Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 4, NWS Kansas City, MO

February 28, 2012Johnson County, Wyandotte County, Kansas; Clay County, Jackson County, Platte County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Feb 28, 2012, 10:16 PM CST for Johnson County, Wyandotte County, Kansas; Clay County, Jackson County, Platte County, Missouri. It was in force for 29 min. 6 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: Feb 28, 2012, 10:16 PM CST (04:16 UTC)
Expired: Feb 28, 2012, 10:45 PM CST
In force: 29 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Johnson County, KS, Wyandotte County, KS, Clay County, MO, Jackson County, MO, Platte County, MO

The radar

The Pleasant Hill radar (KEAX), 56 km from the middle of the area, began a volume at 04:17 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
Feb 28, 10:25 PM CST	TSTM WND DMG	5 N Gladstone, MO	ROOF BLOWN OFF AND WALL PUSHED IN ON BUILDING UNDER CONSTRUCTION.
Feb 28, 10:25 PM CST	TSTM WND GST 60	4 N Gladstone, MO
Feb 28, 10:32 PM CST	HAIL 0.88	4 Ne Edwardsville, KS
Feb 28, 10:42 PM CST	TSTM WND GST 60	4 Sw Kansas City Ks, KS	DOUGLAS AVE
Feb 28, 10:43 PM CST	TSTM WND GST 60	Kansas City, MO	ESTIMATED NEAR RIVER MARKET
Feb 28, 10:46 PM CST	TSTM WND GST 70	2 Se Gladstone, MO

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
Feb 28, 10:07 PM CST	Severe Thunderstorm Watch	SPC	3 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 4.3 hours before the alert went out and 86 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: 37 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 482 m above ground
0-6 km bulk shear: 72 kt
0-1 km storm-relative helicity: 427 m²/s²
0-3 km storm-relative helicity: 451 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

388 
WUUS53 KEAX 290416
SVREAX
KSC091-209-MOC047-095-165-290445-
/O.NEW.KEAX.SV.W.0004.120229T0416Z-120229T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1016 PM CST TUE FEB 28 2012

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL JOHNSON COUNTY IN EAST CENTRAL KANSAS...
  WYANDOTTE COUNTY IN NORTHEAST KANSAS...
  CLAY COUNTY IN WEST CENTRAL MISSOURI...
  NORTHWESTERN JACKSON COUNTY IN WEST CENTRAL MISSOURI...
  SOUTHEASTERN PLATTE COUNTY IN WEST CENTRAL MISSOURI...

* UNTIL 1045 PM CST

* AT 1013 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH...AND QUARTER SIZE HAIL.  THIS STORM WAS LOCATED NEAR
  EDWARDSVILLE...AND MOVING NORTHEAST AT 65 MPH.

* LOCATIONS IMPACTED INCLUDE...
  KANSAS CITY KANSAS...PARKVILLE...WEATHERBY LAKE...KANSAS CITY...
  RIVERSIDE...NORTH KANSAS CITY...GLADSTONE...CLAYCOMO...COURTNEY...
  LIBERTY...KEARNEY...KANSAS CITY DOWNTOWN...HOUSTON LAKE...PLATTE
  WOODS...LAKE WAUKOMIS...NORTHMOOR...AVONDALE...OAKVIEW...PLEASANT
  VALLEY AND GLENAIRE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3915 9490 3920 9481 3920 9478 3921 9480
      3944 9440 3936 9424 3922 9422 3898 9480
      3912 9491
TIME...MOT...LOC 0416Z 238DEG 56KT 3912 9475
WIND...HAIL 60MPH 1.00IN

$$

CUTTER

2 follow-up statements

500 
WWUS53 KEAX 290434
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1034 PM CST TUE FEB 28 2012

KSC091-209-MOC095-290443-
/O.CAN.KEAX.SV.W.0004.000000T0000Z-120229T0445Z/
JOHNSON KS-WYANDOTTE KS-JACKSON MO-
1034 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL JOHNSON COUNTY
IN EAST CENTRAL KANSAS...AND WYANDOTTE COUNTY IN NORTHEAST KANSAS...
AND NORTHWESTERN JACKSON COUNTY IN WEST CENTRAL MISSOURI IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA. HOWEVER...A SEPERATE THUNDERSTORM WARNING REMAINS IN EFFECT 
FOR THESE COUNTIES. 

