Alert archive / Missouri / Tornado Warnings in 2018

Tornado Warning 10, NWS Kansas City, MO

May 2, 20184 counties in Missouri

NWS Kansas City, MO issued this tornado warning at May 2, 2018, 10:22 PM CDT for 4 counties in Missouri. It was in force for 23 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: May 2, 2018, 10:22 PM CDT (03:22 UTC)
Expired: May 2, 2018, 10:45 PM CDT
In force: 23 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Johnson County, MO, Lafayette County, MO, Pettis County, MO, Saline County, MO

The radar

The Pleasant Hill radar (KEAX), 61 km from the middle of the area, began a volume at 03:25 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
May 2, 5:27 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 3.4 hours before the alert went out and 222 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: 1170 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1041 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 164 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.6

Open this sounding in Storm Lab

The text

As transmitted.

856 
WFUS53 KEAX 030322
TOREAX
MOC101-107-159-195-030345-
/O.NEW.KEAX.TO.W.0010.180503T0322Z-180503T0345Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Kansas City/Pleasant Hill MO
1022 PM CDT WED MAY 2 2018

The National Weather Service in Pleasant Hill has issued a

* Tornado Warning for...
  Northwestern Pettis County in central Missouri...
  Southwestern Saline County in central Missouri...
  Southeastern Lafayette County in west central Missouri...
  Northeastern Johnson County in west central Missouri...

* Until 1045 PM CDT.
    
* At 1021 PM CDT, a severe thunderstorm capable of producing a
  tornado was located 8 miles north of Warrensburg, 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.

* Locations impacted include...
  Concordia, Sweet Springs, Houstonia, Emma, Hughesville and
  Fayetteville.

This includes Interstate 70 in Missouri between mile markers 63 and
74.
 
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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3880 9378 3887 9377 3893 9378 3903 9329
      3894 9326 3882 9328
TIME...MOT...LOC 0321Z 260DEG 39KT 3888 9369 

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

$$

Kurtz

1 follow-up statement

344 
WWUS53 KEAX 030334
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
1034 PM CDT WED MAY 2 2018

MOC107-030344-
/O.CAN.KEAX.TO.W.0010.000000T0000Z-180503T0345Z/
Lafayette MO-
1034 PM CDT WED MAY 2 2018

...THE TORNADO WARNING FOR SOUTHEASTERN LAFAYETTE COUNTY 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 100 AM CDT for central and
west central Missouri.

LAT...LON 3888 9327 3883 9328 3882 9358 3893 9359
      3893 9350 3895 9349 3899 9328 3894 9326
TIME...MOT...LOC 0334Z 262DEG 39KT 3889 9351 

$$

MOC101-159-195-030345-
/O.CON.KEAX.TO.W.0010.000000T0000Z-180503T0345Z/
Pettis MO-Saline MO-Johnson MO-
1034 PM CDT WED MAY 2 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1045 PM CDT FOR
NORTHWESTERN PETTIS...SOUTHWESTERN SALINE AND NORTHEASTERN JOHNSON
COUNTIES...
    
At 1034 PM CDT, a severe thunderstorm capable of producing a tornado
was located 7 miles southwest of Sweet Springs, moving east at 45
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...
Sweet Springs, Houstonia and Hughesville. 

This includes Interstate 70 in Missouri between mile markers 70 and
73.
 
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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3888 9327 3883 9328 3882 9358 3893 9359
      3893 9350 3895 9349 3899 9328 3894 9326
TIME...MOT...LOC 0334Z 262DEG 39KT 3889 9351 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

Kurtz

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 2, 7:03 PM CDT	Tornado Warning	EAX	Atchison, Holt	16 min
May 2, 7:27 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Atchison, Buchanan, Holt, Nodaway, Platte	48 min
May 2, 7:30 PM CDT	Tornado Warning	EAX	Atchison, Nodaway	15 min
May 2, 8:04 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clinton, DeKalb, Gentry, Nodaway and 2 more	41 min
May 2, 9:06 PM CDT	Tornado Warning	EAX	Bates, Cass	24 min
May 2, 9:09 PM CDT	Tornado Warning	EAX	Cass, Jackson	36 min
May 2, 9:22 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry, Jackson, Johnson, Lafayette	38 min
May 2, 9:28 PM CDT	Tornado Warning	EAX	Jackson, Lafayette	32 min
May 2, 9:44 PM CDT	Tornado Warning	EAX	Carroll, Cass, Jackson, Johnson, Lafayette, Ray	46 min
May 2, 9:49 PM CDT	Tornado Warning	EAX	Bates, Cass, Henry, Johnson	41 min
May 2, 9:57 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Carroll, Cass, Henry, Johnson, Lafayette and 1 more	63 min
May 2, 10:39 PM CDT	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Henry, Johnson, Pettis, Saline	66 min
May 2, 10:47 PM CDT	Severe Thunderstorm Warning	EAX	Macon, Randolph	28 min
May 2, 11:07 PM CDT	Severe Thunderstorm Warning	EAX	Adair, Putnam, Schuyler, Sullivan	28 min
May 3, 4:09 PM CDT	Special Weather Statement	EAX	Atchison	21 min

Nearby

Tornado Warnings in Missouri, 2018 Every tornado warning in 2018 Tornadoes in 2018

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.