Alert archive / Tennessee / Roane County

Weather alerts in Roane County, Tennessee, 2010

115 weather alerts in 2010, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Roane County and its neighbors

Each county as a circle sized by its count in 2010. Tap one for its archive.

Alerts
115
Warnings
28
Watches
12
Advisories
55
Busiest month
May23 alerts
Busiest day
June 15, 20107 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 2 tornado warnings covering Roane County in 2010 had a tornado report inside them.

Roane County, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings20100%0
Severe thunderstorm warnings171324%1070%15 min
Flash flood warnings20100%10%

Each office's whole area, 2010

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Morristown, TN: tornado warnings30680%989%20 min
NWS Morristown, TN: severe thunderstorm warnings21215825%28979%22 min
NWS Morristown, TN: flash flood warnings231248%2378%67 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 6, 3:06 PM ESTWinter Weather AdvisoryMRX60 hr
Jan 20, 5:34 PM ESTAreal Flood AdvisoryMRX4 hr
Jan 21, 11:18 PM ESTAreal Flood AdvisoryMRX4 hr
Jan 23, 3:42 PM ESTWind AdvisoryMRX24 hr
Jan 24, 1:10 PM ESTFlood WatchMRX8 hr
Jan 24, 1:19 PM ESTAreal Flood AdvisoryMRX5 hr
Jan 24, 5:15 PM ESTAreal Flood WarningMRX3 hr
Jan 24, 8:04 PM ESTAreal Flood WarningMRX6 hr
Jan 25, 2:00 AM ESTAreal Flood WarningMRX3 hr
Jan 25, 5:07 AM ESTWind AdvisoryMRX17 hr
Jan 27, 2:59 PM ESTWinter Storm WatchMRX24 hr
Jan 28, 2:56 PM ESTWinter Storm WarningMRX48 hr
Jan 29, 9:06 PM ESTMesoscale DiscussionSPC4 hr
Jan 30, 9:28 AM ESTWinter Weather AdvisoryMRX17 hr
Feb 9, 4:25 AM ESTWind AdvisoryMRX47 hr
Feb 14, 3:44 AM ESTWinter Weather AdvisoryMRX4 days
Feb 14, 10:42 PM ESTMesoscale DiscussionSPC5 hr
Mar 1, 3:20 PM ESTWinter Weather AdvisoryMRX28 hr
Mar 12, 4:05 AM ESTWind AdvisoryMRX6 hr
Mar 12, 11:32 AM ESTMesoscale DiscussionSPC58 min
Mar 12, 12:04 PM ESTSevere Thunderstorm WatchSPC6 hr
Mar 12, 12:15 PM ESTAreal Flood AdvisoryMRX4 hr
Mar 12, 2:32 PM ESTAreal Flood WarningMRX4 hr
Mar 27, 2:40 AM EDTWind AdvisoryMRX36 hr
Apr 9, 3:02 PM EDTFrost AdvisoryMRX18 hr
Apr 24, 6:48 PM EDTMesoscale DiscussionSPC57 min
Apr 24, 7:15 PM EDTTornado WatchSPC8 hr
Apr 25, 12:05 AM EDTMesoscale DiscussionSPC55 min
May 1, 6:35 PM EDTTornado WatchSPC4 hr
May 1, 7:54 PM EDTAreal Flood AdvisoryMRX3 hr
May 1, 8:07 PM EDTMesoscale DiscussionSPC53 min
May 2, 3:31 AM EDTFlash Flood WatchMRX27 hr
May 2, 9:19 AM EDTRiver Flood WarningMRX28 hr
May 3, 12:37 AM EDTAreal Flood AdvisoryMRX6 hr
May 3, 1:11 AM EDTAreal Flood WarningMRX6 hr
May 14, 12:34 PM EDTSevere Thunderstorm WatchSPC7 hr
May 14, 4:25 PM EDTAreal Flood AdvisoryMRX4 hr
May 14, 4:41 PM EDTSevere Thunderstorm WarningMRX45 min
May 14, 5:46 PM EDTSevere Thunderstorm WarningMRX44 min
May 14, 6:30 PM EDTSevere Thunderstorm WarningMRX45 min
May 14, 6:41 PM EDTAreal Flood AdvisoryMRX3 hr
May 14, 8:37 PM EDTMesoscale DiscussionSPC53 min
May 15, 2:09 PM EDTMesoscale DiscussionSPC2 hr
May 17, 12:48 PM EDTMesoscale DiscussionSPC57 min
May 17, 3:00 PM EDTSevere Thunderstorm WatchSPC6 hr
May 28, 1:23 PM EDTMesoscale DiscussionSPC67 min
May 28, 1:52 PM EDTSevere Thunderstorm WatchSPC7 hr
May 28, 2:56 PM EDTSevere Thunderstorm WarningMRX64 min
May 28, 3:43 PM EDTSevere Thunderstorm WarningMRX62 min
