Alert archive / North Carolina / Rowan County

Weather alerts in Rowan County, North Carolina, 2018

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

Rowan County and its neighbors

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

Alerts
193
Warnings
43
Watches
18
Advisories
43
Busiest month
September30 alerts
Busiest day
September 16, 201811 alerts

Over time

By month

Warning verification

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

Rowan County, 2018

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings252116%2584%24 min
Flash flood warnings7357%1100%210 min

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 12, 5:29 PM ESTSpecial Weather StatementGSP46 min
Jan 15, 3:32 PM ESTWinter Weather AdvisoryGSP4 days
Jan 16, 3:03 PM ESTWinter Storm WarningGSP27 hr
Jan 17, 7:21 AM ESTMesoscale DiscussionSPC5 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 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 Storm WarningGSP40 hr
Mar 11, 4:02 AM EDTWinter Weather AdvisoryGSP54 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 6, 4:29 AM EDTFreeze WatchGSP24 hr
Apr 7, 4:03 AM EDTFreeze WarningGSP29 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, 3:17 PM EDTMesoscale DiscussionSPC88 min
Apr 15, 3:25 PM EDTSevere Thunderstorm WarningGSP37 min
Apr 15, 3:41 PM EDTSevere Thunderstorm WarningGSP34 min
Apr 15, 3:55 PM EDTSevere Thunderstorm WarningGSP35 min
Apr 15, 4:14 PM EDTSevere Thunderstorm WarningGSP31 min
Apr 15, 5:45 PM EDTMesoscale DiscussionSPC90 min
Apr 15, 8:11 PM EDTFlash Flood WatchGSP3 hr
Apr 16, 2:35 PM EDTFrost AdvisoryGSP18 hr
Apr 19, 10:06 PM EDTFrost AdvisoryGSP11 hr
Apr 25, 6:34 AM EDTSpecial Weather StatementGSP56 min
Apr 27, 3:57 AM EDTDense Fog AdvisoryGSP5 hr
May 10, 3:35 PM EDTMesoscale DiscussionSPC115 min
May 10, 4:23 PM EDTSevere Thunderstorm WatchSPC6 hr
May 10, 5:15 PM EDTSevere Thunderstorm WarningGSP45 min
May 10, 6:00 PM EDTSpecial Weather StatementGSP30 min
May 10, 7:20 PM EDTMesoscale DiscussionSPC55 min
May 11, 6:42 PM EDTSpecial Weather StatementGSP48 min
May 11, 7:33 PM EDTSpecial Weather StatementGSP42 min
May 16, 3:16 PM EDTSpecial Weather StatementGSP59 min
May 16, 4:25 PM EDTSevere Thunderstorm WarningGSP21 min
May 16, 5:19 PM EDTSpecial Weather StatementGSP56 min
May 16, 6:37 PM EDTSpecial Weather StatementGSP23 min
May 16, 7:24 PM EDTSpecial Weather StatementGSP36 min
May 16, 8:10 PM EDTAreal Flood AdvisoryGSP89 min
May 20, 5:42 PM EDTSpecial Weather StatementGSP33 min
May 20, 6:13 PM EDTSpecial Weather StatementGSP32 min
May 20, 6:30 PM EDTFlash Flood WarningGSP2 hr
May 20, 6:36 PM EDTAreal Flood AdvisoryGSP3 hr
May 20, 6:40 PM EDTSpecial Weather StatementGSP35 min
May 21, 7:31 PM EDTSpecial Weather StatementGSP44 min
May 21, 8:05 PM EDTAreal Flood AdvisoryGSP3 hr
May 21, 8:16 PM EDTSpecial Weather StatementGSP44 min
May 23, 3:51 PM EDTMesoscale DiscussionSPC2 hr
May 23, 9:34 PM EDTSpecial Weather StatementGSP26 min
May 23, 11:17 PM EDTSpecial Weather StatementGSP28 min
May 27, 4:44 AM EDTFlash Flood WatchGSP5 days
Jun 1, 4:44 PM EDTMesoscale DiscussionSPC3 hr
Jun 1, 5:24 PM EDTSevere Thunderstorm WarningGSP47 min
