Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 41, NWS Kansas City, MO

May 6, 2012Cass County, Jackson County, Johnson County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 6, 2012, 6:02 PM CDT for Cass County, Jackson County, Johnson County, Missouri. It was in force for 28 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 6, 2012, 6:02 PM CDT (23:02 UTC)
Expired: May 6, 2012, 6:30 PM CDT
In force: 28 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Cass County, MO, Jackson County, MO, Johnson County, MO

The radar

The Pleasant Hill radar (KEAX), 9 km from the middle of the area, began a volume at 23:03 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 6, 1:42 PM CDT	Severe Thunderstorm Watch	SPC	7 hr
May 6, 3:49 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 11.0 hours before the alert went out and 130 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: 1880 J/kg
Mixed-layer CIN: -240 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 286 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

818 
WUUS53 KEAX 062302
SVREAX
MOC037-095-101-062330-
/O.NEW.KEAX.SV.W.0041.120506T2302Z-120506T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
602 PM CDT SUN MAY 6 2012

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN CASS COUNTY IN WEST CENTRAL MISSOURI...
  SOUTHEASTERN JACKSON COUNTY IN WEST CENTRAL MISSOURI...
  WEST CENTRAL JOHNSON COUNTY IN WEST CENTRAL MISSOURI...

* UNTIL 630 PM CDT

* AT 558 PM CDT...A LINE OF SEVERE THUNDERSTORMS WAS LOCATED ALONG A
  LINE EXTENDING FROM LONE JACK TO PLEASANT HILL TO EAST LYNNE...AND
  MOVING SOUTHEAST AT 15 MPH.

  HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
           DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.

* LOCATIONS IMPACTED INCLUDE...
  EAST LYNNE...KINGSVILLE...STRASBURG AND GUNN CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3884 9404 3869 9406 3859 9424 3872 9434
      3880 9425 3891 9421
TIME...MOT...LOC 2302Z 302DEG 14KT 3883 9417 3875 9419
          3871 9425

HAIL...1.00IN
WIND...60 MPH

$$

DEROCHE

1 follow-up statement

036 
WWUS53 KEAX 062326
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
626 PM CDT SUN MAY 6 2012

MOC037-095-101-062337-
/O.EXP.KEAX.SV.W.0041.000000T0000Z-120506T2330Z/
CASS MO-JACKSON MO-JOHNSON MO-
626 PM CDT SUN MAY 6 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL JOHNSON...
SOUTHEASTERN JACKSON AND NORTHEASTERN CASS COUNTIES IN WEST CENTRAL
MISSOURI WILL EXPIRE AT 630 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 11PM.

LAT...LON 3884 9404 3869 9406 3859 9424 3872 9434
      3880 9425 3891 9421
TIME...MOT...LOC 2327Z 302DEG 14KT 3878 9406 3870 9408
          3866 9414

$$

DEROCHE

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 8:34 AM CDT	Special Weather Statement	EAX	Harrison	26 min
May 6, 9:35 AM CDT	Special Weather Statement	EAX	Ray	40 min
May 6, 9:38 AM CDT	Special Weather Statement	EAX	Clay	37 min
May 6, 10:41 AM CDT	Special Weather Statement	EAX	Jackson	34 min
May 6, 11:02 AM CDT	Areal Flood Advisory	EAX	Jackson	5 hr
May 6, 12:12 PM CDT	Special Weather Statement	EAX	Jackson	33 min
May 6, 12:14 PM CDT	Special Weather Statement	EAX	Clinton	31 min
May 6, 12:28 PM CDT	Severe Thunderstorm Warning	EAX	Clinton, DeKalb	32 min
May 6, 12:59 PM CDT	Severe Thunderstorm Warning	EAX	Daviess, DeKalb	31 min
May 6, 1:24 PM CDT	Special Weather Statement	EAX	Chariton	51 min
May 6, 1:47 PM CDT	Severe Thunderstorm Warning	EAX	Chariton, Randolph	28 min
May 6, 1:57 PM CDT	Severe Thunderstorm Warning	EAX	Howard, Saline	33 min
May 6, 2:15 PM CDT	Severe Thunderstorm Warning	EAX	Randolph	30 min
May 6, 4:31 PM CDT	Severe Thunderstorm Warning	EAX	Cass	29 min
May 6, 4:46 PM CDT	Special Weather Statement	EAX	Caldwell, Clinton	44 min
May 6, 4:47 PM CDT	Severe Thunderstorm Warning	EAX	Jackson	28 min
May 6, 5:01 PM CDT	Severe Thunderstorm Warning	EAX	Cass	29 min
May 6, 5:16 PM CDT	Tornado Warning	EAX	Cass	29 min
May 6, 5:30 PM CDT	Special Weather Statement	EAX	Daviess	45 min
May 6, 5:34 PM CDT	Special Weather Statement	EAX	Cass	26 min
May 6, 5:39 PM CDT	Severe Thunderstorm Warning	EAX	Cass	36 min
May 6, 5:51 PM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	24 min
May 6, 6:15 PM CDT	Severe Thunderstorm Warning	EAX	Bates, Cass, Henry, Johnson	30 min
May 6, 6:18 PM CDT	Flash Flood Warning	EAX	Cass, Jackson	5 hr
May 6, 6:30 PM CDT	Severe Thunderstorm Warning	EAX	Cass	30 min
May 6, 6:45 PM CDT	Special Weather Statement	EAX	Gentry	45 min
May 6, 6:47 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Lafayette	28 min
May 6, 6:58 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	32 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2012 Every severe thunderstorm warning in 2012

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.