Alert archive / New York / Ulster County

Weather alerts in Ulster County, New York, 2020

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

Ulster County and its neighbors

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

Alerts: 199
Warnings: 51
Watches: 19
Advisories: 53
Busiest month: July43 alerts
Busiest day: June 28, 202012 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 3 tornado warnings covering Ulster County in 2020 had a tornado report inside them.

Ulster County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	3	1	67%	0
Severe thunderstorm warnings	25	18	28%	30	90%	23 min
Flash flood warnings	2	1	50%	3	100%	61 min

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Albany, NY: tornado warnings	20	6	70%	17	65%	21 min
NWS Albany, NY: severe thunderstorm warnings	137	86	37%	514	88%	24 min
NWS Albany, NY: flash flood warnings	7	3	57%	22	95%	43 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 8, 6:37 AM EST	Mesoscale Discussion	SPC	6 hr
Jan 11, 1:24 PM EST	Wind Advisory	ALY	26 hr
Jan 12, 6:02 AM EST	Special Weather Statement	ALY	43 min
Jan 15, 2:57 PM EST	Wind Advisory	ALY	28 hr
Jan 17, 3:46 AM EST	Winter Weather Advisory	ALY	45 hr
Jan 24, 4:20 PM EST	Winter Weather Advisory	ALY	32 hr
Feb 5, 3:24 AM EST	Winter Weather Advisory	ALY	66 hr
Feb 6, 3:17 PM EST	Wind Advisory	ALY	30 hr
Feb 9, 2:52 PM EST	Winter Weather Advisory	ALY	21 hr
Feb 12, 4:40 AM EST	Winter Weather Advisory	ALY	32 hr
Feb 18, 1:09 PM EST	Special Weather Statement	ALY	51 min
Feb 27, 3:35 AM EST	Wind Advisory	ALY	20 hr
Mar 22, 3:28 AM EDT	Winter Storm Watch	ALY	11 hr
Mar 22, 2:14 PM EDT	Winter Storm Warning	ALY	35 hr
Apr 4, 6:14 AM EDT	Areal Flood Warning	ALY	5 hr
Apr 9, 3:44 AM EDT	Wind Advisory	ALY	36 hr
Apr 9, 12:26 PM EDT	Special Weather Statement	ALY	64 min
Apr 11, 3:29 PM EDT	High Wind Watch	ALY	24 hr
Apr 12, 3:32 PM EDT	Wind Advisory	ALY	31 hr
Apr 13, 2:11 PM EDT	Special Weather Statement	ALY	49 min
Apr 13, 2:42 PM EDT	Mesoscale Discussion	SPC	93 min
Apr 13, 2:47 PM EDT	Special Weather Statement	ALY	43 min
Apr 13, 4:41 PM EDT	Special Weather Statement	ALY	49 min
Apr 13, 4:53 PM EDT	River Flood Warning	ALY	6 hr
Apr 17, 3:53 AM EDT	Winter Weather Advisory	ALY	30 hr
Apr 21, 12:57 PM EDT	Special Weather Statement	ALY	63 min
Apr 29, 2:48 PM EDT	Flood Watch	ALY	46 hr
Apr 30, 8:38 PM EDT	Special Weather Statement	ALY	52 min
May 1, 12:32 AM EDT	River Flood Warning	ALY	4 hr
May 1, 5:31 AM EDT	River Flood Warning	ALY	7 hr
May 2, 1:52 PM EDT	River Flood Warning	ALY	9 hr
May 5, 3:47 AM EDT	Frost Advisory	ALY	28 hr
May 9, 3:48 AM EDT	Freeze Warning	ALY	27 hr
May 9, 3:48 AM EDT	Wind Advisory	ALY	16 hr
May 9, 4:45 PM EDT	Special Weather Statement	ALY	30 min
May 9, 5:18 PM EDT	Special Weather Statement	ALY	42 min
May 10, 2:59 PM EDT	Freeze Watch	ALY	24 hr
May 11, 4:10 AM EDT	Freeze Warning	ALY	29 hr
May 11, 4:42 PM EDT	Special Weather Statement	ALY	33 min
