Alert archive / South Carolina / Cherokee County

Weather alerts in Cherokee County, South Carolina, 2021

101 weather alerts in 2021, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Cherokee County and its neighbors

Each county as a circle sized by its count in 2021. Tap one for its archive.

Alerts
101
Warnings
22
Watches
5
Advisories
24
Busiest month
August29 alerts
Busiest day
August 17, 20217 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 6 tornado warnings covering Cherokee County in 2021 had a tornado report inside them.

Cherokee County, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings6183%0
Severe thunderstorm warnings12650%888%19 min
Flash flood warnings00

Each office's whole area, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Greenville-Spartanburg, SC: tornado warnings63887%2378%24 min
NWS Greenville-Spartanburg, SC: severe thunderstorm warnings1769546%26763%17 min
NWS Greenville-Spartanburg, SC: flash flood warnings472253%5770%94 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
Dec 31, 10:03 PM ESTDense Fog AdvisoryGSP9 hr
Jan 1, 2:12 PM ESTSpecial Weather StatementGSP63 min
Jan 1, 3:37 PM ESTSpecial Weather StatementGSP53 min
Jan 1, 4:51 PM ESTSpecial Weather StatementGSP39 min
Jan 2, 5:20 AM ESTDense Fog AdvisoryGSP7 hr
Jan 7, 2:51 PM ESTWinter Weather AdvisoryGSP29 hr
Jan 13, 3:01 AM ESTFreezing Fog AdvisoryGSP7 hr
Jan 25, 4:08 PM ESTDense Fog AdvisoryGSP11 hr
Jan 26, 1:55 AM ESTSpecial Weather StatementGSP35 min
Jan 26, 2:41 AM ESTSpecial Weather StatementGSP49 min
Jan 26, 6:41 PM ESTDense Fog AdvisoryGSP9 hr
Feb 6, 3:58 AM ESTWinter Weather AdvisoryGSP32 hr
Feb 6, 10:08 PM ESTMesoscale DiscussionSPC4 hr
Feb 11, 3:43 AM ESTDense Fog AdvisoryGSP8 hr
Feb 17, 4:15 AM ESTWinter Weather AdvisoryGSP30 hr
Feb 27, 11:30 PM ESTDense Fog AdvisoryGSP9 hr
Mar 18, 10:34 AM EDTMesoscale DiscussionSPC2 hr
Mar 18, 2:08 PM EDTTornado WatchSPC4 hr
Mar 18, 2:37 PM EDTTornado WarningGSP23 min
Mar 18, 3:10 PM EDTMesoscale DiscussionSPC3 hr
Mar 18, 3:17 PM EDTSevere Thunderstorm WarningGSP43 min
Mar 25, 4:01 PM EDTTornado WarningGSP44 min
Mar 25, 11:42 PM EDTSpecial Weather StatementGSP48 min
Mar 26, 3:21 AM EDTRiver Flood WarningGSP30 hr
Mar 27, 1:39 PM EDTMesoscale DiscussionSPC66 min
Mar 27, 3:24 PM EDTSpecial Weather StatementGSP51 min
Mar 31, 2:59 PM EDTFreeze WatchGSP12 hr
Apr 1, 3:27 AM EDTFreeze WarningGSP30 hr
Apr 2, 9:03 AM EDTFreeze WarningGSP24 hr
Apr 3, 9:08 AM EDTFrost AdvisoryGSP24 hr
Apr 10, 5:35 PM EDTMesoscale DiscussionSPC115 min
Apr 20, 1:30 PM EDTFire Weather WatchGSP14 hr
Apr 21, 3:45 AM EDTRed Flag WarningGSP16 hr
Apr 21, 2:44 PM EDTFrost AdvisoryGSP17 hr
Apr 22, 3:35 AM EDTFrost AdvisoryGSP29 hr
May 3, 11:58 AM EDTSpecial Weather StatementGSP32 min
May 3, 12:38 PM EDTTornado WarningGSP37 min
May 10, 4:42 PM EDTSpecial Weather StatementGSP33 min
May 28, 3:40 PM EDTSpecial Weather StatementGSP35 min
May 28, 4:06 PM EDTSpecial Weather StatementGSP24 min
May 28, 7:31 PM EDTSpecial Weather StatementGSP29 min
May 28, 10:24 PM EDTSpecial Weather StatementGSP36 min
Jun 5, 3:30 PM EDTSpecial Weather StatementGSP30 min
