Alert archive / Missouri / Tornado Warnings in 2019

Tornado Warning 24, NWS St. Louis, MO

May 22, 2019Boone County, Missouri

NWS St. Louis, MO issued this tornado warning at May 22, 2019, 9:10 PM CDT for Boone County, Missouri. It was in force for 50 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: May 22, 2019, 9:10 PM CDT (02:10 UTC)
Expired: May 22, 2019, 10:00 PM CDT
In force: 50 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Boone County, MO

The radar

The St Louis radar (KLSX), 153 km from the middle of the area, began a volume at 02:11 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
May 22, 9:30 PM CDT	TORNADO	6 Wsw Hallsville, MO	TRAINED SPOTTER WAS 8N COLUMBIA LOOKING NORTHWEST AND OBSERVED A TORNADO ON THE GROUND.
May 22, 9:33 PM CDT	TSTM WND DMG	Midway, MO	TREES DOWN ON BOOTHE LANE.

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
May 22, 4:00 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.2 hours before the alert went out and 271 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: 2061 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 1242 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 2.4
Supercell composite: 17.1

Open this sounding in Storm Lab

The text

As transmitted.

899 
WFUS53 KLSX 230210
TORLSX
MOC019-230300-
/O.NEW.KLSX.TO.W.0024.190523T0210Z-190523T0300Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service St Louis MO
910 PM CDT Wed May 22 2019

The National Weather Service in St Louis has issued a

* Tornado Warning for...
  Northern Boone County in central Missouri...

* Until 1000 PM CDT.

* At 910 PM CDT, severe thunderstorms capable of producing both
  tornadoes and extensive straight line wind damage were located near
  New Franklin, moving east at 45 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.

* These dangerous storms will be near...
  Rocheport around 915 PM CDT.
  Midway around 925 PM CDT.
  Columbia and Hallsville around 940 PM CDT.
  Murry around 945 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Harrisburg.

This also includes Finger Lakes State Park.
 
This includes Interstate 70 in Missouri between exits 115 and 128.
 
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 3915 9248 3924 9210 3897 9215 3894 9253
      3898 9257
TIME...MOT...LOC 0210Z 262DEG 41KT 3902 9267 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

CVKING

5 follow-up statements

859 
WWUS53 KLSX 230222
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
922 PM CDT Wed May 22 2019

MOC019-230300-
/O.CON.KLSX.TO.W.0024.000000T0000Z-190523T0300Z/
Boone MO-
922 PM CDT Wed May 22 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR NORTHERN
BOONE COUNTY...

At 922 PM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located near
Rocheport, moving east at 50 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.

These dangerous storms will be near...
  Midway around 925 PM CDT.
  Columbia around 940 PM CDT.
  Hallsville and Murry around 945 PM CDT.
  Centralia around 955 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Harrisburg.

This also includes Finger Lakes State Park.
 
This includes Interstate 70 in Missouri between exits 115 and 128.
 
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 3915 9248 3924 9210 3897 9215 3894 9253
      3898 9257
TIME...MOT...LOC 0222Z 256DEG 41KT 3907 9255 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

CVKING

822 
WWUS53 KLSX 230231
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
931 PM CDT Wed May 22 2019

MOC019-230300-
/O.CON.KLSX.TO.W.0024.000000T0000Z-190523T0300Z/
Boone MO-
931 PM CDT Wed May 22 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR NORTHERN
BOONE COUNTY...
    
At 931 PM CDT, a confirmed tornado was located 7 miles north of
Midway, moving east at 45 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado.

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...
  Columbia around 940 PM CDT.
  Hallsville and Murry around 945 PM CDT.
  Centralia around 955 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Harrisburg.

This also includes Finger Lakes State Park.
 
This includes Interstate 70 in Missouri between exits 115 and 128.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 3915 9248 3924 9210 3897 9215 3894 9253
      3898 9257
TIME...MOT...LOC 0231Z 262DEG 41KT 3909 9241 

TORNADO...OBSERVED
HAIL...1.00IN

$$

CVKING

466 
WWUS53 KLSX 230234
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
934 PM CDT Wed May 22 2019

MOC019-230300-
/O.CON.KLSX.TO.W.0024.000000T0000Z-190523T0300Z/
Boone MO-
934 PM CDT Wed May 22 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
NORTHEASTERN BOONE COUNTY...
    
At 934 PM CDT, a confirmed tornado was located 7 miles west of
Hallsville, moving east at 50 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed a tornado north of 
         Columbia moving toward Hallsville.

