Alert archive / North Carolina / Rowan County

Weather alerts in Rowan County, North Carolina, 2017

158 weather alerts in 2017, 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 2017. Tap one for its archive.

Alerts
158
Warnings
42
Watches
21
Advisories
33
Busiest month
March28 alerts
Busiest day
September 1, 201713 alerts

Over time

By month

Warning verification

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

0 of 3 tornado warnings covering Rowan County in 2017 had a tornado report inside them.

Rowan County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings30100%0
Severe thunderstorm warnings231917%1656%24 min
Flash flood warnings220%2100%78 min

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Greenville-Spartanburg, SC: tornado warnings351266%4693%19 min
NWS Greenville-Spartanburg, SC: severe thunderstorm warnings28622721%73676%20 min
NWS Greenville-Spartanburg, SC: flash flood warnings231439%5064%48 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 5, 3:58 AM ESTWinter Storm WatchGSP11 hr
Jan 5, 3:15 PM ESTWinter Storm WarningGSP46 hr
Jan 7, 3:18 AM ESTMesoscale DiscussionSPC5 hr
Jan 7, 3:42 AM ESTWind Chill AdvisoryGSP32 hr
Jan 7, 3:04 PM ESTWinter Weather AdvisoryGSP21 hr
Jan 8, 2:55 PM ESTWinter Weather AdvisoryGSP21 hr
Jan 9, 2:48 PM ESTWinter Weather AdvisoryGSP21 hr
Jan 21, 3:31 AM ESTDense Fog AdvisoryGSP8 hr
Feb 23, 2:55 AM ESTDense Fog AdvisoryGSP7 hr
Mar 1, 2:07 PM ESTMesoscale DiscussionSPC113 min
Mar 1, 3:02 PM ESTSevere Thunderstorm WatchSPC7 hr
Mar 1, 5:40 PM ESTSevere Thunderstorm WarningGSP35 min
Mar 1, 6:19 PM ESTSevere Thunderstorm WarningGSP56 min
Mar 1, 6:21 PM ESTMesoscale DiscussionSPC114 min
Mar 2, 3:13 PM ESTFreeze WatchGSP13 hr
Mar 3, 4:22 AM ESTFreeze WarningGSP29 hr
Mar 3, 2:57 PM ESTFreeze WatchGSP18 hr
Mar 4, 9:10 AM ESTFreeze WarningGSP24 hr
Mar 9, 3:47 PM ESTFreeze WatchGSP12 hr
Mar 10, 3:53 AM ESTFreeze WarningGSP29 hr
Mar 10, 3:33 PM ESTWinter Weather AdvisoryGSP42 hr
Mar 11, 3:20 PM ESTFreeze WatchGSP12 hr
Mar 12, 4:06 AM EDTFreeze WarningGSP30 hr
Mar 12, 3:47 PM EDTFreeze WatchGSP12 hr
Mar 13, 3:53 AM EDTFreeze WatchGSP24 hr
Mar 14, 3:25 AM EDTFreeze WatchGSP25 hr
Mar 14, 3:25 AM EDTFreeze WarningGSP32 hr
Mar 15, 3:55 AM EDTFreeze WarningGSP31 hr
Mar 15, 9:59 PM EDTFreeze WatchGSP6 hr
Mar 16, 3:31 AM EDTFreeze WarningGSP30 hr
Mar 18, 3:26 PM EDTMesoscale DiscussionSPC3 hr
Mar 19, 4:10 AM EDTFreeze WarningGSP29 hr
Mar 21, 8:39 PM EDTSevere Thunderstorm WarningGSP51 min
Mar 21, 9:13 PM EDTSevere Thunderstorm WarningGSP50 min
Mar 22, 3:50 AM EDTFreeze WarningGSP29 hr
Mar 28, 12:36 AM EDTSpecial Weather StatementGSP24 min
Mar 31, 7:55 AM EDTSpecial Weather StatementGSP65 min
Apr 3, 2:07 PM EDTTornado WatchSPC6 hr
Apr 5, 3:31 PM EDTWind AdvisoryGSP52 hr
Apr 5, 11:50 PM EDTSevere Thunderstorm WatchSPC6 hr
Apr 6, 3:25 PM EDTFreeze WatchGSP23 hr
Apr 7, 2:54 PM EDTFrost AdvisoryGSP18 hr
Apr 8, 2:37 PM EDTFrost AdvisoryGSP18 hr
