Alert archive / Maryland / Caroline County

Weather alerts in Caroline County, Maryland, 2012

198 weather alerts in 2012, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Caroline County and its neighbors

Each county as a circle sized by its count in 2012. Tap one for its archive.

Alerts: 198
Warnings: 35
Watches: 23
Advisories: 49
Busiest month: July40 alerts
Busiest day: August 26, 201210 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 Caroline County in 2012 had a tornado report inside them.

Caroline County, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
Tornado warnings	1	0	100%	0
Severe thunderstorm warnings	20	13	35%	6	100%	31 min
Flash flood warnings	3	2	33%	1	100%	33 min

Each office's whole area, 2012

	Warnings	With a report	False alarm ratio	Reports	Inside a warning	Mean lead time
NWS Philadelphia/Mount Holly: tornado warnings	8	1	88%	3	33%	1 min
NWS Philadelphia/Mount Holly: severe thunderstorm warnings	238	159	33%	410	90%	28 min
NWS Philadelphia/Mount Holly: flash flood warnings	57	25	56%	49	73%	55 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 27, 9:34 AM EST	Special Weather Statement	PHI	56 min
Feb 11, 3:19 PM EST	Special Weather Statement	PHI	3 hr
Feb 11, 3:37 PM EST	Wind Advisory	PHI	12 hr
Feb 24, 3:40 AM EST	Wind Advisory	PHI	42 hr
Feb 24, 3:16 PM EST	Special Weather Statement	PHI	44 min
Feb 24, 3:29 PM EST	Severe Thunderstorm Warning	PHI	46 min
Feb 29, 7:45 PM EST	Special Weather Statement	PHI	2 hr
Mar 2, 5:14 PM EST	Special Weather Statement	PHI	91 min
Mar 9, 1:27 AM EST	Special Weather Statement	PHI	63 min
Mar 9, 2:28 AM EST	Special Weather Statement	PHI	62 min
Mar 17, 12:16 AM EDT	Dense Fog Advisory	PHI	11 hr
Mar 19, 5:52 PM EDT	Special Weather Statement	PHI	53 min
Mar 21, 8:02 PM EDT	Dense Fog Advisory	PHI	14 hr
Mar 25, 3:28 PM EDT	Freeze Watch	PHI	12 hr
Mar 26, 3:46 AM EDT	Freeze Warning	PHI	29 hr
Apr 1, 8:43 PM EDT	Coastal Flood Statement	PHI	6 hr
Apr 6, 3:10 PM EDT	Fire Weather Watch	PHI	13 hr
Apr 6, 7:56 PM EDT	Red Flag Warning	PHI	24 hr
Apr 7, 3:49 AM EDT	Fire Weather Watch	PHI	18 hr
Apr 7, 8:14 PM EDT	Red Flag Warning	PHI	24 hr
Apr 8, 4:07 AM EDT	Fire Weather Watch	PHI	16 hr
Apr 8, 8:01 PM EDT	Red Flag Warning	PHI	24 hr
Apr 9, 4:03 AM EDT	Wind Advisory	PHI	14 hr
Apr 9, 3:12 PM EDT	Fire Weather Watch	PHI	13 hr
Apr 9, 8:04 PM EDT	Red Flag Warning	PHI	24 hr
Apr 21, 8:41 PM EDT	Special Weather Statement	PHI	109 min
Apr 27, 3:18 PM EDT	Frost Advisory	PHI	17 hr
May 4, 1:02 AM EDT	Special Weather Statement	PHI	58 min
May 4, 1:26 PM EDT	Mesoscale Discussion	SPC	2 hr
May 4, 2:07 PM EDT	Special Weather Statement	PHI	38 min
May 7, 3:39 PM EDT	Coastal Flood Statement	PHI	18 hr
May 15, 6:40 AM EDT	Special Weather Statement	PHI	50 min
May 15, 7:30 AM EDT	Special Weather Statement	PHI	2 hr
May 23, 3:42 PM EDT	Special Weather Statement	PHI	63 min
May 23, 3:44 PM EDT	Special Weather Statement	AKQ	16 min
May 23, 4:40 PM EDT	Special Weather Statement	PHI	110 min
May 27, 10:10 PM EDT	Special Weather Statement	PHI	65 min
May 29, 9:35 PM EDT	Special Weather Statement	PHI	85 min
