Alert archive / Missouri / Tornado Warnings in 2026

Tornado Warning 42, NWS St. Louis, MO

April 27, 20264 counties in Missouri

NWS St. Louis, MO issued this tornado warning at Apr 27, 2026, 4:29 PM CDT for 4 counties in Missouri. It was in force for 46 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 27, 2026, 4:29 PM CDT (21:29 UTC)
Expired: Apr 27, 2026, 5:15 PM CDT
In force: 46 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Boone County, MO, Callaway County, MO, Cole County, MO, Moniteau County, MO

The radar

The St Louis radar (KLSX), 142 km from the middle of the area, began a volume at 21:31 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.

What was reported inside it

Time	Report	Where	Remark
Apr 27, 4:46 PM CDT	HAIL 0.7	California, MO
Apr 27, 5:14 PM CDT	HAIL 1.75	New Bloomfield, MO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 27, 12:50 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.5 hours before the alert went out and 226 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1944 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 564 m²/s²
0-3 km storm-relative helicity: 669 m²/s²
Significant tornado parameter: 4.7
Supercell composite: 19.0

Open this sounding in Storm Lab

The text

As transmitted.

351 
WFUS53 KLSX 272129
TORLSX
MOC019-027-051-135-272215-
/O.NEW.KLSX.TO.W.0042.260427T2129Z-260427T2215Z/

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

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Southeastern Boone County in central Missouri...
  Southwestern Callaway County in central Missouri...
  Cole County in central Missouri...
  Moniteau County in central Missouri...

* Until 515 PM CDT.

* At 429 PM CDT, a severe thunderstorm capable of producing a tornado
  was located 10 miles south of Tipton, moving east at 65 mph.

  HAZARD...Tornado and golf ball 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.

* This tornado will be near...
  Tipton around 435 PM CDT.
  High Point and Clarksburg around 440 PM CDT.
  California around 445 PM CDT.

Other locations impacted by the tornado include Latham, Lohman,
Elston, Hartsburg, Marion, Wainwright, Guthrie and Osage City.

This includes the following State Parks...
Clarks Hill/Norton Historic Site and Jefferson Landing Historic Site.

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 3865 9284 3868 9270 3868 9262 3870 9261
      3884 9207 3858 9199 3857 9201 3856 9200
      3855 9203 3850 9201 3848 9202 3847 9204
      3846 9211 3847 9215 3847 9217 3844 9216
      3843 9215 3842 9240 3843 9262 3860 9284
TIME...MOT...LOC 2128Z 256DEG 55KT 3851 9284

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.75 IN

$$

Jaja

3 follow-up statements

266 
WWUS53 KLSX 272136
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
436 PM CDT Mon Apr 27 2026

MOC019-027-051-135-272215-
/O.CON.KLSX.TO.W.0042.000000T0000Z-260427T2215Z/
Boone MO-Callaway MO-Cole MO-Moniteau MO-
436 PM CDT Mon Apr 27 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR
SOUTHEASTERN BOONE, SOUTHWESTERN CALLAWAY, COLE AND MONITEAU
COUNTIES...

At 436 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles northwest of High Point, or 9 miles southwest of
California, moving east at 65 mph.

HAZARD...Tornado and tennis ball 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.

This tornado will be near...
  High Point and Clarksburg around 440 PM CDT.
  California around 445 PM CDT.
  Centertown, McGirk and Russellville around 450 PM CDT.

Other locations impacted by the tornado include Latham, Lohman,
Elston, Hartsburg, Marion, Wainwright, Guthrie and Osage City.

This includes the following State Parks...
Clarks Hill/Norton Historic Site and Jefferson Landing Historic Site.

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 3865 9284 3868 9270 3868 9262 3870 9261
      3884 9207 3858 9199 3857 9201 3856 9200
      3855 9203 3850 9201 3848 9202 3847 9204
      3846 9211 3847 9215 3847 9217 3844 9216
      3843 9215 3842 9240 3843 9262 3860 9284
TIME...MOT...LOC 2129Z 256DEG 55KT 3852 9282

TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.50 IN

$$

Jaja

910 
WWUS53 KLSX 272159 RRA
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
459 PM CDT Mon Apr 27 2026

MOC135-272209-
/O.CAN.KLSX.TO.W.0042.000000T0000Z-260427T2215Z/
Moniteau MO-
459 PM CDT Mon Apr 27 2026

...TORNADO WARNING IS CANCELLED FOR MONITEAU COUNTY...

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

A Tornado Watch remains in effect until 900 PM CDT for a portion of
central Missouri.

