Alert archive / Missouri / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 62, NWS St. Louis, MO

March 15, 20125 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Mar 15, 2012, 9:16 PM CDT for 5 counties in Missouri. It was in force for 44 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
Mar 15, 2012, 9:16 PM CDT (02:16 UTC)
Expired
Mar 15, 2012, 10:00 PM CDT
In force
44 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Callaway County, MO, Cole County, MO, Gasconade County, MO, Montgomery County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 123 km from the middle of the area, began a volume at 02:17 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
Mar 15, 9:35 PM CDTHAIL 0.25Jefferson City, MO
Mar 15, 9:36 PM CDTHAIL 0.88Jefferson City, MOHAIL FROM PEA TO NICKLE.
Mar 15, 9:45 PM CDTHAIL 12 S Jefferson City, MO
Mar 15, 9:47 PM CDTHAIL 1.2510 E Jefferson City, MO
Mar 15, 9:50 PM CDTHAIL 0.881 S Jefferson City, MO
Mar 15, 9:57 PM CDTHAIL 11 S Jefferson City, 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 00:00Z, 2.3 hours before the alert went out and 236 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 2012-03-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1409 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 00:00Z on 2012-03-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
1409 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1284 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
150 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.

428 
WUUS53 KLSX 160216
SVRLSX
MOC027-051-073-139-151-160300-
/O.NEW.KLSX.SV.W.0062.120316T0216Z-120316T0300Z/

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

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN CALLAWAY COUNTY IN CENTRAL MISSOURI...
  COLE COUNTY IN CENTRAL MISSOURI...
  GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  EXTREME SOUTHERN MONTGOMERY COUNTY IN EAST CENTRAL MISSOURI...
  OSAGE COUNTY IN CENTRAL MISSOURI...

* UNTIL 1000 PM CDT

* AT 912 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
  STORM WAS LOCATED 6 MILES NORTHWEST OF LINN...AND MOVING EAST AT 15
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  LINN...OWENSVILLE...HERMANN...RICH FOUNTAIN...CHAMOIS...MOUNT
  STERLING...DRAKE...BLAND...MOKANE...FRANKENSTEIN...STEEDMAN...
  PORTLAND...MORRISON...GASCONADE...BAY...SWISS...RHINELAND...CANAAN
  AND MCKITTRICK.

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 3874 9239 3872 9234 3868 9235 3864 9225
      3864 9222 3870 9222 3875 9218 3874 9142
      3871 9142 3870 9137 3822 9149 3824 9165
      3828 9165 3829 9220 3833 9220 3832 9226
      3834 9229 3833 9240 3842 9241 3843 9249
TIME...MOT...LOC 0216Z 274DEG 12KT 3855 9189
WIND...HAIL <50MPH 1.00IN

$$

KANOFSKY
1 follow-up statement
081 
WWUS53 KLSX 160259
SVSLSX

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

MOC027-051-073-139-151-160309-
/O.EXP.KLSX.SV.W.0062.000000T0000Z-120316T0300Z/
CALLAWAY MO-COLE MO-GASCONADE MO-MONTGOMERY MO-OSAGE MO-
959 PM CDT THU MAR 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR OSAGE...EXTREME SOUTHERN
MONTGOMERY...GASCONADE...COLE AND SOUTHERN CALLAWAY COUNTIES IS BEING
REISSUED...

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

LAT...LON 3874 9239 3872 9234 3868 9235 3864 9225
      3864 9222 3870 9222 3875 9218 3874 9142
      3871 9142 3870 9137 3822 9149 3824 9165
      3828 9165 3829 9220 3833 9220 3832 9226
      3834 9229 3833 9240 3842 9241 3843 9249
TIME...MOT...LOC 0259Z 274DEG 12KT 3854 9171

$$

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, 8:10 PM CDTSevere Thunderstorm WarningLSXMadison29 min
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, 9:39 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.