May 29, 10:55 PM EDT	Special Weather Statement	PHI	65 min
Jun 1, 6:20 AM EDT	Coastal Flood Advisory	PHI	24 hr
Jun 1, 1:50 PM EDT	Tornado Watch	SPC	7 hr
Jun 1, 3:49 PM EDT	Mesoscale Discussion	SPC	56 min
Jun 1, 6:54 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 1, 7:07 PM EDT	Special Weather Statement	PHI	53 min
Jun 1, 8:01 PM EDT	Tornado Watch	SPC	4 hr
Jun 1, 10:14 PM EDT	Special Weather Statement	PHI	61 min
Jun 3, 1:37 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 5, 3:44 AM EDT	Coastal Flood Advisory	PHI	31 hr
Jun 6, 10:51 AM EDT	Coastal Flood Advisory	PHI	23 hr
Jun 6, 3:38 PM EDT	Coastal Flood Statement	PHI	13 hr
Jun 12, 1:18 PM EDT	Coastal Flood Statement	PHI	6 hr
Jun 12, 7:23 PM EDT	Coastal Flood Advisory	PHI	8 hr
Jun 14, 9:40 PM EDT	Coastal Flood Advisory	PHI	5 hr
Jun 18, 12:33 AM EDT	Coastal Flood Advisory	PHI	6 hr
Jun 18, 3:26 PM EDT	Excessive Heat Warning	PHI	4 days
Jun 19, 3:32 PM EDT	Heat Advisory	PHI	3 days
Jun 22, 12:18 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 22, 2:12 PM EDT	Severe Thunderstorm Watch	SPC	7 hr
Jun 22, 4:10 PM EDT	Mesoscale Discussion	SPC	2 hr
Jun 22, 6:42 PM EDT	Mesoscale Discussion	SPC	63 min
Jun 25, 10:44 AM EDT	Mesoscale Discussion	SPC	61 min
Jun 28, 3:43 PM EDT	Heat Advisory	PHI	27 hr
Jun 29, 4:34 AM EDT	Severe Thunderstorm Watch	SPC	3 hr
Jun 29, 5:23 AM EDT	Severe Thunderstorm Warning	PHI	67 min
Jun 29, 10:09 PM EDT	Severe Thunderstorm Watch	SPC	4 hr
Jun 29, 10:51 PM EDT	Mesoscale Discussion	SPC	84 min
Jun 29, 11:03 PM EDT	Severe Thunderstorm Warning	PHI	72 min
Jun 30, 12:45 AM EDT	Special Weather Statement	PHI	60 min
Jun 30, 3:48 AM EDT	Heat Advisory	PHI	16 hr
Jun 30, 7:39 PM EDT	Mesoscale Discussion	SPC	3 hr
Jul 2, 4:13 AM EDT	Special Weather Statement	PHI	62 min
Jul 3, 3:28 PM EDT	Excessive Heat Warning	PHI	5 days
Jul 4, 3:39 AM EDT	Heat Advisory	PHI	15 hr
Jul 4, 6:33 PM EDT	Heat Advisory	PHI	25 hr
Jul 5, 4:28 AM EDT	Excessive Heat Watch	PHI	24 hr
Jul 5, 8:14 PM EDT	Severe Thunderstorm Warning	PHI	46 min
Jul 5, 8:43 PM EDT	Special Weather Statement	PHI	62 min
Jul 8, 12:47 PM EDT	Mesoscale Discussion	SPC	88 min
Jul 8, 1:44 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 8, 4:21 PM EDT	Mesoscale Discussion	SPC	54 min
Jul 8, 9:09 PM EDT	Special Weather Statement	PHI	66 min
Jul 8, 9:22 PM EDT	Severe Thunderstorm Warning	PHI	53 min
Jul 8, 10:13 PM EDT	Special Weather Statement	PHI	62 min
Jul 8, 10:15 PM EDT	Severe Thunderstorm Warning	PHI	25 min
Jul 9, 5:20 AM EDT	Special Weather Statement	PHI	3 hr
Jul 14, 9:39 AM EDT	Special Weather Statement	PHI	51 min
Jul 14, 10:04 AM EDT	Special Weather Statement	AKQ	41 min
Jul 14, 3:22 PM EDT	Special Weather Statement	PHI	83 min
Jul 14, 4:08 PM EDT	Special Weather Statement	PHI	82 min
Jul 17, 3:36 PM EDT	Heat Advisory	PHI	28 hr
Jul 18, 12:41 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 18, 3:44 PM EDT	Mesoscale Discussion	SPC	91 min
Jul 18, 6:06 PM EDT	Severe Thunderstorm Warning	PHI	39 min
Jul 18, 6:23 PM EDT	Severe Thunderstorm Warning	PHI	37 min
Jul 18, 6:26 PM EDT	Areal Flood Advisory	PHI	68 min