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...
  Hallsville around 940 PM CDT.
  Murry around 945 PM CDT.
  Centralia around 950 PM CDT.

This also includes Finger Lakes State Park.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 3901 9214 3899 9246 3909 9243 3917 9241
      3924 9210
TIME...MOT...LOC 0234Z 262DEG 45KT 3909 9235 

TORNADO...OBSERVED
HAIL...1.00IN

$$

CVKING

233 
WWUS53 KLSX 230244
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
944 PM CDT Wed May 22 2019

MOC019-230300-
/O.CON.KLSX.TO.W.0024.000000T0000Z-190523T0300Z/
Boone MO-
944 PM CDT Wed May 22 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1000 PM CDT FOR
NORTHEASTERN BOONE COUNTY...
    
At 943 PM CDT, a confirmed tornado was located near Hallsville, 
moving east at 45 mph.

HAZARD...Damaging tornado and quarter size hail.

SOURCE...Weather spotters confirmed tornado east of Hallsville.

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...
  Centralia around 950 PM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

&&

LAT...LON 3901 9214 3901 9230 3910 9229 3920 9227
      3924 9210
TIME...MOT...LOC 0243Z 262DEG 41KT 3911 9221 

TORNADO...OBSERVED
HAIL...1.00IN

$$

CVKING

084 
WWUS53 KLSX 230252
SVSLSX

Severe Weather Statement
National Weather Service St Louis MO
952 PM CDT Wed May 22 2019

MOC019-230301-
/O.EXP.KLSX.TO.W.0024.000000T0000Z-190523T0300Z/
Boone MO-
952 PM CDT Wed May 22 2019

...THE TORNADO WARNING FOR NORTHEASTERN BOONE COUNTY WILL EXPIRE AT
1000 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Tornado Watch remains in effect until 1100 PM CDT for central
Missouri.

LAT...LON 3901 9214 3901 9230 3910 9229 3920 9227
      3924 9210
TIME...MOT...LOC 0251Z 262DEG 41KT 3912 9211 

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 7:45 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis, Marion, Shelby	45 min
May 22, 7:54 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	36 min
May 22, 8:14 PM CDT	Tornado Warning Tornado observed	LSX	Lewis	16 min
May 22, 8:23 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion	52 min
May 22, 8:30 PM CDT	Tornado Warning	LSX	Lewis, Marion	30 min
May 22, 8:32 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe	73 min
May 22, 8:55 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone	50 min
May 22, 9:01 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	29 min
May 22, 9:18 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Cole, Moniteau	57 min
May 22, 9:20 PM CDT	Severe Thunderstorm Warning	LSX	Pike, Ralls	48 min
May 22, 9:37 PM CDT	Tornado Warning Tornado observed	LSX	Audrain, Callaway, Montgomery	53 min
May 22, 10:12 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Monroe, Pike, Ralls	63 min
May 22, 10:14 PM CDT	Flash Flood Warning	LSX	Monroe, Ralls	6 hr
May 22, 10:17 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery, Pike	43 min
May 22, 10:22 PM CDT	Tornado Warning	LSX	Pike, Ralls	27 min
May 22, 10:51 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Moniteau	54 min
May 22, 10:55 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Lincoln, Montgomery, Pike, Warren	50 min
May 22, 11:08 PM CDT	Tornado Warning Tornado observed	LSX	Cole	52 min
May 22, 11:36 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Warren	39 min
May 22, 11:43 PM CDT	Tornado Warning EmergencyTornado observedCatastrophic damage threat	LSX	Callaway, Cole, Osage	47 min
May 22, 11:55 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Saint Charles	35 min
May 23, 12:10 AM CDT	Tornado Warning	LSX	Callaway, Osage	35 min
May 23, 12:32 AM CDT	Severe Thunderstorm Warning	LSX	Gasconade, Montgomery, Warren	58 min
May 23, 12:52 AM CDT	Tornado Warning	LSX	Montgomery, Warren	38 min
May 23, 1:14 AM CDT	Tornado Warning	LSX	Lincoln, Saint Charles, Warren	33 min
May 23, 1:39 AM CDT	Tornado Warning	LSX	Saint Charles	33 min
May 23, 2:07 AM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	38 min
May 23, 2:54 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, City of Saint Louis	51 min
May 23, 3:41 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis, City of Saint Louis	49 min
May 23, 4:37 AM CDT	Areal Flood Warning	LSX	Jefferson, Saint Louis, City of Saint Louis	3 hr
May 23, 9:48 AM CDT	River Flood Warning	LSX	Lincoln	30 hr

Nearby

Tornado Warnings in Missouri, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.