Apr 20, 3:39 AM EDTDense Fog AdvisoryGSP6 hr
Apr 20, 5:26 PM EDTSpecial Weather StatementGSP34 min
Apr 21, 4:19 PM EDTMesoscale DiscussionSPC56 min
Apr 22, 2:57 PM EDTFlood WatchGSP61 hr
Apr 23, 10:34 PM EDTSpecial Weather StatementGSP41 min
Apr 24, 6:33 AM EDTAreal Flood WarningGSP12 hr
Apr 24, 9:16 AM EDTAreal Flood AdvisoryGSP12 hr
May 1, 4:02 PM EDTMesoscale DiscussionSPC118 min
May 1, 5:18 PM EDTSpecial Weather StatementGSP42 min
May 5, 1:05 AM EDTSpecial Weather StatementGSP40 min
May 11, 4:47 PM EDTMesoscale DiscussionSPC2 hr
May 19, 2:24 PM EDTMesoscale DiscussionSPC2 hr
May 22, 1:54 PM EDTFlash Flood WatchGSP36 hr
May 24, 4:23 AM EDTFlash Flood WatchGSP18 hr
May 24, 10:04 AM EDTTornado WatchSPC11 hr
May 24, 3:02 PM EDTMesoscale DiscussionSPC88 min
May 24, 3:41 PM EDTTornado WarningGSP34 min
May 24, 5:25 PM EDTMesoscale DiscussionSPC65 min
May 25, 9:49 AM EDTSpecial Weather StatementGSP41 min
May 27, 6:55 PM EDTSevere Thunderstorm WatchSPC9 hr
May 27, 10:46 PM EDTMesoscale DiscussionSPC89 min
May 28, 2:05 AM EDTSevere Thunderstorm WarningGSP70 min
May 28, 2:17 AM EDTMesoscale DiscussionSPC58 min
May 29, 6:39 PM EDTSpecial Weather StatementGSP36 min
May 29, 7:14 PM EDTSpecial Weather StatementGSP31 min
May 29, 7:36 PM EDTSpecial Weather StatementGSP24 min
Jun 4, 3:15 PM EDTMesoscale DiscussionSPC90 min
Jun 4, 4:30 PM EDTSevere Thunderstorm WarningGSP45 min
Jun 4, 5:15 PM EDTSpecial Weather StatementGSP45 min
Jun 4, 5:46 PM EDTAreal Flood AdvisoryGSP119 min
Jun 5, 1:49 AM EDTSpecial Weather StatementGSP26 min
Jun 5, 2:38 AM EDTSpecial Weather StatementGSP112 min
Jun 5, 4:26 AM EDTSpecial Weather StatementGSP49 min
Jun 13, 4:25 PM EDTSevere Thunderstorm WarningGSP50 min
Jun 13, 4:56 PM EDTSevere Thunderstorm WarningGSP49 min
Jun 13, 5:16 PM EDTSevere Thunderstorm WarningGSP44 min
Jun 13, 5:29 PM EDTSevere Thunderstorm WarningGSP46 min
Jun 14, 1:17 PM EDTMesoscale DiscussionSPC2 hr
Jun 16, 1:27 PM EDTMesoscale DiscussionSPC3 hr
Jun 16, 8:19 PM EDTSpecial Weather StatementGSP26 min
Jun 18, 10:21 PM EDTSpecial Weather StatementGSP24 min
Jun 18, 10:47 PM EDTSpecial Weather StatementGSP28 min
Jun 18, 11:15 PM EDTSpecial Weather StatementGSP30 min
Jun 18, 11:44 PM EDTSpecial Weather StatementGSP31 min
Jun 19, 1:36 AM EDTAreal Flood AdvisoryGSP114 min
Jun 19, 1:03 PM EDTMesoscale DiscussionSPC2 hr
Jun 19, 6:43 PM EDTMesoscale DiscussionSPC2 hr
Jun 19, 11:42 PM EDTSpecial Weather StatementGSP33 min
Jun 20, 12:09 AM EDTSpecial Weather StatementGSP36 min
Jun 20, 12:47 AM EDTAreal Flood AdvisoryGSP3 hr
Jun 24, 4:16 PM EDTSpecial Weather StatementGSP14 min
Jul 3, 9:03 PM EDTAreal Flood AdvisoryGSP117 min
Jul 3, 10:07 PM EDTFlash Flood WarningGSP113 min
Jul 6, 5:22 PM EDTMesoscale DiscussionSPC113 min
Jul 6, 5:28 PM EDTSevere Thunderstorm WarningGSP45 min
Jul 8, 4:50 PM EDTMesoscale DiscussionSPC115 min
Jul 8, 5:23 PM EDTSevere Thunderstorm WarningGSP52 min
