Alert archive / Arkansas / Montgomery County

Weather alerts in Montgomery County, Arkansas, 2009

171 weather alerts in 2009, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.

Montgomery County and its neighbors

Each county as a circle sized by its count in 2009. Tap one for its archive.

Alerts
171
Warnings
92
Watches
21
Advisories
1
Busiest month
July38 alerts
Busiest day
May 6, 200913 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 6 tornado warnings covering Montgomery County in 2009 had a tornado report inside them.

Montgomery County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings60100%0
Severe thunderstorm warnings571574%367%14 min
Flash flood warnings241154%0

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Little Rock, AR: tornado warnings50884%1182%26 min
NWS Little Rock, AR: severe thunderstorm warnings54817468%41385%25 min
NWS Little Rock, AR: flash flood warnings1677157%13887%95 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
Jan 5, 11:13 AM CSTMesoscale DiscussionSPC6 hr
Jan 26, 10:54 AM CSTMesoscale DiscussionSPC4 hr
Jan 26, 6:59 PM CSTMesoscale DiscussionSPC5 hr
Jan 27, 12:16 PM CSTMesoscale DiscussionSPC6 hr
Feb 10, 4:50 PM CSTMesoscale DiscussionSPC85 min
Feb 10, 8:34 PM CSTMesoscale DiscussionSPC86 min
Feb 10, 9:30 PM CSTTornado WatchSPC7 hr
Feb 10, 11:13 PM CSTMesoscale DiscussionSPC92 min
Feb 17, 5:44 PM CSTMesoscale DiscussionSPC3 hr
Feb 26, 5:56 PM CSTMesoscale DiscussionSPC94 min
Feb 26, 6:12 PM CSTSevere Thunderstorm WatchSPC8 hr
Feb 26, 7:42 PM CSTMesoscale DiscussionSPC93 min
Feb 26, 10:36 PM CSTMesoscale DiscussionSPC114 min
Feb 27, 2:40 PM CSTMesoscale DiscussionSPC65 min
Mar 24, 2:33 PM CDTMesoscale DiscussionSPC87 min
Mar 26, 9:28 PM CDTMesoscale DiscussionSPC62 min
Mar 26, 9:56 PM CDTSevere Thunderstorm WarningLZK32 min
Mar 27, 6:35 PM CDTTornado WatchSPC7 hr
Mar 27, 9:09 PM CDTSevere Thunderstorm WarningLZK21 min
Mar 27, 9:19 PM CDTTornado WarningLZK41 min
Mar 27, 9:49 PM CDTSevere Thunderstorm WarningLZK26 min
Mar 27, 10:24 PM CDTMesoscale DiscussionSPC96 min
Apr 2, 12:50 PM CDTMesoscale DiscussionSPC85 min
Apr 9, 6:59 PM CDTMesoscale DiscussionSPC91 min
Apr 9, 7:21 PM CDTTornado WatchSPC5 hr
Apr 9, 8:22 PM CDTSevere Thunderstorm WarningLZK38 min
Apr 9, 8:25 PM CDTTornado WarningLZK35 min
Apr 9, 8:42 PM CDTTornado WarningLZK48 min
Apr 9, 8:44 PM CDTMesoscale DiscussionSPC61 min
Apr 9, 8:56 PM CDTTornado WarningLZK22 min
Apr 9, 9:06 PM CDTTornado WarningLZK54 min
Apr 9, 9:15 PM CDTTornado WarningLZK45 min
Apr 12, 7:13 AM CDTMesoscale DiscussionSPC92 min
