Alert archive / Arkansas / Boone County

Weather alerts in Boone County, Arkansas, 2017

128 weather alerts in 2017, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Boone County and its neighbors

Each county as a circle sized by its count in 2017. Tap one for its archive.

Alerts
128
Warnings
47
Watches
18
Advisories
1
Busiest month
April33 alerts
Busiest day
April 29, 201714 alerts

Over time

By month

Warning verification

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

1 of 9 tornado warnings covering Boone County in 2017 had a tornado report inside them; 0 of 2 tornado reports fell inside a warning.

Boone County, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings9189%20%
Severe thunderstorm warnings311842%1989%21 min
Flash flood warnings6183%1100%60 min

Each office's whole area, 2017

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Little Rock, AR: tornado warnings53689%1947%21 min
NWS Little Rock, AR: severe thunderstorm warnings32714356%32381%23 min
NWS Little Rock, AR: flash flood warnings834447%7797%76 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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Feb 6, 10:59 PM CSTSevere Thunderstorm WatchSPC9 hr
Feb 6, 11:47 PM CSTSevere Thunderstorm WarningLZK29 min
Feb 7, 1:46 AM CSTFlash Flood WarningLZK2 hr
Feb 28, 1:46 PM CSTMesoscale DiscussionSPC2 hr
Feb 28, 3:40 PM CSTTornado WatchSPC6 hr
Feb 28, 5:28 PM CSTMesoscale DiscussionSPC2 hr
Feb 28, 10:46 PM CSTMesoscale DiscussionSPC119 min
Feb 28, 11:35 PM CSTTornado WatchSPC5 hr
Mar 6, 2:50 PM CSTMesoscale DiscussionSPC85 min
Mar 6, 6:02 PM CSTMesoscale DiscussionSPC58 min
Mar 6, 8:10 PM CSTMesoscale DiscussionSPC3 hr
Mar 6, 9:16 PM CSTMesoscale DiscussionSPC119 min
Mar 6, 9:21 PM CSTTornado WatchSPC8 hr
Mar 6, 10:40 PM CSTSpecial Weather StatementLZK35 min
Mar 6, 11:20 PM CSTTornado WarningLZK40 min
Mar 6, 11:51 PM CSTTornado WarningLZK39 min
Mar 6, 11:55 PM CSTSevere Thunderstorm WarningLZK50 min
Mar 7, 12:36 AM CSTSevere Thunderstorm WarningLZK39 min
Mar 9, 5:36 PM CSTMesoscale DiscussionSPC84 min
Mar 9, 6:42 PM CSTSevere Thunderstorm WatchSPC5 hr
Mar 9, 7:18 PM CSTSevere Thunderstorm WarningLZK57 min
Mar 9, 7:44 PM CSTTornado WarningLZK31 min
Mar 9, 8:12 PM CSTTornado WarningLZK18 min
Mar 9, 8:28 PM CSTSevere Thunderstorm WarningLZK47 min
Mar 17, 6:40 PM CDTMesoscale DiscussionSPC2 hr
Mar 21, 6:58 AM CDTMesoscale DiscussionSPC2 hr
Mar 24, 3:25 PM CDTMesoscale DiscussionSPC95 min
Mar 24, 9:36 PM CDTMesoscale DiscussionSPC54 min
Mar 29, 2:51 PM CDTMesoscale DiscussionSPC2 hr
Mar 29, 4:17 PM CDTTornado WatchSPC8 hr
Mar 29, 6:57 PM CDTSevere Thunderstorm WarningLZK48 min
Mar 29, 7:16 PM CDTSpecial Weather StatementLZK44 min
Mar 29, 7:19 PM CDTTornado WarningLZK29 min
Mar 29, 7:34 PM CDTMesoscale DiscussionSPC86 min
Apr 4, 8:56 PM CDTSpecial Weather StatementLZK49 min
Apr 4, 9:12 PM CDTSevere Thunderstorm WatchSPC4 hr
Apr 4, 9:25 PM CDTSevere Thunderstorm WarningLZK35 min
Apr 4, 9:28 PM CDTMesoscale DiscussionSPC92 min
Apr 4, 9:38 PM CDTSevere Thunderstorm WarningLZK37 min
Apr 4, 9:46 PM CDTTornado WarningLZK29 min
Apr 4, 10:11 PM CDTTornado WarningLZK34 min
Apr 10, 4:30 PM CDTSpecial Weather StatementLZK45 min
Apr 21, 2:47 PM CDTAreal Flood AdvisoryLZK3 hr
Apr 21, 3:54 PM CDTMesoscale DiscussionSPC66 min
Apr 25, 10:51 PM CDTMesoscale DiscussionSPC54 min
Apr 26, 1:42 AM CDTMesoscale DiscussionSPC2 hr
Apr 26, 1:47 AM CDTSevere Thunderstorm WarningLZK43 min
Apr 26, 6:00 AM CDTSevere Thunderstorm WatchSPC7 hr
Apr 26, 7:29 AM CDTMesoscale DiscussionSPC2 hr
Apr 26, 7:43 AM CDTSpecial Weather StatementLZK47 min
Apr 26, 11:16 AM CDTFlash Flood WarningLZK3 hr
Apr 28, 6:28 PM CDTMesoscale DiscussionSPC3 hr
Apr 28, 10:01 PM CDTSevere Thunderstorm WatchSPC9 hr
Apr 28, 10:10 PM CDTSpecial Weather StatementLZK50 min
Apr 28, 10:21 PM CDTSevere Thunderstorm WarningLZK39 min
