Alert archive / South Carolina / Hampton County

Weather alerts in Hampton County, South Carolina, 2012

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

Hampton County and its neighbors

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

Alerts
182
Warnings
45
Watches
19
Advisories
37
Busiest month
July40 alerts
Busiest day
July 1, 20128 alerts

Over time

By month

Warning verification

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

Hampton County, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings402635%2181%31 min
Flash flood warnings110%0

Each office's whole area, 2012

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Charleston, SC: tornado warnings18289%743%1 min
NWS Charleston, SC: severe thunderstorm warnings25318128%44483%25 min
NWS Charleston, SC: flash flood warnings11645%3187%144 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 21, 12:28 PM ESTTornado WatchSPC8 hr
Jan 21, 2:57 PM ESTMesoscale DiscussionSPC63 min
Jan 21, 5:13 PM ESTSevere Thunderstorm WarningCHS47 min
Jan 22, 1:20 AM ESTDense Fog AdvisoryCHS8 hr
Jan 23, 5:40 AM ESTDense Fog AdvisoryCHS7 hr
Jan 26, 3:25 AM ESTDense Fog AdvisoryCHS8 hr
Feb 10, 1:56 PM ESTFire Weather WatchCHS12 hr
Feb 11, 2:04 AM ESTRed Flag WarningCHS17 hr
Feb 24, 3:39 AM ESTWind AdvisoryCHS15 hr
Feb 24, 12:04 PM ESTTornado WatchSPC7 hr
Feb 24, 1:50 PM ESTMesoscale DiscussionSPC85 min
Feb 24, 3:33 PM ESTSevere Thunderstorm WarningCHS57 min
Feb 24, 4:11 PM ESTMesoscale DiscussionSPC64 min
Feb 24, 4:26 PM ESTSevere Thunderstorm WarningCHS34 min
Feb 24, 4:57 PM ESTSevere Thunderstorm WarningCHS63 min
Mar 1, 7:51 AM ESTSpecial Weather StatementCHS24 min
Mar 5, 4:30 AM ESTWind AdvisoryCHS11 hr
Mar 13, 3:59 PM EDTSpecial Weather StatementCHS31 min
Mar 13, 4:28 PM EDTSpecial Weather StatementCHS32 min
Mar 14, 6:26 AM EDTDense Fog AdvisoryCHS3 hr
Mar 16, 3:25 PM EDTMesoscale DiscussionSPC2 hr
Mar 16, 4:06 PM EDTSpecial Weather StatementCHS24 min
Mar 16, 4:25 PM EDTSevere Thunderstorm WarningCHS65 min
Mar 16, 4:41 PM EDTSevere Thunderstorm WarningCHS64 min
Mar 16, 5:26 PM EDTSevere Thunderstorm WarningCHS64 min
Mar 19, 5:56 PM EDTSpecial Weather StatementCHS34 min
Mar 21, 4:30 AM EDTDense Fog AdvisoryCHS5 hr
Mar 23, 6:34 PM EDTSpecial Weather StatementCHS56 min
Mar 23, 6:55 PM EDTSevere Thunderstorm WarningCHS33 min
Mar 24, 12:29 PM EDTMesoscale DiscussionSPC61 min
Mar 24, 1:27 PM EDTSpecial Weather StatementCHS33 min
Mar 24, 1:53 PM EDTSevere Thunderstorm WatchSPC7 hr
Mar 24, 8:43 PM EDTSevere Thunderstorm WatchSPC5 hr
