Alert archive / Maryland / Worcester County

Weather alerts in Worcester County, Maryland, 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.

Worcester County and its neighbors

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

Alerts: 185
Warnings: 22
Watches: 19
Advisories: 50
Busiest month: August47 alerts
Busiest day: July 10, 20209 alerts

Over time

By month

Warning verification

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

4 of 6 tornado warnings covering Worcester County in 2020 had a tornado report inside them; 4 of 4 tornado reports fell inside a warning, on average 11 minutes after it went out.

Worcester County, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	6	4	33%	4	100%	11 min
Severe thunderstorm warnings	7	6	14%	5	80%	16 min
Flash flood warnings	3	2	33%	1	100%	147 min

Each office's whole area, 2020

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Wakefield, VA: tornado warnings	60	19	68%	39	72%	17 min
NWS Wakefield, VA: severe thunderstorm warnings	170	120	29%	237	91%	19 min
NWS Wakefield, VA: flash flood warnings	87	57	34%	118	92%	79 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 4, 7:20 PM EST	Special Weather Statement	AKQ	40 min
Jan 12, 2:23 AM EST	Special Weather Statement	AKQ	67 min
Jan 14, 6:57 AM EST	Special Weather Statement	AKQ	48 min
Feb 5, 3:45 PM EST	Flood Watch	AKQ	37 hr
Feb 6, 2:42 PM EST	Wind Advisory	AKQ	27 hr
Feb 7, 9:38 AM EST	Severe Thunderstorm Warning	AKQ	67 min
Feb 26, 1:08 AM EST	Dense Fog Advisory	AKQ	12 hr
Mar 6, 3:58 PM EST	Coastal Flood Statement	AKQ	16 hr
Mar 22, 3:06 AM EDT	High Surf Advisory	AKQ	41 hr
Mar 31, 5:05 AM EDT	Coastal Flood Advisory	AKQ	53 hr
Apr 3, 2:37 PM EDT	Coastal Flood Advisory	AKQ	33 hr
Apr 5, 3:30 AM EDT	Coastal Flood Advisory	AKQ	11 hr
Apr 7, 11:22 PM EDT	Special Weather Statement	AKQ	53 min
Apr 8, 4:30 PM EDT	Coastal Flood Statement	AKQ	10 hr
Apr 9, 11:09 AM EDT	Mesoscale Discussion	SPC	66 min
Apr 9, 1:52 PM EDT	Special Weather Statement	AKQ	38 min
Apr 9, 2:38 PM EDT	Special Weather Statement	AKQ	37 min
Apr 9, 3:45 PM EDT	Wind Advisory	AKQ	27 hr
Apr 9, 3:52 PM EDT	Coastal Flood Statement	AKQ	14 hr
Apr 11, 3:04 PM EDT	High Wind Watch	AKQ	21 hr
Apr 12, 12:29 PM EDT	High Wind Warning	AKQ	28 hr
Apr 12, 2:48 PM EDT	High Surf Advisory	AKQ	29 hr
Apr 16, 3:00 AM EDT	Freeze Watch	AKQ	12 hr
Apr 16, 3:12 PM EDT	Frost Advisory	AKQ	18 hr
Apr 16, 3:12 PM EDT	Freeze Warning	AKQ	18 hr
Apr 18, 9:31 PM EDT	Frost Advisory	AKQ	10 hr
Apr 21, 3:27 PM EDT	Special Weather Statement	AKQ	63 min
Apr 21, 3:46 PM EDT	Severe Thunderstorm Warning	AKQ	44 min
Apr 21, 4:44 PM EDT	Special Weather Statement	AKQ	31 min
Apr 29, 3:23 AM EDT	Flood Watch	AKQ	39 hr
Apr 30, 3:24 AM EDT	Wind Advisory	AKQ	15 hr
Apr 30, 3:27 AM EDT	High Surf Advisory	AKQ	28 hr
Apr 30, 5:32 PM EDT	Special Weather Statement	AKQ	58 min
May 1, 11:30 AM EDT	Special Weather Statement	AKQ	45 min
