Alert archive / Missouri / Tornado Warnings in 2026

Tornado Warning 45, NWS St. Louis, MO

April 27, 2026Audrain County, Pike County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 27, 2026, 4:54 PM CDT for Audrain County, Pike County, Missouri. It was in force for 21 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Apr 27, 2026, 4:54 PM CDT (21:54 UTC)
Expired
Apr 27, 2026, 5:15 PM CDT
In force
21 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
1.0 in

Counties Audrain County, MO, Pike County, MO

The radar

The St Louis radar (KLSX), 86 km from the middle of the area, began a volume at 21:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 27, 12:50 PM CDTTornado WatchSPC9 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 258 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 12:00Z on 2026-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2026-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 104 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1053 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
104 m²/s²
0-3 km storm-relative helicity
306 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

598 
WFUS53 KLSX 272154
TORLSX
MOC007-163-272215-
/O.NEW.KLSX.TO.W.0045.260427T2154Z-260427T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
454 PM CDT Mon Apr 27 2026

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  East Central Audrain County in central Missouri...
  Southwestern Pike County in northeastern Missouri...

* Until 515 PM CDT.

* At 454 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 5 miles south of Vandalia, moving east at 60 mph.

  HAZARD...Tornado and quarter size hail.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without
           shelter. Mobile homes will be damaged or destroyed. Damage
           to roofs, windows and vehicles will occur. Tree damage is
           likely.

* Locations impacted include...
  Vandalia, New Hartford, Curryville, Ashley and St. Clement.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to an interior room on the lowest floor of a well-built building
away from windows. If you are outdoors, in a mobile home, or in a
vehicle, move to the closest substantial shelter and protect yourself
from flying debris.

&&

LAT...LON 3915 9156 3926 9159 3932 9150 3932 9144
      3936 9144 3944 9132 3923 9117 3923 9118
      3916 9118 3914 9119
TIME...MOT...LOC 2154Z 252DEG 51KT 3923 9151

