Alert archive / South Carolina / Berkeley County

Weather alerts in Berkeley County, South Carolina, 2019

151 weather alerts in 2019, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Berkeley County and its neighbors

Each county as a circle sized by its count in 2019. Tap one for its archive.

Alerts
151
Warnings
34
Watches
15
Advisories
54
Busiest month
June31 alerts
Busiest day
June 20, 20199 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 3 tornado warnings covering Berkeley County in 2019 had a tornado report inside them.

Berkeley County, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings30100%0
Severe thunderstorm warnings201715%27100%29 min
Flash flood warnings110%1100%303 min

Each office's whole area, 2019

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Charleston, SC: tornado warnings9189%475%3 min
NWS Charleston, SC: severe thunderstorm warnings1107829%42483%28 min
NWS Charleston, SC: flash flood warnings110%1100%303 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
Jan 2, 5:30 PM ESTDense Fog AdvisoryCHS12 hr
Jan 4, 2:51 PM ESTLake Wind AdvisoryCHS22 hr
Jan 19, 3:19 AM ESTLake Wind AdvisoryCHS43 hr
Jan 23, 3:15 PM ESTLake Wind AdvisoryCHS24 hr
Feb 8, 2:53 PM ESTLake Wind AdvisoryCHS24 hr
Feb 11, 8:59 PM ESTDense Fog AdvisoryCHS15 hr
Feb 12, 7:35 PM ESTSpecial Weather StatementCHS40 min
Feb 20, 10:08 PM ESTDense Fog AdvisoryCHS12 hr
Feb 24, 3:01 AM ESTDense Fog AdvisoryCHS6 hr
Feb 28, 2:53 AM ESTDense Fog AdvisoryCHS6 hr
Mar 3, 1:51 AM ESTDense Fog AdvisoryCHS8 hr
Mar 3, 3:19 PM ESTMesoscale DiscussionSPC116 min
Mar 3, 3:35 PM ESTTornado WatchSPC7 hr
Mar 3, 6:14 PM ESTSpecial Weather StatementCHS31 min
Mar 3, 6:15 PM ESTMesoscale DiscussionSPC2 hr
Mar 3, 6:33 PM ESTTornado WarningCHS27 min
Mar 3, 7:01 PM ESTSpecial Weather StatementCHS29 min
Mar 4, 12:05 AM ESTLake Wind AdvisoryCHS3 hr
Mar 4, 3:40 PM ESTFreeze WatchCHS24 hr
Mar 5, 3:03 AM ESTFreeze WarningCHS30 hr
Mar 6, 10:02 AM ESTFreeze WarningCHS23 hr
Mar 15, 7:48 PM EDTSpecial Weather StatementCHS42 min
Mar 25, 9:29 PM EDTSpecial Weather StatementCHS46 min
Apr 1, 3:01 PM EDTLake Wind AdvisoryCHS22 hr
Apr 8, 12:07 AM EDTDense Fog AdvisoryCHS10 hr
Apr 9, 9:54 PM EDTRiver Flood WarningCHS22 days
Apr 13, 8:55 PM EDTLake Wind AdvisoryCHS38 hr
Apr 14, 5:43 PM EDTMesoscale DiscussionSPC2 hr
Apr 14, 6:31 PM EDTTornado WatchSPC3 hr
Apr 18, 4:04 PM EDTWind AdvisoryCHS25 hr
Apr 19, 10:44 AM EDTTornado WatchSPC5 hr
Apr 19, 1:40 PM EDTSevere Thunderstorm WarningCHS65 min
Apr 19, 2:27 PM EDTSevere Thunderstorm WarningCHS63 min
Apr 19, 2:36 PM EDTTornado WarningCHS9 min
Apr 19, 2:39 PM EDTSevere Thunderstorm WarningCHS66 min
Apr 19, 3:17 PM EDTTornado WarningCHS28 min
Apr 20, 9:59 AM EDTLake Wind AdvisoryCHS10 hr
Apr 26, 3:28 AM EDTLake Wind AdvisoryCHS19 hr
May 4, 3:08 PM EDTSevere Thunderstorm WarningCHS51 min