May 4, 12:44 AM EDT	Special Weather Statement	AKQ	46 min
May 8, 11:06 PM EDT	Special Weather Statement	AKQ	39 min
May 17, 3:43 PM EDT	Beach Hazards Statement	AKQ	5 days
May 17, 3:43 PM EDT	Rip Current Statement	AKQ	52 hr
May 18, 7:10 PM EDT	High Surf Advisory	AKQ	72 hr
May 19, 6:00 AM EDT	Coastal Flood Advisory	AKQ	16 hr
May 19, 9:40 PM EDT	Rip Current Statement	AKQ	70 hr
Jun 14, 8:36 PM EDT	Beach Hazards Statement	AKQ	47 hr
Jun 16, 8:33 PM EDT	Beach Hazards Statement	AKQ	41 hr
Jun 17, 5:49 PM EDT	Special Weather Statement	AKQ	41 min
Jun 25, 1:34 PM EDT	Special Weather Statement	AKQ	41 min
Jul 1, 1:46 PM EDT	Mesoscale Discussion	SPC	119 min
Jul 6, 12:33 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 6, 1:38 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jul 6, 4:33 PM EDT	Mesoscale Discussion	SPC	117 min
Jul 6, 6:25 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 6, 8:39 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 6, 8:58 PM EDT	Severe Thunderstorm Warning	AKQ	47 min
Jul 6, 9:45 PM EDT	Special Weather Statement	AKQ	45 min
Jul 7, 9:27 AM EDT	Special Weather Statement	AKQ	48 min
Jul 7, 1:17 PM EDT	Special Weather Statement	AKQ	43 min
Jul 7, 1:51 PM EDT	Areal Flood Advisory	AKQ	2 hr
Jul 9, 4:07 PM EDT	Flash Flood Watch	AKQ	20 hr
Jul 9, 4:45 PM EDT	Beach Hazards Statement	AKQ	27 hr
Jul 10, 4:28 AM EDT	Special Weather Statement	AKQ	32 min
Jul 10, 5:22 AM EDT	Areal Flood Advisory	AKQ	56 min
Jul 10, 5:35 AM EDT	Special Weather Statement	AKQ	55 min
Jul 10, 6:18 AM EDT	Flash Flood Warning	AKQ	6 hr
Jul 10, 6:34 AM EDT	Special Weather Statement	AKQ	56 min
Jul 10, 7:11 AM EDT	Areal Flood Advisory	AKQ	3 hr
Jul 10, 7:33 AM EDT	Special Weather Statement	AKQ	42 min
Jul 10, 8:03 AM EDT	Flash Flood Warning	AKQ	3 hr
Jul 10, 10:57 AM EDT	Areal Flood Warning	AKQ	4 hr
Jul 18, 3:09 PM EDT	Heat Advisory	AKQ	30 hr
Jul 19, 4:31 AM EDT	Dense Fog Advisory	AKQ	3 hr
Jul 19, 2:40 PM EDT	Excessive Heat Warning	AKQ	30 hr
Jul 19, 2:40 PM EDT	Heat Advisory	AKQ	30 hr
Jul 19, 3:00 PM EDT	Special Weather Statement	AKQ	30 min
Jul 20, 8:46 PM EDT	Heat Advisory	AKQ	70 hr
Jul 21, 2:35 PM EDT	Special Weather Statement	AKQ	25 min
Jul 22, 12:29 AM EDT	Special Weather Statement	AKQ	46 min
Jul 22, 12:45 AM EDT	Special Weather Statement	AKQ	45 min
Jul 22, 10:48 AM EDT	Mesoscale Discussion	SPC	117 min
Jul 22, 4:55 PM EDT	Mesoscale Discussion	SPC	95 min
Jul 22, 7:01 PM EDT	Mesoscale Discussion	SPC	119 min
Jul 24, 4:27 AM EDT	Special Weather Statement	AKQ	33 min
Jul 25, 2:57 PM EDT	Special Weather Statement	AKQ	33 min
Jul 26, 3:32 PM EDT	Heat Advisory	AKQ	52 hr
Jul 28, 8:12 PM EDT	Severe Thunderstorm Warning	AKQ	48 min
Jul 28, 8:38 PM EDT	Severe Thunderstorm Warning	AKQ	37 min
Jul 28, 9:55 PM EDT	Special Weather Statement	AKQ	50 min
Jul 31, 10:02 AM EDT	Special Weather Statement	AKQ	43 min
Aug 2, 5:44 PM EDT	Tropical Storm Watch	AKQ	5 hr
Aug 2, 10:51 PM EDT	Tropical Storm Warning	AKQ	43 hr
