Alert archive / Missouri / Tornado Warnings

Tornado Warnings in Missouri, 2021

121 tornado warnings in 2021. An alert counts here when it covered any part of the state, so the counties below add up to more than the state. The archive of tornado warnings reaches back to 1986.

Tornado Warnings by county

Each county as a circle sized by its count in 2021. Tap one for its archive.

Tornado Warnings
121
Busiest month
October36 tornado warnings
Busiest day
December 11, 202130 tornado warnings

Over time

By month

Warning verification

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

37 of 121 tornado warnings covering Missouri in 2021 had a tornado report inside them; 47 of 67 tornado reports fell inside a warning, on average 16 minutes after it went out.

Missouri, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
Tornado warnings1213769%6770%16 min

Each office's whole area, 2021

WarningsWith a reportFalse alarm ratioReportsInside a warningMean lead time
NWS St. Louis, MO: tornado warnings601772%4571%17 min
NWS Springfield, MO: tornado warnings37976%2167%14 min
NWS Memphis, TN: tornado warnings833558%6289%22 min
NWS Paducah, KY: tornado warnings511669%3352%19 min
NWS Kansas City, MO: tornado warnings281161%1385%9 min
NWS Quad Cities, IA: tornado warnings301357%2976%17 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.

IssuedProductOfficeCountiesLasted
Jan 30, 3:30 PM CSTTornado WarningSGFNewton30 min
Jan 30, 3:45 PM CSTTornado WarningSGFJasper, Newton30 min
Jan 30, 3:51 PM CSTTornado WarningSGFBarry, Lawrence, Newton24 min
Jan 30, 4:10 PM CSTTornado WarningSGFMcDonald, Newton35 min
Jan 30, 4:44 PM CSTTornado WarningSGFBarry31 min
Mar 15, 4:26 PM CDTTornado WarningEAXCass, Jackson34 min
Mar 15, 4:47 PM CDTTornado WarningEAXCass28 min
Mar 15, 5:07 PM CDTTornado WarningEAXCass, Johnson38 min
Mar 15, 5:14 PM CDTTornado WarningEAXCass, Jackson31 min
Mar 15, 5:38 PM CDTTornado WarningEAXJohnson37 min
Mar 15, 5:45 PM CDTTornado WarningEAXPettis31 min
Mar 15, 6:27 PM CDTTornado WarningEAXPettis33 min
Mar 17, 5:12 PM CDTTornado WarningSGFBarry33 min
Mar 17, 5:33 PM CDTTornado WarningSGFBarry, Lawrence27 min
Mar 17, 5:38 PM CDTTornado WarningSGFBarry37 min
Mar 17, 6:13 PM CDTTornado WarningSGFBarry, Stone17 min
Mar 17, 6:20 PM CDTTornado Warning Tornado observedSGFBarry, Stone25 min
Mar 17, 6:37 PM CDTTornado WarningSGFStone23 min
Mar 17, 7:43 PM CDTTornado WarningSGFDouglas32 min
Mar 23, 7:04 PM CDTTornado WarningLSXPike41 min
Mar 23, 7:35 PM CDTTornado WarningLSXPike25 min
Apr 7, 2:46 PM CDTTornado WarningSGFBenton, Morgan29 min
Apr 28, 9:03 AM CDTTornado WarningSGFStone27 min
Apr 28, 9:14 AM CDTTornado WarningSGFTaney31 min
Apr 28, 9:43 AM CDTTornado WarningSGFChristian, Taney32 min
Apr 28, 10:14 AM CDTTornado WarningSGFChristian, Douglas, Webster31 min
Apr 28, 10:24 AM CDTTornado WarningSGFOzark36 min
Apr 28, 10:58 AM CDTTornado WarningSGFDouglas, Ozark32 min
Apr 28, 12:02 PM CDTTornado WarningSGFHowell, Oregon, Shannon28 min
May 4, 1:55 AM CDTTornado WarningPAHRipley21 min
May 6, 1:24 PM CDTTornado Warning Tornado observedPAHCape Girardeau, Scott31 min
Jun 20, 9:07 PM CDTTornado WarningLSXMarion, Shelby38 min
Jun 24, 9:13 PM CDTTornado WarningEAXGrundy, Sullivan17 min
Jun 24, 9:40 PM CDTTornado WarningEAXPutnam, Sullivan20 min
Jun 24, 9:58 PM CDTTornado WarningEAXAdair, Sullivan17 min
