Alert archive / Missouri / Tornado Warnings in 2023

Tornado Warning 9, NWS St. Louis, MO

March 31, 2023Crawford County, Franklin County, Washington County, Missouri

NWS St. Louis, MO issued this tornado warning at Mar 31, 2023, 5:18 PM CDT for Crawford County, Franklin County, Washington County, Missouri. It was in force for 27 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: Mar 31, 2023, 5:18 PM CDT (22:18 UTC)
Expired: Mar 31, 2023, 5:45 PM CDT
In force: 27 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Crawford County, MO, Franklin County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 53 km from the middle of the area, began a volume at 22:18 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.

Issued	Product	Office	Lasted
Mar 31, 12:28 PM CDT	Tornado Watch PDS	SPC	11 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 10.3 hours before the alert went out and 292 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1009 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 646 m²/s²
0-3 km storm-relative helicity: 712 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

096 
WFUS53 KLSX 312218
TORLSX
MOC055-071-221-312300-
/O.NEW.KLSX.TO.W.0009.230331T2218Z-230331T2300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
518 PM CDT Fri Mar 31 2023

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northeastern Crawford County in east central Missouri...
  Northwestern Washington County in east central Missouri...
  Southeastern Franklin County in east central Missouri...

* Until 600 PM CDT.
    
* At 518 PM CDT, a severe thunderstorm capable of producing a tornado
  was located over Bourbon, moving northeast at 40 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 dangerous storm will be near...
  Miramiguoa Park around 530 PM CDT.

Other locations in the path of this tornadic thunderstorm include St.
Clair, Parkway and Lonedell.

This also includes Robertsville State Park and Meramec State Park.
 
This includes Interstate 44 in Missouri between exits 225 and 242,
and near exit 257.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid 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 3813 9118 3827 9121 3850 9074 3842 9074
      3821 9078
TIME...MOT...LOC 2218Z 239DEG 36KT 3817 9122 

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

$$

Glass

2 follow-up statements

439 
WWUS53 KLSX 312232
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
532 PM CDT Fri Mar 31 2023

MOC055-221-312242-
/O.CAN.KLSX.TO.W.0009.000000T0000Z-230331T2300Z/
Crawford MO-Washington MO-
532 PM CDT Fri Mar 31 2023

...THE TORNADO WARNING FOR NORTHEASTERN CRAWFORD AND NORTHWESTERN
WASHINGTON COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has moved out 
of the warned area. Therefore, the warning has been cancelled.

A Tornado Watch remains in effect until 800 PM CDT for east central
Missouri.

LAT...LON 3821 9102 3836 9102 3850 9074 3842 9074
      3824 9077
TIME...MOT...LOC 2232Z 239DEG 36KT 3824 9106 

$$

MOC071-312300-
/O.CON.KLSX.TO.W.0009.000000T0000Z-230331T2300Z/
Franklin MO-
532 PM CDT Fri Mar 31 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 600 PM CDT FOR
SOUTHEASTERN FRANKLIN COUNTY...
    
At 532 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Miramiguoa Park, moving northeast at 40 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...
  St. Clair, Parkway, Lonedell and Pacific.

This also includes Robertsville State Park.
 
This includes Interstate 44 in Missouri between exits 239 and 242,
and near exit 257.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid 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 3821 9102 3836 9102 3850 9074 3842 9074
      3824 9077
TIME...MOT...LOC 2232Z 239DEG 36KT 3824 9106 

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

$$

Glass

898 
WWUS53 KLSX 312245
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
545 PM CDT Fri Mar 31 2023

MOC071-312254-
/O.CAN.KLSX.TO.W.0009.000000T0000Z-230331T2300Z/
Franklin MO-
545 PM CDT Fri Mar 31 2023

...THE TORNADO WARNING FOR SOUTHEASTERN FRANKLIN COUNTY IS
CANCELLED...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.

A Tornado Watch remains in effect until 800 PM CDT for east central
Missouri.

LAT...LON 3821 9102 3836 9102 3850 9074 3842 9074
      3824 9077
TIME...MOT...LOC 2243Z 239DEG 36KT 3831 9092 

$$

Glass

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 12:40 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Ralls	50 min
Mar 31, 1:19 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Crawford, Iron, Washington	27 min
Mar 31, 1:37 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	8 min
Mar 31, 2:44 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Monroe	46 min
Mar 31, 3:19 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Ralls	41 min
Mar 31, 3:29 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway	46 min
Mar 31, 3:49 PM CDT	Severe Thunderstorm Warning	LSX	Marion, Ralls	41 min
Mar 31, 3:56 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway, Monroe, Pike, Ralls	49 min
Mar 31, 3:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	LSX	Audrain, Montgomery, Pike	48 min
Mar 31, 4:02 PM CDT	Tornado Warning	LSX	Marion, Ralls	43 min
Mar 31, 4:27 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	33 min
Mar 31, 4:40 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	50 min
Mar 31, 4:41 PM CDT	Severe Thunderstorm Warning	LSX	Pike	34 min
Mar 31, 4:55 PM CDT	Tornado Warning	LSX	Crawford, Franklin, Gasconade	26 min
Mar 31, 5:05 PM CDT	Tornado Warning	LSX	Lincoln, Pike	40 min
Mar 31, 5:09 PM CDT	Severe Thunderstorm Warning	LSX	Pike	51 min
Mar 31, 5:10 PM CDT	Tornado Warning	LSX	Crawford, Washington	19 min
Mar 31, 5:31 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Washington	25 min
Mar 31, 5:40 PM CDT	High Wind Warning	LSX	Audrain, Boone, Callaway, Knox, Lewis, Marion and 4 more	3 hr
Mar 31, 6:24 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois	23 min

Nearby

Tornado Warnings in Missouri, 2023 Every tornado warning in 2023 Tornadoes in 2023

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.