Jun 2, 6:19 PM EDTSevere Thunderstorm WarningGSP41 min
Jun 3, 8:15 PM EDTSpecial Weather StatementGSP30 min
Jun 3, 8:25 PM EDTSevere Thunderstorm WarningGSP51 min
Jun 10, 3:23 PM EDTMesoscale DiscussionSPC2 hr
Jun 11, 12:02 AM EDTSpecial Weather StatementGSP28 min
Jun 11, 6:12 PM EDTSevere Thunderstorm WarningGSP63 min
Jun 14, 9:05 PM EDTSevere Thunderstorm WarningGSP40 min
Jun 20, 2:31 PM EDTSpecial Weather StatementGSP44 min
Jun 21, 8:16 PM EDTSpecial Weather StatementGSP29 min
Jun 22, 6:36 AM EDTDense Fog AdvisoryGSP2 hr
Jun 22, 3:19 PM EDTMesoscale DiscussionSPC86 min
Jun 24, 4:43 PM EDTSpecial Weather StatementGSP32 min
Jun 25, 12:29 PM EDTMesoscale DiscussionSPC61 min
Jun 25, 1:02 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 25, 5:57 PM EDTSevere Thunderstorm WarningGSP48 min
Jun 25, 6:23 PM EDTMesoscale DiscussionSPC2 hr
Jun 25, 6:43 PM EDTSevere Thunderstorm WarningGSP47 min
Jun 27, 2:29 PM EDTMesoscale DiscussionSPC3 hr
Jul 6, 3:26 PM EDTSpecial Weather StatementGSP64 min
Jul 15, 10:52 PM EDTSpecial Weather StatementGSP38 min
Jul 15, 11:34 PM EDTSpecial Weather StatementGSP26 min
Jul 15, 11:58 PM EDTSpecial Weather StatementGSP32 min
Jul 17, 4:58 PM EDTSpecial Weather StatementGSP32 min
Jul 22, 7:11 PM EDTSevere Thunderstorm WarningGSP49 min
Jul 22, 7:37 PM EDTAreal Flood AdvisoryGSP113 min
Jul 22, 7:55 PM EDTSevere Thunderstorm WarningGSP20 min
Jul 23, 1:24 PM EDTMesoscale DiscussionSPC3 hr
Jul 23, 2:02 PM EDTSpecial Weather StatementGSP43 min
Jul 23, 2:44 PM EDTSpecial Weather StatementGSP31 min
Jul 23, 3:03 PM EDTFlash Flood WatchGSP33 hr
Jul 23, 3:49 PM EDTSevere Thunderstorm WarningGSP19 min
Jul 23, 5:21 PM EDTSpecial Weather StatementGSP24 min
Jul 24, 9:14 AM EDTSpecial Weather StatementGSP61 min
Jul 24, 10:17 AM EDTSpecial Weather StatementGSP58 min
Jul 25, 11:57 AM EDTSpecial Weather StatementGSP48 min
Jul 25, 12:45 PM EDTSpecial Weather StatementGSP45 min
Jul 26, 1:41 AM EDTDense Fog AdvisoryGSP7 hr
Jul 31, 3:58 AM EDTFlash Flood WatchGSP4 days
Aug 1, 5:58 PM EDTSpecial Weather StatementGSP32 min
Aug 1, 6:43 PM EDTSpecial Weather StatementGSP32 min
Aug 1, 7:23 PM EDTAreal Flood AdvisoryGSP4 hr
Aug 1, 9:01 PM EDTSpecial Weather StatementGSP29 min
Aug 2, 5:12 PM EDTAreal Flood AdvisoryGSP5 hr
Aug 2, 6:36 PM EDTSpecial Weather StatementGSP39 min
Aug 2, 7:13 PM EDTSpecial Weather StatementGSP47 min
Aug 2, 10:02 PM EDTAreal Flood AdvisoryGSP8 hr
Aug 3, 5:27 PM EDTAreal Flood AdvisoryGSP4 hr
Aug 7, 11:49 PM EDTSpecial Weather StatementGSP26 min
Aug 8, 5:48 PM EDTSevere Thunderstorm WarningGSP57 min
Aug 8, 5:52 PM EDTMesoscale DiscussionSPC53 min
Aug 8, 6:12 PM EDTSpecial Weather StatementGSP18 min
Aug 8, 6:30 PM EDTSevere Thunderstorm WarningGSP45 min
Aug 12, 5:48 PM EDTSpecial Weather StatementGSP27 min
Aug 12, 6:41 PM EDTSevere Thunderstorm WarningGSP34 min
Aug 18, 2:45 PM EDTMesoscale DiscussionSPC3 hr
Aug 19, 8:08 PM EDTSpecial Weather StatementGSP37 min
Aug 20, 4:14 AM EDTAreal Flood AdvisoryGSP2 hr
Aug 20, 6:12 AM EDTAreal Flood AdvisoryGSP2 hr
Aug 21, 3:53 PM EDTMesoscale DiscussionSPC2 hr
Aug 21, 4:30 PM EDTSevere Thunderstorm WarningGSP45 min
Aug 30, 9:46 PM EDTSpecial Weather StatementGSP29 min
