Alert archive / Kansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 5, NWS Kansas City, MO

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

NWS Kansas City, MO issued this severe thunderstorm warning at Feb 28, 2012, 10:30 PM CST for Johnson County, Leavenworth County, Wyandotte County, Kansas; Clay County, Jackson County, Platte County, Missouri. It was in force for 30 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: Feb 28, 2012, 10:30 PM CST (04:30 UTC)
Expired: Feb 28, 2012, 11:00 PM CST
In force: 30 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

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

The radar

The Pleasant Hill radar (KEAX), 49 km from the middle of the area, began a volume at 04:32 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, 10:32 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, 4.5 hours before the alert went out and 82 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.

352 
WUUS53 KEAX 290430
SVREAX
KSC091-103-209-MOC047-095-165-290500-
/O.NEW.KEAX.SV.W.0005.120229T0430Z-120229T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1030 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...
  SOUTH CENTRAL LEAVENWORTH COUNTY IN NORTHEAST KANSAS...
  WYANDOTTE COUNTY IN NORTHEAST KANSAS...
  SOUTHWESTERN CLAY COUNTY IN WEST CENTRAL MISSOURI...
  WEST CENTRAL JACKSON COUNTY IN WEST CENTRAL MISSOURI...
  SOUTHEASTERN PLATTE COUNTY IN WEST CENTRAL MISSOURI...

* UNTIL 1100 PM CST

* AT 1027 PM CST...EMERGENCY MANAGEMENT REPORTED A SEVERE            
  THUNDERSTORM PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH IN       
  LINWOOD KANSAS. THIS STORM WAS LOCATED NEAR DE SOTO...AND          
  MOVING NORTHEAST AT 60 MPH. PENNY SIZE HAIL MAY ALSO               
  ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  BONNER SPRINGS...SHAWNEE...EDWARDSVILLE...LENEXA...LAKE QUIVIRA...
  OVERLAND PARK...MERRIAM...PRAIRIE VILLAGE...LEAWOOD...MISSION...
  FAIRWAY...MISSION HILLS...WESTWOOD...PARKVILLE...KANSAS CITY
  KANSAS...KANSAS CITY...RIVERSIDE...NORTH KANSAS CITY...GLADSTONE
  AND CLAYCOMO.

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 3934 9446 3895 9447 3880 9505 3904 9505
TIME...MOT...LOC 0428Z 242DEG 64KT 3898 9487
WIND...HAIL 60MPH 0.75IN

$$

CUTTER

3 follow-up statements

499 
WWUS53 KEAX 290440
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1040 PM CST TUE FEB 28 2012

KSC103-290450-
/O.CAN.KEAX.SV.W.0005.000000T0000Z-120229T0500Z/
LEAVENWORTH KS-
1040 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL LEAVENWORTH
COUNTY IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 3899 9491 3911 9491 3934 9446 3895 9447
      3880 9505
TIME...MOT...LOC 0440Z 242DEG 64KT 3908 9463

$$

KSC091-209-MOC047-095-165-290500-
/O.CON.KEAX.SV.W.0005.000000T0000Z-120229T0500Z/
JOHNSON KS-WYANDOTTE KS-CLAY MO-JACKSON MO-PLATTE MO-
1040 PM CST TUE FEB 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
JOHNSON COUNTY IN EAST CENTRAL KANSAS...AND WYANDOTTE COUNTY IN
NORTHEAST KANSAS...AND SOUTHEASTERN PLATTE...WEST CENTRAL JACKSON AND
SOUTHWESTERN CLAY COUNTIES IN WEST CENTRAL MISSOURI UNTIL 1100 PM
CST...

AT 1037 PM CST...EMERGENCY MANAGEMENT REPORTED A SEVERE THUNDERSTORM
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED
NEAR MERRIAM...MOVING NORTHEAST AT 75 MPH. PENNY SIZE HAIL MAY ALSO
ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  KANSAS CITY...RIVERSIDE...NORTH KANSAS CITY...GLADSTONE...
  CLAYCOMO...KANSAS CITY DOWNTOWN...PLATTE WOODS...HOUSTON LAKE...
  LAKE WAUKOMIS...NORTHMOOR...AVONDALE...OAKVIEW...PLEASANT VALLEY...
  OAKS...OAKWOOD...OAKWOOD PARK AND RANDOLPH.

