Alert archive / Maryland / Baltimore County

Weather alerts in Baltimore County, Maryland, 2016

187 weather alerts in 2016, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Baltimore County and its neighbors

Each county as a circle sized by its count in 2016. Tap one for its archive.

Alerts: 187
Warnings: 56
Watches: 34
Advisories: 60
Busiest month: April29 alerts
Busiest day: June 21, 20169 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 Baltimore County in 2016 had a tornado report inside them.

Baltimore County, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	29	20	31%	29	86%	23 min
Flash flood warnings	5	2	60%	4	100%	75 min

Each office's whole area, 2016

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Baltimore/Washington: tornado warnings	14	1	93%	2	50%	8 min
NWS Baltimore/Washington: severe thunderstorm warnings	305	212	30%	851	81%	20 min
NWS Baltimore/Washington: flash flood warnings	45	24	47%	61	89%	88 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 9, 10:33 PM EST	Coastal Flood Advisory	LWX	25 hr
Jan 10, 3:29 AM EST	Wind Advisory	LWX	15 hr
Jan 12, 3:31 AM EST	Wind Advisory	LWX	20 hr
Jan 17, 3:44 AM EST	Wind Chill Advisory	LWX	56 hr
Jan 20, 10:13 AM EST	Blizzard Watch	LWX	26 hr
Jan 21, 12:09 PM EST	Blizzard Warning	LWX	60 hr
Jan 22, 11:05 AM EST	High Wind Warning	LWX	31 hr
Jan 22, 9:56 PM EST	Mesoscale Discussion	SPC	5 hr
Jan 23, 4:20 AM EST	Mesoscale Discussion	SPC	5 hr
Jan 23, 8:51 AM EST	Mesoscale Discussion	SPC	4 hr
Jan 23, 12:44 PM EST	Mesoscale Discussion	SPC	6 hr
Jan 23, 6:40 PM EST	Mesoscale Discussion	SPC	4 hr
Jan 25, 4:49 AM EST	Coastal Flood Advisory	LWX	19 hr
Jan 26, 1:29 AM EST	Freezing Rain Advisory	LWX	10 hr
Feb 2, 10:39 AM EST	Flood Watch	LWX	40 hr
Feb 3, 3:30 AM EST	Coastal Flood Advisory	LWX	16 hr
Feb 3, 8:13 PM EST	Dense Fog Advisory	LWX	10 hr
Feb 4, 2:15 PM EST	Winter Weather Advisory	LWX	20 hr
Feb 8, 3:46 AM EST	Winter Storm Watch	LWX	8 hr
Feb 8, 12:10 PM EST	Winter Storm Warning	LWX	15 hr
Feb 8, 12:10 PM EST	Winter Weather Advisory	LWX	33 hr
Feb 8, 7:07 PM EST	Coastal Flood Advisory	LWX	29 hr
Feb 12, 11:37 AM EST	Winter Weather Advisory	LWX	27 hr
Feb 12, 1:12 PM EST	Wind Chill Advisory	LWX	43 hr
Feb 12, 1:13 PM EST	Wind Advisory	LWX	23 hr
Feb 14, 3:44 AM EST	Winter Storm Warning	LWX	56 hr
Feb 14, 2:13 PM EST	Winter Weather Advisory	LWX	41 hr
Feb 15, 1:46 PM EST	Mesoscale Discussion	SPC	5 hr
Feb 15, 3:06 PM EST	Flood Watch	LWX	24 hr
Feb 16, 8:47 AM EST	Coastal Flood Advisory	LWX	4 hr
Feb 16, 10:08 AM EST	Areal Flood Warning	LWX	4 hr
Feb 23, 3:21 PM EST	Flood Watch	LWX	33 hr
Feb 24, 2:04 AM EST	Coastal Flood Advisory	LWX	35 hr
Feb 24, 3:06 PM EST	Mesoscale Discussion	SPC	54 min
Feb 24, 3:20 PM EST	Tornado Watch	SPC	8 hr
Feb 24, 4:46 PM EST	Mesoscale Discussion	SPC	89 min
Feb 24, 5:46 PM EST	Severe Thunderstorm Warning	LWX	59 min
Feb 24, 5:59 PM EST	Severe Thunderstorm Warning	LWX	61 min
