Alert archive / Missouri / Tornado Warnings in 2014

Tornado Warning 15, NWS St. Louis, MO

April 27, 2014Boone County, Callaway County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 27, 2014, 10:41 PM CDT for Boone County, Callaway County, Missouri. It was in force for 34 min. 3 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 27, 2014, 10:41 PM CDT (03:41 UTC)
Expired: Apr 27, 2014, 11:15 PM CDT
In force: 34 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Boone County, MO, Callaway County, MO

The radar

The St Louis radar (KLSX), 122 km from the middle of the area, began a volume at 03:42 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 27, 10:50 PM CDT	TSTM WND DMG	2 N New Bloomfield, MO	TREE WAS BLOWN DOWN ON STATE ROUTE Y NEAR COUNTY ROAD 379.
Apr 27, 11:03 PM CDT	TSTM WND GST 50	Fulton, MO
Apr 27, 11:03 PM CDT	HAIL 0.25	Fulton, 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, 3.7 hours before the alert went out and 258 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: 409 J/kg
Mixed-layer CIN: -52 J/kg
Mixed-layer LCL: 501 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 353 m²/s²
0-3 km storm-relative helicity: 357 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 6.8

Open this sounding in Storm Lab

The text

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

481 
WFUS53 KLSX 280341
TORLSX
MOC019-027-280415-
/O.NEW.KLSX.TO.W.0015.140428T0341Z-140428T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1041 PM CDT SUN APR 27 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN BOONE COUNTY IN CENTRAL MISSOURI...
  CALLAWAY COUNTY IN CENTRAL MISSOURI...

* UNTIL 1115 PM CDT

* AT 1038 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 6 MILES WEST OF LAKE MYKEE...AND MOVING
  NORTHEAST AT 50 MPH.

  HAZARD...TORNADO.

  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...
  FULTON AROUND 1100 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE CARRINGTON.

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.

&&

LAT...LON 3906 9195 3906 9181 3878 9174 3858 9216
      3861 9220 3862 9220 3864 9222 3864 9225
      3874 9233
TIME...MOT...LOC 0342Z 237DEG 45KT 3872 9216

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

GLASS

3 follow-up statements

596 
WWUS53 KLSX 280353
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1053 PM CDT SUN APR 27 2014

MOC019-280403-
/O.CAN.KLSX.TO.W.0015.000000T0000Z-140428T0415Z/
BOONE MO-
1053 PM CDT SUN APR 27 2014

...THE TORNADO WARNING FOR SOUTHEASTERN BOONE COUNTY IS CANCELLED...

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

LAT...LON 3881 9214 3889 9215 3906 9195 3906 9181
      3878 9174 3858 9216 3861 9220 3862 9220
TIME...MOT...LOC 0353Z 237DEG 45KT 3879 9201

$$

MOC027-280415-
/O.CON.KLSX.TO.W.0015.000000T0000Z-140428T0415Z/
CALLAWAY MO-
1053 PM CDT SUN APR 27 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR CALLAWAY COUNTY UNTIL 1115
PM CDT...

AT 1050 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR NEW BLOOMFIELD...AND MOVING NORTHEAST AT 50 MPH.

HAZARD...TORNADO.

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...
  FULTON AROUND 1100 PM CDT.

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.

&&

LAT...LON 3881 9214 3889 9215 3906 9195 3906 9181
      3878 9174 3858 9216 3861 9220 3862 9220
TIME...MOT...LOC 0353Z 237DEG 45KT 3879 9201

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

GLASS

226 
WWUS53 KLSX 280405
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1105 PM CDT SUN APR 27 2014

MOC027-280415-
/O.CON.KLSX.TO.W.0015.000000T0000Z-140428T0415Z/
CALLAWAY MO-
1105 PM CDT SUN APR 27 2014

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL CALLAWAY COUNTY
UNTIL 1115 PM CDT...

AT 1103 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR FULTON...AND MOVING NORTHEAST AT 50 MPH.

HAZARD...TORNADO.

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...
  AUXVASSE AROUND 1110 PM CDT.

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.

&&

LAT...LON 3878 9174 3866 9200 3872 9206 3896 9207
      3906 9195 3906 9181
TIME...MOT...LOC 0405Z 237DEG 45KT 3889 9191

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

GLASS

585 
WWUS53 KLSX 280416
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1116 PM CDT SUN APR 27 2014

MOC027-280426-
/O.EXP.KLSX.TO.W.0015.000000T0000Z-140428T0415Z/
CALLAWAY MO-
1116 PM CDT SUN APR 27 2014

...THE TORNADO WARNING FOR CENTRAL CALLAWAY COUNTY HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
 HOWEVER...GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 3878 9174 3866 9200 3872 9206 3896 9207
      3906 9195 3906 9181
TIME...MOT...LOC 0405Z 237DEG 45KT 3889 9191

$$

GLASS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 7:12 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Monroe, Montgomery, Ralls	33 min
Apr 27, 10:08 PM CDT	River Flood Warning	LSX	Marion	8 days
Apr 27, 10:08 PM CDT	River Flood Warning	LSX	Pike	8 days
Apr 27, 10:08 PM CDT	River Flood Warning	LSX	Pike	35 days
Apr 28, 12:37 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway	38 min
Apr 28, 1:13 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery	47 min
Apr 28, 1:56 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Lincoln, Montgomery, Pike, Warren	49 min
Apr 28, 2:27 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	48 min
Apr 28, 2:42 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	48 min
Apr 28, 2:43 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles	47 min
Apr 28, 3:06 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Jefferson, Saint Charles, Saint Louis	39 min
Apr 28, 3:19 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	41 min
Apr 28, 3:28 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln	47 min
Apr 28, 3:43 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis, City of Saint Louis	47 min
Apr 28, 3:56 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles, Saint Louis	49 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.