Aug 3, 1:42 PM EDT	Special Weather Statement	AKQ	48 min
Aug 3, 2:19 PM EDT	Special Weather Statement	AKQ	56 min
Aug 3, 7:34 PM EDT	Beach Hazards Statement	AKQ	24 hr
Aug 4, 1:41 AM EDT	Mesoscale Discussion	SPC	3 hr
Aug 4, 2:26 AM EDT	Tornado Watch	SPC	9 hr
Aug 4, 5:04 AM EDT	Tornado Warning	AKQ	26 min
Aug 4, 5:15 AM EDT	Mesoscale Discussion	SPC	3 hr
Aug 4, 6:55 AM EDT	Tornado Warning	AKQ	35 min
Aug 4, 7:04 AM EDT	Tornado Warning	AKQ	26 min
Aug 4, 7:20 AM EDT	Tornado Warning	AKQ	40 min
Aug 4, 7:28 AM EDT	Tornado Warning	AKQ	32 min
Aug 4, 7:53 AM EDT	Tornado Warning	AKQ	37 min
Aug 5, 1:12 PM EDT	Special Weather Statement	AKQ	18 min
Aug 5, 1:44 PM EDT	Special Weather Statement	AKQ	46 min
Aug 5, 6:12 PM EDT	Special Weather Statement	AKQ	48 min
Aug 6, 8:45 AM EDT	Special Weather Statement	AKQ	60 min
Aug 6, 9:48 AM EDT	Special Weather Statement	AKQ	42 min
Aug 6, 10:43 AM EDT	Flash Flood Watch	AKQ	15 hr
Aug 6, 2:06 PM EDT	Special Weather Statement	AKQ	39 min
Aug 7, 2:43 AM EDT	Flash Flood Watch	AKQ	19 hr
Aug 7, 11:46 PM EDT	Special Weather Statement	AKQ	44 min
Aug 8, 12:20 AM EDT	Areal Flood Advisory	AKQ	3 hr
Aug 8, 12:28 AM EDT	Special Weather Statement	AKQ	32 min
Aug 8, 12:49 AM EDT	Flash Flood Warning	AKQ	3 hr
Aug 13, 2:25 AM EDT	Flash Flood Watch	AKQ	17 hr
Aug 13, 12:33 PM EDT	Areal Flood Advisory	AKQ	3 hr
Aug 14, 8:32 AM EDT	Areal Flood Advisory	AKQ	104 min
Aug 15, 3:21 AM EDT	Flash Flood Watch	AKQ	33 hr
Aug 15, 4:02 PM EDT	Beach Hazards Statement	AKQ	28 hr
Aug 16, 2:58 PM EDT	Coastal Flood Statement	AKQ	14 hr
Aug 17, 4:04 AM EDT	Beach Hazards Statement	AKQ	16 hr
Aug 19, 8:34 AM EDT	Special Weather Statement	AKQ	41 min
Aug 19, 10:59 AM EDT	Special Weather Statement	AKQ	46 min
Aug 19, 11:18 AM EDT	Special Weather Statement	AKQ	42 min
Aug 19, 5:22 PM EDT	Special Weather Statement	AKQ	38 min
Aug 25, 3:34 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Aug 25, 7:07 PM EDT	Mesoscale Discussion	SPC	113 min
Aug 25, 9:19 PM EDT	Special Weather Statement	AKQ	26 min
Aug 25, 9:47 PM EDT	Severe Thunderstorm Warning	AKQ	43 min
Aug 25, 9:48 PM EDT	Special Weather Statement	AKQ	42 min
Aug 28, 7:50 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 29, 1:27 AM EDT	Severe Thunderstorm Warning	AKQ	48 min
Aug 29, 1:44 AM EDT	Areal Flood Advisory	AKQ	3 hr
Aug 29, 4:39 AM EDT	Areal Flood Advisory	AKQ	2 hr
Aug 29, 12:08 PM EDT	Mesoscale Discussion	SPC	3 hr
Sep 3, 3:06 PM EDT	Mesoscale Discussion	SPC	114 min
Sep 3, 3:42 PM EDT	Tornado Watch	SPC	6 hr
Sep 4, 12:46 AM EDT	Special Weather Statement	AKQ	44 min
Sep 4, 9:38 PM EDT	Special Weather Statement	AKQ	52 min
Sep 8, 9:41 PM EDT	Beach Hazards Statement	AKQ	46 hr
Sep 9, 2:26 PM EDT	Flash Flood Watch	AKQ	31 hr
Sep 10, 5:46 AM EDT	Special Weather Statement	AKQ	59 min
Sep 12, 6:51 PM EDT	Beach Hazards Statement	AKQ	4 days
Sep 17, 3:52 PM EDT	Beach Hazards Statement	AKQ	52 hr