&&

LAT...LON 3854 9237 3868 9239 3879 9205 3858 9199
      3857 9201 3856 9200 3856 9202 3855 9203
TIME...MOT...LOC 2136Z 256DEG 55KT 3854 9268

$$


MOC019-027-051-272215-
/O.CON.KLSX.TO.W.0042.000000T0000Z-260427T2215Z/
Boone MO-Callaway MO-Cole MO-
459 PM CDT Mon Apr 27 2026

...TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM CDT FOR SOUTH
CENTRAL BOONE, SOUTHWESTERN CALLAWAY AND NORTHEASTERN COLE
COUNTIES...

At 459 PM CDT, a severe thunderstorm capable of producing a tornado
was located near St. Martins, or 6 miles northwest of Jefferson City,
moving east at 60 mph.

HAZARD...Tornado and tennis ball 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.

This tornado will be near...
  Jefferson City and St. Martins around 500 PM CDT.
  Lake Mykee Town, Lake Mykee, Holts Summit and New Bloomfield around
  510 PM CDT.

Other locations impacted by the tornado include Elston, Hartsburg,
Guthrie and Wainwright.

This includes the following State Parks...
Clarks Hill/Norton Historic Site and Jefferson Landing Historic Site.

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 3854 9237 3868 9239 3879 9205 3858 9199
      3857 9201 3856 9200 3856 9202 3855 9203
TIME...MOT...LOC 2136Z 255DEG 52KT 3855 9270

TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.50 IN

$$

Kimble

229 
WWUS53 KLSX 272210
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
510 PM CDT Mon Apr 27 2026

MOC019-027-051-272220-
/O.EXP.KLSX.TO.W.0042.000000T0000Z-260427T2215Z/
Boone MO-Callaway MO-Cole MO-
510 PM CDT Mon Apr 27 2026

...TORNADO WARNING WILL EXPIRE AT 515 PM CDT FOR SOUTH CENTRAL BOONE,
SOUTHWESTERN CALLAWAY AND NORTHEASTERN COLE COUNTIES...

The tornado threat has diminished and the Tornado Warning has been
cancelled. However, large hail and damaging winds remain likely and a
Severe Thunderstorm Warning remains in effect for the area.

A Tornado Watch remains in effect until 900 PM CDT for a portion of
central Missouri.

&&

LAT...LON 3854 9237 3868 9239 3879 9205 3858 9199
      3857 9201 3856 9200 3856 9202 3855 9203
TIME...MOT...LOC 2159Z 255DEG 52KT 3864 9228

