Alert archive / Kansas / Clay County

Weather alerts in Clay County, Kansas, 2009

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

Clay County and its neighbors

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

Alerts
126
Warnings
32
Watches
22
Advisories
27
Busiest month
June33 alerts
Busiest day
April 26, 200911 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 1 tornado warnings covering Clay County in 2009 had a tornado report inside them.

Clay County, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings10100%0
Severe thunderstorm warnings181139%888%13 min
Flash flood warnings20100%0

Each office's whole area, 2009

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS Topeka, KS: tornado warnings21671%875%13 min
NWS Topeka, KS: severe thunderstorm warnings22714735%45182%23 min
NWS Topeka, KS: flash flood warnings341459%2969%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, Central Time. Each opens its own page with the text, the map, the radar and the sounding.

IssuedProductOfficeLasted
Jan 11, 3:12 PM CSTWind AdvisoryTOP31 hr
Jan 31, 5:32 AM CSTRed Flag WarningTOP12 hr
Feb 8, 3:24 PM CSTWind AdvisoryTOP29 hr
Feb 9, 2:19 PM CSTHigh Wind WarningTOP4 hr
Feb 10, 3:42 PM CSTWind AdvisoryTOP11 hr
Mar 6, 9:17 PM CSTMesoscale DiscussionSPC118 min
Mar 7, 12:44 AM CSTMesoscale DiscussionSPC2 hr
Mar 22, 3:52 PM CDTWind AdvisoryTOP21 hr
Mar 23, 10:12 AM CDTHigh Wind WarningTOP9 hr
Mar 23, 12:39 PM CDTMesoscale DiscussionSPC96 min
Mar 23, 1:03 PM CDTTornado WatchSPC6 hr
Mar 23, 3:11 PM CDTMesoscale DiscussionSPC94 min
Mar 23, 4:26 PM CDTSevere Thunderstorm WarningTOP28 min
Mar 23, 5:06 PM CDTSevere Thunderstorm WarningTOP39 min
Mar 23, 5:08 PM CDTMesoscale DiscussionSPC97 min
Mar 23, 5:19 PM CDTSevere Thunderstorm WarningTOP26 min
Mar 23, 5:45 PM CDTSevere Thunderstorm WarningTOP15 min
Mar 23, 7:07 PM CDTWind AdvisoryTOP5 hr
Mar 26, 11:07 AM CDTWinter Storm WatchTOP18 hr
Mar 27, 4:37 AM CDTWinter Weather AdvisoryTOP35 hr
Mar 31, 3:44 AM CDTWind AdvisoryTOP13 hr
Apr 2, 5:36 AM CDTWinter Weather AdvisoryTOP4 hr
Apr 4, 11:10 AM CDTWind AdvisoryTOP8 hr
Apr 4, 1:12 PM CDTMesoscale DiscussionSPC2 hr
Apr 4, 2:06 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 4, 9:51 PM CDTWind AdvisoryTOP21 hr
Apr 25, 3:15 PM CDTFlood WatchTOP44 hr
Apr 25, 9:58 PM CDTMesoscale DiscussionSPC92 min
Apr 25, 10:09 PM CDTSevere Thunderstorm WatchSPC6 hr
Apr 26, 2:10 AM CDTMesoscale DiscussionSPC95 min
Apr 26, 5:58 AM CDTTornado WatchSPC7 hr
Apr 26, 10:54 AM CDTMesoscale DiscussionSPC66 min
Apr 26, 11:07 AM CDTTornado Watch PDSSPC7 hr
Apr 26, 12:27 PM CDTMesoscale DiscussionSPC2 hr
Apr 26, 1:49 PM CDTSevere Thunderstorm WarningTOP26 min
