Alert archive / Kansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 2, NWS Kansas City, MO

February 28, 2012Johnson County, Leavenworth County, Wyandotte County, Kansas; Platte County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Feb 28, 2012, 9:44 PM CST for Johnson County, Leavenworth County, Wyandotte County, Kansas; Platte County, Missouri. It was in force for 31 min. 5 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, 9:44 PM CST (03:44 UTC)
Expired: Feb 28, 2012, 10:15 PM CST
In force: 31 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Johnson County, KS, Leavenworth County, KS, Wyandotte County, KS, Platte County, MO

The radar

The Pleasant Hill radar (KEAX), 70 km from the middle of the area, began a volume at 03:43 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, 9:57 PM CST	TSTM WND DMG	Tonganoxie, KS	SEVERAL LARGE TREES 3 FEET IN DIAMETER BLOWN DOWN. REPORTED BOTH SOUTH AND NORTHWEST OF TOWN.
Feb 28, 9:57 PM CST	TSTM WND GST 60	Tonganoxie, KS	ESTIMATED 50 TO 55 MPH WITH GUSTS TO 60
Feb 28, 10:21 PM CST	TSTM WND DMG	Linwood, KS	METAL ROOFING OF AN APARTMENT ROLLED UP.
Feb 28, 10:24 PM CST	TSTM WND DMG	2 W Bonner Springs, KS	SEVERAL SHINGLES REMOVED FROM A HOUSE.
Feb 28, 10:24 PM CST	TSTM WND GST 60	Linwood, KS	PEA SIZED HAIL AND HEAVY RAIN ALSO REPORTED

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 3.7 hours before the alert went out and 55 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.

079 
WUUS53 KEAX 290344
SVREAX
KSC091-103-209-MOC165-290415-
/O.NEW.KEAX.SV.W.0002.120229T0344Z-120229T0415Z/

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

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN JOHNSON COUNTY IN EAST CENTRAL KANSAS...
  LEAVENWORTH COUNTY IN NORTHEAST KANSAS...
  WYANDOTTE COUNTY IN NORTHEAST KANSAS...
  SOUTHERN PLATTE COUNTY IN WEST CENTRAL MISSOURI...

* UNTIL 1015 PM CST

* AT 938 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 5 MILES SOUTHWEST OF MCLOUTH TO LONE STAR...AND MOVING EAST AT
  55 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  TONGANOXIE...BASEHOR...DE SOTO...LANSING...LEAVENWORTH...BONNER
  SPRINGS...EDWARDSVILLE...SHAWNEE...LAKE QUIVIRA...WEATHERBY LAKE...
  PARKVILLE...MERRIAM...RIVERSIDE...MISSION...KANSAS CITY KANSAS...
  FAIRWAY...WESTWOOD...OVERLAND PARK...PRAIRIE VILLAGE AND MISSION
  HILLS.

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 3927 9518 3936 9460 3896 9461 3895 9506
      3898 9506 3898 9508 3896 9507 3895 9508
      3898 9518
TIME...MOT...LOC 0343Z 253DEG 49KT 3915 9517 3892 9524
WIND...HAIL 60MPH 0.88IN

$$

CUTTER

2 follow-up statements

520 
WWUS53 KEAX 290400
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1000 PM CST TUE FEB 28 2012

KSC091-103-209-MOC165-290415-
/O.CON.KEAX.SV.W.0002.000000T0000Z-120229T0415Z/
LEAVENWORTH KS-JOHNSON KS-WYANDOTTE KS-PLATTE MO-
1000 PM CST TUE FEB 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
JOHNSON COUNTY IN EAST CENTRAL KANSAS...AND WYANDOTTE AND LEAVENWORTH
COUNTIES IN NORTHEAST KANSAS...AND SOUTHERN PLATTE COUNTY IN WEST
CENTRAL MISSOURI UNTIL 1015 PM CST...

AT 958 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM LANSING TO DE SOTO...MOVING EAST AT 55 MPH. NICKEL SIZE HAIL MAY
ALSO ACCOMPANY THESE DAMAGING WINDS.

IN ADDITION...AT 955 PM A 60 MPH WIND WAS REPORTED IN TONGANOXIE 
WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
  BONNER SPRINGS...SHAWNEE...EDWARDSVILLE...LAKE QUIVIRA...WEATHERBY
  LAKE...MERRIAM...OVERLAND PARK...PARKVILLE...RIVERSIDE...KANSAS
  CITY KANSAS...MISSION...WESTWOOD...FAIRWAY...MISSION HILLS...
  PRAIRIE VILLAGE...LEAWOOD...FERRELVIEW...LAKE WAUKOMIS...PLATTE
  WOODS AND HOUSTON LAKE.

THIS WILL IMPACT THE FOLLOWING INTERSTATES...

  I-70 IN KANSAS BETWEEN MILE MARKERS 410 AND 423.
  I-35 IN KANSAS BETWEEN MILE MARKERS 224 AND 235.
  I-635 BETWEEN MILE MARKERS 0 AND 12.
  I-435 LOOP FROM MILE MARKERS 2 TO 39.
  I-29 BETWEEN MILE MARKERS 3 AND 15.

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 3927 9518 3936 9460 3896 9461 3895 9506
      3898 9506 3898 9508 3896 9507 3895 9508
      3898 9518
TIME...MOT...LOC 0359Z 253DEG 49KT 3926 9488 3903 9495
WIND...HAIL 60MPH 0.88IN

$$

CUTTER

750 
WWUS53 KEAX 290419
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1019 PM CST TUE FEB 28 2012

KSC091-103-209-MOC165-290428-
/O.EXP.KEAX.SV.W.0002.000000T0000Z-120229T0415Z/
LEAVENWORTH KS-JOHNSON KS-WYANDOTTE KS-PLATTE MO-
1019 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN JOHNSON COUNTY IN
EAST CENTRAL KANSAS...AND WYANDOTTE AND LEAVENWORTH COUNTIES IN
NORTHEAST KANSAS...AND SOUTHERN PLATTE COUNTY IN WEST CENTRAL
MISSOURI IS BEING REISSUED...

PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER
INFORMATION.

REMEMBER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH 
CENTRAL JOHNSON COUNTY IN EAST CENTRAL KANSAS...WYANDOTTE COUNTY... 
CLAY COUNTY...NORTHWESTERN JACKSON COUNTY...SOUTHEASTERN PLATTE 
COUNTY UNTIL 1045 PM.

LAT...LON 3927 9518 3936 9460 3896 9461 3895 9506
      3898 9506 3898 9508 3896 9507 3895 9508
      3898 9518
TIME...MOT...LOC 0400Z 253DEG 49KT 3926 9486 3903 9493

$$

CUTTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 28, 9:47 PM CST	Severe Thunderstorm Warning	EAX	Leavenworth	28 min
Feb 28, 10:16 PM CST	Severe Thunderstorm Warning	EAX	Johnson, Wyandotte	29 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 Kansas, 2012 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.