Alert archive / Maryland / Cecil County

Weather alerts in Cecil County, Maryland, 2023

115 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Cecil County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts
115
Warnings
27
Watches
27
Advisories
19
Busiest month
July35 alerts
Busiest day
September 9, 20237 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 2 tornado warnings covering Cecil County in 2023 had a tornado report inside them; 1 of 1 tornado reports fell inside a warning, on average 0 minutes after it went out.

Cecil County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings2150%1100%0 min
Severe thunderstorm warnings161131%2190%23 min
Flash flood warnings10100%0

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Baltimore/Washington: tornado warnings15193%250%0 min
NWS Baltimore/Washington: severe thunderstorm warnings37028623%99289%21 min
NWS Baltimore/Washington: flash flood warnings482352%4798%48 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.

IssuedProductOfficeLasted
Feb 17, 3:21 PM ESTWind AdvisoryLWX4 hr
Feb 21, 2:22 PM ESTMesoscale DiscussionSPC53 min
Mar 3, 12:33 PM ESTWind AdvisoryLWX26 hr
Mar 13, 2:38 PM EDTWind AdvisoryLWX33 hr
Mar 25, 11:17 PM EDTDense Fog AdvisoryLWX5 hr
Mar 31, 2:29 PM EDTHigh Wind WarningLWX35 hr
Apr 1, 4:37 PM EDTMesoscale DiscussionSPC113 min
Apr 1, 6:27 PM EDTSevere Thunderstorm WarningLWX48 min
Apr 1, 6:35 PM EDTTornado WarningLWX25 min
Apr 1, 6:55 PM EDTMesoscale DiscussionSPC95 min
Apr 1, 7:01 PM EDTSevere Thunderstorm WarningLWX29 min
Apr 2, 1:13 PM EDTFrost AdvisoryLWX20 hr
Apr 6, 2:00 PM EDTMesoscale DiscussionSPC90 min
Apr 6, 2:58 PM EDTSevere Thunderstorm WatchSPC7 hr
Apr 6, 6:08 PM EDTMesoscale DiscussionSPC2 hr
Apr 6, 8:27 PM EDTMesoscale DiscussionSPC93 min
Apr 8, 3:21 AM EDTFrost AdvisoryLWX30 hr
Apr 9, 9:08 AM EDTFreeze WarningLWX24 hr
Apr 11, 3:46 PM EDTFire Weather WatchLWX17 hr
Apr 12, 9:01 AM EDTRed Flag WarningLWX11 hr
Apr 17, 12:25 PM EDTFire Weather WatchLWX15 hr
Apr 22, 10:07 AM EDTSevere Thunderstorm WatchSPC10 hr
Apr 22, 2:12 PM EDTMesoscale DiscussionSPC93 min
Apr 22, 2:47 PM EDTMesoscale DiscussionSPC118 min
Jun 3, 10:07 PM EDTCoastal Flood AdvisoryLWX44 hr
Jun 12, 12:30 PM EDTMesoscale DiscussionSPC60 min
Jun 16, 10:36 AM EDTSevere Thunderstorm WarningLWX39 min
Jun 16, 10:50 AM EDTMesoscale DiscussionSPC55 min
Jun 16, 11:06 AM EDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 12:36 PM EDTMesoscale DiscussionSPC2 hr
Jun 26, 2:20 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 26, 8:03 PM EDTMesoscale DiscussionSPC87 min
Jun 27, 1:54 PM EDTSevere Thunderstorm WarningLWX51 min
Jun 27, 2:46 PM EDTFlash Flood WarningLWX3 hr
Jul 2, 4:31 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 2, 7:42 PM EDTMesoscale DiscussionSPC93 min
Jul 3, 2:55 PM EDTSevere Thunderstorm WatchSPC7 hr
Jul 3, 4:49 PM EDTMesoscale DiscussionSPC116 min
Jul 3, 8:07 PM EDTSevere Thunderstorm WarningLWX53 min
Jul 3, 8:29 PM EDTMesoscale DiscussionSPC91 min
Jul 3, 11:42 PM EDTAreal Flood WarningLWX2 hr
Jul 8, 3:23 PM EDTFlood WatchLWX25 hr
Jul 9, 10:28 AM EDTMesoscale DiscussionSPC92 min
Jul 9, 11:06 AM EDTSevere Thunderstorm WatchSPC9 hr
Jul 9, 1:20 PM EDTMesoscale DiscussionSPC85 min
Jul 9, 4:08 PM EDTMesoscale DiscussionSPC97 min
Jul 14, 2:02 PM EDTMesoscale DiscussionSPC2 hr
Jul 15, 3:50 PM EDTMesoscale DiscussionSPC2 hr
Jul 15, 6:38 PM EDTFlood WatchLWX23 hr
Jul 19, 4:48 PM EDTMesoscale DiscussionSPC87 min
