Alert archive / Missouri / Tornado Warnings in 2014

Tornado Warning 12, NWS St. Louis, MO

April 3, 2014Franklin County, Gasconade County, Osage County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 3, 2014, 6:06 PM CDT for Franklin County, Gasconade County, Osage County, Missouri. It was in force for 24 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: Apr 3, 2014, 6:06 PM CDT (23:06 UTC)
Expired: Apr 3, 2014, 6:30 PM CDT
In force: 24 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

Counties Franklin County, MO, Gasconade County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 63 km from the middle of the area, began a volume at 23:06 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, 6:08 PM CDT	HAIL 0.7	Linn, 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 12:00Z, 11.1 hours before the alert went out and 281 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: 1727 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 686 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 417 m²/s²
0-3 km storm-relative helicity: 423 m²/s²
Significant tornado parameter: 3.5
Supercell composite: 15.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

663 
WFUS53 KLSX 032306
TORLSX
MOC071-073-151-032330-
/O.NEW.KLSX.TO.W.0012.140403T2306Z-140403T2330Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
606 PM CDT THU APR 3 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN FRANKLIN COUNTY IN EAST CENTRAL MISSOURI...
  GASCONADE COUNTY IN EAST CENTRAL MISSOURI...
  SOUTHEASTERN OSAGE COUNTY IN CENTRAL MISSOURI...

* UNTIL 630 PM CDT

* AT 602 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR RICH FOUNTAIN...AND MOVING EAST AT 50 MPH.

  HAZARD...TORNADO AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
           TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
           LIKELY.

* THIS DANGEROUS STORM WILL BE NEAR...
  MOUNT STERLING AROUND 620 PM CDT.
  DRAKE AROUND 625 PM CDT.
  SWISS AROUND 630 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE BAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 3868 9127 3865 9123 3863 9122 3863 9123
      3862 9122 3832 9114 3830 9190 3848 9195
TIME...MOT...LOC 2306Z 253DEG 45KT 3840 9184

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

BRITT

1 follow-up statement

630 
WWUS53 KLSX 032332
SVSLSX

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

MOC071-073-151-032342-
/O.EXP.KLSX.TO.W.0012.000000T0000Z-140403T2330Z/
FRANKLIN MO-GASCONADE MO-OSAGE MO-
632 PM CDT THU APR 3 2014

...THE TORNADO WARNING FOR SOUTHEASTERN OSAGE...GASCONADE AND
NORTHWESTERN FRANKLIN COUNTIES HAS EXPIRED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT
FOR THE AREA.

LAT...LON 3868 9127 3865 9123 3863 9122 3863 9123
      3862 9122 3832 9114 3830 9190 3848 9195
TIME...MOT...LOC 2306Z 253DEG 45KT 3840 9184

$$

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 2, 8:55 PM CDT	River Flood Warning	LSX	Lincoln	60 hr
Apr 3, 2:19 AM CDT	Areal Flood Advisory	LSX	Boone, Moniteau	3 hr
Apr 3, 3:06 AM CDT	Flash Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	6 hr
Apr 3, 4:55 AM CDT	Flash Flood Warning	LSX	Gasconade, Osage	6 hr
Apr 3, 5:05 AM CDT	Severe Thunderstorm Warning	LSX	Saint Louis	40 min
Apr 3, 5:19 AM CDT	Severe Thunderstorm Warning	LSX	City of Saint Louis	56 min
Apr 3, 5:23 AM CDT	Tornado Warning Tornado observed	LSX	Saint Louis, City of Saint Louis	37 min
Apr 3, 6:15 AM CDT	River Flood Warning	LSX	Cole	64 hr
Apr 3, 8:11 AM CDT	Areal Flood Advisory	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	3 hr
Apr 3, 8:18 AM CDT	River Flood Warning	LSX	Osage	30 hr
Apr 3, 8:58 AM CDT	River Flood Warning	LSX	Monroe	4 days
Apr 3, 9:11 AM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway	49 min
Apr 3, 9:23 AM CDT	Areal Flood Warning	LSX	Boone, Callaway, Cole, Moniteau	3 hr
Apr 3, 12:03 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis	42 min
Apr 3, 1:00 PM CDT	Areal Flood Warning	LSX	Boone, Moniteau	24 hr
Apr 3, 1:09 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	36 min
Apr 3, 1:32 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis	43 min
Apr 3, 1:43 PM CDT	Flash Flood Warning	LSX	Crawford, Franklin, Gasconade, Jefferson, Washington	8 hr
Apr 3, 1:54 PM CDT	River Flood Warning	LSX	Marion	42 hr
Apr 3, 1:56 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Moniteau	49 min
Apr 3, 2:45 PM CDT	Flash Flood Warning	LSX	Boone, Callaway, Cole, Moniteau, Osage	8 hr
Apr 3, 3:36 PM CDT	River Flood Warning	LSX	Jefferson	4 days
Apr 3, 3:36 PM CDT	River Flood Warning	LSX	Franklin	71 hr
Apr 3, 5:37 PM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	38 min
Apr 3, 5:48 PM CDT	Tornado Warning	LSX	Cole, Osage	27 min
Apr 3, 6:31 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Saint Charles, Warren	44 min
Apr 3, 6:34 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Lewis	41 min
Apr 3, 6:36 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion, Monroe, Shelby	39 min

Nearby

Tornado Warnings in Missouri, 2014 Every tornado warning in 2014 Tornadoes 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.