May 11, 4:55 PM EDT	Special Weather Statement	ALY	35 min
May 12, 10:20 AM EDT	Freeze Warning	ALY	22 hr
May 13, 12:53 PM EDT	Freeze Warning	ALY	19 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, 4:58 PM EDT	Mesoscale Discussion	SPC	92 min
May 15, 6:20 PM EDT	Severe Thunderstorm Warning	ALY	25 min
May 15, 6:42 PM EDT	Severe Thunderstorm Warning	ALY	33 min
May 15, 6:59 PM EDT	Mesoscale Discussion	SPC	2 hr
May 15, 7:04 PM EDT	Special Weather Statement	ALY	41 min
May 15, 7:09 PM EDT	Severe Thunderstorm Warning	ALY	51 min
May 15, 7:21 PM EDT	Tornado Warning	ALY	24 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, 8:01 PM EDT	Mesoscale Discussion	SPC	119 min
Jun 11, 6:50 AM EDT	Special Weather Statement	ALY	55 min
Jun 20, 5:25 PM EDT	Special Weather Statement	ALY	35 min
Jun 20, 7:47 PM EDT	Special Weather Statement	ALY	28 min
Jun 28, 12:37 PM EDT	Mesoscale Discussion	SPC	113 min
Jun 28, 12:42 PM EDT	Special Weather Statement	ALY	48 min
Jun 28, 1:06 PM EDT	Severe Thunderstorm Warning	ALY	39 min
Jun 28, 1:32 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 28, 3:03 PM EDT	Special Weather Statement	ALY	27 min
Jun 28, 3:04 PM EDT	Severe Thunderstorm Warning	ALY	40 min
Jun 28, 3:32 PM EDT	Special Weather Statement	ALY	28 min
Jun 28, 3:43 PM EDT	Special Weather Statement	ALY	32 min
Jun 28, 3:44 PM EDT	Areal Flood Advisory	ALY	85 min
Jun 28, 3:47 PM EDT	Special Weather Statement	ALY	28 min
Jun 28, 4:08 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 28, 4:13 PM EDT	Special Weather Statement	ALY	32 min
Jun 29, 3:41 PM EDT	Special Weather Statement	ALY	34 min
Jun 29, 3:52 PM EDT	Severe Thunderstorm Warning	ALY	53 min
Jun 29, 4:59 PM EDT	Special Weather Statement	ALY	31 min
Jun 29, 5:22 PM EDT	Special Weather Statement	ALY	38 min
Jun 29, 5:47 PM EDT	Special Weather Statement	ALY	28 min
Jun 29, 5:51 PM EDT	Special Weather Statement	ALY	24 min
Jun 29, 6:10 PM EDT	Special Weather Statement	ALY	35 min
Jun 29, 6:13 PM EDT	Special Weather Statement	ALY	32 min
Jul 2, 6:30 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 3, 3:28 PM EDT	Special Weather Statement	ALY	47 min
Jul 3, 3:49 PM EDT	Severe Thunderstorm Warning	ALY	41 min
Jul 3, 4:22 PM EDT	Severe Thunderstorm Warning	ALY	53 min
Jul 6, 4:09 PM EDT	Special Weather Statement	ALY	36 min
Jul 6, 6:15 PM EDT	Special Weather Statement	ALY	45 min
Jul 6, 6:50 PM EDT	Special Weather Statement	ALY	40 min
Jul 6, 7:12 PM EDT	Severe Thunderstorm Warning	ALY	48 min
Jul 6, 7:18 PM EDT	Special Weather Statement	ALY	42 min
Jul 8, 4:07 AM EDT	Heat Advisory	ALY	40 hr
Jul 8, 11:44 AM EDT	Areal Flood Advisory	ALY	3 hr
Jul 8, 12:35 PM EDT	Areal Flood Advisory	ALY	3 hr
Jul 8, 12:43 PM EDT	Areal Flood Advisory	ALY	3 hr
Jul 9, 3:58 PM EDT	Flash Flood Watch	ALY	36 hr
Jul 11, 3:54 AM EDT	Heat Advisory	ALY	15 hr
Jul 11, 3:59 PM EDT	Special Weather Statement	ALY	31 min
Jul 11, 4:45 PM EDT	Areal Flood Advisory	ALY	101 min