Apr 12, 7:44 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 12, 9:15 AM CDTSevere Thunderstorm WarningLZK30 min
Apr 19, 4:55 AM CDTSevere Thunderstorm WarningLZK50 min
Apr 27, 2:24 PM CDTMesoscale DiscussionSPC66 min
Apr 27, 2:57 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 27, 7:08 PM CDTMesoscale DiscussionSPC67 min
Apr 27, 8:54 PM CDTMesoscale DiscussionSPC66 min
Apr 28, 3:48 AM CDTAreal Flood AdvisoryLZK164 days
Apr 28, 5:43 PM CDTMesoscale DiscussionSPC62 min
Apr 29, 9:36 AM CDTSevere Thunderstorm WatchSPC6 hr
Apr 29, 12:58 PM CDTMesoscale DiscussionSPC2 hr
Apr 29, 3:27 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 29, 4:27 PM CDTSevere Thunderstorm WarningLZK48 min
Apr 29, 5:24 PM CDTSevere Thunderstorm WarningLZK51 min
Apr 29, 7:47 PM CDTFlash Flood WarningLZK3 hr
May 1, 7:26 AM CDTSevere Thunderstorm WatchSPC7 hr
May 1, 1:22 PM CDTMesoscale DiscussionSPC53 min
May 1, 9:36 PM CDTMesoscale DiscussionSPC84 min
May 1, 9:56 PM CDTSevere Thunderstorm WatchSPC6 hr
May 2, 1:45 AM CDTMesoscale DiscussionSPC90 min
May 2, 7:54 AM CDTSevere Thunderstorm WarningLZK41 min
May 2, 9:23 AM CDTMesoscale DiscussionSPC97 min
May 2, 11:35 AM CDTFlash Flood WarningLZK6 hr
May 2, 12:34 PM CDTSevere Thunderstorm WarningLZK41 min
May 2, 3:40 PM CDTFlash Flood WarningLZK6 hr
May 5, 10:07 PM CDTMesoscale DiscussionSPC83 min
May 5, 10:27 PM CDTSevere Thunderstorm WatchSPC8 hr
May 5, 11:30 PM CDTSevere Thunderstorm WarningLZK60 min
May 6, 12:15 AM CDTSevere Thunderstorm WarningLZK45 min
May 6, 12:18 AM CDTFlash Flood WarningLZK4 hr
May 6, 12:26 AM CDTSevere Thunderstorm WarningLZK49 min
May 6, 1:12 AM CDTFlash Flood WarningLZK3 hr
May 6, 1:15 AM CDTSevere Thunderstorm WarningLZK45 min
May 6, 1:27 AM CDTMesoscale DiscussionSPC3 hr
May 6, 1:43 AM CDTFlash Flood WarningLZK3 hr
May 6, 2:26 AM CDTMesoscale DiscussionSPC2 hr
May 6, 6:55 AM CDTFlash Flood WarningLZK5 hr
May 6, 12:01 PM CDTAreal Flood WarningLZK3 hr
May 8, 5:52 PM CDTTornado WatchSPC11 hr
May 9, 12:51 PM CDTSevere Thunderstorm WatchSPC7 hr
May 9, 1:55 PM CDTSevere Thunderstorm WarningLZK25 min
May 10, 1:10 AM CDTSevere Thunderstorm WarningLZK50 min
May 12, 9:10 AM CDTMesoscale DiscussionSPC65 min
May 12, 10:34 AM CDTFlash Flood WarningLZK3 hr
May 13, 11:27 PM CDTMesoscale DiscussionSPC93 min
May 14, 2:38 AM CDTSevere Thunderstorm WarningLZK52 min
May 14, 5:53 AM CDTFlash Flood WarningLZK3 hr
May 16, 3:29 AM CDTSevere Thunderstorm WarningLZK20 min
May 16, 8:15 AM CDTFlash Flood WarningLZK3 hr
Jun 3, 6:26 AM CDTMesoscale DiscussionSPC2 hr
Jun 10, 6:17 PM CDTMesoscale DiscussionSPC58 min
Jun 10, 6:37 PM CDTSevere Thunderstorm WatchSPC8 hr
