Alert archive / North Carolina / Forsyth County

Weather alerts in Forsyth County, North Carolina, 2023

125 weather alerts in 2023, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Forsyth County and its neighbors

Each county as a circle sized by its count in 2023. Tap one for its archive.

Alerts
125
Warnings
36
Watches
13
Advisories
20
Busiest month
July25 alerts
Busiest day
July 9, 20237 alerts

Over time

By month

Warning verification

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

Forsyth County, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings00
Severe thunderstorm warnings26254%2588%18 min
Flash flood warnings10100%0

Each office's whole area, 2023

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Raleigh, NC: tornado warnings14286%3100%11 min
NWS Raleigh, NC: severe thunderstorm warnings22117919%51386%23 min
NWS Raleigh, NC: flash flood warnings492549%9078%44 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 1, 12:29 AM ESTDense Fog AdvisoryRAH10 hr
Jan 1, 10:18 PM ESTDense Fog AdvisoryRAH12 hr
Jan 5, 6:19 AM ESTDense Fog AdvisoryRAH4 hr
Jan 9, 5:03 AM ESTDense Fog AdvisoryRAH3 hr
Jan 12, 5:47 PM ESTSpecial Weather StatementRAH58 min
Jan 12, 5:54 PM ESTMesoscale DiscussionSPC96 min
Jan 12, 6:49 PM ESTSevere Thunderstorm WarningRAH41 min
Jan 31, 2:29 AM ESTDense Fog AdvisoryRAH8 hr
Mar 3, 7:28 PM ESTSpecial Weather StatementRAH47 min
Mar 3, 7:54 PM ESTSevere Thunderstorm WarningRAH51 min
Mar 12, 3:12 PM EDTFreeze WatchRAH12 hr
Mar 13, 3:21 AM EDTFreeze WatchRAH25 hr
Mar 13, 3:21 AM EDTFreeze WarningRAH30 hr
Mar 14, 3:55 AM EDTFreeze WarningRAH30 hr
Mar 14, 2:59 PM EDTFreeze WatchRAH12 hr
Mar 15, 3:22 AM EDTFreeze WarningRAH30 hr
Mar 17, 2:44 PM EDTFreeze WatchRAH13 hr
Mar 18, 3:30 AM EDTFreeze WatchRAH11 hr
Mar 18, 3:30 AM EDTFreeze WarningRAH30 hr
Mar 18, 2:48 PM EDTFreeze WarningRAH43 hr
Mar 19, 3:30 AM EDTFreeze WatchRAH30 hr
Mar 20, 9:27 AM EDTFreeze WarningRAH24 hr
Mar 25, 6:53 AM EDTSpecial Weather StatementRAH67 min
Mar 27, 2:30 PM EDTMesoscale DiscussionSPC2 hr
Mar 31, 12:00 PM EDTWind AdvisoryRAH36 hr
Apr 6, 5:38 PM EDTSevere Thunderstorm WarningRAH52 min
Apr 6, 6:25 PM EDTSpecial Weather StatementRAH65 min
Apr 9, 2:37 PM EDTFrost AdvisoryRAH18 hr
Apr 10, 9:35 AM EDTFrost AdvisoryRAH23 hr
Apr 14, 12:24 PM EDTSpecial Weather StatementRAH36 min
Apr 14, 5:17 PM EDTSpecial Weather StatementRAH58 min
Apr 22, 7:55 AM EDTSpecial Weather StatementRAH65 min
Apr 22, 8:07 AM EDTMesoscale DiscussionSPC113 min
Apr 22, 8:49 AM EDTSevere Thunderstorm WarningRAH41 min
Apr 28, 3:59 PM EDTMesoscale DiscussionSPC91 min
Apr 28, 5:11 PM EDTSevere Thunderstorm WarningRAH64 min
May 13, 9:45 PM EDTSpecial Weather StatementRAH45 min
May 16, 2:34 PM EDTMesoscale DiscussionSPC116 min
May 16, 4:03 PM EDTSevere Thunderstorm WatchSPC8 hr
May 16, 7:05 PM EDTMesoscale DiscussionSPC115 min
May 16, 8:23 PM EDTSevere Thunderstorm WarningRAH37 min
May 16, 8:35 PM EDTMesoscale DiscussionSPC85 min
May 28, 9:57 PM EDTSpecial Weather StatementRAH63 min
May 28, 11:09 PM EDTAreal Flood AdvisoryRAH3 hr
Jun 3, 6:36 PM EDTSpecial Weather StatementRAH39 min
Jun 3, 6:57 PM EDTSevere Thunderstorm WarningRAH48 min
Jun 3, 7:10 PM EDTSevere Thunderstorm WarningRAH35 min
Jun 3, 7:46 PM EDTSpecial Weather StatementRAH59 min
Jun 3, 9:00 PM EDTAreal Flood AdvisoryRAH3 hr
Jun 19, 12:17 PM EDTSpecial Weather StatementRAH58 min
Jun 19, 12:42 PM EDTAreal Flood AdvisoryRAH68 min
Jun 19, 12:48 PM EDTSevere Thunderstorm WarningRAH27 min
Jun 22, 2:53 AM EDTFlood WatchRAH27 hr
Jun 26, 12:36 PM EDTMesoscale DiscussionSPC2 hr
Jun 26, 4:51 PM EDTSevere Thunderstorm WatchSPC6 hr
Jun 26, 7:08 PM EDTMesoscale DiscussionSPC2 hr