Jul 11, 4:48 PM EDT	Special Weather Statement	ALY	27 min
Jul 11, 6:56 PM EDT	Severe Thunderstorm Warning	ALY	64 min
Jul 18, 3:51 AM EDT	Heat Advisory	ALY	63 hr
Jul 19, 5:52 PM EDT	Mesoscale Discussion	SPC	83 min
Jul 19, 7:29 PM EDT	Special Weather Statement	ALY	46 min
Jul 19, 8:08 PM EDT	Severe Thunderstorm Warning	ALY	67 min
Jul 22, 10:01 AM EDT	Heat Advisory	ALY	9 hr
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, 4:28 PM EDT	Severe Thunderstorm Warning	ALY	34 min
Jul 22, 4:44 PM EDT	Special Weather Statement	ALY	31 min
Jul 22, 5:24 PM EDT	Special Weather Statement	ALY	36 min
Jul 22, 5:39 PM EDT	Severe Thunderstorm Warning	ALY	51 min
Jul 22, 6:26 PM EDT	Special Weather Statement	ALY	34 min
Jul 23, 12:05 PM EDT	Mesoscale Discussion	SPC	115 min
Jul 23, 1:19 PM EDT	Heat Advisory	ALY	5 hr
Jul 23, 2:49 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 23, 4:28 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 23, 6:48 PM EDT	Mesoscale Discussion	SPC	57 min
Jul 23, 7:47 PM EDT	Special Weather Statement	ALY	28 min
Jul 23, 7:58 PM EDT	Areal Flood Advisory	ALY	103 min
Jul 26, 2:59 PM EDT	Heat Advisory	ALY	29 hr
Jul 28, 4:14 AM EDT	Heat Advisory	ALY	13 hr
Jul 30, 1:20 PM EDT	Mesoscale Discussion	SPC	115 min
Jul 30, 3:10 PM EDT	Special Weather Statement	ALY	35 min
Jul 30, 8:17 PM EDT	Special Weather Statement	ALY	28 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, 3:26 AM EDT	Flash Flood Watch	ALY	42 hr
Aug 3, 3:15 PM EDT	Wind Advisory	ALY	30 hr
Aug 4, 12:43 PM EDT	Tornado Watch	SPC	6 hr
Aug 4, 2:33 PM EDT	Areal Flood Advisory	ALY	3 hr
Aug 4, 3:45 PM EDT	Flash Flood Warning	ALY	3 hr
Aug 9, 3:17 PM EDT	Heat Advisory	ALY	53 hr
Aug 10, 3:58 PM EDT	Severe Thunderstorm Warning	ALY	62 min
Aug 10, 5:20 PM EDT	Flash Flood Warning	ALY	110 min
Aug 10, 5:38 PM EDT	Severe Thunderstorm Warning	ALY	52 min
Aug 10, 6:53 PM EDT	Areal Flood Advisory	ALY	2 hr
Aug 11, 3:02 AM EDT	Heat Advisory	ALY	17 hr
Aug 11, 10:33 PM EDT	Special Weather Statement	ALY	42 min
Aug 12, 3:10 AM EDT	Heat Advisory	ALY	16 hr
Aug 24, 1:42 PM EDT	Special Weather Statement	ALY	48 min
Aug 24, 2:37 PM EDT	Areal Flood Advisory	ALY	113 min
Aug 25, 3:12 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 25, 3:16 PM EDT	Special Weather Statement	ALY	29 min
Aug 25, 3:47 PM EDT	Special Weather Statement	ALY	43 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, 1:22 PM EDT	Tornado Watch	SPC	7 hr
Aug 27, 1:50 PM EDT	Severe Thunderstorm Warning	ALY	40 min
Aug 27, 2:05 PM EDT	Tornado Warning	ALY	40 min
Aug 27, 2:31 PM EDT	Severe Thunderstorm Warning	ALY	44 min
Aug 27, 2:56 PM EDT	Tornado Warning	ALY	21 min
Aug 27, 3:01 PM EDT	Areal Flood Advisory	ALY	113 min
Aug 27, 3:40 PM EDT	Severe Thunderstorm Warning	ALY	32 min
Aug 27, 4:19 PM EDT	Areal Flood Advisory	ALY	116 min
Aug 27, 5:03 PM EDT	Special Weather Statement	ALY	57 min
Aug 29, 1:36 PM EDT	Mesoscale Discussion	SPC	114 min