LAT...LON 3944 9440 3936 9424 3922 9422 3922 9423
      3924 9425 3924 9429 3923 9431 3919 9433
      3918 9438 3920 9439 3920 9441 3917 9440
      3915 9452 3913 9457 3927 9467
TIME...MOT...LOC 0433Z 238DEG 56KT 3926 9446

$$

MOC047-165-290445-
/O.CON.KEAX.SV.W.0004.000000T0000Z-120229T0445Z/
CLAY MO-PLATTE MO-
1034 PM CST TUE FEB 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
PLATTE AND CLAY COUNTIES UNTIL 1045 PM CST...

AT 1027 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF
60 MPH...AND QUARTER SIZE HAIL.  THIS STORM WAS LOCATED NEAR
OAKVIEW...OR NEAR GLADSTONE...MOVING NORTHEAST AT 65 MPH.

LOCATIONS IMPACTED INCLUDE...
  LIBERTY...KEARNEY...MISSOURI CITY...MOSBY AND PRATHERSVILLE.

THIS WILL IMPACT THE FOLLOWING INTERSTATES...

  I-35 BETWEEN MILE MARKERS 6 AND 29.
  I-435 LOOP FROM MILE MARKERS 40 TO 55.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 3944 9440 3936 9424 3922 9422 3922 9423
      3924 9425 3924 9429 3923 9431 3919 9433
      3918 9438 3920 9439 3920 9441 3917 9440
      3915 9452 3913 9457 3927 9467
TIME...MOT...LOC 0433Z 238DEG 56KT 3926 9446
WIND...HAIL 60MPH 1.00IN

$$

CUTTER

190 
WWUS53 KEAX 290447
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1047 PM CST TUE FEB 28 2012

MOC047-165-290454-
/O.EXP.KEAX.SV.W.0004.000000T0000Z-120229T0445Z/
CLAY MO-PLATTE MO-
1047 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PLATTE AND CLAY
COUNTIES WILL EXPIRE AT 1045 PM CST...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS OF THE 
WARNED AREA. A SEPARATE THUNDERSTORM WARNING REMAINS IN EFFECT FOR 
PLATTE AND CLAY COUNTIES. 


LAT...LON 3944 9440 3936 9424 3922 9422 3922 9423
      3924 9425 3924 9429 3923 9431 3919 9433
      3918 9438 3920 9439 3920 9441 3917 9440
      3915 9452 3913 9457 3927 9467
TIME...MOT...LOC 0444Z 238DEG 56KT 3935 9427

$$

CUTTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 9:44 PM CST	Severe Thunderstorm Warning	EAX	Johnson, Leavenworth, Wyandotte	31 min
Feb 28, 9:47 PM CST	Severe Thunderstorm Warning	EAX	Leavenworth	28 min
Feb 28, 10:30 PM CST	Severe Thunderstorm Warning	EAX	Johnson, Leavenworth, Wyandotte	30 min
Feb 28, 10:34 PM CST	Special Weather Statement	EAX	Miami	26 min
Feb 28, 10:37 PM CST	Special Weather Statement	EAX	Linn	23 min
Feb 28, 10:55 PM CST	Severe Thunderstorm Warning	EAX	Clay, Jackson, Lafayette, Ray	26 min
Feb 28, 11:02 PM CST	Special Weather Statement	EAX	Cass	28 min
Feb 28, 11:02 PM CST	Severe Thunderstorm Warning	EAX	Caldwell, Carroll, Chariton, Linn, Livingston	28 min
Feb 28, 11:04 PM CST	Special Weather Statement	EAX	Bates, Henry	26 min
Feb 28, 11:13 PM CST	Special Weather Statement	EAX	Carroll, Chariton	32 min
Feb 28, 11:31 PM CST	Severe Thunderstorm Warning	EAX	Carroll, Chariton, Linn, Macon	29 min
Feb 28, 11:35 PM CST	Special Weather Statement	EAX	Henry	25 min
Feb 29, 12:03 AM CST	Severe Thunderstorm Warning	EAX	Macon	12 min
Feb 29, 12:19 AM CST	Special Weather Statement	EAX	Macon	41 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2012 Severe Thunderstorm Warnings in Kansas, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.