Jun 10, 8:39 PM CDTMesoscale DiscussionSPC66 min
Jun 10, 11:07 PM CDTMesoscale DiscussionSPC83 min
Jun 10, 11:59 PM CDTSevere Thunderstorm WarningLZK61 min
Jun 11, 12:24 AM CDTSevere Thunderstorm WarningLZK52 min
Jun 12, 9:38 AM CDTMesoscale DiscussionSPC67 min
Jun 12, 10:03 AM CDTMesoscale DiscussionSPC87 min
Jun 12, 11:35 AM CDTSevere Thunderstorm Watch PDSSPC9 hr
Jun 12, 1:28 PM CDTSevere Thunderstorm WarningLZK47 min
Jun 12, 1:30 PM CDTMesoscale DiscussionSPC90 min
Jun 12, 1:49 PM CDTSevere Thunderstorm WarningLZK56 min
Jun 12, 10:08 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 12, 11:10 PM CDTMesoscale DiscussionSPC65 min
Jun 13, 3:25 AM CDTMesoscale DiscussionSPC65 min
Jun 13, 5:07 PM CDTMesoscale DiscussionSPC53 min
Jun 14, 1:51 AM CDTSevere Thunderstorm WatchSPC4 hr
Jun 14, 5:26 AM CDTMesoscale DiscussionSPC94 min
Jun 30, 12:53 PM CDTMesoscale DiscussionSPC97 min
Jun 30, 1:54 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 30, 3:47 PM CDTMesoscale DiscussionSPC58 min
Jun 30, 5:08 PM CDTSevere Thunderstorm WarningLZK52 min
Jun 30, 6:14 PM CDTMesoscale DiscussionSPC2 hr
Jun 30, 7:07 PM CDTSevere Thunderstorm WarningLZK38 min
Jun 30, 7:51 PM CDTSevere Thunderstorm WarningLZK39 min
Jul 4, 3:36 PM CDTMesoscale DiscussionSPC54 min
Jul 13, 3:25 PM CDTMesoscale DiscussionSPC65 min
Jul 13, 4:44 PM CDTSevere Thunderstorm WarningLZK46 min
Jul 13, 5:24 PM CDTSevere Thunderstorm WarningLZK51 min
Jul 13, 5:29 PM CDTFlash Flood WarningLZK3 hr
Jul 13, 5:59 PM CDTSevere Thunderstorm WarningLZK46 min
Jul 13, 6:12 PM CDTSevere Thunderstorm WarningLZK48 min
Jul 13, 6:51 PM CDTSevere Thunderstorm WarningLZK39 min
Jul 13, 7:01 PM CDTSevere Thunderstorm WarningLZK44 min
Jul 13, 7:22 PM CDTSevere Thunderstorm WarningLZK38 min
Jul 13, 7:47 PM CDTSevere Thunderstorm WarningLZK43 min
Jul 13, 7:58 PM CDTSevere Thunderstorm WarningLZK33 min
Jul 13, 8:31 PM CDTFlash Flood WarningLZK2 hr
Jul 15, 3:40 PM CDTSevere Thunderstorm WarningLZK50 min
Jul 16, 2:19 PM CDTMesoscale DiscussionSPC56 min
Jul 16, 3:00 PM CDTSevere Thunderstorm WarningLZK45 min
Jul 16, 3:19 PM CDTSevere Thunderstorm WarningLZK41 min
Jul 16, 3:33 PM CDTSevere Thunderstorm WatchSPC6 hr
Jul 16, 3:43 PM CDTSevere Thunderstorm WarningLZK47 min
Jul 16, 4:07 PM CDTFlash Flood WarningLZK4 hr
Jul 16, 4:16 PM CDTSevere Thunderstorm WarningLZK44 min
Jul 16, 4:31 PM CDTSevere Thunderstorm WarningLZK31 min
Jul 16, 4:37 PM CDTSevere Thunderstorm WarningLZK38 min
Jul 20, 3:37 PM CDTSevere Thunderstorm WarningLZK38 min
Jul 25, 6:30 PM CDTSevere Thunderstorm WarningLZK45 min
Jul 25, 7:12 PM CDTSevere Thunderstorm WarningLZK29 min
