Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 208, NWS St. Louis, MO

July 8, 2012Osage County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 8, 2012, 2:10 PM CDT for Osage County, Missouri. It was in force for 28 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 8, 2012, 2:10 PM CDT (19:10 UTC)
Expired
Jul 8, 2012, 2:38 PM CDT
In force
28 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Osage County, MO

The radar

The St Louis radar (KLSX), 106 km from the middle of the area, began a volume at 19:13 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.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 7.2 hours before the alert went out and 240 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 12:00Z on 2012-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 661 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2012-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.1939Sfc1 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
661 J/kg
Mixed-layer CIN
-154 J/kg
Mixed-layer LCL
1477 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
-3 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.

606 
WUUS53 KLSX 081910
SVRLSX
MOC151-082000-
/O.NEW.KLSX.SV.W.0208.120708T1910Z-120708T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
210 PM CDT SUN JUL 8 2012

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 300 PM CDT

* AT 209 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR RICH
  FOUNTAIN...AND MOVING SOUTH AT 5 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...
  FREEBURG.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3846 9194 3848 9170 3828 9167 3829 9194
TIME...MOT...LOC 1910Z 359DEG 6KT 3838 9183

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

$$

KANOFSKY
1 follow-up statement
164 
WWUS53 KLSX 081938
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
238 PM CDT SUN JUL 8 2012

MOC151-081948-
/O.CAN.KLSX.SV.W.0208.000000T0000Z-120708T2000Z/
OSAGE MO-
238 PM CDT SUN JUL 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL OSAGE COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 3846 9194 3848 9170 3828 9167 3829 9194
TIME...MOT...LOC 1938Z 359DEG 6KT 3833 9183

$$

KANOFSKY

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 7:03 PM CDTSevere Thunderstorm WarningLSXSaint Louis42 min
Jul 7, 7:06 PM CDTSevere Thunderstorm WarningLSXJefferson32 min
Jul 7, 7:10 PM CDTSevere Thunderstorm WarningLSXIron, Saint Francois, Washington39 min
Jul 7, 7:18 PM CDTSevere Thunderstorm WarningLSXJefferson, Saint Louis27 min
Jul 7, 7:58 PM CDTSevere Thunderstorm WarningLSXJefferson47 min
Jul 7, 8:49 PM CDTSevere Thunderstorm WarningLSXWashington26 min
Jul 8, 1:36 PM CDTSevere Thunderstorm WarningLSXOsage39 min
Jul 8, 3:41 PM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson, Washington49 min
Jul 8, 3:53 PM CDTSevere Thunderstorm WarningLSXFranklin37 min
Jul 8, 4:24 PM CDTSevere Thunderstorm WarningLSXFranklin19 min
Jul 8, 5:57 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis27 min
Jul 8, 6:49 PM CDTSevere Thunderstorm WarningLSXSaint Louis, City of Saint Louis41 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.