Alert archive / North Carolina / Jackson County

Weather alerts in Jackson County, North Carolina, 2020

131 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Jackson County and its neighbors

Each county as a circle sized by its count in 2020. Tap one for its archive.

Alerts
131
Warnings
19
Watches
22
Advisories
47
Busiest month
April23 alerts
Busiest day
April 13, 20209 alerts

Over time

By month

Warning verification

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

Jackson County, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings8450%2100%22 min
Flash flood warnings4250%863%23 min

Each office's whole area, 2020

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Greenville-Spartanburg, SC: tornado warnings611379%2572%14 min
NWS Greenville-Spartanburg, SC: severe thunderstorm warnings32518344%52075%21 min
NWS Greenville-Spartanburg, SC: flash flood warnings794247%13871%121 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 4, 4:02 AM ESTWind AdvisoryGSP30 hr
Jan 10, 2:47 PM ESTWind AdvisoryGSP34 hr
Jan 11, 4:48 PM ESTMesoscale DiscussionSPC117 min
Jan 11, 5:38 PM ESTTornado WatchSPC6 hr
Jan 11, 6:10 PM ESTSevere Thunderstorm WarningGSP41 min
Jan 11, 6:31 PM ESTSevere Thunderstorm WarningGSP44 min
Jan 11, 6:36 PM ESTMesoscale DiscussionSPC84 min
Jan 14, 4:53 AM ESTDense Fog AdvisoryGSP5 hr
Jan 19, 2:37 PM ESTWind Chill AdvisoryGSP19 hr
Jan 23, 2:36 PM ESTWind AdvisoryGSP24 hr
Jan 27, 3:36 AM ESTWinter Weather AdvisoryGSP23 hr
Feb 5, 4:20 AM ESTFlash Flood WatchGSP44 hr
Feb 6, 6:13 AM ESTFlash Flood WarningGSP10 hr
Feb 6, 4:20 PM ESTAreal Flood WarningGSP6 hr
Feb 6, 9:47 PM ESTWind AdvisoryGSP20 hr
Feb 7, 2:46 PM ESTWinter Weather AdvisoryGSP30 hr
Feb 9, 12:30 AM ESTFreezing Fog AdvisoryGSP10 hr
Feb 9, 3:27 AM ESTFlood WatchGSP36 hr
Feb 10, 3:01 PM ESTFlash Flood WatchGSP23 hr
Feb 12, 3:45 AM ESTFlash Flood WatchGSP34 hr
Feb 13, 8:03 AM ESTAreal Flood AdvisoryGSP6 hr
Feb 19, 3:11 PM ESTWinter Weather AdvisoryGSP33 hr
Feb 26, 3:51 AM ESTWind AdvisoryGSP39 hr
Feb 27, 2:50 PM ESTWinter Weather AdvisoryGSP45 hr
Mar 5, 8:57 PM ESTWind AdvisoryGSP36 hr
Mar 6, 1:00 AM ESTDense Fog AdvisoryGSP3 hr
Mar 18, 2:29 AM EDTDense Fog AdvisoryGSP9 hr
Mar 25, 12:51 AM EDTAreal Flood AdvisoryGSP3 hr
Apr 8, 11:16 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 9, 3:00 AM EDTSpecial Weather StatementGSP45 min
Apr 9, 9:35 PM EDTWind AdvisoryGSP20 hr
Apr 12, 3:56 AM EDTWind AdvisoryGSP36 hr
