Alert archive / Missouri / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 49, NWS St. Louis, MO

April 13, 2014Boone County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 13, 2014, 5:22 AM CDT for Boone County, Missouri. It was in force for 38 min. 2 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
Apr 13, 2014, 5:22 AM CDT (10:22 UTC)
Expired
Apr 13, 2014, 6:00 AM CDT
In force
38 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Boone County, MO

The radar

The St Louis radar (KLSX), 140 km from the middle of the area, began a volume at 10:24 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
Apr 13, 5:22 AM CDTHAIL 0.25Columbia, MOHAIL LASTED 6 MINUTES
Apr 13, 5:35 AM CDTHAIL 0.5Columbia, 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, 10.4 hours before the alert went out and 254 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 2014-04-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 840 joules per kilogram.LCLLFCEL10008507005003002001001 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 2014-04-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 191 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
840 J/kg
Mixed-layer CIN
-359 J/kg
Mixed-layer LCL
1567 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
191 m²/s²
0-3 km storm-relative helicity
341 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.

761 
WUUS53 KLSX 131022
SVRLSX
MOC019-131100-
/O.NEW.KLSX.SV.W.0049.140413T1022Z-140413T1100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
522 AM CDT SUN APR 13 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 600 AM CDT

* AT 521 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES SOUTHWEST
  OF COLUMBIA...AND MOVING EAST AT 30 MPH.

  HAZARD...QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

* LOCATIONS IMPACTED INCLUDE...
  COLUMBIA AND ASHLAND.

THIS WARNING INCLUDES JEWELL CEMETERY HISTORIC SITE AND ROCK BRIDGE
STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 121 TO EXIT 133.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3899 9243 3896 9215 3890 9217 3885 9214
      3883 9215 3881 9214 3880 9216 3877 9216
      3872 9220 3872 9224 3879 9238 3882 9239
      3883 9244 3888 9248 3891 9249
TIME...MOT...LOC 1022Z 277DEG 25KT 3889 9238

HAIL...1.00IN
WIND...<50MPH

$$

KANOFSKY
2 follow-up statements
048 
WWUS53 KLSX 131029
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
529 AM CDT SUN APR 13 2014

MOC019-131100-
/O.CON.KLSX.SV.W.0049.000000T0000Z-140413T1100Z/
BOONE MO-
529 AM CDT SUN APR 13 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
BOONE COUNTY UNTIL 600 AM CDT...

AT 528 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR COLUMBIA...AND
MOVING EAST AT 30 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES IS EXPECTED.

LOCATIONS IMPACTED INCLUDE...
ASHLAND.

THIS WARNING INCLUDES JEWELL CEMETERY HISTORIC SITE AND ROCK BRIDGE
STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 70 IN MISSOURI FROM EXIT 126 TO EXIT 133.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3898 9234 3896 9215 3890 9217 3887 9216
      3885 9214 3883 9215 3881 9214 3880 9216
      3877 9216 3872 9220 3872 9224 3879 9238
      3882 9239
TIME...MOT...LOC 1030Z 277DEG 25KT 3888 9231

HAIL...1.00IN
WIND...<50MPH

$$

KANOFSKY
157 
WWUS53 KLSX 131043
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
543 AM CDT SUN APR 13 2014

MOC019-131053-
/O.CAN.KLSX.SV.W.0049.000000T0000Z-140413T1100Z/
BOONE MO-
543 AM CDT SUN APR 13 2014

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BOONE COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.  HOWEVER...SMALL HAIL IS STILL POSSIBLE WITH THIS 
THUNDERSTORM AS IT MOVES THROUGH NORTHERN CALLAWAY COUNTY
BETWEEN NOW AND 615 AM.

LAT...LON 3898 9234 3896 9215 3890 9217 3887 9216
      3885 9214 3883 9215 3881 9214 3880 9216
      3877 9216 3872 9220 3872 9224 3879 9238
      3882 9239
TIME...MOT...LOC 1043Z 277DEG 25KT 3887 9219

$$

TRUETT

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 13, 7:52 AM CDTSevere Thunderstorm WarningLSXLincoln53 min
Apr 13, 8:19 AM CDTSevere Thunderstorm WarningLSXFranklin, Jefferson, Saint Louis41 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2014Every severe thunderstorm warning in 2014

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.