Apr 26, 2:41 PM CDTMesoscale DiscussionSPC3 hr
Apr 26, 3:19 PM CDTTornado WarningTOP26 min
Apr 26, 3:50 PM CDTFlash Flood WarningTOP3 hr
Apr 26, 9:21 PM CDTRiver Flood WarningTOP24 hr
May 11, 3:53 AM CDTDense Fog AdvisoryTOP4 hr
May 15, 2:03 AM CDTMesoscale DiscussionSPC87 min
May 15, 7:42 AM CDTSevere Thunderstorm WatchSPC5 hr
Jun 1, 2:55 PM CDTMesoscale DiscussionSPC2 hr
Jun 1, 11:40 PM CDTMesoscale DiscussionSPC2 hr
Jun 1, 11:46 PM CDTRiver Flood WarningTOP11 hr
Jun 6, 2:22 AM CDTMesoscale DiscussionSPC23 min
Jun 6, 5:21 PM CDTMesoscale DiscussionSPC114 min
Jun 6, 9:01 PM CDTSevere Thunderstorm WatchSPC6 hr
Jun 6, 9:58 PM CDTSevere Thunderstorm WarningTOP47 min
Jun 6, 10:01 PM CDTSevere Thunderstorm WarningTOP34 min
Jun 6, 10:28 PM CDTSevere Thunderstorm WarningTOP47 min
Jun 6, 11:04 PM CDTMesoscale DiscussionSPC86 min
Jun 7, 4:45 AM CDTMesoscale DiscussionSPC30 min
Jun 7, 5:07 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 9, 7:16 AM CDTMesoscale DiscussionSPC59 min
Jun 9, 8:28 AM CDTSevere Thunderstorm WarningTOP26 min
Jun 9, 8:40 AM CDTMesoscale DiscussionSPC65 min
Jun 9, 9:02 AM CDTSevere Thunderstorm WatchSPC6 hr
Jun 9, 9:05 AM CDTSevere Thunderstorm WarningTOP25 min
Jun 9, 9:16 AM CDTFlash Flood WarningTOP116 min
Jun 9, 11:11 AM CDTMesoscale DiscussionSPC94 min
Jun 14, 10:36 PM CDTMesoscale DiscussionSPC114 min
Jun 14, 11:45 PM CDTSevere Thunderstorm WatchSPC7 hr
Jun 15, 3:55 AM CDTMesoscale DiscussionSPC65 min
Jun 15, 3:24 PM CDTFlash Flood WatchTOP15 hr
Jun 15, 5:04 PM CDTMesoscale DiscussionSPC86 min
Jun 15, 6:01 PM CDTTornado WatchSPC6 hr
Jun 15, 7:33 PM CDTMesoscale DiscussionSPC87 min
Jun 15, 7:40 PM CDTSevere Thunderstorm WarningTOP20 min
Jun 15, 9:32 PM CDTMesoscale DiscussionSPC88 min
Jun 17, 12:17 PM CDTMesoscale DiscussionSPC58 min
Jun 20, 7:56 PM CDTTornado WatchSPC5 hr
Jun 20, 10:09 PM CDTMesoscale DiscussionSPC66 min
Jun 21, 9:35 PM CDTHeat AdvisoryTOP39 hr
Jun 23, 12:56 PM CDTExcessive Heat WarningTOP4 days
Jul 3, 1:37 AM CDTMesoscale DiscussionSPC2 hr
Jul 3, 3:43 PM CDTMesoscale DiscussionSPC92 min
Jul 3, 4:59 PM CDTTornado WatchSPC6 hr
Jul 3, 6:46 PM CDTSevere Thunderstorm WarningTOP44 min
Jul 3, 8:18 PM CDTMesoscale DiscussionSPC57 min
Jul 3, 9:05 PM CDTSevere Thunderstorm WarningTOP25 min
Jul 8, 2:59 PM CDTMesoscale DiscussionSPC61 min
Jul 12, 4:48 AM CDTMesoscale DiscussionSPC57 min
Jul 14, 3:05 PM CDTMesoscale DiscussionSPC115 min
Jul 14, 11:25 PM CDTSevere Thunderstorm WarningTOP40 min
Jul 15, 2:56 AM CDTMesoscale DiscussionSPC2 hr
Aug 4, 12:45 AM CDTSevere Thunderstorm WarningTOP45 min
Aug 4, 1:10 AM CDTSevere Thunderstorm WatchSPC6 hr
Aug 9, 1:18 PM CDTMesoscale DiscussionSPC27 min