Jul 26, 2:46 PM CDTSevere Thunderstorm WarningLZK44 min
Jul 26, 3:14 PM CDTSevere Thunderstorm WarningLZK46 min
Jul 26, 4:32 PM CDTSevere Thunderstorm WarningLZK43 min
Jul 26, 4:47 PM CDTFlash Flood WarningLZK3 hr
Jul 26, 5:00 PM CDTSevere Thunderstorm WarningLZK45 min
Jul 26, 5:37 PM CDTSevere Thunderstorm WarningLZK38 min
Jul 26, 5:45 PM CDTSevere Thunderstorm WarningLZK45 min
Jul 26, 6:15 PM CDTSevere Thunderstorm WarningLZK45 min
Jul 26, 6:24 PM CDTSevere Thunderstorm WarningLZK51 min
Jul 26, 7:05 PM CDTFlash Flood WarningLZK3 hr
Aug 1, 9:26 AM CDTFlash Flood WarningLZK3 hr
Aug 5, 5:34 PM CDTMesoscale DiscussionSPC116 min
Aug 18, 4:46 PM CDTSevere Thunderstorm WarningLZK44 min
Sep 3, 6:18 AM CDTFlash Flood WarningLZK3 hr
Sep 3, 6:44 AM CDTFlash Flood WarningLZK3 hr
Sep 15, 3:04 PM CDTMesoscale DiscussionSPC2 hr
Sep 16, 7:33 AM CDTFlash Flood WarningLZK4 hr
Sep 21, 10:18 PM CDTSevere Thunderstorm WarningLZK42 min
Oct 1, 5:12 PM CDTMesoscale DiscussionSPC93 min
Oct 1, 6:29 PM CDTSevere Thunderstorm WatchSPC8 hr
Oct 1, 7:06 PM CDTSevere Thunderstorm WarningLZK24 min
Oct 5, 4:30 PM CDTSevere Thunderstorm WarningLZK30 min
Oct 5, 5:36 PM CDTSevere Thunderstorm WarningLZK18 min
Oct 9, 1:39 AM CDTFlash Flood WarningLZK6 hr
Oct 9, 2:38 AM CDTMesoscale DiscussionSPC52 min
Oct 9, 6:10 AM CDTFlash Flood WarningLZK3 hr
Oct 9, 6:19 AM CDTFlash Flood WarningLZK4 hr
Oct 9, 7:37 AM CDTFlash Flood WarningLZK3 hr
Oct 9, 8:58 AM CDTAreal Flood WarningLZK4 hr
Oct 15, 2:15 AM CDTMesoscale DiscussionSPC3 hr
Oct 29, 1:51 PM CDTTornado WatchSPC7 hr
Oct 29, 3:03 PM CDTMesoscale DiscussionSPC117 min
Oct 29, 7:05 PM CDTMesoscale DiscussionSPC55 min
Oct 29, 7:12 PM CDTFlash Flood WarningLZK6 hr
Dec 24, 3:22 AM CSTAreal Flood WarningLZK6 hr
Dec 24, 6:34 AM CSTAreal Flood WarningLZK4 hr
Dec 24, 9:43 AM CSTAreal Flood WarningLZK4 hr

By product

Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.

ProductAlerts
Severe storms
Severe Thunderstorm Warning57
Tornado Warning6
Severe Thunderstorm Watch16
Tornado Watch5
Mesoscale Discussion57
Flooding
Areal Flood Warning5
Flash Flood Warning24
Areal Flood Advisory1

The busiest days

Days with the most alerts issued, by UTC date.

  1. May 6, 200913alerts
  2. July 26, 200910alerts
  3. July 16, 20099alerts
  4. April 10, 20098alerts
  5. May 2, 20098alerts
  6. July 13, 20097alerts
  7. June 12, 20096alerts
  8. October 9, 20096alerts
  9. April 29, 20095alerts
  10. June 30, 20095alerts

Nearby

Alerts in force nowTornadoes on recordForecastThe radar archive20082010

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.