Apr 12, 4:12 AM EDTFlash Flood WatchGSP28 hr
Apr 12, 8:41 PM EDTMesoscale DiscussionSPC64 min
Apr 12, 8:57 PM EDTTornado WatchSPC6 hr
Apr 12, 11:17 PM EDTMesoscale DiscussionSPC88 min
Apr 12, 11:39 PM EDTAreal Flood AdvisoryGSP6 hr
Apr 13, 12:10 AM EDTAreal Flood AdvisoryGSP5 hr
Apr 13, 1:09 AM EDTAreal Flood AdvisoryGSP4 hr
Apr 13, 1:51 AM EDTTornado WatchSPC6 hr
Apr 13, 1:58 AM EDTFlash Flood WarningGSP6 hr
Apr 13, 3:13 AM EDTFlash Flood WarningGSP5 hr
Apr 21, 3:03 AM EDTFrost AdvisoryGSP31 hr
Apr 23, 2:58 AM EDTWind AdvisoryGSP17 hr
Apr 25, 6:11 PM EDTTornado WatchSPC4 hr
Apr 25, 7:06 PM EDTSevere Thunderstorm WarningGSP39 min
Apr 25, 8:15 PM EDTSevere Thunderstorm WarningGSP45 min
Apr 27, 2:50 PM EDTFrost AdvisoryGSP18 hr
Apr 29, 3:49 PM EDTSpecial Weather StatementGSP41 min
Apr 29, 5:37 PM EDTSpecial Weather StatementGSP38 min
Apr 29, 8:42 PM EDTSpecial Weather StatementGSP48 min
May 5, 3:22 PM EDTMesoscale DiscussionSPC113 min
May 5, 3:52 PM EDTSevere Thunderstorm WarningGSP38 min
May 5, 3:53 PM EDTSevere Thunderstorm WatchSPC7 hr
May 5, 4:01 PM EDTSpecial Weather StatementGSP29 min
May 6, 7:19 PM EDTFrost AdvisoryGSP14 hr
May 7, 3:42 AM EDTFreeze WatchGSP25 hr
May 8, 4:12 AM EDTFreeze WarningGSP30 hr
May 8, 2:49 PM EDTFreeze WatchGSP13 hr
May 9, 4:10 AM EDTFreeze WarningGSP30 hr
May 11, 2:37 PM EDTFrost AdvisoryGSP19 hr
May 23, 2:55 AM EDTDense Fog AdvisoryGSP6 hr
May 24, 12:58 PM EDTAreal Flood AdvisoryGSP3 hr
May 25, 4:49 PM EDTAreal Flood AdvisoryGSP3 hr
Jun 4, 2:08 PM EDTAreal Flood AdvisoryGSP112 min
Jun 4, 3:19 PM EDTSpecial Weather StatementGSP26 min
Jun 4, 7:22 PM EDTSpecial Weather StatementGSP38 min
Jun 14, 12:34 PM EDTMesoscale DiscussionSPC116 min
Jun 14, 3:25 PM EDTSpecial Weather StatementGSP35 min
Jun 15, 1:45 PM EDTMesoscale DiscussionSPC2 hr
Jun 15, 1:59 PM EDTSpecial Weather StatementGSP46 min
Jun 21, 7:11 PM EDTSpecial Weather StatementGSP49 min
Jun 22, 5:28 PM EDTSpecial Weather StatementGSP32 min
Jun 28, 12:49 PM EDTMesoscale DiscussionSPC2 hr
Jul 3, 10:09 PM EDTFlash Flood WarningGSP4 hr
Jul 4, 3:34 PM EDTSpecial Weather StatementGSP41 min
Jul 4, 5:00 PM EDTSevere Thunderstorm WarningGSP30 min
Jul 9, 3:41 PM EDTSpecial Weather StatementGSP34 min
Jul 17, 1:47 PM EDTMesoscale DiscussionSPC118 min
Jul 18, 12:43 PM EDTMesoscale DiscussionSPC2 hr
Jul 19, 2:27 PM EDTSpecial Weather StatementGSP33 min
Jul 19, 3:04 PM EDTSpecial Weather StatementGSP26 min