Mar 24, 9:37 PM EDTSevere Thunderstorm WarningCHS53 min
Mar 24, 10:03 PM EDTSevere Thunderstorm WarningCHS57 min
Mar 24, 10:20 PM EDTMesoscale DiscussionSPC115 min
Apr 2, 1:48 PM EDTMesoscale DiscussionSPC87 min
Apr 3, 3:44 PM EDTSpecial Weather StatementCHS31 min
Apr 3, 4:09 PM EDTSevere Thunderstorm WarningCHS66 min
Apr 5, 1:03 PM EDTMesoscale DiscussionSPC87 min
Apr 5, 1:47 PM EDTSevere Thunderstorm WatchSPC7 hr
Apr 5, 3:37 PM EDTMesoscale DiscussionSPC53 min
Apr 5, 6:35 PM EDTMesoscale DiscussionSPC85 min
Apr 12, 8:39 PM EDTFrost AdvisoryCHS11 hr
Apr 21, 4:20 AM EDTDense Fog AdvisoryCHS5 hr
Apr 26, 7:11 AM EDTWind AdvisoryCHS9 hr
May 2, 7:05 AM EDTDense Fog AdvisoryCHS2 hr
May 3, 6:42 AM EDTDense Fog AdvisoryCHS3 hr
May 4, 10:41 PM EDTSpecial Weather StatementCHS49 min
May 4, 11:32 PM EDTSpecial Weather StatementCHS43 min
May 9, 12:59 PM EDTMesoscale DiscussionSPC2 hr
May 9, 1:31 PM EDTSpecial Weather StatementCHS44 min
May 9, 2:00 PM EDTSevere Thunderstorm WatchSPC5 hr
May 9, 2:10 PM EDTSpecial Weather StatementCHS35 min
May 9, 2:50 PM EDTSpecial Weather StatementCHS40 min
May 9, 6:19 PM EDTSpecial Weather StatementCHS26 min
May 14, 4:31 PM EDTSevere Thunderstorm WarningCHS40 min
May 15, 2:27 PM EDTSevere Thunderstorm WatchSPC7 hr
May 15, 3:54 PM EDTSevere Thunderstorm WarningCHS20 min
May 15, 5:25 PM EDTSevere Thunderstorm WarningCHS65 min
May 15, 6:30 PM EDTMesoscale DiscussionSPC90 min
May 15, 8:42 PM EDTMesoscale DiscussionSPC63 min
May 17, 1:29 PM EDTSpecial Weather StatementCHS61 min
May 17, 2:32 PM EDTSpecial Weather StatementCHS58 min
May 22, 3:32 PM EDTSevere Thunderstorm WatchSPC5 hr
May 22, 5:06 PM EDTSpecial Weather StatementCHS24 min
May 25, 5:18 AM EDTDense Fog AdvisoryCHS4 hr
May 27, 4:09 AM EDTFlash Flood WatchCHS60 hr
May 29, 12:20 PM EDTMesoscale DiscussionSPC55 min
May 29, 1:38 PM EDTSpecial Weather StatementCHS22 min
May 29, 3:53 PM EDTFlash Flood WatchCHS12 hr
May 29, 9:59 PM EDTAreal Flood AdvisoryCHS2 hr
Jun 1, 3:09 PM EDTSevere Thunderstorm WarningCHS39 min
Jun 1, 4:31 PM EDTMesoscale DiscussionSPC59 min
Jun 1, 5:24 PM EDTSevere Thunderstorm WarningCHS66 min
Jun 10, 3:34 PM EDTAreal Flood AdvisoryCHS56 min
Jun 10, 3:50 PM EDTSpecial Weather StatementCHS25 min
Jun 10, 4:17 PM EDTSpecial Weather StatementCHS43 min
Jun 11, 2:10 PM EDTSpecial Weather StatementCHS50 min
Jun 11, 2:29 PM EDTSevere Thunderstorm WarningCHS61 min
Jun 11, 2:35 PM EDTSevere Thunderstorm WarningCHS55 min
Jun 11, 3:53 PM EDTAreal Flood AdvisoryCHS112 min
Jun 13, 8:49 PM EDTSpecial Weather StatementCHS26 min
