Alert archive / North Carolina / Alexander County

Weather alerts in Alexander County, North Carolina, 2018

152 weather alerts in 2018, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Alexander County and its neighbors

Each county as a circle sized by its count in 2018. Tap one for its archive.

Alerts
152
Warnings
21
Watches
18
Advisories
58
Busiest month
August28 alerts
Busiest day
April 15, 20187 alerts

Over time

By month

Warning verification

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

Alexander County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings14936%5100%21 min
Flash flood warnings110%0

Each office's whole area, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Greenville-Spartanburg, SC: tornado warnings7186%367%5 min
NWS Greenville-Spartanburg, SC: severe thunderstorm warnings34724430%60087%20 min
NWS Greenville-Spartanburg, SC: flash flood warnings745328%17783%159 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, 3:29 AM ESTWind Chill AdvisoryGSP33 hr
Jan 5, 3:57 AM ESTWind Chill AdvisoryGSP31 hr
Jan 7, 2:51 PM ESTWinter Weather AdvisoryGSP24 hr
Jan 11, 6:37 PM ESTDense Fog AdvisoryGSP15 hr
Jan 15, 3:32 PM ESTWinter Weather AdvisoryGSP4 days
Jan 16, 3:03 PM ESTWinter Storm WarningGSP27 hr
Jan 18, 1:42 PM ESTWinter Weather AdvisoryGSP22 hr
Feb 3, 3:28 AM ESTWinter Weather AdvisoryGSP33 hr
Feb 4, 5:59 AM ESTMesoscale DiscussionSPC4 hr
Feb 4, 11:44 PM ESTDense Fog AdvisoryGSP9 hr
Feb 9, 3:46 AM ESTFlood WatchGSP3 days
Feb 11, 8:32 AM ESTSpecial Weather StatementGSP58 min
Feb 11, 8:53 AM ESTAreal Flood AdvisoryGSP3 hr
Feb 18, 3:52 AM ESTDense Fog AdvisoryGSP5 hr
Feb 19, 10:44 PM ESTDense Fog AdvisoryGSP13 hr
Mar 1, 2:53 PM ESTWind AdvisoryGSP29 hr
Mar 11, 4:02 AM EDTWinter Weather AdvisoryGSP54 hr
Mar 13, 3:27 AM EDTWinter Weather AdvisoryGSP33 hr
Mar 20, 4:31 AM EDTWinter Weather AdvisoryGSP45 hr
Mar 20, 5:32 AM EDTDense Fog AdvisoryGSP4 hr
Mar 23, 3:21 PM EDTWinter Storm WarningGSP37 hr
Mar 23, 3:21 PM EDTWinter Weather AdvisoryGSP37 hr
Apr 15, 3:43 AM EDTFlash Flood WatchGSP16 hr
Apr 15, 11:15 AM EDTMesoscale DiscussionSPC2 hr
Apr 15, 12:13 PM EDTTornado WatchSPC9 hr
Apr 15, 1:13 PM EDTSevere Thunderstorm WarningGSP32 min
Apr 15, 1:50 PM EDTSpecial Weather StatementGSP25 min
Apr 15, 2:14 PM EDTSpecial Weather StatementGSP31 min
Apr 15, 2:47 PM EDTSpecial Weather StatementGSP28 min
Apr 15, 8:11 PM EDTFlash Flood WatchGSP3 hr
Apr 15, 8:58 PM EDTAreal Flood AdvisoryGSP2 hr
Apr 16, 2:35 PM EDTFrost AdvisoryGSP18 hr
Apr 19, 10:06 PM EDTFrost AdvisoryGSP11 hr
Apr 24, 11:50 AM EDTAreal Flood AdvisoryGSP8 hr
Apr 24, 7:38 PM EDTAreal Flood AdvisoryGSP12 hr
Apr 25, 7:30 AM EDTAreal Flood AdvisoryGSP54 hr
Apr 27, 3:57 AM EDTDense Fog AdvisoryGSP5 hr
May 7, 8:26 PM EDTSpecial Weather StatementGSP34 min
May 10, 4:18 PM EDTSpecial Weather StatementGSP42 min
May 10, 4:23 PM EDTSevere Thunderstorm WatchSPC6 hr
