Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 59, NWS St. Louis, MO

March 15, 2012Madison County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 15, 2012, 8:10 PM CDT for Madison County, Missouri. It was in force for 29 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
Mar 15, 2012, 8:10 PM CDT (01:10 UTC)
Expired
Mar 15, 2012, 8:39 PM CDT
In force
29 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Madison County, MO

The radar

The Paducah radar (KPAH), 133 km from the middle of the area, began a volume at 01:11 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

Little Rock, AR (KLZK), launched 00:00Z, 1.2 hours before the alert went out and 297 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, Little Rock, AR at 00:00Z on 2012-03-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1331 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, Little Rock, AR at 00:00Z on 2012-03-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
1331 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1576 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
93 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.

601 
WUUS53 KLSX 160110
SVRLSX
MOC123-160200-
/O.NEW.KLSX.SV.W.0059.120316T0110Z-120316T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
810 PM CDT THU MAR 15 2012

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL MADISON COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 900 PM CDT

* AT 808 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 7 MILES NORTH OF MARQUAND...OR 9 MILES EAST OF
  FREDERICKTOWN...AND MOVING NORTHEAST AT 15 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME EASTERN MADISON COUNTY.

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 3740 9020 3758 9021 3761 9015 3755 9013
      3743 9014
TIME...MOT...LOC 0109Z 238DEG 5KT 3752 9015
WIND...HAIL <50MPH 1.00IN

$$

KANOFSKY
1 follow-up statement
543 
WWUS53 KLSX 160139
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
839 PM CDT THU MAR 15 2012

MOC123-160150-
/O.CAN.KLSX.SV.W.0059.000000T0000Z-120316T0200Z/
MADISON MO-
839 PM CDT THU MAR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MADISON COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

LAT...LON 3740 9020 3758 9021 3761 9015 3755 9013
      3743 9014
TIME...MOT...LOC 0140Z 238DEG 5KT 3754 9010

$$

KANOFSKY

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 15, 7:20 PM CDTFlash Flood WarningLSXCrawford3 hr
Mar 15, 8:36 PM CDTFlash Flood WarningLSXMadison6 hr
Mar 15, 8:56 PM CDTFlash Flood WarningLSXReynolds6 hr
Mar 15, 9:01 PM CDTSevere Thunderstorm WarningLSXCrawford, Washington44 min
Mar 15, 9:07 PM CDTSevere Thunderstorm WarningLSXCrawford, Washington38 min
Mar 15, 9:16 PM CDTSevere Thunderstorm WarningLSXCallaway, Cole, Gasconade, Montgomery, Osage44 min
Mar 15, 9:39 PM CDTSevere Thunderstorm WarningLSXSaint Charles35 min
Mar 15, 9:44 PM CDTSevere Thunderstorm WarningLSXCrawford, Washington35 min
Mar 15, 9:48 PM CDTSevere Thunderstorm WarningLSXWarren42 min
Mar 15, 9:51 PM CDTSevere Thunderstorm WarningLSXLincoln39 min
Mar 15, 9:58 PM CDTSevere Thunderstorm WarningLSXCallaway, Cole, Crawford, Franklin, Gasconade, Osage47 min
Mar 15, 10:04 PM CDTFlash Flood WarningLSXCrawford, Washington6 hr
Mar 15, 10:23 PM CDTFlash Flood WarningLSXCole, Osage6 hr
Mar 15, 10:51 PM CDTFlash Flood WarningLSXGasconade6 hr
Mar 15, 11:33 PM CDTSevere Thunderstorm WarningLSXOsage42 min
Mar 16, 12:42 AM CDTSevere Thunderstorm WarningLSXBoone20 min
Mar 16, 12:43 AM CDTSevere Thunderstorm WarningLSXCallaway47 min
Mar 16, 1:00 AM CDTSevere Thunderstorm WarningLSXGasconade32 min
Mar 16, 4:03 AM CDTAreal Flood WarningLSXOsage6 hr
Mar 16, 4:08 AM CDTAreal Flood WarningLSXCrawford6 hr
Mar 16, 3:58 PM CDTAreal Flood WarningLSXMadison4 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.