Jul 8, 5:26 PM EDTSpecial Weather StatementGSP34 min
Jul 8, 5:45 PM EDTSevere Thunderstorm WarningGSP26 min
Jul 9, 3:26 AM EDTDense Fog AdvisoryGSP7 hr
Jul 11, 10:50 PM EDTSpecial Weather StatementGSP25 min
Jul 11, 11:01 PM EDTAreal Flood AdvisoryGSP119 min
Jul 15, 1:38 PM EDTMesoscale DiscussionSPC67 min
Jul 15, 2:31 PM EDTSpecial Weather StatementGSP29 min
Jul 15, 2:35 PM EDTSevere Thunderstorm WarningGSP25 min
Jul 15, 5:05 PM EDTSevere Thunderstorm WarningGSP40 min
Jul 15, 5:48 PM EDTSpecial Weather StatementGSP42 min
Jul 23, 11:36 AM EDTMesoscale DiscussionSPC2 hr
Jul 28, 4:56 PM EDTSpecial Weather StatementGSP34 min
Jul 28, 5:12 PM EDTSevere Thunderstorm WarningGSP48 min
Aug 4, 9:17 PM EDTSpecial Weather StatementGSP43 min
Aug 4, 10:19 PM EDTSpecial Weather StatementGSP41 min
Aug 14, 10:30 PM EDTSpecial Weather StatementGSP30 min
Aug 14, 11:02 PM EDTSpecial Weather StatementGSP28 min
Aug 15, 7:52 AM EDTDense Fog AdvisoryGSP92 min
Sep 1, 1:07 PM EDTMesoscale DiscussionSPC113 min
Sep 1, 1:49 PM EDTTornado WatchSPC8 hr
Sep 1, 1:55 PM EDTSpecial Weather StatementGSP35 min
Sep 1, 2:45 PM EDTSevere Thunderstorm WarningGSP45 min
Sep 1, 4:44 PM EDTMesoscale DiscussionSPC91 min
Sep 1, 5:16 PM EDTSevere Thunderstorm WarningGSP44 min
Sep 1, 6:49 PM EDTSevere Thunderstorm WarningGSP41 min
Sep 1, 6:58 PM EDTTornado WarningGSP32 min
Sep 1, 7:12 PM EDTTornado WarningGSP22 min
Sep 1, 7:15 PM EDTAreal Flood AdvisoryGSP3 hr
Sep 1, 7:23 PM EDTMesoscale DiscussionSPC97 min
Sep 1, 7:49 PM EDTSpecial Weather StatementGSP26 min
Sep 1, 7:51 PM EDTFlash Flood WarningGSP2 hr
Sep 1, 8:54 PM EDTSpecial Weather StatementGSP36 min
Sep 1, 9:00 PM EDTSevere Thunderstorm WarningGSP30 min
Sep 5, 3:36 PM EDTMesoscale DiscussionSPC54 min
Sep 10, 3:34 PM EDTWind AdvisoryGSP36 hr
Oct 15, 5:08 AM EDTDense Fog AdvisoryGSP5 hr
Oct 17, 3:35 AM EDTFrost AdvisoryGSP29 hr
Oct 23, 1:07 PM EDTMesoscale DiscussionSPC113 min
Oct 23, 2:00 PM EDTTornado WatchSPC8 hr
Oct 23, 4:33 PM EDTMesoscale DiscussionSPC57 min
Oct 23, 5:14 PM EDTSevere Thunderstorm WarningGSP46 min
Oct 23, 5:26 PM EDTSevere Thunderstorm WarningGSP49 min
Oct 23, 5:44 PM EDTAreal Flood AdvisoryGSP6 hr
Oct 23, 5:48 PM EDTSevere Thunderstorm WarningGSP42 min
Oct 23, 6:59 PM EDTMesoscale DiscussionSPC91 min
Oct 25, 3:13 AM EDTFrost AdvisoryGSP30 hr
Oct 26, 2:54 PM EDTFrost AdvisoryGSP18 hr
Oct 29, 4:29 AM EDTFreeze WarningGSP30 hr
Oct 30, 2:55 PM EDTFrost AdvisoryGSP18 hr
Nov 6, 3:41 AM ESTDense Fog AdvisoryGSP5 hr
Nov 9, 2:55 PM ESTFreeze WatchGSP12 hr
Nov 10, 2:57 AM ESTFreeze WarningGSP31 hr
Nov 13, 5:15 AM ESTDense Fog AdvisoryGSP6 hr
Nov 22, 3:50 AM ESTDense Fog AdvisoryGSP5 hr
Dec 7, 4:42 PM ESTWinter Weather AdvisoryGSP43 hr
Dec 7, 9:47 PM ESTWinter Storm WarningGSP38 hr
Dec 9, 2:45 PM ESTWinter Weather AdvisoryGSP19 hr
Dec 19, 5:02 AM ESTDense Fog 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 archive20162018

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.