May 10, 4:31 PM EDTSevere Thunderstorm WarningGSP44 min
May 16, 5:19 PM EDTSpecial Weather StatementGSP56 min
May 16, 11:02 PM EDTSpecial Weather StatementGSP28 min
May 18, 11:07 AM EDTSpecial Weather StatementGSP53 min
May 19, 8:40 AM EDTAreal Flood AdvisoryGSP12 hr
May 19, 8:25 PM EDTAreal Flood AdvisoryGSP18 hr
May 20, 3:52 PM EDTAreal Flood AdvisoryGSP6 hr
May 20, 4:17 PM EDTSpecial Weather StatementGSP28 min
May 20, 4:41 PM EDTSpecial Weather StatementGSP34 min
May 20, 4:51 PM EDTAreal Flood AdvisoryGSP114 min
May 20, 5:11 PM EDTSpecial Weather StatementGSP34 min
May 21, 6:36 PM EDTSpecial Weather StatementGSP39 min
May 23, 7:38 PM EDTSpecial Weather StatementGSP37 min
May 27, 4:44 AM EDTFlash Flood WatchGSP5 days
May 29, 11:15 AM EDTAreal Flood AdvisoryGSP3 hr
May 29, 5:06 PM EDTSpecial Weather StatementGSP39 min
May 30, 3:10 AM EDTAreal Flood AdvisoryGSP24 hr
May 31, 4:05 AM EDTAreal Flood AdvisoryGSP28 hr
May 31, 2:55 PM EDTSpecial Weather StatementGSP50 min
Jun 1, 11:13 AM EDTAreal Flood AdvisoryGSP62 hr
Jun 1, 4:13 PM EDTSevere Thunderstorm WarningGSP47 min
Jun 1, 4:44 PM EDTMesoscale DiscussionSPC3 hr
Jun 10, 3:23 PM EDTMesoscale DiscussionSPC2 hr
Jun 10, 6:33 PM EDTSpecial Weather StatementGSP27 min
Jun 20, 8:29 PM EDTSpecial Weather StatementGSP46 min
Jun 22, 6:36 AM EDTDense Fog AdvisoryGSP2 hr
Jun 22, 3:19 PM EDTMesoscale DiscussionSPC86 min
Jun 25, 12:29 PM EDTMesoscale DiscussionSPC61 min
Jun 25, 1:02 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 25, 5:22 PM EDTSevere Thunderstorm WarningGSP38 min
Jun 25, 5:57 PM EDTSevere Thunderstorm WarningGSP48 min
Jun 25, 6:23 PM EDTMesoscale DiscussionSPC2 hr
Jul 1, 9:22 PM EDTSpecial Weather StatementGSP23 min
Jul 5, 6:53 PM EDTSpecial Weather StatementGSP37 min
Jul 21, 5:54 PM EDTSevere Thunderstorm WarningGSP51 min
Jul 21, 6:38 PM EDTSevere Thunderstorm WarningGSP52 min
Jul 22, 5:18 PM EDTSpecial Weather StatementGSP27 min
Jul 22, 5:46 PM EDTSpecial Weather StatementGSP14 min
Jul 23, 3:03 PM EDTFlash Flood WatchGSP33 hr
Jul 25, 1:04 PM EDTSpecial Weather StatementGSP41 min
Jul 26, 1:41 AM EDTDense Fog AdvisoryGSP7 hr
Jul 31, 3:58 AM EDTFlash Flood WatchGSP4 days
Jul 31, 1:51 PM EDTAreal Flood AdvisoryGSP114 min
Jul 31, 4:43 PM EDTAreal Flood AdvisoryGSP2 hr
Jul 31, 6:41 PM EDTAreal Flood AdvisoryGSP3 hr
Aug 2, 1:25 PM EDTSpecial Weather StatementGSP65 min
Aug 2, 6:06 PM EDTSpecial Weather StatementGSP39 min
Aug 2, 6:36 PM EDTSpecial Weather StatementGSP39 min
Aug 2, 6:40 PM EDTAreal Flood AdvisoryGSP110 min
Aug 2, 7:13 PM EDTSpecial Weather StatementGSP47 min
Aug 3, 1:37 PM EDTAreal Flood AdvisoryGSP113 min
Aug 4, 7:37 PM EDTSpecial Weather StatementGSP38 min
Aug 4, 7:49 PM EDTSpecial Weather StatementRNK26 min
Aug 4, 8:16 PM EDTAreal Flood AdvisoryGSP119 min
Aug 4, 10:10 PM EDTAreal Flood AdvisoryGSP110 min
Aug 5, 6:18 PM EDTSpecial Weather StatementGSP27 min
