Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 234, NWS St. Louis, MO

August 8, 2012Cole County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Aug 8, 2012, 7:26 PM CDT for Cole County, Missouri. It was in force for 34 min. 6 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
Aug 8, 2012, 7:26 PM CDT (00:26 UTC)
Expired
Aug 8, 2012, 8:00 PM CDT
In force
34 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Cole County, MO

The radar

The St Louis radar (KLSX), 135 km from the middle of the area, began a volume at 00:27 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
Aug 8, 7:27 PM CDTHAIL 1.751 S Lohman, MORELAYED BY JEFFERSON CITY POLICE DEPARTMENT
Aug 8, 7:30 PM CDTHAIL 0.53 Ese Jefferson City, MOPEA TO MARBLE SIZED HAIL
Aug 8, 7:38 PM CDTHAIL 0.71 W Jefferson City, MO
Aug 8, 7:42 PM CDTHAIL 0.25Jefferson City, MOOBSERVED ON THE WEST SIDE OF JEFFERSON CITY
Aug 8, 7:55 PM CDTHAIL 0.7Jefferson City, MO
Aug 8, 8:01 PM CDTHAIL 0.88Jefferson City, MODIME AND NICKEL SIZE HAIL ALONG WITH ESTIMATED 50MPH WINDS ON THE EAST SIDE OF TOWN

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, 0.4 hours before the alert went out and 234 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 2012-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -111 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2423 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
-111 m²/s²
0-3 km storm-relative helicity
76 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.

232 
WUUS53 KLSX 090026
SVRLSX
MOC051-090100-
/O.NEW.KLSX.SV.W.0234.120809T0026Z-120809T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
726 PM CDT WED AUG 8 2012

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  COLE COUNTY IN CENTRAL MISSOURI...

* UNTIL 800 PM CDT

* AT 722 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  RUSSELLVILLE...AND MOVING NORTHEAST AT 25 MPH.

  HAZARD...QUARTER SIZE HAIL AND 60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...MINOR DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE
           DAMAGE...WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.

* LOCATIONS IMPACTED INCLUDE...
  JEFFERSON CITY...CENTERTOWN...ST. MARTINS...WARDSVILLE...ELSTON...
  MARION AND OSAGE CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3870 9238 3868 9235 3867 9232 3864 9225
      3864 9222 3862 9220 3861 9220 3857 9213
      3856 9210 3857 9201 3855 9203 3854 9203
      3839 9238 3850 9247
TIME...MOT...LOC 0026Z 237DEG 22KT 3851 9234

HAIL...1.00IN
WIND...60 MPH

$$

CARNEY
1 follow-up statement
513 
WWUS53 KLSX 090029
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
729 PM CDT WED AUG 8 2012

MOC051-090100-
/O.CON.KLSX.SV.W.0234.000000T0000Z-120809T0100Z/
COLE MO-
729 PM CDT WED AUG 8 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR COLE COUNTY
UNTIL 800 PM CDT...

AT 727 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR BRAZITO...AND
MOVING NORTHEAST AT 25 MPH.

HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...LAW ENFORCEMENT.

IMPACT...DAMAGE TO VEHICLES...ROOFS AND WINDOWS. MINOR TREE DAMAGE...
         WITH LIMBS UP TO ONE INCH IN DIAMETER BROKEN.

LOCATIONS IMPACTED INCLUDE...
JEFFERSON CITY...ST. MARTINS...WARDSVILLE...ELSTON...MARION AND OSAGE
CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM IS PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 3870 9238 3868 9235 3867 9232 3864 9225
      3864 9222 3862 9220 3861 9220 3857 9213
      3856 9210 3857 9201 3855 9203 3854 9203
      3839 9238 3850 9247
TIME...MOT...LOC 0029Z 235DEG 23KT 3852 9232

HAIL...1.75IN
WIND...60 MPH

$$

CARNEY

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 8, 7:47 PM CDTSevere Thunderstorm WarningLSXCallaway, Cole, Osage33 min
Aug 8, 9:31 PM CDTSevere Thunderstorm WarningLSXSaint Charles, Warren44 min
Aug 8, 10:51 PM CDTAreal Flood AdvisoryLSXSaint Charles4 hr

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.