Alert archive / Missouri / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 45, NWS St. Louis, MO

April 3, 20144 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 3, 2014, 8:09 PM CDT for 4 counties in Missouri. It was in force for 51 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 3, 2014, 8:09 PM CDT (01:09 UTC)
Expired: Apr 3, 2014, 9:00 PM CDT
In force: 51 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Crawford County, MO, Franklin County, MO, Gasconade County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 86 km from the middle of the area, began a volume at 01:12 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

Time	Report	Where	Remark
Apr 3, 8:22 PM CDT	HAIL 1	Cuba, MO	RELAYED FROM SPOTTER
Apr 3, 8:39 PM CDT	HAIL 0.25	Sullivan, MO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 3, 4:58 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.2 hours before the alert went out and 255 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2093 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 103 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.

545 
WUUS53 KLSX 040109
SVRLSX
MOC055-071-073-221-040200-
/O.NEW.KLSX.SV.W.0045.140404T0109Z-140404T0200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
809 PM CDT THU APR 3 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CRAWFORD COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  EXTREME SOUTHERN GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  NORTHWESTERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 900 PM CDT

* AT 803 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES NORTH OF
  ST. JAMES...AND MOVING EAST AT 40 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  STEELVILLE...CUBA...BOURBON...SULLIVAN...ANTHONIES MILL...ST.
  CLAIR...LEASBURG...PARKWAY...OAK HILL...JAPAN...ST. CLOUD...STANTON
  AND PINEY PARK.

THIS WARNING INCLUDES MERAMEC STATE PARK AND ONONDAGA CAVE STATE
PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

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

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 3815 9153 3815 9164 3816 9165 3843 9095
      3801 9077 3793 9153
TIME...MOT...LOC 0109Z 248DEG 37KT 3809 9154

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH

$$

GKS

1 follow-up statement

396 
WWUS53 KLSX 040129
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
829 PM CDT THU APR 3 2014

MOC055-071-073-221-040200-
/O.CON.KLSX.SV.W.0045.000000T0000Z-140404T0200Z/
CRAWFORD MO-FRANKLIN MO-GASCONADE MO-WASHINGTON MO-
829 PM CDT THU APR 3 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
WASHINGTON...SOUTHERN GASCONADE...SOUTHERN FRANKLIN AND NORTHERN
CRAWFORD COUNTIES UNTIL 900 PM CDT...

AT 825 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 8 MILES SOUTHEAST OF GERALD TO 6 MILES EAST OF
STEELVILLE...AND MOVING EAST AT 45 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

SOURCE...TRAINED WEATHER SPOTTERS.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

LOCATIONS IMPACTED INCLUDE...
SULLIVAN...ANTHONIES MILL...ST. CLAIR...PARKWAY...STANTON AND PINEY
PARK.

THIS WARNING INCLUDES MERAMEC STATE PARK AND ONONDAGA CAVE STATE
PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

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

THESE STORMS ARE PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A
STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS!

&&

LAT...LON 3794 9141 3816 9142 3824 9144 3843 9095
      3801 9077
TIME...MOT...LOC 0129Z 248DEG 37KT 3832 9121 3798 9120

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH

$$

GKS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 7:00 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Saint Charles, Warren	45 min
Apr 3, 7:13 PM CDT	Tornado Warning Tornado observed	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren	32 min
Apr 3, 7:22 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis, Warren	53 min
Apr 3, 8:04 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Charles, Saint Louis, City of Saint Louis	41 min
Apr 3, 8:23 PM CDT	Tornado Warning Tornado observed	LSX	Saint Louis, City of Saint Louis	22 min
Apr 3, 9:00 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Sainte Genevieve, Saint Louis, Washington	45 min
Apr 3, 9:25 PM CDT	Flash Flood Warning	LSX	Crawford, Franklin, Jefferson, Washington	9 hr
Apr 3, 9:53 PM CDT	River Flood Warning	LSX	Callaway, Osage	65 hr
Apr 3, 9:53 PM CDT	River Flood Warning	LSX	Gasconade, Montgomery	3 days
Apr 3, 9:53 PM CDT	River Flood Warning	LSX	Gasconade, Montgomery	57 hr
Apr 3, 10:13 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve	47 min
Apr 3, 10:22 PM CDT	Areal Flood Warning	LSX	Boone, Callaway	10 hr
Apr 4, 6:26 AM CDT	Areal Flood Warning	LSX	Crawford, Franklin, Jefferson, Washington	9 hr
Apr 4, 9:53 AM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	65 hr
Apr 4, 9:53 AM CDT	River Flood Warning	LSX	Jefferson, Saint Louis	3 days

Nearby

Severe Thunderstorm Warnings in Missouri, 2014 Every 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.