May 12, 11:50 AM EDTMesoscale DiscussionSPC85 min
May 12, 12:41 PM EDTSevere Thunderstorm WatchSPC6 hr
May 12, 12:49 PM EDTSpecial Weather StatementCHS26 min
May 12, 3:04 PM EDTMesoscale DiscussionSPC56 min
May 12, 4:23 PM EDTMesoscale DiscussionSPC2 hr
May 18, 5:07 PM EDTSpecial Weather StatementCHS38 min
May 26, 3:23 AM EDTHeat AdvisoryCHS16 hr
May 31, 5:11 PM EDTSpecial Weather StatementCHS49 min
Jun 4, 12:43 PM EDTMesoscale DiscussionSPC92 min
Jun 4, 1:18 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 4, 4:15 PM EDTMesoscale DiscussionSPC90 min
Jun 11, 9:16 AM EDTRiver Flood WarningCHS10 days
Jun 11, 3:04 PM EDTFlash Flood WatchCHS30 hr
Jun 12, 7:43 AM EDTAreal Flood AdvisoryCHS62 min
Jun 12, 9:39 AM EDTAreal Flood AdvisoryCHS81 min
Jun 12, 10:59 AM EDTAreal Flood AdvisoryCHS2 hr
Jun 12, 12:59 PM EDTAreal Flood AdvisoryCHS106 min
Jun 12, 2:51 PM EDTAreal Flood AdvisoryCHS114 min
Jun 19, 5:59 PM EDTSpecial Weather StatementCHS46 min
Jun 20, 12:02 PM EDTMesoscale DiscussionSPC118 min
Jun 20, 1:44 PM EDTSevere Thunderstorm WatchSPC8 hr
Jun 20, 4:47 PM EDTMesoscale DiscussionSPC88 min
Jun 20, 5:03 PM EDTSevere Thunderstorm WarningCHS57 min
Jun 20, 5:58 PM EDTSevere Thunderstorm WarningCHS62 min
Jun 20, 6:35 PM EDTSevere Thunderstorm WarningCHS55 min
Jun 20, 7:00 PM EDTSpecial Weather StatementCHS30 min
Jun 20, 7:16 PM EDTMesoscale DiscussionSPC89 min
Jun 20, 7:24 PM EDTSevere Thunderstorm WarningCHS66 min
Jun 22, 5:11 AM EDTSevere Thunderstorm WarningCHS64 min
Jun 22, 6:09 AM EDTSevere Thunderstorm WarningCHS66 min
Jun 22, 1:01 PM EDTMesoscale DiscussionSPC119 min
Jun 22, 2:08 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 22, 4:35 PM EDTMesoscale DiscussionSPC85 min
Jun 22, 6:25 PM EDTSpecial Weather StatementCHS35 min
Jun 22, 6:44 PM EDTSevere Thunderstorm WarningCHS61 min
Jun 22, 6:58 PM EDTMesoscale DiscussionSPC62 min
Jun 22, 7:24 PM EDTSpecial Weather StatementCHS36 min
Jun 24, 3:30 AM EDTHeat AdvisoryCHS12 hr
Jun 24, 11:44 PM EDTSpecial Weather StatementCHS46 min
Jul 3, 1:31 PM EDTMesoscale DiscussionSPC119 min
Jul 3, 6:09 PM EDTSevere Thunderstorm WarningCHS66 min
Jul 3, 7:03 PM EDTAreal Flood AdvisoryCHS87 min
Jul 3, 7:13 PM EDTSevere Thunderstorm WarningCHS62 min
Jul 3, 7:44 PM EDTAreal Flood AdvisoryCHS91 min
Jul 3, 8:20 PM EDTAreal Flood AdvisoryCHS85 min
Jul 4, 1:34 PM EDTMesoscale DiscussionSPC86 min
Jul 4, 2:29 PM EDTSpecial Weather StatementCHS46 min
Jul 4, 3:21 PM EDTSpecial Weather StatementCHS24 min
Jul 4, 3:31 PM EDTSevere Thunderstorm WarningCHS59 min
Jul 4, 3:54 PM EDTSevere Thunderstorm WarningCHS66 min
Jul 4, 4:29 PM EDTSevere Thunderstorm WarningCHS61 min
Jul 4, 5:32 PM EDTSpecial Weather StatementCHS43 min
Jul 5, 9:42 AM EDTSpecial Weather StatementCHS33 min
Jul 5, 9:49 AM EDTAreal Flood AdvisoryCHS86 min
Jul 5, 12:15 PM EDTSpecial Weather StatementCHS30 min