$$

Jaja

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 8:43 PM CDT	Tornado Warning	LSX	Boone, Callaway, Cole, Moniteau	30 min
Apr 26, 10:08 PM CDT	Tornado Warning	LSX	Osage	13 min
Apr 27, 1:06 AM CDT	Severe Thunderstorm Warning	LSX	Crawford	39 min
Apr 27, 2:10 AM CDT	Areal Flood Advisory	LSX	Crawford	3 hr
Apr 27, 2:44 AM CDT	Severe Thunderstorm Warning	LSX	Washington	31 min
Apr 27, 3:08 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Sainte Genevieve, Saint Francois, Washington	52 min
Apr 27, 3:36 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	39 min
Apr 27, 3:41 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Warren	49 min
Apr 27, 4:02 AM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	24 min
Apr 27, 6:52 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Knox, Shelby	38 min
Apr 27, 7:35 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Monroe, Shelby	55 min
Apr 27, 7:54 AM CDT	Tornado Warning	LSX	Monroe, Ralls	51 min
Apr 27, 8:10 AM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Audrain, Lincoln, Marion, Pike, Ralls	65 min
Apr 27, 8:24 AM CDT	Tornado Warning	LSX	Pike, Ralls	51 min
Apr 27, 10:09 AM CDT	River Flood Warning	LSX	Osage	24 hr
Apr 27, 10:41 AM CDT	Flash Flood Warning	LSX	Boone, Cole, Moniteau	3 hr
Apr 27, 11:18 AM CDT	Flood Watch	LSX	Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 10 more	10 hr
Apr 27, 11:48 AM CDT	Flash Flood Warning	LSX	Audrain, Boone, Callaway, Cole, Moniteau, Montgomery and 1 more	3 hr
Apr 27, 12:09 PM CDT	Areal Flood Advisory	LSX	Lincoln, Pike, Warren	3 hr
Apr 27, 12:27 PM CDT	Tornado Warning	LSX	Saint Charles, Saint Louis, City of Saint Louis	48 min
Apr 27, 1:25 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis	37 min
Apr 27, 1:51 PM CDT	Areal Flood Advisory	LSX	Montgomery, Warren	3 hr
Apr 27, 1:55 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	45 min
Apr 27, 2:01 PM CDT	Tornado Warning	LSX	City of Saint Louis	27 min
Apr 27, 2:05 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike, Warren	40 min
Apr 27, 2:13 PM CDT	Areal Flood Advisory	LSX	Saint Louis, City of Saint Louis	3 hr
Apr 27, 2:39 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles, Warren	51 min
Apr 27, 2:42 PM CDT	River Flood Warning	LSX	Monroe	20 hr
Apr 27, 2:49 PM CDT	Tornado Warning	LSX	Saint Charles, Warren	41 min
Apr 27, 2:54 PM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	6 days
Apr 27, 2:57 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Moniteau	48 min
Apr 27, 3:05 PM CDT	River Flood Warning	LSX	Perry, Sainte Genevieve	8 days
Apr 27, 3:14 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	46 min
Apr 27, 3:19 PM CDT	Tornado Warning	LSX	Saint Charles, Saint Louis	41 min
Apr 27, 3:25 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway	42 min
Apr 27, 3:37 PM CDT	Flash Flood Warning	LSX	Boone	5 hr
Apr 27, 3:39 PM CDT	River Flood Warning	LSX	Lewis	11 hr
Apr 27, 3:41 PM CDT	River Flood Warning	LSX	Lincoln	24 hr
Apr 27, 3:41 PM CDT	Tornado Warning	LSX	Audrain, Callaway	49 min
Apr 27, 3:43 PM CDT	Severe Thunderstorm Warning	LSX	Boone	62 min
Apr 27, 3:46 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Pike, Ralls	44 min
Apr 27, 3:46 PM CDT	Tornado Warning	LSX	Boone	14 min
Apr 27, 3:53 PM CDT	River Flood Warning	LSX	Lincoln	4 days
Apr 27, 3:59 PM CDT	River Flood Warning	LSX	Crawford, Washington	18 hr
Apr 27, 4:00 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway, Moniteau	60 min
Apr 27, 4:07 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Pike, Ralls	53 min
Apr 27, 4:09 PM CDT	Tornado Warning	LSX	Audrain, Montgomery, Pike, Ralls	51 min
Apr 27, 4:13 PM CDT	Flash Flood Warning	LSX	Audrain	5 hr
Apr 27, 4:34 PM CDT	Tornado Warning	LSX	Marion	29 min
Apr 27, 4:35 PM CDT	Flash Flood Warning	LSX	Monroe	5 hr
Apr 27, 4:46 PM CDT	Tornado Warning	LSX	Pike	44 min
Apr 27, 4:52 PM CDT	Flash Flood Warning	LSX	Marion, Ralls	4 hr
Apr 27, 4:54 PM CDT	Tornado Warning	LSX	Audrain, Pike	21 min
Apr 27, 4:57 PM CDT	River Flood Warning	LSX	Callaway, Osage	4 days
Apr 27, 4:57 PM CDT	River Flood Warning	LSX	Gasconade, Montgomery	3 days
Apr 27, 4:57 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	63 min
Apr 27, 5:00 PM CDT	Tornado Warning	LSX	Pike	30 min
Apr 27, 5:04 PM CDT	River Flood Warning	LSX	Marion	22 hr
Apr 27, 5:09 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	19 min
Apr 27, 5:14 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Cole, Osage	61 min
Apr 27, 5:20 PM CDT	Flash Flood Warning	LSX	Pike, Ralls	3 hr
Apr 27, 5:21 PM CDT	Severe Thunderstorm Warning	LSX	Pike	39 min
Apr 27, 5:32 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	43 min
Apr 27, 5:47 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	58 min
Apr 27, 5:55 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Warren	50 min
Apr 27, 5:57 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Washington	48 min
Apr 27, 5:59 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles	46 min
Apr 27, 6:09 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Warren	36 min
Apr 27, 6:26 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Franklin, Jefferson	64 min
Apr 27, 6:28 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	47 min
Apr 27, 6:31 PM CDT	Tornado Warning	LSX	Franklin, Jefferson, Washington	59 min
Apr 27, 6:40 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis	48 min
Apr 27, 6:41 PM CDT	Tornado Warning	LSX	Saint Charles, Saint Louis	32 min
Apr 27, 6:45 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	45 min

Nearby

Tornado Warnings in Missouri, 2026 Every tornado warning in 2026 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.