Jul 19, 6:53 PM EDT	Mesoscale Discussion	SPC	97 min
Jul 19, 10:58 PM EDT	Special Weather Statement	PHI	2 hr
Jul 24, 11:48 AM EDT	Mesoscale Discussion	SPC	87 min
Jul 24, 1:08 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 25, 3:09 PM EDT	Heat Advisory	PHI	51 hr
Jul 26, 3:08 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 26, 5:54 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Jul 26, 9:06 PM EDT	Mesoscale Discussion	SPC	84 min
Jul 28, 12:26 PM EDT	Mesoscale Discussion	SPC	2 hr
Jul 28, 1:36 PM EDT	Severe Thunderstorm Watch	SPC	8 hr
Jul 28, 4:18 PM EDT	Mesoscale Discussion	SPC	87 min
Jul 28, 7:22 PM EDT	Severe Thunderstorm Warning	PHI	53 min
Jul 28, 8:00 PM EDT	Mesoscale Discussion	SPC	30 min
Jul 28, 8:09 PM EDT	Severe Thunderstorm Warning	PHI	66 min
Jul 31, 5:04 PM EDT	Special Weather Statement	PHI	56 min
Aug 1, 1:43 PM EDT	Areal Flood Advisory	PHI	86 min
Aug 1, 1:55 PM EDT	Areal Flood Advisory	PHI	2 hr
Aug 2, 6:08 PM EDT	Special Weather Statement	PHI	52 min
Aug 2, 6:36 PM EDT	Areal Flood Advisory	PHI	2 hr
Aug 5, 2:49 PM EDT	Mesoscale Discussion	SPC	86 min
Aug 5, 3:36 PM EDT	Severe Thunderstorm Watch	SPC	5 hr
Aug 5, 5:10 PM EDT	Severe Thunderstorm Warning	PHI	80 min
Aug 5, 6:38 PM EDT	Mesoscale Discussion	SPC	2 hr
Aug 7, 8:01 PM EDT	Special Weather Statement	PHI	59 min
Aug 10, 8:21 AM EDT	Mesoscale Discussion	SPC	2 hr
Aug 10, 8:41 AM EDT	Special Weather Statement	PHI	94 min
Aug 10, 8:43 AM EDT	Special Weather Statement	PHI	92 min
Aug 10, 8:55 AM EDT	Severe Thunderstorm Warning	PHI	65 min
Aug 10, 9:08 AM EDT	Areal Flood Advisory	PHI	3 hr
Aug 10, 7:31 PM EDT	Mesoscale Discussion	SPC	119 min
Aug 11, 11:44 AM EDT	Special Weather Statement	PHI	61 min
Aug 11, 11:57 AM EDT	Special Weather Statement	PHI	63 min
Aug 11, 5:12 PM EDT	Special Weather Statement	PHI	63 min
Aug 14, 12:25 PM EDT	Special Weather Statement	AKQ	35 min
Aug 14, 2:28 PM EDT	Areal Flood Advisory	PHI	2 hr
Aug 15, 6:55 PM EDT	Severe Thunderstorm Warning	PHI	49 min
Aug 15, 7:36 PM EDT	Special Weather Statement	AKQ	24 min
Aug 17, 9:31 PM EDT	Special Weather Statement	PHI	89 min
Aug 17, 9:55 PM EDT	Severe Thunderstorm Warning	PHI	65 min
Aug 17, 10:55 PM EDT	Special Weather Statement	PHI	65 min
Aug 26, 7:43 AM EDT	Special Weather Statement	PHI	2 hr
Aug 26, 11:48 AM EDT	Special Weather Statement	PHI	117 min
Aug 26, 12:17 PM EDT	Areal Flood Advisory	PHI	118 min
Aug 26, 12:52 PM EDT	Mesoscale Discussion	SPC	83 min
Aug 26, 1:29 PM EDT	Flash Flood Warning	PHI	7 hr
Aug 26, 2:22 PM EDT	Severe Thunderstorm Warning	PHI	53 min
Aug 26, 5:36 PM EDT	Severe Thunderstorm Warning	PHI	39 min
Aug 26, 5:42 PM EDT	Tornado Warning	PHI	19 min
Aug 26, 6:15 PM EDT	Flash Flood Warning	PHI	4 hr
Aug 26, 7:39 PM EDT	Severe Thunderstorm Warning	PHI	66 min
Aug 26, 8:44 PM EDT	Special Weather Statement	PHI	91 min
Sep 1, 8:47 PM EDT	Special Weather Statement	PHI	88 min
Sep 1, 9:27 PM EDT	Special Weather Statement	PHI	93 min
Sep 1, 10:34 PM EDT	Special Weather Statement	PHI	86 min
Sep 2, 3:17 PM EDT	Areal Flood Advisory	PHI	118 min
Sep 2, 3:57 PM EDT	Flash Flood Warning	PHI	2 hr
