Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 207, NWS St. Louis, MO

July 8, 2012Osage County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 8, 2012, 1:36 PM CDT for Osage County, Missouri. It was in force for 39 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
Jul 8, 2012, 1:36 PM CDT (18:36 UTC)
Expired
Jul 8, 2012, 2:15 PM CDT
In force
39 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), 114 km from the middle of the area, began a volume at 18:39 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
Jul 8, 1:51 PM CDTHAIL 0.7Rich Fountain, MO

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 12:00Z, 6.6 hours before the alert went out and 233 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.

401 
WUUS53 KLSX 081836
SVRLSX
MOC151-081915-
/O.NEW.KLSX.SV.W.0207.120708T1836Z-120708T1915Z/

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

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 215 PM CDT

* AT 134 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 3843 9205 3848 9179 3829 9172 3829 9202
TIME...MOT...LOC 1837Z 343DEG 4KT 3839 9191

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

$$

KANOFSKY
1 follow-up statement
890 
WWUS53 KLSX 081912
SVSLSX

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

MOC151-081922-
/O.EXP.KLSX.SV.W.0207.000000T0000Z-120708T1915Z/
OSAGE MO-
212 PM CDT SUN JUL 8 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN OSAGE COUNTY IS BEING
REISSUED...

PLEASE REFER TO THAT BULLETIN FOR THE LATEST SEVERE WEATHER 
INFORMATION.

LAT...LON 3843 9205 3848 9179 3829 9172 3829 9202
TIME...MOT...LOC 1912Z 343DEG 4KT 3835 9190

$$

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, 2:10 PM CDTSevere Thunderstorm WarningLSXOsage28 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.