Alert archive / Missouri / Tornado Warnings in 2026

Tornado Warning 30, NWS St. Louis, MO

April 27, 2026Monroe County, Ralls County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 27, 2026, 7:54 AM CDT for Monroe County, Ralls County, Missouri. It was in force for 51 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, 7:54 AM CDT (12:54 UTC)
Expired
Apr 27, 2026, 8:45 AM CDT
In force
51 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.0 in

Counties Monroe County, MO, Ralls County, MO

The radar

The St Louis radar (KLSX), 130 km from the middle of the area, began a volume at 12:56 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, 4:07 AM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 0.9 hours before the alert went out and 282 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°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.

230 
WFUS53 KLSX 271254
TORLSX
MOC137-173-271345-
/O.NEW.KLSX.TO.W.0030.260427T1254Z-260427T1345Z/

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

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Monroe County in northeastern Missouri...
  Western Ralls County in northeastern Missouri...

* Until 845 AM CDT.

* At 754 AM CDT, a severe thunderstorm capable of producing a tornado
  was located near Paris, moving east at 50 mph.

  HAZARD...Tornado.

  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...
  Holliday, Paris, Stoutsville, Florida, Indian Creek, Perry, The
  Landing, Center, Spaulding and Rensselaer.

This includes the following State Parks...
Union Covered Bridge Historic Site and Mark Twain Lake Recreational
Area.

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 3937 9217 3950 9219 3969 9153 3969 9151
      3945 9146 3937 9145
TIME...MOT...LOC 1254Z 263DEG 42KT 3944 9206

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Pfahler
4 follow-up statements
767 
WWUS53 KLSX 271305
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
805 AM CDT Mon Apr 27 2026

MOC137-173-271345-
/O.CON.KLSX.TO.W.0030.000000T0000Z-260427T1345Z/
Monroe MO-Ralls MO-
805 AM CDT Mon Apr 27 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 845 AM CDT FOR
SOUTHEASTERN MONROE AND WESTERN RALLS COUNTIES IN NORTHEASTERN
MISSOURI...

At 805 AM CDT, a severe thunderstorm capable of producing a tornado
was located 6 miles east of Paris, moving east at 50 mph.

HAZARD...Tornado.

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...
  Stoutsville, Florida, Indian Creek, Perry, The Landing, Center,
  Spaulding and Rensselaer.

This includes the following State Parks...
Mark Twain Lake Recreational Area.

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 3938 9196 3954 9200 3969 9154 3969 9151
      3945 9146 3939 9145
TIME...MOT...LOC 1254Z 263DEG 42KT 3944 9205

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Pfahler
952 
WWUS53 KLSX 271316
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
816 AM CDT Mon Apr 27 2026

MOC137-173-271345-
/O.CON.KLSX.TO.W.0030.000000T0000Z-260427T1345Z/
Monroe MO-Ralls MO-
816 AM CDT Mon Apr 27 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 845 AM CDT FOR EAST
CENTRAL MONROE AND NORTHWESTERN RALLS COUNTIES IN NORTHEASTERN
MISSOURI...

At 816 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Perry, or 10 miles northeast of Santa Fe, moving
east at 55 mph.

HAZARD...Tornado.

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...
  Perry, The Landing, Center, Spaulding and Rensselaer.

This includes the following State Parks...
Mark Twain Lake Recreational Area.

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 3941 9176 3957 9181 3969 9152 3969 9151
      3945 9146 3943 9146
TIME...MOT...LOC 1305Z 263DEG 45KT 3946 9188

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Pfahler
768 
WWUS53 KLSX 271330
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
830 AM CDT Mon Apr 27 2026

MOC137-271340-
/O.CAN.KLSX.TO.W.0030.000000T0000Z-260427T1345Z/
Monroe MO-
830 AM CDT Mon Apr 27 2026

...TORNADO WARNING IS CANCELLED FOR EAST CENTRAL MONROE COUNTY IN
NORTHEASTERN MISSOURI...

The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 AM CDT for a
portion of northeast Missouri.

&&

LAT...LON 3942 9158 3963 9162 3965 9150 3945 9146
      3943 9146
TIME...MOT...LOC 1316Z 263DEG 45KT 3947 9169

$$


MOC173-271345-
/O.CON.KLSX.TO.W.0030.000000T0000Z-260427T1345Z/
Ralls MO-
830 AM CDT Mon Apr 27 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 845 AM CDT FOR
NORTHWESTERN RALLS COUNTY...

At 830 AM CDT, a severe thunderstorm capable of producing a tornado
was located near Center, or 13 miles north of Vandalia, moving east
at 55 mph.

HAZARD...Tornado.

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...
  Center and Spaulding.

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 3942 9158 3963 9162 3965 9150 3945 9146
      3943 9146
TIME...MOT...LOC 1316Z 263DEG 45KT 3947 9169

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Pfahler
118 
WWUS53 KLSX 271337
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
837 AM CDT Mon Apr 27 2026

MOC173-271345-
/O.CON.KLSX.TO.W.0030.000000T0000Z-260427T1345Z/
Ralls MO-
837 AM CDT Mon Apr 27 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 845 AM CDT FOR CENTRAL
RALLS COUNTY...

At 837 AM CDT, a severe thunderstorm capable of producing a tornado
was located over Frankford, or 14 miles south of Hannibal, moving
east at 55 mph.

HAZARD...Tornado.

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...
  Mainly rural areas of Central Ralls County.

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 3943 9146 3965 9150 3945 9146
TIME...MOT...LOC 1330Z 263DEG 45KT 3949 9147

TORNADO...RADAR INDICATED
MAX HAIL SIZE...0.00 IN

$$

Pfahler

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, 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, 4:54 PM CDTTornado WarningLSXAudrain, Pike21 min
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.