Alert archive / Missouri / Tornado Warnings in 2018

Tornado Warning 11, NWS Kansas City, MO

June 26, 2018Jackson County, Missouri

NWS Kansas City, MO issued this tornado warning at Jun 26, 2018, 1:11 PM CDT for Jackson County, Missouri. It was in force for 19 min. 4 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
Jun 26, 2018, 1:11 PM CDT (18:11 UTC)
Expired
Jun 26, 2018, 1:30 PM CDT
In force
19 min
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

County Jackson County, MO

The radar

The Pleasant Hill radar (KEAX), 16 km from the middle of the area, began a volume at 18:15 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

TimeReportWhereRemark
Jun 26, 1:12 PM CDTTSTM WND DMG1 E Lee'S Summit, MONUMEROUS TREE LIMBS DOWN UP TO 12 INCHES IN DIAMETER. REPORTED AT HIGHWAY 291 AND INDEPENDENCE AVENUE IN LEES SUMMIT MO.
Jun 26, 1:12 PM CDTTSTM WND DMG2 E Unity Village, MOSEVERAL TREE LIMBS DOWN UP TO 12 INCHES IN DIAMETER. REPORTED AT HIGHWAY 291 AND INDEPENDENCE AVENUE IN LEES SUMMIT MO.
Jun 26, 1:15 PM CDTTORNADO1 Nw Lake Lotawana, MOLEES SUMMIT FD CHIEF REPORTS SIGNIFICANT ROOF DAMAGE TO SEVERAL HOMES IN G AN F BLOCKS AROUND LAKE LOTAWANA... ALONG WITH NUMEROUS REPORTS OF TREE DAMAGE. THIS DAMAGE IS DUE TO A POSSIBLE TORNADO.
Jun 26, 1:18 PM CDTTSTM WND DMG2 Nw Lake Lotawana, MOREPORTED AT COBERN ROAD WEST OF HIGHWAY 7 LAKE LOTAWANA.

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.

IssuedProductOfficeLasted
Jun 26, 12:35 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 6.2 hours before the alert went out and 118 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, Topeka, KS at 12:00Z on 2018-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 634 joules per kilogram.LCLLFCEL10008507005003002001001 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, Topeka, KS at 12:00Z on 2018-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 291 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
634 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
831 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
291 m²/s²
0-3 km storm-relative helicity
375 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

As transmitted.

709 
WFUS53 KEAX 261811
TOREAX
MOC095-261830-
/O.NEW.KEAX.TO.W.0011.180626T1811Z-180626T1830Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Kansas City/Pleasant Hill MO
111 PM CDT TUE JUN 26 2018

The National Weather Service in Pleasant Hill has issued a

* Tornado Warning for...
  Southeastern Jackson County in west central Missouri...

* Until 130 PM CDT.
    
* At 111 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Lake Lotawana, 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...
  Lee's Summit, Blue Springs, Grain Valley, Oak Grove, Lake Lotawana
  and Tarsney Lakes.

This includes Interstate 470 between mile markers 10 and 13.
 
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 3893 9438 3899 9437 3901 9412 3890 9412
TIME...MOT...LOC 1811Z 273DEG 40KT 3895 9429 

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

$$

Blair

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 25, 8:14 PM CDTSpecial Weather StatementEAXAtchison31 min
Jun 25, 9:24 PM CDTRiver Flood WarningEAXPlatte71 hr
Jun 26, 5:57 AM CDTSpecial Weather StatementEAXClinton, Platte48 min
Jun 26, 6:57 AM CDTSpecial Weather StatementEAXHenry33 min
Jun 26, 7:04 AM CDTSevere Thunderstorm WarningEAXHenry, Johnson26 min
Jun 26, 7:14 AM CDTSpecial Weather StatementEAXCass31 min
Jun 26, 7:45 AM CDTSevere Thunderstorm WarningEAXJohnson45 min
Jun 26, 8:27 AM CDTSpecial Weather StatementEAXPettis48 min
Jun 26, 9:11 AM CDTSpecial Weather StatementEAXPettis49 min
Jun 26, 9:25 AM CDTAreal Flood AdvisoryEAXPettis3 hr
Jun 26, 10:22 AM CDTRiver Flood WarningEAXClay, Jackson, Ray48 hr
Jun 26, 10:22 AM CDTRiver Flood WarningEAXJackson, Lafayette, Ray12 days
Jun 26, 10:22 AM CDTRiver Flood WarningEAXCarroll, Lafayette, Saline12 days
Jun 26, 10:22 AM CDTRiver Flood WarningEAXCarroll, Chariton, Saline13 days
Jun 26, 12:47 PM CDTSpecial Weather StatementEAXPettis28 min
Jun 26, 12:54 PM CDTSevere Thunderstorm WarningEAXJohnson, Lafayette, Pettis, Saline36 min
Jun 26, 1:01 PM CDTSevere Thunderstorm WarningEAXCass, Jackson44 min
Jun 26, 1:22 PM CDTSevere Thunderstorm WarningEAXJohnson, Lafayette68 min
Jun 26, 1:27 PM CDTSevere Thunderstorm WarningEAXCooper, Howard, Pettis, Saline48 min
Jun 26, 1:50 PM CDTSevere Thunderstorm WarningEAXPettis, Saline40 min
Jun 26, 2:14 PM CDTSevere Thunderstorm WarningEAXCooper, Howard, Saline46 min
Jun 26, 2:15 PM CDTFlash Flood WarningEAXJohnson, Pettis3 hr
Jun 26, 2:22 PM CDTSpecial Weather StatementEAXCass38 min
Jun 26, 3:44 PM CDTHeat AdvisoryEAXBates, Carroll, Cass, Clay, Cooper, Henry and 8 more22 hr
Jun 26, 3:44 PM CDTHeat AdvisoryEAXAdair, Andrew, Atchison, Bates, Buchanan, Caldwell and 31 more4 days
Jun 26, 4:23 PM CDTSpecial Weather StatementEAXBates37 min
Jun 26, 5:03 PM CDTSpecial Weather StatementEAXHenry27 min

Nearby

Tornado Warnings in Missouri, 2018Every tornado warning in 2018Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.