Jul 19, 3:29 PM EDTSpecial Weather StatementGSP31 min
Jul 20, 12:57 PM EDTMesoscale DiscussionSPC2 hr
Jul 20, 8:22 PM EDTSpecial Weather StatementGSP38 min
Jul 21, 1:00 PM EDTMesoscale DiscussionSPC2 hr
Jul 21, 1:43 PM EDTSevere Thunderstorm WarningGSP47 min
Jul 21, 2:32 PM EDTSpecial Weather StatementGSP28 min
Jul 21, 2:34 PM EDTSevere Thunderstorm WarningGSP41 min
Jul 23, 1:11 PM EDTMesoscale DiscussionSPC2 hr
Jul 23, 1:51 PM EDTSpecial Weather StatementGSP24 min
Jul 24, 1:13 PM EDTSpecial Weather StatementGSP32 min
Jul 24, 1:43 PM EDTMesoscale DiscussionSPC92 min
Jul 25, 2:37 PM EDTSpecial Weather StatementGSP38 min
Jul 28, 6:58 PM EDTSpecial Weather StatementGSP32 min
Jul 31, 5:29 PM EDTSpecial Weather StatementGSP46 min
Jul 31, 6:23 PM EDTSpecial Weather StatementGSP37 min
Jul 31, 9:24 PM EDTSpecial Weather StatementGSP51 min
Aug 2, 2:18 PM EDTMesoscale DiscussionSPC57 min
Aug 3, 9:23 AM EDTAreal Flood AdvisoryGSP3 hr
Aug 5, 1:37 PM EDTMesoscale DiscussionSPC113 min
Aug 6, 2:08 PM EDTMesoscale DiscussionSPC3 hr
Aug 12, 8:08 PM EDTSpecial Weather StatementGSP37 min
Aug 21, 4:01 AM EDTFlash Flood WatchGSP26 hr
Aug 23, 3:08 AM EDTAreal Flood AdvisoryGSP3 hr
Sep 16, 4:28 AM EDTFlood WatchGSP46 min
Sep 16, 5:14 AM EDTFlash Flood WatchGSP39 hr
Oct 10, 4:19 AM EDTFlash Flood WatchGSP42 hr
Oct 11, 2:49 AM EDTAreal Flood AdvisoryGSP6 hr
Oct 16, 3:44 AM EDTFreeze WatchGSP7 hr
Oct 16, 11:11 AM EDTFrost AdvisoryGSP23 hr
Oct 16, 11:11 AM EDTFreeze WarningGSP23 hr
Oct 17, 2:43 PM EDTFrost AdvisoryGSP18 hr
Oct 28, 6:08 AM EDTFlash Flood WatchGSP32 hr
Oct 28, 11:23 AM EDTTropical Storm WatchGSP3 hr
Oct 28, 2:13 PM EDTTropical Storm WarningGSP24 hr
Oct 29, 6:14 AM EDTAreal Flood AdvisoryGSP6 hr
Oct 29, 8:04 PM EDTWind AdvisoryGSP16 hr
Oct 30, 2:46 PM EDTFrost AdvisoryGSP19 hr
Nov 1, 3:58 AM ESTFreeze WarningGSP29 hr
Nov 1, 3:58 AM ESTWind AdvisoryGSP32 hr
Nov 10, 2:30 PM ESTFlood WatchGSP47 hr
Nov 15, 1:55 AM ESTWind AdvisoryGSP32 hr
Dec 15, 4:31 AM ESTWinter Weather AdvisoryGSP41 hr
Dec 21, 3:14 AM ESTWind AdvisoryGSP33 hr
Dec 21, 2:45 PM ESTHigh Wind WarningGSP21 hr
Dec 23, 3:33 AM ESTWind AdvisoryGSP32 hr
Dec 23, 3:17 PM ESTWinter Weather AdvisoryGSP49 hr
Dec 24, 2:59 AM ESTFlash Flood WatchGSP12 hr
Dec 24, 4:04 AM ESTWind Chill AdvisoryGSP53 hr
Dec 24, 10:40 AM ESTAreal Flood AdvisoryGSP5 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 archive20192021

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.