Jul 21, 4:26 AM EDTMesoscale DiscussionSPC94 min
Jul 25, 10:58 AM EDTMesoscale DiscussionSPC2 hr
Jul 25, 12:13 PM EDTSevere Thunderstorm WatchSPC10 hr
Jul 25, 12:44 PM EDTFlood WatchLWX9 hr
Jul 26, 9:01 AM EDTHeat AdvisoryLWX35 hr
Jul 26, 1:57 PM EDTExcessive Heat WatchLWX24 hr
Jul 27, 11:40 AM EDTMesoscale DiscussionSPC2 hr
Jul 27, 1:48 PM EDTExcessive Heat WarningLWX29 hr
Jul 27, 3:18 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 27, 4:46 PM EDTMesoscale DiscussionSPC89 min
Jul 28, 8:33 AM EDTHeat AdvisoryLWX34 hr
Jul 28, 4:48 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 28, 7:41 PM EDTSevere Thunderstorm Warning Considerable damage threatLWX79 min
Jul 28, 7:52 PM EDTTornado WarningLWX26 min
Jul 28, 7:54 PM EDTMesoscale DiscussionSPC96 min
Jul 29, 1:56 PM EDTMesoscale DiscussionSPC64 min
Jul 29, 2:48 PM EDTSevere Thunderstorm WatchSPC6 hr
Jul 29, 4:30 PM EDTSevere Thunderstorm WarningLWX75 min
Jul 29, 4:45 PM EDTMesoscale DiscussionSPC2 hr
Aug 7, 1:20 PM EDTTornado WatchSPC11 hr
Aug 7, 2:31 PM EDTMesoscale DiscussionSPC59 min
Aug 7, 5:01 PM EDTMesoscale DiscussionSPC89 min
Aug 7, 5:06 PM EDTSevere Thunderstorm WarningLWX39 min
Aug 7, 5:35 PM EDTSevere Thunderstorm WarningLWX55 min
Aug 10, 12:25 PM EDTSevere Thunderstorm WarningLWX35 min
Aug 10, 12:51 PM EDTSevere Thunderstorm WarningLWX39 min
Aug 14, 1:55 PM EDTFlood WatchLWX9 hr
Aug 15, 1:28 PM EDTMesoscale DiscussionSPC3 hr
Aug 15, 2:08 PM EDTSevere Thunderstorm WatchSPC6 hr
Sep 5, 12:36 AM EDTHeat AdvisoryLWX18 hr
Sep 6, 3:11 AM EDTHeat AdvisoryLWX16 hr
Sep 7, 11:58 AM EDTMesoscale DiscussionSPC3 hr
Sep 7, 1:14 PM EDTSevere Thunderstorm WatchSPC8 hr
Sep 7, 4:48 PM EDTMesoscale DiscussionSPC87 min
Sep 7, 6:13 PM EDTMesoscale DiscussionSPC92 min
Sep 7, 6:49 PM EDTSevere Thunderstorm WarningLWX26 min
Sep 7, 7:51 PM EDTMesoscale DiscussionSPC84 min
Sep 8, 2:46 PM EDTMesoscale DiscussionSPC119 min
Sep 8, 3:11 PM EDTSevere Thunderstorm WatchSPC8 hr
Sep 8, 6:34 PM EDTMesoscale DiscussionSPC86 min
Sep 8, 8:22 PM EDTSevere Thunderstorm Warning Considerable damage threatLWX53 min
Sep 8, 9:45 PM EDTSevere Thunderstorm WarningLWX30 min
Sep 8, 10:31 PM EDTMesoscale DiscussionSPC59 min
Sep 9, 2:08 PM EDTMesoscale DiscussionSPC3 hr
Sep 9, 4:23 PM EDTSevere Thunderstorm WatchSPC5 hr
Sep 9, 6:06 PM EDTMesoscale DiscussionSPC114 min
Sep 9, 6:36 PM EDTSevere Thunderstorm WarningLWX54 min
Sep 9, 8:08 PM EDTMesoscale DiscussionSPC2 hr
Sep 12, 1:44 PM EDTFlood WatchLWX13 hr
Sep 13, 12:43 AM EDTMesoscale DiscussionSPC92 min
Sep 13, 12:44 AM EDTSevere Thunderstorm WarningLWX31 min
Sep 22, 4:20 AM EDTWind AdvisoryLWX39 hr
Sep 24, 10:15 AM EDTCoastal Flood AdvisoryLWX17 hr
Oct 23, 9:52 AM EDTFrost AdvisoryLWX24 hr
Oct 31, 3:48 AM EDTFreeze WatchLWX23 hr
Nov 1, 2:26 AM EDTFreeze WarningLWX32 hr
Nov 20, 7:06 PM ESTCoastal Flood AdvisoryLWX46 hr
Dec 2, 2:13 AM ESTDense Fog AdvisoryLWX9 hr
Dec 2, 7:00 PM ESTDense Fog AdvisoryLWX7 hr
Dec 8, 8:16 PM ESTFlood WatchLWX46 hr
Dec 9, 3:07 AM ESTDense Fog AdvisoryLWX8 hr
Dec 16, 1:32 PM ESTFlood WatchLWX39 hr
Dec 17, 3:51 AM ESTWind AdvisoryLWX34 hr
Dec 18, 1:05 AM ESTAreal Flood WarningLWX8 hr
Dec 27, 9:37 PM ESTAreal Flood WarningLWX7 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

The busiest days

Days with the most alerts issued, by UTC date.

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20222024

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.