Apr 28, 10:56 PM CDTSevere Thunderstorm WarningLZK24 min
Apr 28, 11:55 PM CDTMesoscale DiscussionSPC95 min
Apr 29, 3:39 AM CDTMesoscale DiscussionSPC96 min
Apr 29, 1:42 PM CDTFlash Flood WarningLZK3 hr
Apr 29, 3:04 PM CDTSpecial Weather StatementLZK41 min
Apr 29, 4:18 PM CDTTornado WarningLZK29 min
Apr 29, 4:43 PM CDTSevere Thunderstorm WarningLZK32 min
Apr 29, 4:45 PM CDTFlash Flood WarningLZK7 hr
Apr 29, 4:51 PM CDTSevere Thunderstorm WarningLZK24 min
Apr 29, 5:13 PM CDTSevere Thunderstorm WarningLZK47 min
Apr 29, 5:36 PM CDTSevere Thunderstorm WatchSPC4 hr
Apr 30, 12:07 AM CDTAreal Flood WarningLZK9 hr
May 11, 2:22 PM CDTSpecial Weather StatementLZK23 min
May 11, 2:37 PM CDTSevere Thunderstorm WarningLZK23 min
May 11, 2:49 PM CDTMesoscale DiscussionSPC116 min
May 11, 2:58 PM CDTSevere Thunderstorm WarningLZK32 min
May 11, 3:17 PM CDTSevere Thunderstorm WatchSPC7 hr
May 11, 5:49 PM CDTMesoscale DiscussionSPC56 min
May 18, 10:58 PM CDTTornado WatchSPC6 hr
May 18, 11:48 PM CDTMesoscale DiscussionSPC57 min
May 19, 12:55 AM CDTSevere Thunderstorm WarningLZK65 min
May 19, 1:28 AM CDTSevere Thunderstorm WarningLZK62 min
May 19, 2:13 PM CDTMesoscale DiscussionSPC92 min
May 19, 7:42 PM CDTSpecial Weather StatementLZK48 min
May 19, 8:14 PM CDTSevere Thunderstorm WarningLZK46 min
May 19, 8:49 PM CDTTornado WarningLZK26 min
May 19, 9:00 PM CDTSevere Thunderstorm WarningLZK27 min
May 19, 9:16 PM CDTMesoscale DiscussionSPC59 min
May 19, 9:42 PM CDTTornado WatchSPC7 hr
May 19, 11:30 PM CDTSpecial Weather StatementLZK45 min
May 19, 11:51 PM CDTMesoscale DiscussionSPC114 min
May 20, 12:26 AM CDTSevere Thunderstorm WarningLZK49 min
May 20, 12:58 AM CDTFlash Flood WarningLZK3 hr
May 27, 12:06 AM CDTSevere Thunderstorm WatchSPC5 hr
May 27, 12:57 AM CDTSevere Thunderstorm WarningLZK48 min
May 27, 1:37 AM CDTSevere Thunderstorm WarningLZK38 min
May 27, 2:04 AM CDTMesoscale DiscussionSPC116 min
May 27, 2:11 AM CDTSevere Thunderstorm WarningLZK49 min
May 27, 3:10 AM CDTFlash Flood WarningLZK3 hr
May 27, 3:54 AM CDTMesoscale DiscussionSPC2 hr
May 27, 6:17 PM CDTMesoscale DiscussionSPC58 min
May 27, 7:01 PM CDTTornado WatchSPC6 hr
May 27, 9:38 PM CDTSevere Thunderstorm WarningLZK52 min
May 27, 10:46 PM CDTSpecial Weather StatementLZK44 min
Jun 15, 7:00 AM CDTSpecial Weather StatementLZK45 min
Jun 15, 8:02 AM CDTSevere Thunderstorm WarningLZK24 min
Jun 15, 10:02 AM CDTSevere Thunderstorm WarningLZK43 min
Jun 17, 6:02 AM CDTSpecial Weather StatementLZK43 min
Jun 18, 8:05 AM CDTMesoscale DiscussionSPC115 min
Jun 23, 12:22 PM CDTMesoscale DiscussionSPC2 hr
Jun 23, 1:24 PM CDTSpecial Weather StatementLZK36 min
Jun 23, 1:34 PM CDTSevere Thunderstorm WarningLZK26 min
Jun 23, 1:46 PM CDTSevere Thunderstorm WarningLZK29 min
Jun 23, 1:55 PM CDTSevere Thunderstorm WarningLZK35 min
Jun 23, 2:04 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 30, 2:42 AM CDTSevere Thunderstorm WatchSPC6 hr
Jun 30, 6:26 AM CDTSpecial Weather StatementLZK34 min
Jun 30, 6:30 AM CDTMesoscale DiscussionSPC2 hr
Jul 7, 8:20 PM CDTSpecial Weather StatementLZK40 min
Jul 7, 8:54 PM CDTSpecial Weather StatementLZK36 min
Aug 17, 12:20 AM CDTSpecial Weather StatementLZK55 min
Aug 18, 3:04 PM CDTMesoscale DiscussionSPC86 min
Aug 18, 6:47 PM CDTSevere Thunderstorm WarningLZK43 min
Aug 19, 2:31 PM CDTMesoscale DiscussionSPC119 min
Aug 19, 10:16 PM CDTSpecial Weather StatementLZK29 min
Aug 20, 12:35 PM CDTSpecial Weather StatementLZK40 min
Aug 20, 1:06 PM CDTMesoscale DiscussionSPC84 min
Oct 21, 11:56 PM CDTSevere Thunderstorm WatchSPC7 hr
Oct 22, 1:13 AM CDTSpecial Weather StatementLZK62 min
Oct 22, 1:44 AM CDTMesoscale DiscussionSPC91 min
Nov 6, 10:43 AM CSTMesoscale DiscussionSPC3 hr
Dec 4, 1:26 PM CSTMesoscale DiscussionSPC94 min
Dec 4, 5:34 PM CSTMesoscale DiscussionSPC86 min

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.