Alert archive / South Carolina / Oconee County

Weather alerts in Oconee County, South Carolina, 2011

171 weather alerts in 2011, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Oconee County and its neighbors

Each county as a circle sized by its count in 2011. Tap one for its archive.

Alerts
171
Warnings
66
Watches
22
Advisories
4
Busiest month
June64 alerts
Busiest day
May 11, 20119 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 5 tornado warnings covering Oconee County in 2011 had a tornado report inside them.

Oconee County, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings5180%0
Severe thunderstorm warnings595114%4791%26 min
Flash flood warnings110%0

Each office's whole area, 2011

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Greenville-Spartanburg, SC: tornado warnings421174%2596%21 min
NWS Greenville-Spartanburg, SC: severe thunderstorm warnings69355120%1,30989%26 min
NWS Greenville-Spartanburg, SC: flash flood warnings312035%4685%105 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 9, 11:56 PM ESTMesoscale DiscussionSPC5 hr
Feb 28, 1:29 PM ESTTornado WatchSPC7 hr
Feb 28, 3:57 PM ESTSevere Thunderstorm WarningGSP63 min
Feb 28, 4:36 PM ESTMesoscale DiscussionSPC84 min
Feb 28, 4:38 PM ESTSevere Thunderstorm WarningGSP67 min
Mar 6, 12:35 AM ESTAreal Flood AdvisoryGSP115 min
Mar 6, 2:47 AM ESTAreal Flood AdvisoryGSP103 min
Mar 6, 4:17 AM ESTFlash Flood WarningGSP6 hr
Mar 6, 9:49 AM ESTAreal Flood WarningGSP3 hr
Mar 6, 12:29 PM ESTAreal Flood AdvisoryGSP3 hr
Mar 19, 3:03 PM EDTSpecial Weather StatementGSP42 min
Mar 19, 7:20 PM EDTSpecial Weather StatementGSP40 min
Mar 19, 8:07 PM EDTSevere Thunderstorm WarningGSP53 min
Mar 26, 8:55 PM EDTMesoscale DiscussionSPC95 min
Mar 26, 9:19 PM EDTSevere Thunderstorm WatchSPC8 hr
Apr 4, 9:32 PM EDTMesoscale DiscussionSPC58 min
Apr 4, 9:45 PM EDTSevere Thunderstorm WatchSPC5 hr
Apr 4, 11:06 PM EDTSevere Thunderstorm WarningGSP54 min
Apr 4, 11:28 PM EDTSevere Thunderstorm WarningGSP62 min
Apr 5, 12:20 AM EDTSevere Thunderstorm WarningGSP55 min
Apr 9, 1:34 PM EDTMesoscale DiscussionSPC86 min
Apr 9, 2:44 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 9, 3:43 PM EDTSevere Thunderstorm WarningGSP62 min
Apr 9, 4:29 PM EDTSevere Thunderstorm WarningGSP46 min
Apr 11, 7:42 PM EDTMesoscale DiscussionSPC33 min
Apr 11, 8:08 PM EDTTornado WatchSPC7 hr
Apr 11, 9:23 PM EDTMesoscale DiscussionSPC97 min
Apr 12, 1:35 AM EDTSpecial Weather StatementGSP25 min
Apr 12, 1:55 AM EDTSpecial Weather StatementGSP50 min
Apr 12, 2:39 AM EDTMesoscale DiscussionSPC36 min
Apr 15, 11:01 PM EDTSpecial Weather StatementGSP44 min
Apr 16, 5:57 AM EDTTornado WatchSPC8 hr
Apr 20, 7:55 AM EDTSevere Thunderstorm WatchSPC3 hr
Apr 20, 8:57 AM EDTSevere Thunderstorm WarningGSP50 min
Apr 20, 9:42 AM EDTSpecial Weather StatementGSP48 min
Apr 21, 3:43 PM EDTSpecial Weather StatementGSP32 min
Apr 21, 4:16 PM EDTSpecial Weather StatementGSP29 min
Apr 21, 4:58 PM EDTSpecial Weather StatementGSP32 min
Apr 25, 3:54 PM EDTSpecial Weather StatementGSP51 min
Apr 25, 4:11 PM EDTSevere Thunderstorm WarningGSP51 min
Apr 25, 5:37 PM EDTSevere Thunderstorm WarningGSP68 min
Apr 27, 6:41 PM EDTMesoscale DiscussionSPC34 min
Apr 27, 6:52 PM EDTTornado Watch PDSSPC9 hr
Apr 27, 11:22 PM EDTTornado WarningGSP38 min
Apr 28, 12:04 AM EDTTornado WarningGSP41 min