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Jaja

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 26, 8:43 PM CDTTornado WarningLSXBoone, Callaway, Cole, Moniteau30 min
Apr 26, 10:08 PM CDTTornado WarningLSXOsage13 min
Apr 27, 1:06 AM CDTSevere Thunderstorm WarningLSXCrawford39 min
Apr 27, 2:10 AM CDTAreal Flood AdvisoryLSXCrawford3 hr
Apr 27, 2:44 AM CDTSevere Thunderstorm WarningLSXWashington31 min
Apr 27, 3:08 AM CDTSevere Thunderstorm Warning Considerable damage threatLSXSainte Genevieve, Saint Francois, Washington52 min
Apr 27, 3:36 AM CDTSevere Thunderstorm WarningLSXSainte Genevieve, Saint Francois39 min
Apr 27, 3:41 AM CDTSevere Thunderstorm WarningLSXFranklin, Gasconade, Warren49 min
Apr 27, 4:02 AM CDTSevere Thunderstorm WarningLSXSainte Genevieve24 min
Apr 27, 6:52 AM CDTSevere Thunderstorm Warning Considerable damage threatLSXKnox, Shelby38 min
Apr 27, 7:35 AM CDTSevere Thunderstorm WarningLSXAudrain, Boone, Monroe, Shelby55 min
Apr 27, 7:54 AM CDTTornado WarningLSXMonroe, Ralls51 min
Apr 27, 8:10 AM CDTSevere Thunderstorm Warning Considerable damage threatLSXAudrain, Lincoln, Marion, Pike, Ralls65 min
Apr 27, 8:24 AM CDTTornado WarningLSXPike, Ralls51 min
Apr 27, 10:09 AM CDTRiver Flood WarningLSXOsage24 hr
Apr 27, 10:41 AM CDTFlash Flood WarningLSXBoone, Cole, Moniteau3 hr
Apr 27, 11:18 AM CDTFlood WatchLSXAudrain, Boone, Callaway, Cole, Franklin, Gasconade and 10 more10 hr
Apr 27, 11:48 AM CDTFlash Flood WarningLSXAudrain, Boone, Callaway, Cole, Moniteau, Montgomery and 1 more3 hr
Apr 27, 12:09 PM CDTAreal Flood AdvisoryLSXLincoln, Pike, Warren3 hr
Apr 27, 12:27 PM CDTTornado WarningLSXSaint Charles, Saint Louis, City of Saint Louis48 min
Apr 27, 1:25 PM CDTSevere Thunderstorm WarningLSXFranklin, Saint Charles, Saint Louis37 min
Apr 27, 1:51 PM CDTAreal Flood AdvisoryLSXMontgomery, Warren3 hr
Apr 27, 1:55 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis45 min
Apr 27, 2:01 PM CDTTornado WarningLSXCity of Saint Louis27 min
Apr 27, 2:05 PM CDTSevere Thunderstorm WarningLSXLincoln, Montgomery, Pike, Warren40 min
Apr 27, 2:13 PM CDTAreal Flood AdvisoryLSXSaint Louis, City of Saint Louis3 hr
Apr 27, 2:39 PM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles, Warren51 min
Apr 27, 2:42 PM CDTRiver Flood WarningLSXMonroe20 hr
Apr 27, 2:49 PM CDTTornado WarningLSXSaint Charles, Warren41 min
Apr 27, 2:54 PM CDTRiver Flood WarningLSXJefferson, Saint Louis6 days
Apr 27, 2:57 PM CDTSevere Thunderstorm WarningLSXBoone, Moniteau48 min
Apr 27, 3:05 PM CDTRiver Flood WarningLSXPerry, Sainte Genevieve8 days
Apr 27, 3:14 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis46 min
Apr 27, 3:19 PM CDTTornado WarningLSXSaint Charles, Saint Louis41 min
Apr 27, 3:25 PM CDTSevere Thunderstorm WarningLSXAudrain, Callaway42 min
Apr 27, 3:37 PM CDTFlash Flood WarningLSXBoone5 hr
Apr 27, 3:39 PM CDTRiver Flood WarningLSXLewis11 hr
Apr 27, 3:41 PM CDTRiver Flood WarningLSXLincoln24 hr
Apr 27, 3:41 PM CDTTornado WarningLSXAudrain, Callaway49 min
Apr 27, 3:43 PM CDTSevere Thunderstorm WarningLSXBoone62 min
Apr 27, 3:46 PM CDTSevere Thunderstorm WarningLSXMarion, Pike, Ralls44 min
Apr 27, 3:46 PM CDTTornado WarningLSXBoone14 min
Apr 27, 3:53 PM CDTRiver Flood WarningLSXLincoln4 days
Apr 27, 3:59 PM CDTRiver Flood WarningLSXCrawford, Washington18 hr
Apr 27, 4:00 PM CDTSevere Thunderstorm WarningLSXBoone, Callaway, Moniteau60 min
Apr 27, 4:07 PM CDTSevere Thunderstorm WarningLSXAudrain, Pike, Ralls53 min
Apr 27, 4:09 PM CDTTornado WarningLSXAudrain, Montgomery, Pike, Ralls51 min
Apr 27, 4:13 PM CDTFlash Flood WarningLSXAudrain5 hr
Apr 27, 4:29 PM CDTTornado WarningLSXBoone, Callaway, Cole, Moniteau46 min
Apr 27, 4:34 PM CDTTornado WarningLSXMarion29 min
Apr 27, 4:35 PM CDTFlash Flood WarningLSXMonroe5 hr
Apr 27, 4:46 PM CDTTornado WarningLSXPike44 min
Apr 27, 4:52 PM CDTFlash Flood WarningLSXMarion, Ralls4 hr
Apr 27, 4:57 PM CDTRiver Flood WarningLSXCallaway, Osage4 days
Apr 27, 4:57 PM CDTRiver Flood WarningLSXGasconade, Montgomery3 days
Apr 27, 4:57 PM CDTSevere Thunderstorm WarningLSXLincoln, Montgomery, Pike63 min
Apr 27, 5:00 PM CDTTornado WarningLSXPike30 min
Apr 27, 5:04 PM CDTRiver Flood WarningLSXMarion22 hr
Apr 27, 5:09 PM CDTSevere Thunderstorm WarningLSXCallaway19 min
Apr 27, 5:14 PM CDTSevere Thunderstorm WarningLSXCallaway, Cole, Osage61 min
Apr 27, 5:20 PM CDTFlash Flood WarningLSXPike, Ralls3 hr
Apr 27, 5:21 PM CDTSevere Thunderstorm WarningLSXPike39 min
Apr 27, 5:32 PM CDTSevere Thunderstorm WarningLSXLincoln43 min
Apr 27, 5:47 PM CDTSevere Thunderstorm WarningLSXLincoln58 min
Apr 27, 5:55 PM CDTSevere Thunderstorm WarningLSXFranklin, Gasconade, Warren50 min
Apr 27, 5:57 PM CDTSevere Thunderstorm WarningLSXCrawford, Franklin, Washington48 min
Apr 27, 5:59 PM CDTSevere Thunderstorm WarningLSXLincoln, Saint Charles46 min
Apr 27, 6:09 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Warren36 min
Apr 27, 6:26 PM CDTSevere Thunderstorm Warning Considerable damage threatLSXFranklin, Jefferson64 min
Apr 27, 6:28 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Saint Louis47 min
Apr 27, 6:31 PM CDTTornado WarningLSXFranklin, Jefferson, Washington59 min
Apr 27, 6:40 PM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson, Saint Charles, Saint Louis48 min
Apr 27, 6:41 PM CDTTornado WarningLSXSaint Charles, Saint Louis32 min
Apr 27, 6:45 PM CDTSevere Thunderstorm WarningLSXCrawford45 min

Nearby

Tornado Warnings in Missouri, 2026Every tornado warning in 2026Tornadoes in 2026

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.