Feb 24, 6:39 PM EST	Areal Flood Warning	LWX	9 hr
Feb 24, 6:39 PM EST	Severe Thunderstorm Warning	LWX	36 min
Feb 24, 7:59 PM EST	Coastal Flood Warning	LWX	5 hr
Feb 24, 8:44 PM EST	Coastal Flood Advisory	LWX	14 hr
Mar 3, 3:31 AM EST	Winter Weather Advisory	LWX	29 hr
Mar 23, 9:26 PM EDT	Fire Weather Watch	LWX	7 hr
Mar 28, 3:57 AM EDT	Wind Advisory	LWX	17 hr
Apr 1, 1:46 PM EDT	Mesoscale Discussion	SPC	119 min
Apr 1, 2:29 PM EDT	Freeze Watch	LWX	14 hr
Apr 1, 2:29 PM EDT	High Wind Watch	LWX	14 hr
Apr 1, 4:49 PM EDT	Severe Thunderstorm Warning	LWX	14 min
Apr 2, 4:10 AM EDT	Freeze Warning	LWX	29 hr
Apr 2, 4:10 AM EDT	High Wind Warning	LWX	28 hr
Apr 2, 4:10 AM EDT	Wind Advisory	LWX	26 hr
Apr 2, 9:10 PM EDT	Special Weather Statement	LWX	2 hr
Apr 3, 5:49 AM EDT	Wind Advisory	LWX	5 hr
Apr 3, 2:39 PM EDT	Freeze Watch	LWX	25 hr
Apr 4, 4:04 AM EDT	Freeze Warning	LWX	30 hr
Apr 4, 4:43 AM EDT	Freeze Watch	LWX	23 hr
Apr 5, 4:09 AM EDT	Freeze Warning	LWX	29 hr
Apr 6, 7:05 PM EDT	Coastal Flood Advisory	LWX	15 hr
Apr 7, 10:44 AM EDT	Severe Thunderstorm Warning	LWX	61 min
Apr 7, 5:04 PM EDT	Severe Thunderstorm Warning	LWX	41 min
Apr 8, 4:08 AM EDT	Freeze Watch	LWX	23 hr
Apr 8, 4:08 AM EDT	Freeze Warning	LWX	24 hr
Apr 9, 3:30 AM EDT	Freeze Warning	LWX	31 hr
Apr 11, 3:25 AM EDT	Coastal Flood Advisory	LWX	11 hr
Apr 12, 1:46 PM EDT	Frost Advisory	LWX	19 hr
Apr 13, 1:26 PM EDT	Frost Advisory	LWX	20 hr
Apr 14, 1:27 PM EDT	Frost Advisory	LWX	20 hr
Apr 18, 5:26 PM EDT	Fire Weather Watch	LWX	10 hr
Apr 19, 3:17 AM EDT	Red Flag Warning	LWX	17 hr
Apr 25, 5:32 AM EDT	Coastal Flood Advisory	LWX	8 hr
Apr 26, 1:19 PM EDT	Mesoscale Discussion	SPC	86 min
Apr 26, 1:54 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Apr 28, 3:14 AM EDT	Coastal Flood Advisory	LWX	11 hr
May 2, 5:42 AM EDT	Dense Fog Advisory	LWX	2 hr
May 4, 7:50 PM EDT	Coastal Flood Advisory	LWX	4 days
May 6, 6:30 PM EDT	Coastal Flood Advisory	LWX	17 hr
May 29, 5:44 PM EDT	Flash Flood Watch	LWX	8 hr
Jun 5, 1:14 PM EDT	Mesoscale Discussion	SPC	91 min
Jun 5, 3:12 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 5, 3:13 PM EDT	Severe Thunderstorm Warning	LWX	48 min
Jun 5, 3:52 PM EDT	Severe Thunderstorm Warning	LWX	38 min
Jun 5, 4:22 PM EDT	Severe Thunderstorm Warning	LWX	53 min
Jun 8, 10:28 AM EDT	Severe Thunderstorm Warning	LWX	62 min
Jun 8, 10:56 AM EDT	Severe Thunderstorm Warning	LWX	34 min
Jun 16, 4:04 AM EDT	Flash Flood Watch	LWX	23 hr
Jun 16, 1:58 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jun 16, 6:54 PM EDT	Mesoscale Discussion	SPC	96 min
Jun 21, 12:00 PM EDT	Mesoscale Discussion	SPC	90 min
Jun 21, 1:01 PM EDT	Severe Thunderstorm Warning	LWX	31 min
Jun 21, 1:06 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Jun 21, 1:19 PM EDT	Severe Thunderstorm Warning	LWX	56 min
Jun 21, 1:34 PM EDT	Tornado Warning	LWX	26 min
Jun 21, 2:05 PM EDT	Flash Flood Warning	LWX	4 hr