Jun 24, 10:18 PM CDTTornado WarningEAXCarroll, Lafayette, Saline27 min
Jun 24, 11:03 PM CDTTornado WarningLSXMonroe, Shelby42 min
Jun 24, 11:32 PM CDTTornado WarningLSXLewis28 min
Jun 24, 11:35 PM CDTTornado WarningLSXAudrain, Monroe, Ralls40 min
Jun 24, 11:40 PM CDTTornado WarningLSXMarion, Monroe, Ralls, Shelby38 min
Jun 25, 12:09 AM CDTTornado WarningLSXAudrain, Pike, Ralls51 min
Jun 25, 4:52 PM CDTTornado WarningEAXHenry, Johnson23 min
Jun 26, 1:37 PM CDTTornado WarningLSXLincoln, Pike38 min
Jul 9, 9:36 PM CDTTornado WarningEAXAdair, Macon12 min
Jul 10, 8:23 PM CDTTornado WarningPAHStoddard52 min
Jul 10, 9:22 PM CDTTornado WarningPAHNew Madrid38 min
Jul 31, 9:06 PM CDTTornado WarningMEGDunklin, Pemiscot24 min
Aug 8, 7:14 PM CDTTornado WarningPAHButler, Stoddard31 min
Aug 8, 7:34 PM CDTTornado WarningPAHButler, Stoddard41 min
Aug 8, 7:41 PM CDTTornado WarningMEGDunklin34 min
Oct 11, 12:25 AM CDTTornado Warning Tornado observedSGFMcDonald35 min
Oct 11, 1:16 AM CDTTornado Warning Tornado observedSGFNewton29 min
Oct 11, 4:42 AM CDTTornado WarningSGFBarton, Dade, Jasper18 min
Oct 11, 4:54 AM CDTTornado Warning Tornado observedSGFBarton, Cedar, Dade21 min
Oct 11, 5:09 AM CDTTornado WarningSGFCedar, Vernon21 min
Oct 24, 2:12 PM CDTTornado Warning Tornado observedEAXAndrew, Holt33 min
Oct 24, 2:31 PM CDTTornado WarningEAXAndrew, Buchanan, DeKalb29 min
Oct 24, 2:39 PM CDTTornado WarningEAXAndrew23 min
Oct 24, 2:51 PM CDTTornado WarningEAXBuchanan, Clinton, DeKalb24 min
Oct 24, 3:23 PM CDTTornado WarningEAXDaviess, DeKalb, Gentry37 min
Oct 24, 3:26 PM CDTTornado WarningEAXCaldwell, Clinton34 min
Oct 24, 3:50 PM CDTTornado WarningEAXCaldwell, Daviess, Livingston25 min
Oct 24, 4:10 PM CDTTornado WarningEAXLivingston35 min
Oct 24, 4:16 PM CDTTornado WarningEAXGrundy, Harrison, Mercer29 min
Oct 24, 4:37 PM CDTTornado WarningEAXLinn, Livingston, Sullivan38 min
Oct 24, 4:57 PM CDTTornado WarningEAXCooper, Pettis33 min
Oct 24, 5:01 PM CDTTornado WarningSGFMorgan16 min
Oct 24, 5:10 PM CDTTornado WarningEAXAdair, Linn, Macon, Sullivan35 min
Oct 24, 5:17 PM CDTTornado WarningLSXPike43 min
Oct 24, 6:39 PM CDTTornado WarningSGFCamden, Laclede, Miller, Pulaski36 min
Oct 24, 7:06 PM CDTTornado WarningLSXReynolds39 min
Oct 24, 7:06 PM CDTTornado WarningSGFDent, Shannon9 min
Oct 24, 7:09 PM CDTTornado WarningLSXCrawford, Iron, Washington31 min
Oct 24, 7:48 PM CDTTornado WarningLSXIron, Madison, Reynolds, Saint Francois27 min
Oct 24, 8:03 PM CDTTornado WarningLSXSainte Genevieve, Saint Francois42 min
Oct 24, 8:08 PM CDTTornado WarningSGFDouglas, Wright23 min
Oct 24, 8:09 PM CDTTornado WarningLSXSainte Genevieve, Saint Francois40 min
Oct 24, 8:10 PM CDTTornado WarningLSXIron, Madison, Reynolds50 min
Oct 24, 8:23 PM CDTTornado WarningLSXIron, Madison, Reynolds52 min
Oct 24, 8:34 PM CDTTornado Warning Tornado observedConsiderable damage threatLSXSainte Genevieve41 min
Oct 24, 8:42 PM CDTTornado Warning Tornado observedPAHPerry48 min
Oct 24, 8:48 PM CDTTornado Warning Tornado observedConsiderable damage threatLSXMadison, Saint Francois27 min
Oct 24, 9:03 PM CDTTornado Warning Tornado observedConsiderable damage threatPAHPerry57 min
Oct 24, 9:11 PM CDTTornado WarningLSXIron, Madison49 min
Oct 24, 11:13 PM CDTTornado WarningPAHCape Girardeau18 min
Oct 24, 11:20 PM CDTTornado WarningPAHBollinger, Cape Girardeau25 min
Dec 5, 9:29 PM CSTTornado WarningPAHPerry31 min