Sep 3, 1:42 PM EDT	Special Weather Statement	PHI	93 min
Sep 5, 2:12 PM EDT	Mesoscale Discussion	SPC	63 min
Sep 6, 6:48 AM EDT	Areal Flood Advisory	PHI	3 hr
Sep 8, 12:15 PM EDT	Severe Thunderstorm Watch	SPC	9 hr
Sep 8, 2:12 PM EDT	Mesoscale Discussion	SPC	93 min
Sep 8, 4:07 PM EDT	Special Weather Statement	PHI	83 min
Sep 8, 4:22 PM EDT	Mesoscale Discussion	SPC	53 min
Sep 8, 4:30 PM EDT	Severe Thunderstorm Warning	PHI	60 min
Sep 17, 2:54 PM EDT	Wind Advisory	PHI	30 hr
Sep 18, 4:13 AM EDT	Coastal Flood Advisory	PHI	21 hr
Sep 18, 11:19 AM EDT	Mesoscale Discussion	SPC	86 min
Sep 18, 12:10 PM EDT	Tornado Watch	SPC	9 hr
Sep 18, 4:21 PM EDT	Mesoscale Discussion	SPC	114 min
Sep 18, 4:42 PM EDT	Severe Thunderstorm Warning	PHI	78 min
Sep 18, 5:57 PM EDT	Severe Thunderstorm Warning	PHI	78 min
Sep 22, 3:09 PM EDT	Mesoscale Discussion	SPC	2 hr
Oct 2, 4:34 PM EDT	Special Weather Statement	PHI	56 min
Oct 12, 2:40 PM EDT	Frost Advisory	PHI	17 hr
Oct 15, 7:33 PM EDT	Special Weather Statement	PHI	117 min
Oct 19, 10:36 PM EDT	Special Weather Statement	PHI	54 min
Oct 27, 4:51 AM EDT	Flood Watch	PHI	71 hr
Oct 27, 5:05 AM EDT	High Wind Watch	PHI	24 hr
Oct 27, 5:08 PM EDT	Coastal Flood Warning	PHI	64 hr
Oct 28, 4:35 AM EDT	High Wind Warning	PHI	52 hr
Oct 28, 5:40 AM EDT	Coastal Flood Advisory	PHI	11 hr
Oct 29, 3:12 AM EDT	Areal Flood Advisory	PHI	3 hr
Oct 29, 6:10 AM EDT	Areal Flood Warning	PHI	28 hr
Oct 30, 6:03 AM EDT	Coastal Flood Advisory	PHI	20 hr
Oct 30, 8:48 AM EDT	Wind Advisory	PHI	3 hr
Oct 31, 1:50 AM EDT	Coastal Flood Advisory	PHI	74 min
Nov 4, 4:02 AM EST	Freeze Watch	PHI	11 hr
Nov 4, 2:56 PM EST	Freeze Warning	PHI	13 hr
Nov 5, 3:20 PM EST	High Wind Watch	PHI	24 hr
Nov 6, 3:41 PM EST	Wind Advisory	PHI	27 hr
Nov 12, 2:42 AM EST	Dense Fog Advisory	PHI	7 hr
Nov 13, 2:39 AM EST	Special Weather Statement	PHI	81 min
Nov 23, 5:16 AM EST	Dense Fog Advisory	PHI	3 hr
Dec 1, 7:09 PM EST	Dense Fog Advisory	PHI	14 hr
Dec 9, 4:23 AM EST	Dense Fog Advisory	PHI	5 hr
Dec 9, 7:23 PM EST	Dense Fog Advisory	PHI	14 hr
Dec 16, 8:41 PM EST	Dense Fog Advisory	PHI	16 hr
Dec 17, 3:27 PM EST	Dense Fog Advisory	PHI	12 hr
Dec 20, 3:25 PM EST	Coastal Flood Advisory	PHI	25 hr
Dec 20, 9:11 PM EST	Wind Advisory	PHI	12 hr
Dec 21, 3:16 PM EST	Wind Advisory	PHI	27 hr
Dec 26, 2:45 PM EST	Coastal Flood Advisory	PHI	19 hr
Dec 30, 9:53 AM EST	Wind Advisory	PHI	6 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	20
Tornado Warning	1
Severe Thunderstorm Watch	10
Tornado Watch	3
Mesoscale Discussion	31
Special Weather Statement	56
Flooding
Areal Flood Warning	1
Flash Flood Warning	3
Flood Watch	1
Areal Flood Advisory	10
Heat
Excessive Heat Warning	2
Excessive Heat Watch	1
Heat Advisory	7
Cold
Freeze Warning	2
Freeze Watch	2
Frost Advisory	2
Wind and dust
High Wind Warning	1
High Wind Watch	2
Wind Advisory	9
Fire
Red Flag Warning	4
Fire Weather Watch	4
Fog and smoke
Dense Fog Advisory	9
Coast and beach
Coastal Flood Warning	1
Coastal Flood Advisory	12
Coastal Flood Statement	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 2011 2013

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.