Apr 28, 12:09 AM EDTMesoscale DiscussionSPC36 min
Apr 28, 12:21 AM EDTTornado WarningGSP39 min
Apr 28, 12:54 AM EDTTornado WarningGSP51 min
Apr 28, 12:56 AM EDTTornado WatchSPC4 hr
Apr 28, 1:31 AM EDTTornado WarningGSP44 min
May 3, 4:45 PM EDTSpecial Weather StatementGSP45 min
May 3, 5:14 PM EDTSpecial Weather StatementGSP46 min
May 3, 7:02 PM EDTSevere Thunderstorm WarningGSP32 min
May 10, 10:18 PM EDTMesoscale DiscussionSPC27 min
May 11, 4:09 PM EDTSevere Thunderstorm WarningGSP66 min
May 11, 4:59 PM EDTSevere Thunderstorm WarningGSP61 min
May 11, 5:13 PM EDTSevere Thunderstorm WarningGSP32 min
May 11, 5:28 PM EDTSevere Thunderstorm WarningGSP62 min
May 11, 6:06 PM EDTMesoscale DiscussionSPC54 min
May 11, 6:21 PM EDTSevere Thunderstorm WarningGSP54 min
May 11, 6:49 PM EDTSevere Thunderstorm WarningGSP56 min
May 11, 6:54 PM EDTSevere Thunderstorm WarningGSP66 min
May 12, 4:28 PM EDTMesoscale DiscussionSPC2 hr
May 12, 5:57 PM EDTSpecial Weather StatementGSP48 min
May 12, 7:04 PM EDTSevere Thunderstorm WarningGSP56 min
May 13, 3:47 PM EDTMesoscale DiscussionSPC58 min
May 13, 4:44 PM EDTSevere Thunderstorm WatchSPC8 hr
May 13, 4:52 PM EDTSevere Thunderstorm WarningGSP53 min
May 13, 5:37 PM EDTSevere Thunderstorm WarningGSP53 min
May 17, 5:31 PM EDTSpecial Weather StatementGSP29 min
May 17, 5:58 PM EDTSevere Thunderstorm WarningGSP62 min
May 26, 10:15 AM EDTSevere Thunderstorm WatchSPC9 hr
May 26, 3:32 PM EDTMesoscale DiscussionSPC58 min
May 26, 4:36 PM EDTMesoscale DiscussionSPC84 min
May 26, 5:10 PM EDTSevere Thunderstorm WatchSPC7 hr
May 26, 6:20 PM EDTSpecial Weather StatementGSP40 min
May 26, 7:10 PM EDTSevere Thunderstorm WarningGSP65 min
May 26, 7:20 PM EDTSevere Thunderstorm WarningGSP55 min
May 26, 7:39 PM EDTSevere Thunderstorm WarningGSP66 min
Jun 1, 5:14 PM EDTSevere Thunderstorm WarningGSP36 min
Jun 2, 2:25 PM EDTSevere Thunderstorm WarningGSP65 min
Jun 2, 2:50 PM EDTMesoscale DiscussionSPC115 min
Jun 3, 4:12 PM EDTSevere Thunderstorm WarningGSP63 min
Jun 3, 5:54 PM EDTMesoscale DiscussionSPC2 hr
Jun 5, 5:45 PM EDTMesoscale DiscussionSPC60 min
Jun 5, 5:52 PM EDTSpecial Weather StatementGSP38 min
Jun 5, 6:06 PM EDTSevere Thunderstorm WarningGSP54 min
Jun 5, 6:59 PM EDTSevere Thunderstorm WarningGSP61 min
Jun 7, 6:04 PM EDTMesoscale DiscussionSPC116 min
Jun 8, 3:32 PM EDTSevere Thunderstorm WarningGSP58 min
Jun 9, 1:10 PM EDTMesoscale DiscussionSPC95 min
Jun 10, 5:21 PM EDTSevere Thunderstorm WarningGSP54 min
Jun 10, 6:38 PM EDTSevere Thunderstorm WarningGSP67 min
Jun 11, 3:06 AM EDTSpecial Weather StatementGSP24 min
Jun 11, 1:48 PM EDTMesoscale DiscussionSPC87 min
Jun 11, 2:18 PM EDTSpecial Weather StatementGSP42 min
Jun 11, 3:05 PM EDTSevere Thunderstorm WarningGSP55 min
Jun 11, 6:35 PM EDTSevere Thunderstorm WarningGSP55 min
Jun 12, 2:51 PM EDTSevere Thunderstorm WarningGSP54 min
Jun 12, 3:07 PM EDTSevere Thunderstorm WarningGSP53 min
Jun 12, 3:59 PM EDTSevere Thunderstorm WarningGSP61 min
Jun 12, 4:36 PM EDTSevere Thunderstorm WarningGSP54 min
Jun 15, 12:52 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 15, 4:34 PM EDTMesoscale DiscussionSPC116 min
Jun 15, 5:46 PM EDTSevere Thunderstorm WarningGSP29 min
Jun 15, 6:53 PM EDTMesoscale DiscussionSPC97 min
Jun 15, 7:06 PM EDTSevere Thunderstorm WarningGSP54 min
Jun 18, 9:38 AM EDTMesoscale DiscussionSPC97 min
Jun 18, 11:05 AM EDTSevere Thunderstorm WatchSPC9 hr