May 28, 4:18 PM EDTAreal Flood AdvisoryMRX3 hr
May 28, 4:22 PM EDTMesoscale DiscussionSPC53 min
Jun 2, 5:17 AM EDTDense Fog AdvisoryMRX4 hr
Jun 11, 1:38 PM EDTMesoscale DiscussionSPC2 hr
Jun 11, 2:58 PM EDTAreal Flood AdvisoryMRX2 hr
Jun 11, 3:07 PM EDTAreal Flood AdvisoryMRX2 hr
Jun 14, 4:25 PM EDTMesoscale DiscussionSPC95 min
Jun 14, 4:28 PM EDTSevere Thunderstorm WarningMRX62 min
Jun 14, 5:14 PM EDTAreal Flood AdvisoryMRX2 hr
Jun 15, 12:26 PM EDTSevere Thunderstorm WarningMRX64 min
Jun 15, 1:07 PM EDTSevere Thunderstorm WarningMRX53 min
Jun 15, 1:11 PM EDTMesoscale DiscussionSPC2 hr
Jun 15, 1:13 PM EDTAreal Flood AdvisoryMRX2 hr
Jun 15, 2:03 PM EDTAreal Flood AdvisoryMRX66 min
Jun 15, 2:33 PM EDTSevere Thunderstorm WarningMRX57 min
Jun 15, 6:16 PM EDTSevere Thunderstorm WarningMRX59 min
Jun 19, 11:14 AM EDTSevere Thunderstorm WarningMRX46 min
Jun 19, 11:59 AM EDTSevere Thunderstorm WarningMRX46 min
Jun 24, 5:45 PM EDTAreal Flood AdvisoryMRX3 hr
Jul 9, 1:39 PM EDTMesoscale DiscussionSPC96 min
Jul 19, 7:06 PM EDTFlash Flood WarningMRX3 hr
Jul 21, 4:17 PM EDTAreal Flood AdvisoryMRX118 min
Jul 22, 12:16 PM EDTAreal Flood AdvisoryMRX119 min
Jul 26, 1:25 PM EDTMesoscale DiscussionSPC95 min
Jul 26, 1:56 PM EDTAreal Flood AdvisoryMRX3 hr
Jul 28, 5:32 PM EDTAreal Flood AdvisoryMRX3 hr
Jul 28, 7:56 PM EDTAreal Flood AdvisoryMRX3 hr
Jul 28, 9:21 PM EDTSevere Thunderstorm WarningMRX54 min
Jul 28, 9:53 PM EDTSevere Thunderstorm WarningMRX67 min
Jul 29, 1:40 AM EDTAreal Flood AdvisoryMRX3 hr
Aug 2, 3:19 PM EDTHeat AdvisoryMRX3 days
Aug 5, 1:15 PM EDTMesoscale DiscussionSPC90 min
Aug 5, 1:26 PM EDTSevere Thunderstorm WarningMRX64 min
Aug 5, 1:47 PM EDTSevere Thunderstorm WatchSPC9 hr
Aug 5, 5:52 PM EDTMesoscale DiscussionSPC53 min
Aug 13, 2:34 AM EDTHeat AdvisoryMRX16 hr
Aug 18, 3:08 AM EDTFlash Flood WatchMRX31 hr
Aug 18, 11:57 AM EDTAreal Flood AdvisoryMRX3 hr
Aug 18, 2:33 PM EDTFlash Flood WarningMRX6 hr
Aug 19, 11:09 PM EDTDense Fog AdvisoryMRX10 hr
Aug 21, 1:54 PM EDTMesoscale DiscussionSPC96 min
Sep 11, 10:14 AM EDTAreal Flood AdvisoryMRX3 hr
Sep 11, 5:59 PM EDTSevere Thunderstorm WarningMRX46 min
Sep 11, 6:43 PM EDTAreal Flood AdvisoryMRX3 hr
Oct 5, 10:39 AM EDTFrost AdvisoryMRX22 hr
Oct 6, 2:51 PM EDTFrost AdvisoryMRX18 hr
Oct 15, 3:01 PM EDTFrost AdvisoryMRX17 hr
Oct 16, 2:50 PM EDTFrost AdvisoryMRX19 hr
Oct 21, 2:41 PM EDTFrost AdvisoryMRX17 hr
Oct 25, 6:18 AM EDTAreal Flood AdvisoryMRX3 hr
Oct 26, 2:33 AM EDTWind AdvisoryMRX19 hr
Oct 26, 12:57 PM EDTMesoscale DiscussionSPC93 min
Oct 26, 2:12 PM EDTTornado WarningMRX33 min
Oct 26, 2:16 PM EDTTornado WatchSPC8 hr
Oct 26, 2:24 PM EDTTornado WarningMRX22 min
Oct 26, 6:09 PM EDTSevere Thunderstorm WarningMRX66 min
Oct 27, 11:05 PM EDTDense Fog AdvisoryMRX8 hr
Nov 23, 10:05 PM ESTDense Fog AdvisoryMRX11 hr
Nov 28, 9:30 PM ESTWind AdvisoryMRX37 hr
Nov 30, 5:44 AM ESTAreal Flood AdvisoryMRX4 hr
Nov 30, 9:37 AM ESTAreal Flood AdvisoryMRX4 hr
Dec 1, 7:41 AM ESTAreal Flood AdvisoryMRX6 hr
Dec 11, 3:31 PM ESTWinter Weather AdvisoryMRX51 hr
Dec 15, 3:51 AM ESTWinter Weather AdvisoryMRX32 hr
Dec 24, 3:22 PM ESTWinter Weather AdvisoryMRX25 hr
Dec 25, 4:07 PM ESTWinter Weather AdvisoryMRX31 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 archive20092011

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.