Aug 30, 9:48 PM EDTSevere Thunderstorm WarningGSP42 min
Aug 30, 10:30 PM EDTSevere Thunderstorm WarningGSP45 min
Aug 31, 5:11 PM EDTSpecial Weather StatementGSP34 min
Aug 31, 5:49 PM EDTSpecial Weather StatementGSP26 min
Sep 1, 8:08 PM EDTSevere Thunderstorm WarningGSP42 min
Sep 4, 6:23 PM EDTSpecial Weather StatementGSP37 min
Sep 9, 5:25 PM EDTSpecial Weather StatementGSP50 min
Sep 13, 3:09 PM EDTFlash Flood WatchGSP4 days
Sep 14, 1:56 PM EDTRiver Flood WarningGSP62 hr
Sep 14, 5:36 PM EDTWind AdvisoryGSP48 hr
Sep 14, 8:20 PM EDTSpecial Weather StatementGSP40 min
Sep 14, 9:02 PM EDTSpecial Weather StatementGSP43 min
Sep 14, 9:47 PM EDTSpecial Weather StatementGSP43 min
Sep 15, 3:33 PM EDTFlash Flood WarningGSP7 hr
Sep 15, 5:25 PM EDTSpecial Weather StatementGSP95 min
Sep 15, 7:00 PM EDTSpecial Weather StatementGSP30 min
Sep 15, 7:48 PM EDTSpecial Weather StatementGSP72 min
Sep 15, 9:01 PM EDTSpecial Weather StatementGSP59 min
Sep 15, 10:04 PM EDTSpecial Weather StatementGSP71 min
Sep 15, 11:19 PM EDTSpecial Weather StatementGSP56 min
Sep 16, 12:17 AM EDTSpecial Weather StatementGSP88 min
Sep 16, 1:54 AM EDTSpecial Weather StatementGSP81 min
Sep 16, 3:49 AM EDTSpecial Weather StatementGSP116 min
Sep 16, 6:56 AM EDTSpecial Weather StatementGSP94 min
Sep 16, 2:39 PM EDTSpecial Weather StatementGSP21 min
Sep 16, 3:04 PM EDTFlash Flood WarningGSP5 hr
Sep 16, 5:20 PM EDTSpecial Weather StatementGSP55 min
Sep 16, 6:40 PM EDTFlash Flood WarningGSP6 hr
Sep 16, 8:37 PM EDTFlash Flood WarningGSP6 hr
Sep 16, 8:54 PM EDTFlash Flood WarningGSP2 hr
Sep 17, 2:26 AM EDTAreal Flood WarningGSP3 hr
Sep 27, 6:06 PM EDTSevere Thunderstorm WatchSPC4 hr
Sep 27, 8:45 PM EDTSevere Thunderstorm WarningGSP45 min
Sep 27, 9:27 PM EDTSevere Thunderstorm WarningGSP48 min
Oct 7, 5:30 AM EDTDense Fog AdvisoryGSP5 hr
Oct 9, 3:37 PM EDTFlash Flood WatchGSP52 hr
Oct 10, 5:19 AM EDTTropical Storm WarningGSP36 hr
Oct 11, 4:34 AM EDTMesoscale DiscussionSPC56 min
Oct 11, 10:31 AM EDTFlash Flood WarningGSP4 hr
Oct 11, 10:54 AM EDTSpecial Weather StatementGSP21 min
Oct 11, 11:24 AM EDTSpecial Weather StatementGSP51 min
Oct 11, 2:27 PM EDTAreal Flood WarningGSP6 hr
Oct 11, 8:38 PM EDTAreal Flood AdvisoryGSP6 hr
Oct 20, 2:48 PM EDTFreeze WatchGSP13 hr
Oct 21, 4:14 AM EDTFreeze WarningGSP30 hr
Nov 2, 3:26 PM EDTSpecial Weather StatementGSP49 min
Nov 2, 3:47 PM EDTMesoscale DiscussionSPC118 min
Nov 3, 2:42 PM EDTFrost AdvisoryGSP19 hr
Nov 5, 8:48 PM ESTDense Fog AdvisoryGSP10 hr
Nov 6, 10:42 AM ESTSpecial Weather StatementGSP63 min
Nov 9, 3:38 AM ESTFreeze WatchGSP24 hr
Nov 10, 3:34 AM ESTFreeze WarningGSP29 hr
Nov 12, 7:56 PM ESTSpecial Weather StatementGSP2 hr
Nov 13, 3:11 PM ESTFlood WatchGSP52 hr
Nov 24, 10:08 PM ESTDense Fog AdvisoryGSP12 hr
Nov 25, 10:04 AM ESTDense Fog AdvisoryGSP56 min
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 9, 3:08 AM ESTMesoscale DiscussionSPC5 hr
Dec 9, 8:18 AM 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 20, 8:34 PM ESTAreal Flood AdvisoryGSP20 hr
Dec 21, 1:30 AM ESTDense Fog AdvisoryGSP5 hr
Dec 21, 4:27 PM ESTAreal Flood AdvisoryGSP7 hr
Dec 26, 3:01 PM ESTFlood WatchGSP52 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.