Jun 21, 5:17 PM EDT	Severe Thunderstorm Warning	LWX	43 min
Jun 21, 6:06 PM EDT	Flash Flood Warning	LWX	3 hr
Jun 21, 6:30 PM EDT	Mesoscale Discussion	SPC	90 min
Jun 24, 12:57 PM EDT	Mesoscale Discussion	SPC	63 min
Jun 28, 3:49 PM EDT	Mesoscale Discussion	SPC	56 min
Jun 28, 4:09 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 28, 5:18 PM EDT	Severe Thunderstorm Warning	LWX	42 min
Jun 28, 5:49 PM EDT	Severe Thunderstorm Warning	LWX	33 min
Jun 28, 7:16 PM EDT	Mesoscale Discussion	SPC	59 min
Jul 1, 12:51 PM EDT	Mesoscale Discussion	SPC	114 min
Jul 1, 1:56 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jul 1, 5:43 PM EDT	Mesoscale Discussion	SPC	92 min
Jul 14, 1:52 AM EDT	Heat Advisory	LWX	17 hr
Jul 16, 5:15 PM EDT	Severe Thunderstorm Warning	LWX	45 min
Jul 16, 5:33 PM EDT	Flash Flood Warning	LWX	3 hr
Jul 16, 5:58 PM EDT	Severe Thunderstorm Warning	LWX	47 min
Jul 16, 6:00 PM EDT	Severe Thunderstorm Warning	LWX	45 min
Jul 18, 11:40 AM EDT	Mesoscale Discussion	SPC	95 min
Jul 18, 1:42 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 18, 3:09 PM EDT	Mesoscale Discussion	SPC	66 min
Jul 18, 3:37 PM EDT	Areal Flood Warning	LWX	6 hr
Jul 18, 3:38 PM EDT	Severe Thunderstorm Warning	LWX	52 min
Jul 23, 3:45 AM EDT	Heat Advisory	LWX	16 hr
Jul 23, 2:34 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 23, 5:42 PM EDT	Severe Thunderstorm Warning	LWX	63 min
Jul 24, 2:42 PM EDT	Heat Advisory	LWX	29 hr
Jul 25, 3:05 PM EDT	Mesoscale Discussion	SPC	115 min
Jul 25, 3:30 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 25, 5:02 PM EDT	Mesoscale Discussion	SPC	88 min
Jul 25, 7:06 PM EDT	Mesoscale Discussion	SPC	84 min
Jul 28, 4:45 AM EDT	Flash Flood Watch	LWX	17 hr
Jul 28, 12:58 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 1:27 PM EDT	Severe Thunderstorm Watch	SPC	11 hr
Jul 28, 2:58 PM EDT	Severe Thunderstorm Warning	LWX	47 min
Jul 28, 4:10 PM EDT	Mesoscale Discussion	SPC	95 min
Jul 30, 12:11 PM EDT	Mesoscale Discussion	SPC	64 min
Jul 30, 7:18 PM EDT	Flash Flood Warning Emergency	LWX	9 hr
Jul 30, 9:01 PM EDT	Severe Thunderstorm Warning	LWX	29 min
Aug 1, 2:55 PM EDT	Mesoscale Discussion	SPC	95 min
Aug 1, 4:38 PM EDT	Severe Thunderstorm Warning	LWX	33 min
Aug 6, 12:54 PM EDT	Mesoscale Discussion	SPC	3 hr
Aug 11, 3:32 AM EDT	Heat Advisory	LWX	16 hr
Aug 11, 7:22 PM EDT	Excessive Heat Watch	LWX	24 hr
Aug 11, 7:22 PM EDT	Heat Advisory	LWX	24 hr
Aug 12, 7:32 PM EDT	Excessive Heat Watch	LWX	21 hr
Aug 12, 7:32 PM EDT	Excessive Heat Warning	LWX	25 hr
Aug 13, 4:37 PM EDT	Excessive Heat Warning	LWX	26 hr
Aug 13, 4:37 PM EDT	Heat Advisory	LWX	26 hr
Aug 14, 7:54 PM EDT	Flash Flood Warning	LWX	3 hr
Aug 14, 7:57 PM EDT	Severe Thunderstorm Warning	LWX	48 min
Aug 14, 9:03 PM EDT	Severe Thunderstorm Warning	LWX	42 min
Aug 15, 3:44 AM EDT	Heat Advisory	LWX	13 hr
Aug 15, 3:19 PM EDT	Heat Advisory	LWX	27 hr