Jun 26, 7:20 PM EDTSevere Thunderstorm WarningRAH55 min
Jun 26, 8:07 PM EDTSevere Thunderstorm WarningRAH53 min
Jun 26, 8:24 PM EDTSpecial Weather StatementRAH51 min
Jun 26, 8:31 PM EDTAreal Flood AdvisoryRAH119 min
Jul 1, 2:55 PM EDTSpecial Weather StatementRAH65 min
Jul 2, 2:06 PM EDTMesoscale DiscussionSPC114 min
Jul 2, 5:54 PM EDTMesoscale DiscussionSPC96 min
Jul 2, 11:37 PM EDTSpecial Weather StatementRAH53 min
Jul 5, 8:02 PM EDTAreal Flood AdvisoryRAH114 min
Jul 9, 9:58 AM EDTSpecial Weather StatementRAH32 min
Jul 9, 10:11 AM EDTSevere Thunderstorm WarningRAH49 min
Jul 9, 10:21 AM EDTSpecial Weather StatementRAH24 min
Jul 9, 10:48 AM EDTSpecial Weather StatementRAH42 min
Jul 9, 11:01 AM EDTSevere Thunderstorm WarningRAH44 min
Jul 9, 11:11 AM EDTSevere Thunderstorm WarningRAH49 min
Jul 9, 11:23 AM EDTMesoscale DiscussionSPC97 min
Jul 14, 3:16 AM EDTFlood WatchRAH21 hr
Jul 14, 1:38 PM EDTMesoscale DiscussionSPC3 hr
Jul 14, 8:41 PM EDTSpecial Weather StatementRAH64 min
Jul 14, 9:20 PM EDTAreal Flood AdvisoryRAH2 hr
Jul 14, 9:27 PM EDTSpecial Weather StatementRAH33 min
Jul 23, 10:16 PM EDTAreal Flood AdvisoryRAH4 hr
Jul 25, 4:00 PM EDTSpecial Weather StatementRAH45 min
Jul 25, 4:10 PM EDTSpecial Weather StatementRNK35 min
Jul 25, 4:42 PM EDTSpecial Weather StatementRAH48 min
Jul 29, 2:47 PM EDTMesoscale DiscussionSPC118 min
Jul 29, 5:56 PM EDTMesoscale DiscussionSPC94 min
Jul 29, 6:30 PM EDTSevere Thunderstorm WarningRAH45 min
Jul 29, 7:12 PM EDTSevere Thunderstorm WarningRAH48 min
Aug 6, 4:05 PM EDTSpecial Weather StatementRAH55 min
Aug 6, 4:19 PM EDTSevere Thunderstorm WarningRAH41 min
Aug 6, 5:00 PM EDTSevere Thunderstorm WarningRAH60 min
Aug 7, 1:19 PM EDTMesoscale DiscussionSPC116 min
Aug 7, 1:51 PM EDTTornado WatchSPC6 hr
Aug 7, 4:08 PM EDTMesoscale DiscussionSPC97 min
Aug 7, 5:12 PM EDTSpecial Weather StatementRAH33 min
Aug 7, 5:27 PM EDTSevere Thunderstorm WarningRAH63 min
Aug 7, 5:47 PM EDTMesoscale DiscussionSPC118 min
Aug 14, 10:24 PM EDTMesoscale DiscussionSPC3 hr
Aug 15, 1:28 PM EDTMesoscale DiscussionSPC3 hr
Aug 15, 1:48 PM EDTSevere Thunderstorm WatchSPC7 hr
Aug 15, 2:14 PM EDTSpecial Weather StatementRAH61 min
Aug 15, 2:30 PM EDTSevere Thunderstorm WarningRAH45 min
Aug 15, 2:56 PM EDTSevere Thunderstorm WarningRAH49 min
Aug 24, 5:58 PM EDTSpecial Weather StatementRAH62 min
Aug 24, 6:35 PM EDTSevere Thunderstorm WarningRAH40 min
Aug 24, 6:45 PM EDTSpecial Weather StatementRAH45 min
Aug 24, 7:13 PM EDTSevere Thunderstorm WarningRAH62 min
Aug 26, 3:25 PM EDTMesoscale DiscussionSPC2 hr
Aug 26, 7:52 PM EDTSpecial Weather StatementRAH53 min
Aug 26, 8:39 PM EDTSevere Thunderstorm WarningRAH36 min
Sep 7, 2:25 PM EDTMesoscale DiscussionSPC3 hr
Sep 7, 9:30 PM EDTSpecial Weather StatementRAH45 min
Sep 7, 9:39 PM EDTSpecial Weather StatementRAH66 min
Sep 9, 11:18 AM EDTSpecial Weather StatementRAH27 min
Sep 9, 11:28 AM EDTSevere Thunderstorm WarningRAH32 min
Sep 10, 7:35 PM EDTFlash Flood Warning Considerable damage threatRAH3 hr
Sep 11, 4:53 AM EDTDense Fog AdvisoryRAH4 hr
Sep 12, 3:45 PM EDTMesoscale DiscussionSPC2 hr
Sep 12, 5:53 PM EDTAreal Flood AdvisoryRAH3 hr
Sep 12, 6:14 PM EDTSevere Thunderstorm WarningRAH46 min
Sep 12, 9:26 PM EDTAreal Flood WarningRAH3 hr
Oct 20, 4:35 PM EDTSpecial Weather StatementRAH55 min
Oct 23, 2:22 PM EDTFrost AdvisoryRAH19 hr
Oct 30, 2:45 PM EDTFreeze WatchRAH13 hr
Oct 31, 4:11 AM EDTFreeze WarningRAH30 hr
Nov 1, 3:53 AM EDTFreeze WarningRAH29 hr
Dec 2, 6:51 PM ESTDense Fog AdvisoryRAH5 hr
Dec 17, 2:44 PM ESTAreal Flood AdvisoryRAH5 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 archive20222024

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.