Jun 18, 1:43 PM EDTSevere Thunderstorm WarningGSP62 min
Jun 18, 2:21 PM EDTMesoscale DiscussionSPC84 min
Jun 18, 2:35 PM EDTSevere Thunderstorm WarningGSP70 min
Jun 18, 3:42 PM EDTSevere Thunderstorm WarningGSP48 min
Jun 18, 6:11 PM EDTSevere Thunderstorm WarningGSP51 min
Jun 19, 2:22 PM EDTSevere Thunderstorm WatchSPC5 hr
Jun 19, 3:36 PM EDTSpecial Weather StatementGSP39 min
Jun 19, 4:13 PM EDTMesoscale DiscussionSPC62 min
Jun 19, 6:58 PM EDTMesoscale DiscussionSPC62 min
Jun 19, 9:41 PM EDTSevere Thunderstorm WatchSPC5 hr
Jun 19, 11:55 PM EDTSevere Thunderstorm WarningGSP50 min
Jun 20, 12:31 AM EDTSevere Thunderstorm WarningGSP44 min
Jun 21, 2:11 PM EDTMesoscale DiscussionSPC64 min
Jun 22, 4:44 PM EDTMesoscale DiscussionSPC91 min
Jun 22, 5:30 PM EDTSevere Thunderstorm WarningGSP60 min
Jun 22, 5:38 PM EDTSevere Thunderstorm WatchSPC5 hr
Jun 22, 6:08 PM EDTSevere Thunderstorm WarningGSP52 min
Jun 22, 6:11 PM EDTSevere Thunderstorm WarningGSP64 min
Jun 23, 8:28 AM EDTSpecial Weather StatementGSP47 min
Jun 24, 1:44 PM EDTSpecial Weather StatementGSP46 min
Jun 24, 2:29 PM EDTSpecial Weather StatementGSP46 min
Jun 24, 3:17 PM EDTSpecial Weather StatementGSP43 min
Jun 24, 3:40 PM EDTSevere Thunderstorm WarningGSP65 min
Jun 24, 4:42 PM EDTMesoscale DiscussionSPC93 min
Jun 24, 4:53 PM EDTSpecial Weather StatementGSP52 min
Jun 26, 11:34 AM EDTMesoscale DiscussionSPC56 min
Jun 26, 1:36 PM EDTSevere Thunderstorm WatchSPC7 hr
Jun 26, 4:14 PM EDTMesoscale DiscussionSPC61 min
Jun 26, 5:20 PM EDTSpecial Weather StatementGSP40 min
Jun 26, 5:23 PM EDTSevere Thunderstorm WarningGSP67 min
Jun 26, 6:29 PM EDTMesoscale DiscussionSPC46 min
Jun 26, 8:09 PM EDTSpecial Weather StatementGSP36 min
Jun 26, 8:24 PM EDTMesoscale DiscussionSPC66 min
Jun 27, 4:47 PM EDTSevere Thunderstorm WarningGSP58 min
Jul 4, 2:13 PM EDTSevere Thunderstorm WarningGSP50 min
Jul 5, 3:01 PM EDTSpecial Weather StatementGSP44 min
Jul 5, 3:49 PM EDTSpecial Weather StatementGSP26 min
Jul 5, 4:00 PM EDTSpecial Weather StatementGSP30 min
Jul 13, 4:00 PM EDTSpecial Weather StatementGSP45 min
Aug 4, 5:50 PM EDTSpecial Weather StatementGSP25 min
Aug 8, 3:35 PM EDTSevere Thunderstorm WarningGSP55 min
Aug 12, 1:46 PM EDTMesoscale DiscussionSPC2 hr
Aug 12, 8:38 PM EDTSevere Thunderstorm WarningGSP67 min
Aug 13, 2:25 PM EDTSevere Thunderstorm WarningGSP65 min
Aug 13, 4:20 PM EDTMesoscale DiscussionSPC115 min
Aug 14, 1:34 PM EDTSpecial Weather StatementGSP41 min
Aug 14, 1:43 PM EDTSevere Thunderstorm WarningGSP62 min
Aug 14, 1:50 PM EDTMesoscale DiscussionSPC55 min
Aug 14, 2:07 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 18, 2:59 PM EDTMesoscale DiscussionSPC2 hr
Aug 21, 6:09 PM EDTSpecial Weather StatementGSP51 min
Sep 2, 2:31 PM EDTMesoscale DiscussionSPC59 min
Sep 5, 3:42 PM EDTTornado WatchSPC7 hr
Sep 5, 7:37 PM EDTMesoscale DiscussionSPC113 min
Nov 16, 1:17 PM ESTMesoscale DiscussionSPC118 min
Nov 16, 1:35 PM ESTTornado WatchSPC7 hr
Nov 16, 2:50 PM ESTSpecial Weather StatementGSP40 min
Nov 22, 4:24 PM ESTMesoscale DiscussionSPC2 hr
Dec 22, 2:02 PM ESTMesoscale DiscussionSPC118 min
Dec 22, 3:20 PM ESTTornado WatchSPC6 hr
Dec 22, 6:25 PM ESTMesoscale DiscussionSPC95 min
Dec 22, 10:52 PM ESTAreal Flood AdvisoryGSP6 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 archive20102012

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.