Jun 7, 2:36 PM EDTSpecial Weather StatementGSP24 min
Jun 7, 2:58 PM EDTSevere Thunderstorm WarningGSP47 min
Jun 11, 6:59 PM EDTSevere Thunderstorm WarningGSP46 min
Jun 11, 7:46 PM EDTSpecial Weather StatementGSP29 min
Jun 14, 4:00 PM EDTSevere Thunderstorm WarningGSP45 min
Jun 14, 4:10 PM EDTSpecial Weather StatementGSP50 min
Jun 14, 4:45 PM EDTSpecial Weather StatementGSP30 min
Jun 14, 5:00 PM EDTSevere Thunderstorm WarningGSP27 min
Jul 9, 1:38 PM EDTSpecial Weather StatementGSP37 min
Jul 12, 3:47 PM EDTSpecial Weather StatementGSP28 min
Jul 18, 10:54 PM EDTAreal Flood AdvisoryGSP3 hr
Jul 24, 9:01 PM EDTAreal Flood AdvisoryGSP3 hr
Jul 26, 5:04 PM EDTAreal Flood AdvisoryGSP3 hr
Jul 27, 6:52 AM EDTDense Fog AdvisoryGSP2 hr
Aug 1, 4:10 PM EDTSpecial Weather StatementGSP35 min
Aug 10, 6:36 PM EDTSevere Thunderstorm WarningGSP39 min
Aug 11, 5:17 PM EDTSevere Thunderstorm WarningGSP43 min
Aug 11, 5:42 PM EDTSpecial Weather StatementGSP33 min
Aug 11, 6:09 PM EDTSpecial Weather StatementGSP36 min
Aug 11, 6:18 PM EDTSevere Thunderstorm WarningGSP25 min
Aug 14, 1:47 PM EDTSpecial Weather StatementGSP28 min
Aug 16, 3:46 PM EDTSpecial Weather StatementGSP59 min
Aug 17, 10:42 AM EDTTornado WatchSPC8 hr
Aug 17, 12:35 PM EDTMesoscale DiscussionSPC85 min
Aug 17, 3:25 PM EDTMesoscale DiscussionSPC2 hr
Aug 17, 5:55 PM EDTMesoscale DiscussionSPC65 min
Aug 17, 6:28 PM EDTTornado WatchSPC10 hr
Aug 17, 6:46 PM EDTTornado WarningGSP44 min
Aug 17, 7:59 PM EDTTornado WarningGSP46 min
Aug 17, 8:00 PM EDTTornado WarningGSP45 min
Aug 17, 10:04 PM EDTMesoscale DiscussionSPC116 min
Aug 19, 5:07 PM EDTSpecial Weather StatementGSP23 min
Aug 19, 5:11 PM EDTSevere Thunderstorm WarningGSP49 min
Aug 21, 7:19 PM EDTSpecial Weather StatementGSP56 min
Aug 21, 8:09 PM EDTSevere Thunderstorm WarningGSP51 min
Aug 22, 2:15 AM EDTSpecial Weather StatementGSP60 min
Aug 22, 2:35 AM EDTAreal Flood AdvisoryGSP97 min
Aug 25, 6:27 PM EDTSpecial Weather StatementGSP33 min
Aug 25, 6:29 PM EDTSpecial Weather StatementGSP31 min
Aug 25, 7:03 PM EDTSpecial Weather StatementGSP27 min
Aug 25, 7:25 PM EDTSpecial Weather StatementGSP35 min
Aug 31, 4:23 PM EDTSevere Thunderstorm WarningGSP37 min
Aug 31, 4:53 PM EDTSevere Thunderstorm WarningGSP37 min
Sep 8, 5:38 AM EDTSpecial Weather StatementGSP52 min
Sep 8, 6:15 AM EDTSpecial Weather StatementGSP45 min
Sep 22, 2:44 PM EDTMesoscale DiscussionSPC3 hr
Oct 3, 8:50 PM EDTSpecial Weather StatementGSP40 min
Oct 29, 5:25 AM EDTSpecial Weather StatementGSP50 min
Nov 4, 3:23 AM EDTFrost AdvisoryGSP31 hr
Nov 7, 2:30 PM ESTFrost AdvisoryGSP19 hr
Dec 8, 10:56 PM ESTDense Fog AdvisoryGSP11 hr
Dec 10, 8:32 PM ESTDense Fog AdvisoryGSP15 hr
Dec 11, 3:08 PM ESTSpecial Weather StatementGSP67 min
Dec 11, 3:43 PM ESTSpecial Weather StatementGSP47 min
Dec 18, 3:29 AM ESTDense Fog AdvisoryGSP8 hr
Dec 25, 3:44 AM ESTWind AdvisoryGSP21 hr
Dec 29, 11:56 PM ESTMesoscale DiscussionSPC2 hr
Dec 30, 12:43 AM ESTSpecial Weather StatementGSP47 min

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 archive20202022

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.