Jun 29, 4:10 AM EDTExcessive Heat WatchCHS23 hr
Jun 29, 4:10 AM EDTHeat AdvisoryCHS16 hr
Jun 30, 3:37 AM EDTExcessive Heat WatchCHS24 hr
Jun 30, 3:37 AM EDTExcessive Heat WarningCHS17 hr
Jul 1, 3:20 AM EDTExcessive Heat WarningCHS15 hr
Jul 1, 1:39 PM EDTMesoscale DiscussionSPC96 min
Jul 1, 2:01 PM EDTSevere Thunderstorm WatchSPC9 hr
Jul 1, 4:15 PM EDTMesoscale DiscussionSPC90 min
Jul 1, 6:10 PM EDTHeat AdvisoryCHS16 hr
Jul 1, 7:23 PM EDTSevere Thunderstorm WarningCHS67 min
Jul 1, 7:31 PM EDTSevere Thunderstorm WarningCHS59 min
Jul 1, 7:39 PM EDTMesoscale DiscussionSPC96 min
Jul 1, 8:25 PM EDTSevere Thunderstorm WarningCHS65 min
Jul 1, 9:45 PM EDTMesoscale DiscussionSPC60 min
Jul 3, 3:34 PM EDTSevere Thunderstorm WarningCHS56 min
Jul 3, 4:41 PM EDTSpecial Weather StatementCHS49 min
Jul 3, 6:59 PM EDTMesoscale DiscussionSPC3 hr
Jul 11, 1:30 PM EDTMesoscale DiscussionSPC2 hr
Jul 11, 2:48 PM EDTSpecial Weather StatementCHS27 min
Jul 11, 3:59 PM EDTSpecial Weather StatementCHS31 min
Jul 11, 4:53 PM EDTSevere Thunderstorm WarningCHS67 min
Jul 12, 1:45 PM EDTSpecial Weather StatementCHS30 min
Jul 16, 9:03 PM EDTSpecial Weather StatementCHS42 min
Jul 17, 3:22 PM EDTSpecial Weather StatementCHS38 min
Jul 22, 4:39 PM EDTMesoscale DiscussionSPC2 hr
Jul 24, 9:30 PM EDTSevere Thunderstorm WarningCHS60 min
Jul 24, 10:26 PM EDTSevere Thunderstorm WarningCHS64 min
Jul 26, 3:22 AM EDTHeat AdvisoryCHS17 hr
Jul 26, 3:17 PM EDTSpecial Weather StatementCHS28 min
Jul 26, 3:54 PM EDTSpecial Weather StatementCHS36 min
Jul 26, 4:21 PM EDTSpecial Weather StatementCHS24 min
Jul 26, 4:36 PM EDTSevere Thunderstorm WarningCHS24 min
Jul 27, 3:29 AM EDTHeat AdvisoryCHS15 hr
Jul 27, 2:08 PM EDTSpecial Weather StatementCHS37 min
Jul 27, 4:09 PM EDTSevere Thunderstorm WarningCHS66 min
Jul 27, 4:54 PM EDTSevere Thunderstorm WarningCHS66 min
Jul 29, 2:08 PM EDTSevere Thunderstorm WarningCHS52 min
Jul 29, 2:35 PM EDTMesoscale DiscussionSPC55 min
Jul 29, 2:55 PM EDTSevere Thunderstorm WatchSPC5 hr
Jul 29, 6:36 PM EDTMesoscale DiscussionSPC24 min
Jul 29, 8:59 PM EDTSpecial Weather StatementCHS46 min
Jul 30, 3:08 PM EDTSpecial Weather StatementCHS52 min
Jul 30, 3:57 PM EDTSevere Thunderstorm WarningCHS63 min
Jul 30, 4:27 PM EDTSevere Thunderstorm WarningCHS48 min
Aug 2, 1:11 PM EDTMesoscale DiscussionSPC64 min
Aug 2, 2:33 PM EDTSevere Thunderstorm WatchSPC5 hr
Aug 2, 2:37 PM EDTSpecial Weather StatementCHS23 min
Aug 2, 3:53 PM EDTSpecial Weather StatementCHS37 min
Aug 2, 4:01 PM EDTSevere Thunderstorm WarningCHS59 min
Aug 2, 4:24 PM EDTMesoscale DiscussionSPC66 min
