM	28 hr
Nov 1, 4:13 PM EST	Special Weather Statement	BGM	62 min
Nov 1, 5:06 PM EST	Special Weather Statement	BGM	54 min
Nov 15, 3:33 PM EST	Mesoscale Discussion	SPC	2 hr
Nov 15, 6:27 PM EST	Mesoscale Discussion	SPC	3 hr
Nov 15, 6:40 PM EST	Special Weather Statement	BGM	65 min
Dec 14, 3:42 AM EST	Winter Storm Watch	BGM	48 hr
Dec 15, 3:53 AM EST	Winter Storm Warning	BGM	54 hr
Dec 16, 6:48 PM EST	Mesoscale Discussion	SPC	5 hr
Dec 16, 10:12 PM EST	Mesoscale Discussion	SPC	6 hr
Dec 17, 4:33 AM EST	Mesoscale Discussion	SPC	6 hr
Dec 22, 2:59 PM EST	Flood Watch	BGM	69 hr
Dec 24, 3:57 AM EST	Wind Advisory	BGM	27 hr
Dec 24, 11:30 AM EST	River Flood Warning	BGM	37 hr
Dec 24, 11:30 AM EST	River Flood Warning	BGM	62 hr
Dec 24, 11:30 AM EST	River Flood Warning	BGM	57 hr
Dec 24, 11:30 AM EST	River Flood Warning	BGM	55 hr
Dec 24, 11:52 PM EST	Flash Flood Warning	BGM	6 hr
Dec 25, 12:00 AM EST	Areal Flood Warning	BGM	6 hr
Dec 25, 12:54 AM EST	Flash Flood Warning	BGM	6 hr
Dec 25, 2:18 AM EST	Flash Flood Warning	BGM	6 hr
Dec 25, 6:01 AM EST	Areal Flood Warning	BGM	6 hr
Dec 25, 9:54 AM EST	Areal Flood Warning	BGM	12 hr
Dec 25, 10:21 AM EST	River Flood Warning	BGM	21 hr
Dec 28, 7:22 AM EST	Special Weather Statement	BGM	53 min
Dec 29, 9:05 AM EST	Special Weather Statement	BGM	55 min
Dec 29, 10:01 AM EST	Special Weather Statement	BGM	59 min
Dec 29, 10:58 AM EST	Special Weather Statement	BGM	77 min
Dec 30, 3:20 AM EST	Winter Weather Advisory	BGM	27 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	38
Tornado Warning	3
Severe Thunderstorm Watch	6
Tornado Watch	3
Mesoscale Discussion	26
Special Weather Statement	50
Flooding
Areal Flood Warning	3
Flash Flood Warning	8
River Flood Warning	7
Flash Flood Watch	2
Flood Watch	2
Areal Flood Advisory	5
Winter
Snow Squall Warning	1
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	9
Cold
Freeze Warning	4
Freeze Watch	1
Frost Advisory	3
Wind and dust
Wind Advisory	9
Fog and smoke
Dense Fog Advisory	1

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2019 2021

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.