Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 7, NWS Kansas City, MO

February 28, 20125 counties in Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Feb 28, 2012, 11:02 PM CST for 5 counties in Missouri. It was in force for 28 min. 1 report 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, 11:02 PM CST (05:02 UTC)
Expired: Feb 28, 2012, 11:30 PM CST
In force: 28 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Caldwell County, MO, Carroll County, MO, Chariton County, MO, Linn County, MO, Livingston County, MO

The radar

The Pleasant Hill radar (KEAX), 110 km from the middle of the area, began a volume at 05:01 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, 11:13 PM CST	TSTM WND GST 60	Chillicothe, MO	SMALL HAIL

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, 5.0 hours before the alert went out and 189 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.

867 
WUUS53 KEAX 290502
SVREAX
MOC025-033-041-115-117-290530-
/O.NEW.KEAX.SV.W.0007.120229T0502Z-120229T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1102 PM CST TUE FEB 28 2012

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CALDWELL COUNTY IN NORTH CENTRAL MISSOURI...
  NORTHERN CARROLL COUNTY IN NORTH CENTRAL MISSOURI...
  NORTHWESTERN CHARITON COUNTY IN NORTH CENTRAL MISSOURI...
  WESTERN LINN COUNTY IN NORTH CENTRAL MISSOURI...
  LIVINGSTON COUNTY IN NORTH CENTRAL MISSOURI...

* UNTIL 1130 PM CST

* AT 1057 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN
  EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR BRAYMER...OR 15
  MILES SOUTHEAST OF HAMILTON...AND MOVING EAST AT 60 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CHILLICOTHE...UTICA...HALE...WHEELING...MEADVILLE...MOORESVILLE...
  DAWN...TINA...AVALON AND SUMNER.

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 3953 9323 3952 9376 3953 9376 3953 9393
      3976 9388 3979 9378 3979 9376 3996 9322
TIME...MOT...LOC 0502Z 251DEG 51KT 3964 9369
WIND...HAIL 70MPH <.75IN

$$

CUTTER

2 follow-up statements

551 
WWUS53 KEAX 290519
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1119 PM CST TUE FEB 28 2012

MOC025-033-041-290528-
/O.CAN.KEAX.SV.W.0007.000000T0000Z-120229T0530Z/
CALDWELL MO-CARROLL MO-CHARITON MO-
1119 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN CHARITON...
NORTHERN CARROLL AND EASTERN CALDWELL COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS THE WARNED 
AREA.

LAT...LON 3996 9322 3970 9323 3970 9326 3969 9328
      3964 9327 3961 9369 3982 9365
TIME...MOT...LOC 0518Z 251DEG 51KT 3971 9341

$$

MOC115-117-290530-
/O.CON.KEAX.SV.W.0007.000000T0000Z-120229T0530Z/
LINN MO-LIVINGSTON MO-
1119 PM CST TUE FEB 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR LIVINGSTON AND
WESTERN LINN COUNTIES IN NORTH CENTRAL MISSOURI UNTIL 1130 PM CST...

AT 1116 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS
OF 70 MPH.  THIS STORM WAS LOCATED 7 MILES SOUTHWEST OF WHEELING...OR
8 MILES SOUTHEAST OF CHILLICOTHE...MOVING EAST AT 60 MPH.

IN ADDITION...AT 1113 PM A 60 MPH WIND WAS REPORTED IN CHILLICOTHE 
WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  WHEELING AND MEADVILLE.

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 3996 9322 3970 9323 3970 9326 3969 9328
      3964 9327 3961 9369 3982 9365
TIME...MOT...LOC 0518Z 251DEG 51KT 3971 9341
WIND...HAIL 70MPH <.75IN

$$

CUTTER

582 
WWUS53 KEAX 290532
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1132 PM CST TUE FEB 28 2012

MOC115-117-290542-
/O.EXP.KEAX.SV.W.0007.000000T0000Z-120229T0530Z/
LINN MO-LIVINGSTON MO-
1132 PM CST TUE FEB 28 2012

...THE SEVERE THUNDERSTORM WARNING FOR LIVINGSTON AND WESTERN LINN
COUNTIES IN NORTH CENTRAL MISSOURI HAS EXPIRED...

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN PLEASANT HILL.

LAT...LON 3996 9322 3970 9323 3970 9326 3969 9328
      3964 9327 3961 9369 3982 9365
TIME...MOT...LOC 0519Z 251DEG 51KT 3971 9339

$$

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	Platte	31 min
Feb 28, 9:47 PM CST	Severe Thunderstorm Warning	EAX	Buchanan, Clay, Clinton, Platte	28 min
Feb 28, 10:16 PM CST	Severe Thunderstorm Warning	EAX	Clay, Jackson, Platte	29 min
Feb 28, 10:30 PM CST	Severe Thunderstorm Warning	EAX	Clay, Jackson, Platte	30 min
Feb 28, 10:34 PM CST	Special Weather Statement	EAX	Cass	26 min
Feb 28, 10:37 PM CST	Special Weather Statement	EAX	Bates	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, 11:04 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 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.