Aug 9, 3:44 PM CDTSevere Thunderstorm WatchSPC6 hr
Aug 9, 4:53 PM CDTSevere Thunderstorm WarningTOP37 min
Aug 10, 9:21 AM CDTSevere Thunderstorm WatchSPC6 hr
Aug 10, 11:29 AM CDTMesoscale DiscussionSPC91 min
Aug 17, 5:52 AM CDTAreal Flood AdvisoryTOP3 hr
Aug 19, 6:51 PM CDTMesoscale DiscussionSPC54 min
Aug 19, 7:11 PM CDTSevere Thunderstorm WatchSPC8 hr
Aug 19, 8:04 PM CDTSevere Thunderstorm WarningTOP41 min
Aug 19, 8:52 PM CDTSevere Thunderstorm WarningTOP38 min
Aug 19, 10:25 PM CDTMesoscale DiscussionSPC95 min
Aug 26, 5:45 AM CDTMesoscale DiscussionSPC90 min
Sep 3, 5:07 PM CDTMesoscale DiscussionSPC83 min
Sep 3, 10:07 PM CDTAreal Flood AdvisoryTOP4 hr
Sep 5, 2:54 AM CDTDense Fog AdvisoryTOP6 hr
Sep 21, 5:07 AM CDTAreal Flood AdvisoryTOP4 hr
Sep 21, 8:39 AM CDTAreal Flood AdvisoryTOP51 min
Oct 1, 1:47 PM CDTWind AdvisoryTOP29 hr
Oct 9, 3:26 PM CDTFreeze WarningTOP19 hr
Oct 10, 4:02 AM CDTFreeze WarningTOP22 hr
Nov 15, 3:25 PM CSTWinter Weather AdvisoryTOP36 hr
Nov 16, 6:41 AM CSTMesoscale DiscussionSPC5 hr
Nov 20, 3:42 AM CSTDense Fog AdvisoryTOP6 hr
Nov 20, 10:06 AM CSTDense Fog AdvisoryTOP114 min
Dec 6, 3:57 AM CSTWinter Storm WatchTOP35 hr
Dec 6, 5:00 PM CSTWinter Weather AdvisoryTOP5 hr
Dec 7, 3:08 AM CSTWinter Storm WarningTOP51 hr
Dec 7, 3:01 PM CSTWinter Weather AdvisoryTOP45 hr
Dec 8, 5:37 AM CSTMesoscale DiscussionSPC3 hr
Dec 8, 11:22 AM CSTMesoscale DiscussionSPC5 hr
Dec 9, 4:52 PM CSTWind Chill AdvisoryTOP16 hr
Dec 13, 5:30 PM CSTDense Fog AdvisoryTOP9 hr
Dec 21, 4:05 AM CSTWinter Storm WatchTOP59 hr
Dec 22, 2:53 PM CSTWinter Weather AdvisoryTOP18 hr
Dec 23, 2:56 PM CSTWinter Storm WarningTOP24 hr
Dec 24, 3:33 AM CSTWinter Weather AdvisoryTOP48 hr
Dec 24, 1:32 PM CSTMesoscale DiscussionSPC4 hr
Dec 24, 3:13 PM CSTWinter Storm WarningTOP16 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 Warning18
Tornado Warning1
Severe Thunderstorm Watch11
Tornado Watch6
Mesoscale Discussion45
Flooding
Flash Flood Warning2
River Flood Warning2
Flash Flood Watch1
Flood Watch1
Areal Flood Advisory4
Winter
Winter Storm Warning3
Winter Storm Watch3
Winter Weather Advisory7
Heat
Excessive Heat Warning1
Heat Advisory1
Cold
Freeze Warning2
Wind Chill Advisory1
Wind and dust
High Wind Warning2
Wind Advisory9
Fire
Red Flag Warning1
Fog and smoke
Dense Fog Advisory5

The busiest days

Days with the most alerts issued, by UTC date.

  1. April 26, 200911alerts
  2. March 23, 20099alerts
  3. June 7, 20097alerts
  4. June 9, 20097alerts
  5. June 15, 20096alerts
  6. July 3, 20094alerts
  7. August 20, 20094alerts
  8. April 4, 20093alerts
  9. June 16, 20093alerts
  10. August 9, 20093alerts

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.