THIS WILL IMPACT THE FOLLOWING INTERSTATES...

  I-70 IN MISSOURI BETWEEN MILE MARKERS 0 AND 9.
  I-70 IN KANSAS BETWEEN MILE MARKERS 410 AND 423.
  I-35 IN MISSOURI BETWEEN MILE MARKERS 0 AND 15.
  I-35 IN KANSAS BETWEEN MILE MARKERS 216 AND 235.
  I-635 BETWEEN MILE MARKERS 0 AND 12.
  I-435 LOOP FROM MILE MARKERS 0 TO 15...44 TO 83.
  I-29 BETWEEN MILE MARKERS 0 AND 7.

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 3899 9491 3911 9491 3934 9446 3895 9447
      3880 9505
TIME...MOT...LOC 0440Z 242DEG 64KT 3908 9463
WIND...HAIL 60MPH 0.75IN

$$

CUTTER

270 
WWUS53 KEAX 290449
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1049 PM CST TUE FEB 28 2012

KSC091-209-MOC047-095-165-290500-
/O.CON.KEAX.SV.W.0005.000000T0000Z-120229T0500Z/
JOHNSON KS-WYANDOTTE KS-CLAY MO-JACKSON MO-PLATTE MO-
1049 PM CST TUE FEB 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
JOHNSON COUNTY IN EAST CENTRAL KANSAS...AND EASTERN WYANDOTTE COUNTY
IN NORTHEAST KANSAS...AND SOUTHEASTERN PLATTE...WEST CENTRAL JACKSON
AND SOUTHWESTERN CLAY COUNTIES IN WEST CENTRAL MISSOURI UNTIL 1100 PM
CST...

AT 1042 PM CST...EMERGENCY MANAGEMENT REPORTED A SEVERE THUNDERSTORM
PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 75 MPH.  THIS STORM WAS
LOCATED NEAR KANSAS CITY...MOVING NORTHEAST AT 75 MPH. PENNY SIZE
HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

IN ADDITION...AT 1045 PM 70 MPH WIND WAS REPORTED IN CLAY COUNTY 
WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  PLEASANT VALLEY.

THIS WILL IMPACT THE FOLLOWING INTERSTATES...

  I-70 IN MISSOURI BETWEEN MILE MARKERS 0 AND 9.
  I-70 IN KANSAS BETWEEN MILE MARKERS 413 AND 423.
  I-35 IN MISSOURI BETWEEN MILE MARKERS 0 AND 15.
  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 11...44 TO 70.
  I-29 BETWEEN MILE MARKERS 0 AND 7.

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 3895 9483 3905 9482 3917 9477 3934 9446
      3895 9447
TIME...MOT...LOC 0448Z 242DEG 64KT 3915 9447
WIND...HAIL 70MPH 0.75IN

$$

CUTTER

963 
WWUS53 KEAX 290459
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1059 PM CST TUE FEB 28 2012

KSC091-209-MOC047-095-165-290509-
/O.EXP.KEAX.SV.W.0005.000000T0000Z-120229T0500Z/
JOHNSON KS-WYANDOTTE KS-CLAY MO-JACKSON MO-PLATTE MO-
1059 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN JOHNSON COUNTY IN
EAST CENTRAL KANSAS...AND EASTERN WYANDOTTE COUNTY IN NORTHEAST
KANSAS...AND SOUTHEASTERN PLATTE...WEST CENTRAL JACKSON AND
SOUTHWESTERN CLAY COUNTIES IN WEST CENTRAL MISSOURI WILL EXPIRE AT
1100 PM CST...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 3 AM. 

LAT...LON 3895 9483 3905 9482 3917 9477 3934 9446
      3895 9447
TIME...MOT...LOC 0459Z 242DEG 64KT 3924 9425

$$

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, 10:16 PM CST	Severe Thunderstorm Warning	EAX	Johnson, Wyandotte	29 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.