Aug 5, 4:34 PM EDTAreal Flood AdvisoryCHS56 min
Aug 5, 5:26 PM EDTAreal Flood AdvisoryCHS41 min
Aug 7, 4:20 PM EDTAreal Flood AdvisoryCHS55 min
Aug 9, 7:43 PM EDTSpecial Weather StatementCHS47 min
Aug 11, 1:45 PM EDTSevere Thunderstorm WarningCHS60 min
Aug 11, 2:21 PM EDTSpecial Weather StatementCHS54 min
Aug 11, 5:43 PM EDTSpecial Weather StatementCHS47 min
Aug 14, 6:45 PM EDTMesoscale DiscussionSPC2 hr
Aug 16, 4:00 PM EDTSpecial Weather StatementCHS45 min
Aug 16, 4:16 PM EDTSevere Thunderstorm WarningCHS59 min
Aug 16, 4:43 PM EDTSevere Thunderstorm WarningCHS41 min
Aug 17, 4:21 PM EDTSevere Thunderstorm WarningCHS39 min
Aug 19, 10:33 AM EDTSevere Thunderstorm WatchSPC7 hr
Aug 19, 10:54 AM EDTSpecial Weather StatementCHS66 min
Aug 19, 11:14 AM EDTSevere Thunderstorm WarningCHS46 min
Aug 21, 7:45 PM EDTAreal Flood AdvisoryCHS60 min
Aug 21, 8:45 PM EDTAreal Flood AdvisoryCHS46 min
Aug 28, 4:56 PM EDTSevere Thunderstorm WarningCHS64 min
Aug 29, 8:34 PM EDTAreal Flood AdvisoryCHS86 min
Aug 29, 9:40 PM EDTFlash Flood WarningCHS3 hr
Sep 3, 1:52 PM EDTMesoscale DiscussionSPC53 min
Sep 8, 4:26 PM EDTSpecial Weather StatementCHS64 min
Sep 18, 9:39 AM EDTMesoscale DiscussionSPC66 min
Sep 18, 11:35 AM EDTMesoscale DiscussionSPC85 min
Sep 27, 7:01 AM EDTDense Fog AdvisoryCHS3 hr
Sep 29, 4:07 PM EDTSpecial Weather StatementCHS23 min
Sep 29, 4:52 PM EDTSpecial Weather StatementCHS38 min
Sep 29, 8:56 PM EDTSevere Thunderstorm WarningCHS64 min
Oct 7, 5:55 AM EDTDense Fog AdvisoryCHS4 hr
Oct 31, 3:36 PM EDTFire Weather WatchCHS12 hr
Nov 4, 2:34 PM ESTMesoscale DiscussionSPC2 hr
Nov 4, 3:08 PM ESTSpecial Weather StatementCHS37 min
Nov 4, 3:46 PM ESTSevere Thunderstorm WarningCHS59 min
Nov 4, 4:16 PM ESTSpecial Weather StatementCHS29 min
Nov 4, 5:42 PM ESTSpecial Weather StatementCHS33 min
Nov 7, 9:22 PM ESTFrost AdvisoryCHS11 hr
Nov 8, 12:15 PM ESTFrost AdvisoryCHS21 hr
Nov 8, 6:45 PM ESTFreeze WarningCHS14 hr
Dec 3, 2:50 AM ESTDense Fog AdvisoryCHS7 hr
Dec 3, 9:42 PM ESTDense Fog AdvisoryCHS10 hr
Dec 8, 2:22 AM ESTDense Fog AdvisoryCHS8 hr
Dec 8, 10:38 PM ESTDense Fog AdvisoryCHS13 hr
Dec 10, 1:17 AM ESTDense Fog AdvisoryCHS9 hr
Dec 17, 2:28 PM ESTMesoscale DiscussionSPC92 min
Dec 17, 2:55 PM ESTTornado WatchSPC2 hr
Dec 20, 4:01 PM ESTWind AdvisoryCHS27 hr
Dec 20, 7:47 PM ESTSpecial Weather StatementCHS58 min
Dec 20, 8:45 PM ESTSpecial Weather StatementCHS60 min
Dec 25, 4:16 PM ESTWind AdvisoryCHS32 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 archive20112013

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.