Dec 5, 10:12 PM CSTTornado WarningPAHPerry18 min
Dec 10, 5:59 PM CSTTornado WarningSGFLaclede, Webster, Wright31 min
Dec 10, 6:21 PM CSTTornado WarningSGFLaclede, Pulaski, Texas, Wright39 min
Dec 10, 6:25 PM CSTTornado WarningSGFMaries, Phelps, Pulaski35 min
Dec 10, 6:27 PM CSTTornado WarningLSXAudrain, Callaway34 min
Dec 10, 6:30 PM CSTTornado WarningLSXCallaway, Cole, Gasconade, Montgomery, Osage45 min
Dec 10, 6:42 PM CSTTornado WarningLSXPike48 min
Dec 10, 6:48 PM CSTTornado WarningSGFMaries, Phelps15 min
Dec 10, 6:49 PM CSTTornado WarningLSXFranklin, Gasconade, Osage, Warren41 min
Dec 10, 6:50 PM CSTTornado WarningLSXAudrain, Callaway, Montgomery, Pike, Ralls40 min
Dec 10, 7:00 PM CSTTornado WarningLSXGasconade, Lincoln, Montgomery, Pike, Warren45 min
Dec 10, 7:02 PM CSTTornado WarningLSXCrawford, Franklin, Gasconade43 min
Dec 10, 7:06 PM CSTTornado Warning Tornado observedConsiderable damage threatMEGDunklin39 min
Dec 10, 7:11 PM CSTTornado WarningLSXLincoln, Montgomery, Pike49 min
Dec 10, 7:16 PM CSTTornado WarningLSXFranklin, Lincoln, Saint Charles, Warren44 min
Dec 10, 7:26 PM CSTTornado WarningSGFBarry, Christian, Stone34 min
Dec 10, 7:28 PM CSTTornado Warning EmergencyTornado observedConsiderable damage threatMEGDunklin, Pemiscot47 min
Dec 10, 7:30 PM CSTTornado WarningLSXLincoln45 min
Dec 10, 7:35 PM CSTTornado Warning Tornado observedLSXFranklin, Jefferson, Lincoln, Saint Charles, Saint Louis, Warren40 min
Dec 10, 7:39 PM CSTTornado WarningSGFChristian, Stone, Taney36 min
Dec 10, 7:58 PM CSTTornado Warning Tornado observedSGFChristian, Douglas, Ozark, Taney47 min
Dec 10, 8:04 PM CSTTornado Warning EmergencyTornado observedCatastrophic damage threatMEGPemiscot41 min
Dec 10, 8:06 PM CSTTornado Warning Tornado observedLSXSaint Charles, Saint Louis, City of Saint Louis39 min
Dec 10, 8:10 PM CSTTornado Warning Tornado observedConsiderable damage threatPAHNew Madrid23 min
Dec 10, 8:24 PM CSTTornado WarningSGFDouglas, Texas, Wright18 min
Dec 10, 8:29 PM CSTTornado Warning Tornado observedConsiderable damage threatPAHMississippi61 min
Dec 10, 8:47 PM CSTTornado WarningLSXFranklin, Gasconade, Warren43 min
Dec 10, 9:18 PM CSTTornado WarningMEGDunklin, Pemiscot42 min
Dec 10, 9:39 PM CSTTornado WarningLSXSaint Charles, Saint Louis51 min
Dec 10, 9:52 PM CSTTornado WarningMEGPemiscot38 min
Dec 10, 10:14 PM CSTTornado WarningLSXIron, Madison, Reynolds46 min
Dec 10, 10:47 PM CSTTornado WarningPAHBollinger, Cape Girardeau, Perry21 min
Dec 15, 4:51 PM CSTTornado WarningEAXAndrew, Holt, Nodaway39 min
Dec 15, 5:03 PM CSTTornado WarningEAXAndrew, Buchanan27 min

By county

Every county with at least one alert. A county page lists each alert that covered it.

53 more counties

The busiest days

Days with the most alerts issued, by UTC date.

  1. December 11, 202130tornado warnings
  2. October 25, 202116tornado warnings
  3. October 24, 202115tornado warnings
  4. June 25, 202110tornado warnings
  5. March 15, 20217tornado warnings
  6. April 28, 20217tornado warnings
  7. March 17, 20216tornado warnings
  8. January 30, 20215tornado warnings
  9. October 11, 20215tornado warnings
  10. August 9, 20213tornado warnings
  11. March 24, 20212tornado warnings
  12. July 11, 20212tornado warnings

Nearby

Alerts in force nowTornadoes on recordThe radar archive20202022

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.