Sep 17, 3:52 PM EDT	Coastal Flood Advisory	AKQ	5 days
Sep 17, 3:52 PM EDT	High Surf Advisory	AKQ	6 days
Sep 19, 9:07 PM EDT	Beach Hazards Statement	AKQ	4 days
Sep 21, 5:27 AM EDT	Coastal Flood Advisory	AKQ	17 hr
Sep 22, 5:17 AM EDT	Coastal Flood Statement	AKQ	13 hr
Sep 23, 5:12 AM EDT	Coastal Flood Statement	AKQ	13 hr
Sep 30, 1:04 AM EDT	Special Weather Statement	AKQ	41 min
Oct 12, 11:46 AM EDT	Coastal Flood Advisory	AKQ	13 hr
Oct 12, 2:23 PM EDT	High Surf Advisory	AKQ	7 hr
Oct 13, 6:11 AM EDT	Coastal Flood Statement	AKQ	13 hr
Oct 18, 3:04 AM EDT	Coastal Flood Statement	AKQ	16 hr
Oct 21, 12:37 AM EDT	Dense Fog Advisory	AKQ	9 hr
Oct 28, 3:27 PM EDT	Wind Advisory	AKQ	28 hr
Oct 28, 3:37 PM EDT	Flood Watch	AKQ	24 hr
Oct 29, 7:55 PM EDT	Coastal Flood Statement	AKQ	17 hr
Oct 30, 4:42 AM EDT	Areal Flood Advisory	AKQ	3 hr
Oct 30, 2:04 PM EDT	Frost Advisory	AKQ	19 hr
Oct 30, 2:35 PM EDT	Coastal Flood Statement	AKQ	10 hr
Nov 6, 1:29 AM EST	Dense Fog Advisory	AKQ	9 hr
Nov 6, 11:37 PM EST	Dense Fog Advisory	AKQ	10 hr
Nov 11, 10:30 AM EST	Flash Flood Watch	AKQ	31 hr
Nov 12, 6:08 AM EST	Areal Flood Advisory	AKQ	2 hr
Nov 12, 12:17 PM EST	Areal Flood Advisory	AKQ	3 hr
Nov 12, 2:52 PM EST	Areal Flood Advisory	AKQ	3 hr
Nov 15, 5:35 PM EST	Severe Thunderstorm Watch	SPC	5 hr
Nov 15, 9:47 PM EST	Special Weather Statement	AKQ	43 min
Nov 15, 10:33 PM EST	Special Weather Statement	AKQ	42 min
Nov 29, 3:21 PM EST	Wind Advisory	AKQ	27 hr
Nov 30, 5:10 AM EST	High Surf Advisory	AKQ	17 hr
Nov 30, 12:26 PM EST	Mesoscale Discussion	SPC	3 hr
Nov 30, 1:07 PM EST	Tornado Watch	SPC	6 hr
Nov 30, 3:02 PM EST	Mesoscale Discussion	SPC	88 min
Nov 30, 4:37 PM EST	Mesoscale Discussion	SPC	53 min
Nov 30, 5:00 PM EST	Special Weather Statement	AKQ	45 min
Dec 4, 11:39 AM EST	Wind Advisory	AKQ	27 hr
Dec 5, 3:35 AM EST	Areal Flood Advisory	AKQ	5 hr
Dec 15, 4:27 PM EST	Coastal Flood Advisory	AKQ	32 hr
Dec 16, 3:50 AM EST	High Surf Advisory	AKQ	25 hr
Dec 17, 5:23 AM EST	High Surf Advisory	AKQ	5 hr
Dec 23, 2:48 PM EST	Wind Advisory	AKQ	35 hr
Dec 23, 10:49 PM EST	High Surf Advisory	AKQ	37 hr
Dec 24, 7:44 PM EST	High Wind Warning	AKQ	6 hr
Dec 25, 12:56 AM EST	Special Weather Statement	AKQ	49 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	7
Tornado Warning	6
Severe Thunderstorm Watch	3
Tornado Watch	3
Mesoscale Discussion	18
Special Weather Statement	53
Flooding
Areal Flood Warning	1
Flash Flood Warning	3
Flash Flood Watch	7
Flood Watch	3
Areal Flood Advisory	13
Heat
Excessive Heat Warning	1
Heat Advisory	4
Cold
Freeze Warning	1
Freeze Watch	1
Frost Advisory	3
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	7
Fog and smoke
Dense Fog Advisory	5
Tropical
Tropical Storm Warning	1
Tropical Storm Watch	1
Coast and beach
Coastal Flood Advisory	8
High Surf Advisory	10
Beach Hazards Statement	11
Coastal Flood Statement	10
Rip Current Statement	2

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.