Alert archive / Missouri / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 2, NWS Kansas City, MO

February 27, 2011Cass County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Feb 27, 2011, 3:51 PM CST for Cass County, Missouri. It was in force for 39 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 27, 2011, 3:51 PM CST (21:51 UTC)
Expired: Feb 27, 2011, 4:30 PM CST
In force: 39 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

County Cass County, MO

The radar

The Pleasant Hill radar (KEAX), 22 km from the middle of the area, began a volume at 21:51 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
Feb 27, 4:01 PM CST	HAIL 1	3 W Freeman, MO
Feb 27, 4:06 PM CST	HAIL 1.25	3 N Harrisonville, MO
Feb 27, 4:14 PM CST	HAIL 0.88	Peculiar, MO
Feb 27, 4:18 PM CST	HAIL 0.88	Pleasant Hill, MO
Feb 27, 4:18 PM CST	HAIL 1	Pleasant Hill, 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 27, 1:12 PM CST	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 9.9 hours before the alert went out and 124 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 382 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 505 m²/s²
0-3 km storm-relative helicity: 498 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.

635 
WUUS53 KEAX 272151
SVREAX
MOC037-272230-
/O.NEW.KEAX.SV.W.0002.110227T2151Z-110227T2230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
351 PM CST SUN FEB 27 2011

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CASS COUNTY IN WEST CENTRAL MISSOURI...

* UNTIL 430 PM CST

* AT 346 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH...AND GOLF BALL SIZE HAIL.  THIS STORM WAS LOCATED 7
  MILES SOUTHEAST OF PAOLA...AND MOVING EAST AT 70 MPH. THIS STORM HAS 
  HAD A HISTORY OF PRODUCING GOLFBALL SIZE HAIL.

* LOCATIONS IMPACTED INCLUDE...
  PECULIAR...HARRISONVILLE...GARDEN CITY...PLEASANT HILL...DREXEL...
  CLEVELAND...FREEMAN...ARCHIE...EAST LYNNE...WEST LINE...GUNN CITY
  AND STRASBURG.

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.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3847 9462 3873 9461 3883 9416 3883 9413
      3866 9413 3865 9412 3857 9412 3856 9411
      3849 9410 3847 9454
TIME...MOT...LOC 2150Z 248DEG 63KT 3855 9467
WIND...HAIL 60MPH 1.75IN

$$

CDB

3 follow-up statements

059 
WWUS53 KEAX 272204
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
404 PM CST SUN FEB 27 2011

MOC037-272230-
/O.CON.KEAX.SV.W.0002.000000T0000Z-110227T2230Z/
CASS MO-
404 PM CST SUN FEB 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CASS COUNTY
UNTIL 430 PM CST...

AT 359 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
FREEMAN...OR 7 MILES SOUTHWEST OF PECULIAR...MOVING NORTHEAST AT 75
MPH.

LOCATIONS IMPACTED INCLUDE...
  HARRISONVILLE...PLEASANT HILL...EAST LYNNE...GUNN CITY AND
  STRASBURG.

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.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 3854 9461 3873 9461 3883 9416 3883 9413
      3866 9413 3865 9412 3857 9412
TIME...MOT...LOC 2204Z 246DEG 67KT 3867 9442
WIND...HAIL 60MPH 1.00IN

$$

CDB

588 
WWUS53 KEAX 272214
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
414 PM CST SUN FEB 27 2011

MOC037-272230-
/O.CON.KEAX.SV.W.0002.000000T0000Z-110227T2230Z/
CASS MO-
414 PM CST SUN FEB 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN CASS
COUNTY UNTIL 430 PM CST...

AT 412 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 PLEASANT
HILL...MOVING NORTHEAST AT 70 MPH.

LOCATIONS IMPACTED INCLUDE...
  PLEASANT HILL...GUNN CITY AND STRASBURG.

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 3863 9413 3860 9451 3873 9461 3883 9416
      3883 9413
TIME...MOT...LOC 2213Z 242DEG 62KT 3875 9428
WIND...HAIL 60MPH 1.00IN

$$

CDB

700 
WWUS53 KEAX 272222
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
422 PM CST SUN FEB 27 2011

MOC037-272232-
/O.EXP.KEAX.SV.W.0002.000000T0000Z-110227T2230Z/
CASS MO-
422 PM CST SUN FEB 27 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN CASS COUNTY WILL
EXPIRE AT 430 PM CST...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER SMALL HAIL AND HEAVY RAIN IS STILL POSSIBLE WITH THIS 
THUNDERSTORM.

IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM CST.

LAT...LON 3863 9413 3860 9451 3873 9461 3883 9416
      3883 9413
TIME...MOT...LOC 2222Z 242DEG 62KT 3882 9410

$$

CDB

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 26, 9:15 PM CST	Dense Fog Advisory	EAX	Bates, Caldwell, Carroll, Cass, Chariton, Clay and 15 more	20 hr
Feb 27, 10:08 AM CST	Flood Watch	EAX	Adair, Bates, Buchanan, Caldwell, Carroll, Cass and 21 more	13 hr
Feb 27, 3:12 PM CST	River Flood Warning	EAX	Cooper	28 hr
Feb 27, 4:20 PM CST	Areal Flood Advisory	EAX	Bates, Cass, Clay, Jackson, Platte	7 hr
Feb 27, 4:21 PM CST	Special Weather Statement	EAX	Johnson	39 min
Feb 27, 4:43 PM CST	Areal Flood Advisory	EAX	Caldwell, Carroll, Daviess, Jackson, Johnson, Lafayette and 5 more	6 hr
Feb 27, 4:50 PM CST	Severe Thunderstorm Warning	EAX	Johnson, Lafayette, Pettis, Saline	25 min
Feb 27, 4:54 PM CST	Special Weather Statement	EAX	Cass, Jackson, Johnson, Lafayette	51 min
Feb 27, 5:07 PM CST	Areal Flood Advisory	EAX	Chariton, Cooper, Howard, Linn, Macon, Randolph and 1 more	6 hr
Feb 27, 5:21 PM CST	Special Weather Statement	EAX	Saline	24 min
Feb 27, 5:37 PM CST	Special Weather Statement	EAX	Randolph	23 min
Feb 27, 5:40 PM CST	Special Weather Statement	EAX	Randolph	50 min
Feb 27, 5:43 PM CST	River Flood Warning	EAX	Cass, Henry, Johnson	45 hr
Feb 27, 5:43 PM CST	River Flood Warning	EAX	Johnson, Pettis	39 hr
Feb 27, 5:43 PM CST	River Flood Warning	EAX	Bates, Cass, Henry	45 hr
Feb 27, 5:57 PM CST	Severe Thunderstorm Warning	EAX	Randolph	18 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2011 Every severe thunderstorm warning in 2011

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.