Aug 29, 6:45 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 29, 7:01 PM EDT	Severe Thunderstorm Warning	ALY	44 min
Aug 29, 7:13 PM EDT	Severe Thunderstorm Watch	SPC	3 hr
Aug 29, 8:09 PM EDT	Severe Thunderstorm Warning	ALY	66 min
Sep 3, 1:00 AM EDT	Areal Flood Advisory	ALY	3 hr
Sep 18, 3:34 AM EDT	Frost Advisory	ALY	28 hr
Sep 19, 3:11 PM EDT	Frost Advisory	ALY	17 hr
Sep 20, 3:02 PM EDT	Frost Advisory	ALY	17 hr
Sep 20, 3:02 PM EDT	Freeze Warning	ALY	17 hr
Sep 21, 3:03 PM EDT	Frost Advisory	ALY	17 hr
Sep 30, 3:11 AM EDT	Areal Flood Advisory	ALY	3 hr
Sep 30, 3:21 AM EDT	Areal Flood Advisory	ALY	3 hr
Oct 6, 3:18 PM EDT	Wind Advisory	ALY	31 hr
Oct 7, 3:56 PM EDT	Severe Thunderstorm Warning	ALY	34 min
Oct 7, 4:27 PM EDT	Severe Thunderstorm Warning	ALY	33 min
Oct 7, 4:47 PM EDT	Severe Thunderstorm Warning	ALY	43 min
Oct 17, 3:25 AM EDT	Frost Advisory	ALY	30 hr
Nov 1, 4:05 PM EST	Wind Advisory	ALY	27 hr
Nov 1, 5:42 PM EST	Special Weather Statement	ALY	48 min
Nov 15, 3:33 PM EST	Mesoscale Discussion	SPC	2 hr
Nov 15, 7:14 PM EST	Severe Thunderstorm Warning	ALY	61 min
Nov 15, 7:32 PM EST	Severe Thunderstorm Watch	SPC	5 hr
Nov 15, 8:18 PM EST	Severe Thunderstorm Warning	ALY	57 min
Nov 30, 1:52 PM EST	Areal Flood Advisory	ALY	5 hr
Nov 30, 4:51 PM EST	Special Weather Statement	ALY	39 min
Nov 30, 5:16 PM EST	Special Weather Statement	ALY	29 min
Dec 14, 3:40 PM EST	Winter Storm Watch	ALY	24 hr
Dec 15, 3:54 PM EST	Winter Storm Warning	ALY	45 hr
Dec 16, 6:48 PM EST	Mesoscale Discussion	SPC	5 hr
Dec 16, 10:12 PM EST	Mesoscale Discussion	SPC	6 hr
Dec 22, 3:06 PM EST	Flood Watch	ALY	3 days
Dec 23, 3:18 PM EST	High Wind Warning	ALY	43 hr
Dec 24, 3:44 AM EST	Wind Advisory	ALY	30 hr
Dec 24, 1:07 PM EST	River Flood Warning	ALY	33 hr
Dec 24, 1:07 PM EST	River Flood Warning	ALY	29 hr
Dec 24, 1:07 PM EST	River Flood Warning	ALY	29 hr
Dec 24, 10:35 PM EST	Areal Flood Advisory	ALY	6 hr
Dec 24, 10:58 PM EST	Areal Flood Warning	ALY	8 hr
Dec 25, 4:40 AM EST	River Flood Warning	ALY	8 hr
Dec 25, 5:51 AM EST	Areal Flood Advisory	ALY	4 hr
Dec 25, 7:10 AM EST	Areal Flood Warning	ALY	3 hr
Dec 25, 9:52 AM EST	Areal Flood Warning	ALY	3 hr
Dec 25, 11:12 AM EST	Areal Flood Advisory	ALY	2 hr
Dec 25, 12:52 PM EST	Areal Flood Warning	ALY	3 hr
Dec 30, 3:24 AM EST	Winter Weather Advisory	ALY	24 hr
Dec 30, 1:20 PM EST	Winter Weather Advisory	ALY	15 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	25
Tornado Warning	3
Severe Thunderstorm Watch	7
Tornado Watch	4
Mesoscale Discussion	25
Special Weather Statement	51
Flooding
Areal Flood Warning	5
Flash Flood Warning	2
River Flood Warning	8
Flash Flood Watch	2
Flood Watch	2
Areal Flood Advisory	18
Winter
Winter Storm Warning	2
Winter Storm Watch	2
Winter Weather Advisory	8
Heat
Heat Advisory	10
Cold
Freeze Warning	5
Freeze Watch	1
Frost Advisory	6
Wind and dust
High Wind Warning	1
High Wind Watch	1
Wind Advisory	11

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.