Aug 16, 1:40 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 16, 3:20 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Aug 16, 3:55 PM EDT	Severe Thunderstorm Warning	LWX	50 min
Aug 16, 4:44 PM EDT	Severe Thunderstorm Warning	LWX	46 min
Aug 16, 4:55 PM EDT	Mesoscale Discussion	SPC	95 min
Aug 17, 11:55 AM EDT	Flash Flood Watch	LWX	11 hr
Aug 17, 4:26 PM EDT	Mesoscale Discussion	SPC	64 min
Aug 17, 9:46 PM EDT	Mesoscale Discussion	SPC	89 min
Aug 31, 11:27 PM EDT	Severe Thunderstorm Warning	LWX	37 min
Sep 3, 2:21 PM EDT	Coastal Flood Advisory	LWX	22 hr
Sep 6, 10:08 PM EDT	Coastal Flood Advisory	LWX	28 hr
Sep 27, 5:30 PM EDT	Flash Flood Watch	LWX	58 hr
Sep 28, 9:00 PM EDT	Coastal Flood Advisory	LWX	4 days
Sep 29, 8:04 AM EDT	Areal Flood Warning	LWX	6 hr
Oct 4, 1:42 PM EDT	Coastal Flood Advisory	LWX	62 hr
Oct 10, 1:28 PM EDT	Frost Advisory	LWX	20 hr
Oct 13, 6:11 AM EDT	Dense Fog Advisory	LWX	3 hr
Oct 14, 2:31 PM EDT	Frost Advisory	LWX	14 hr
Oct 21, 2:56 PM EDT	Wind Advisory	LWX	26 hr
Oct 24, 4:44 PM EDT	Freeze Watch	LWX	21 hr
Oct 25, 1:19 PM EDT	Frost Advisory	LWX	20 hr
Oct 25, 1:19 PM EDT	Freeze Warning	LWX	20 hr
Oct 30, 3:55 PM EDT	Mesoscale Discussion	SPC	2 hr
Nov 6, 2:35 PM EST	Frost Advisory	LWX	18 hr
Nov 7, 2:22 PM EST	Frost Advisory	LWX	18 hr
Nov 11, 12:23 PM EST	Frost Advisory	LWX	21 hr
Nov 11, 12:23 PM EST	Freeze Watch	LWX	15 hr
Nov 12, 3:19 AM EST	Freeze Warning	LWX	30 hr
Nov 19, 3:09 AM EST	Wind Advisory	LWX	17 hr
Nov 19, 8:10 PM EST	Wind Advisory	LWX	44 hr
Nov 20, 3:46 AM EST	Fire Weather Watch	LWX	23 hr
Nov 29, 1:02 PM EST	Coastal Flood Advisory	LWX	8 hr
Nov 29, 6:11 PM EST	Dense Fog Advisory	LWX	15 hr
Nov 30, 9:02 AM EST	Dense Fog Advisory	LWX	58 min
Dec 11, 3:31 AM EST	Freezing Rain Advisory	LWX	26 hr
Dec 15, 4:04 AM EST	Wind Advisory	LWX	8 hr
Dec 15, 2:51 PM EST	Winter Storm Watch	LWX	23 hr
Dec 16, 3:48 AM EST	Winter Weather Advisory	LWX	33 hr
Dec 17, 4:21 AM EST	Mesoscale Discussion	SPC	5 hr
Dec 17, 8:31 AM EST	Winter Storm Warning	LWX	4 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	29
Tornado Warning	1
Severe Thunderstorm Watch	10
Tornado Watch	1
Mesoscale Discussion	36
Special Weather Statement	1
Flooding
Areal Flood Warning	4
Flash Flood Warning	5
Flash Flood Watch	5
Flood Watch	3
Winter
Blizzard Warning	1
Winter Storm Warning	3
Blizzard Watch	1
Winter Storm Watch	2
Freezing Rain Advisory	2
Winter Weather Advisory	6
Heat
Excessive Heat Warning	2
Excessive Heat Watch	2
Heat Advisory	8
Cold
Freeze Warning	7
Freeze Watch	6
Frost Advisory	9
Wind Chill Advisory	2
Wind and dust
High Wind Warning	2
High Wind Watch	1
Wind Advisory	10
Fire
Red Flag Warning	1
Fire Weather Watch	3
Fog and smoke
Dense Fog Advisory	5
Coast and beach
Coastal Flood Warning	1
Coastal Flood Advisory	18

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force now Tornadoes on record Forecast The radar archive 2015 2017

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.