Jul 5, 12:17 PM EDTSpecial Weather StatementCHS28 min
Jul 5, 12:21 PM EDTSevere Thunderstorm WarningCHS54 min
Jul 5, 2:03 PM EDTAreal Flood AdvisoryCHS87 min
Jul 7, 5:02 PM EDTSpecial Weather StatementCHS28 min
Jul 12, 6:58 PM EDTAreal Flood AdvisoryCHS62 min
Jul 13, 5:41 PM EDTSpecial Weather StatementCHS49 min
Jul 13, 6:28 PM EDTSpecial Weather StatementCHS47 min
Jul 18, 6:50 PM EDTSevere Thunderstorm WarningCHS55 min
Jul 18, 7:47 PM EDTSpecial Weather StatementCHS43 min
Aug 14, 2:08 PM EDTSpecial Weather StatementCHS37 min
Aug 14, 2:10 PM EDTSevere Thunderstorm WarningCHS65 min
Aug 14, 2:34 PM EDTAreal Flood AdvisoryCHS56 min
Aug 14, 2:38 PM EDTMesoscale DiscussionSPC2 hr
Aug 14, 3:12 PM EDTSevere Thunderstorm WarningCHS63 min
Aug 14, 3:29 PM EDTAreal Flood AdvisoryCHS91 min
Aug 14, 4:51 PM EDTAreal Flood AdvisoryCHS84 min
Aug 15, 4:34 PM EDTMesoscale DiscussionSPC116 min
Aug 17, 10:22 AM EDTAreal Flood AdvisoryCHS83 min
Aug 17, 2:34 PM EDTAreal Flood AdvisoryCHS116 min
Aug 17, 4:25 PM EDTAreal Flood AdvisoryCHS2 hr
Aug 17, 4:52 PM EDTAreal Flood AdvisoryCHS83 min
Aug 24, 6:45 PM EDTSpecial Weather StatementCHS30 min
Sep 2, 5:04 PM EDTHurricane WatchCHS61 hr
Sep 3, 11:03 AM EDTHurricane WarningCHS57 hr
Sep 3, 11:14 AM EDTTropical Storm WarningCHS64 hr
Sep 3, 3:34 PM EDTFlash Flood WatchCHS49 hr
Sep 4, 9:47 AM EDTSpecial Weather StatementCHS43 min
Sep 4, 11:09 AM EDTSpecial Weather StatementCHS51 min
Sep 4, 1:46 PM EDTAreal Flood AdvisoryCHS104 min
Sep 5, 4:27 AM EDTFlash Flood WarningCHS11 hr
Sep 5, 10:37 AM EDTRiver Flood WarningCHS5 hr
Sep 5, 10:55 PM EDTWind AdvisoryCHS5 hr
Sep 6, 6:26 AM EDTAreal Flood AdvisoryCHS8 hr
Sep 13, 6:09 PM EDTSpecial Weather StatementCHS51 min
Oct 19, 3:24 AM EDTLake Wind AdvisoryCHS23 hr
Oct 28, 2:27 AM EDTDense Fog AdvisoryCHS5 hr
Oct 31, 6:34 PM EDTMesoscale DiscussionSPC56 min
Oct 31, 7:58 PM EDTMesoscale DiscussionSPC62 min
Nov 6, 12:54 AM ESTDense Fog AdvisoryCHS5 hr
Nov 8, 3:51 AM ESTFreeze WatchCHS11 hr
Nov 9, 3:38 AM ESTFreeze WatchCHS12 hr
Nov 9, 3:21 PM ESTFreeze WarningCHS17 hr
Nov 11, 3:03 PM ESTFreeze WatchCHS24 hr
Nov 11, 3:03 PM ESTLake Wind AdvisoryCHS46 hr
Nov 12, 4:09 AM ESTFreeze WarningCHS30 hr
Nov 15, 10:22 AM ESTLake Wind AdvisoryCHS51 hr
Nov 23, 3:22 PM ESTLake Wind AdvisoryCHS16 hr
Dec 1, 2:51 AM ESTLake Wind AdvisoryCHS33 hr
Dec 9, 7:27 AM ESTDense Fog AdvisoryCHS3 hr
Dec 16, 6:17 AM ESTRiver Flood WarningCHS100 days
Dec 17, 3:45 PM ESTLake Wind AdvisoryCHS18 hr
Dec 21, 3:42 PM ESTFlash Flood WatchCHS65 hr
Dec 23, 1:55 AM ESTAreal Flood AdvisoryCHS13 hr
Dec 23, 2:55 PM ESTAreal Flood AdvisoryCHS3 hr
Dec 23, 5:44 PM ESTAreal Flood AdvisoryCHS2 hr
Dec 23, 10:15 PM ESTLake Wind AdvisoryCHS20 hr
Dec 23, 10:29 PM ESTAreal Flood AdvisoryCHS6 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 archive20182020

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.