Aug 6, 1:43 PM EDTSpecial Weather StatementGSP62 min
Aug 6, 1:51 PM EDTSevere Thunderstorm WarningGSP54 min
Aug 6, 2:50 PM EDTSpecial Weather StatementGSP25 min
Aug 8, 2:55 PM EDTSpecial Weather StatementGSP35 min
Aug 8, 5:06 PM EDTSevere Thunderstorm WarningGSP39 min
Aug 8, 5:30 PM EDTSevere Thunderstorm WarningGSP45 min
Aug 8, 5:48 PM EDTSevere Thunderstorm WarningGSP57 min
Aug 8, 6:20 PM EDTAreal Flood AdvisoryGSP115 min
Aug 12, 3:07 PM EDTSpecial Weather StatementGSP23 min
Aug 20, 7:48 PM EDTSpecial Weather StatementGSP42 min
Aug 21, 3:18 PM EDTSevere Thunderstorm WarningGSP42 min
Aug 21, 3:53 PM EDTMesoscale DiscussionSPC2 hr
Aug 21, 3:59 PM EDTSevere Thunderstorm WarningGSP46 min
Aug 30, 5:29 PM EDTSpecial Weather StatementGSP31 min
Aug 30, 9:54 PM EDTSpecial Weather StatementGSP36 min
Aug 31, 7:29 PM EDTSpecial Weather StatementGSP31 min
Aug 31, 7:49 PM EDTSpecial Weather StatementGSP26 min
Sep 1, 8:21 PM EDTSpecial Weather StatementGSP39 min
Sep 13, 3:09 PM EDTFlash Flood WatchGSP4 days
Sep 14, 5:36 PM EDTWind AdvisoryGSP48 hr
Sep 16, 5:20 PM EDTSpecial Weather StatementGSP55 min
Sep 27, 6:06 PM EDTSevere Thunderstorm WatchSPC4 hr
Sep 27, 6:35 PM EDTSpecial Weather StatementGSP25 min
Sep 27, 6:40 PM EDTSevere Thunderstorm WarningGSP50 min
Oct 9, 3:37 PM EDTFlash Flood WatchGSP52 hr
Oct 10, 5:19 AM EDTTropical Storm WarningGSP36 hr
Oct 11, 10:50 AM EDTFlash Flood WarningGSP4 hr
Oct 11, 3:02 PM EDTAreal Flood WarningGSP4 hr
Oct 11, 10:31 PM EDTAreal Flood AdvisoryGSP45 hr
Oct 20, 2:48 PM EDTFreeze WatchGSP13 hr
Oct 21, 4:14 AM EDTFreeze WarningGSP30 hr
Nov 5, 8:48 PM ESTDense Fog AdvisoryGSP10 hr
Nov 13, 3:11 PM ESTFlood WatchGSP52 hr
Nov 13, 3:25 PM ESTWinter Storm WatchGSP13 hr
Nov 14, 4:36 AM ESTWinter Weather AdvisoryGSP32 hr
Nov 23, 4:22 AM ESTWinter Weather AdvisoryGSP28 hr
Nov 23, 9:15 PM ESTMesoscale DiscussionSPC6 hr
Nov 24, 10:08 PM ESTDense Fog AdvisoryGSP12 hr
Dec 6, 4:05 PM ESTWinter Storm WatchGSP24 hr
Dec 7, 4:20 AM ESTWinter Storm WarningGSP3 days
Dec 8, 10:54 AM ESTWinter Weather AdvisoryGSP3 days
Dec 8, 10:32 PM ESTMesoscale DiscussionSPC5 hr
Dec 9, 3:08 AM ESTMesoscale DiscussionSPC5 hr
Dec 9, 8:18 AM ESTMesoscale DiscussionSPC5 hr
Dec 9, 12:34 PM ESTMesoscale DiscussionSPC5 hr
Dec 11, 3:11 PM ESTWinter Weather AdvisoryGSP21 hr
Dec 13, 3:12 PM ESTFlood WatchGSP48 hr
Dec 15, 6:36 PM ESTDense Fog AdvisoryGSP3 hr
Dec 21, 1:30 AM ESTDense Fog AdvisoryGSP5 hr
Dec 21, 2:04 AM ESTAreal Flood AdvisoryGSP12 hr
Dec 21, 1:59 PM ESTAreal Flood AdvisoryGSP24 hr
Dec 22, 1:56 PM ESTAreal Flood AdvisoryGSP7 hr
Dec 26, 3:01 PM ESTFlood WatchGSP52 hr
Dec 28, 2:13 PM ESTAreal Flood AdvisoryGSP5 hr
Dec 28, 5:51 PM ESTAreal Flood AdvisoryGSP41 hr
Dec 28, 9:14 PM ESTDense Fog AdvisoryGSP13 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 archive20172019

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.