Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 65, NWS Kansas City, MO

May 28, 2012Cooper County, Pettis County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 28, 2012, 9:01 PM CDT for Cooper County, Pettis County, Missouri. It was in force for 29 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
May 28, 2012, 9:01 PM CDT (02:01 UTC)
Expired
May 28, 2012, 9:30 PM CDT
In force
29 min
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Cooper County, MO, Pettis County, MO

The radar

The Pleasant Hill radar (KEAX), 110 km from the middle of the area, began a volume at 02:04 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

TimeReportWhereRemark
May 28, 9:13 PM CDTHAIL 12 Nne Smithton, MOQUARTER SIZE HAIL REPORTED ON HIGHWAY 135.

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

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 2.0 hours before the alert went out and 220 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2012-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1923 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2012-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
1923 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1564 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
76 m²/s²
Significant tornado parameter
0.2
Supercell composite
2.4

Open this sounding in Storm Lab

The text

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

159 
WUUS53 KEAX 290201
SVREAX
MOC053-159-290230-
/O.NEW.KEAX.SV.W.0065.120529T0201Z-120529T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
901 PM CDT MON MAY 28 2012

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN COOPER COUNTY IN CENTRAL MISSOURI...
  EAST CENTRAL PETTIS COUNTY IN CENTRAL MISSOURI...

* UNTIL 930 PM CDT

* AT 855 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTH OF
  SMITHTON...AND MOVING EAST AT 15 MPH.

  HAZARD...QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS.

* LOCATIONS IMPACTED INCLUDE...
  OTTERVILLE AND CLIFTON CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3884 9291 3869 9290 3870 9317 3880 9311
TIME...MOT...LOC 0200Z 257DEG 14KT 3876 9306

HAIL...1.00IN
WIND...<50 MPH

$$

ACH
1 follow-up statement
573 
WWUS53 KEAX 290217
SVSEAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
917 PM CDT MON MAY 28 2012

MOC053-159-290230-
/O.CON.KEAX.SV.W.0065.000000T0000Z-120529T0230Z/
COOPER MO-PETTIS MO-
917 PM CDT MON MAY 28 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
PETTIS AND SOUTHWESTERN COOPER COUNTIES UNTIL 930 PM CDT...

AT 912 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR 
OTTERVILLE...AND MOVING EAST AT 15 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS.

RECENT LOCAL STORM REPORTS: AT 913 PM...TRAINED WEATHER SPOTTERS 
REPORTED QUARTER SIZE HAIL 2 MILES NORTH-NORTHEAST OF SMITHTON.

IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF WESTERN COOPER COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3884 9291 3869 9290 3870 9317 3880 9311
TIME...MOT...LOC 0216Z 257DEG 14KT 3877 9298

HAIL...1.00IN
WIND...<50 MPH

$$

ACH

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 8:28 PM CDTSpecial Weather StatementEAXCooper47 min
May 28, 8:55 PM CDTAreal Flood AdvisoryEAXCooper, Howard, Pettis4 hr
May 28, 9:28 PM CDTSevere Thunderstorm WarningEAXCooper, Pettis32 min
May 28, 9:58 PM CDTSpecial Weather StatementEAXPettis47 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2012Every 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.