Alert archive / Missouri / Tornado Warnings in 2015

Tornado Warning 8, NWS St. Louis, MO

April 8, 2015Sainte Genevieve County, Saint Francois County, Missouri

NWS St. Louis, MO issued this tornado warning at Apr 8, 2015, 4:53 PM CDT for Sainte Genevieve County, Saint Francois County, Missouri. It was in force for 37 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 8, 2015, 4:53 PM CDT (21:53 UTC)
Expired: Apr 8, 2015, 5:30 PM CDT
In force: 37 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 4.25 in

Counties Saint Francois County, MO, Sainte Genevieve County, MO

The radar

The St Louis radar (KLSX), 110 km from the middle of the area, began a volume at 21:53 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 8, 5:02 PM CDT	HAIL 1.75	3 Se Farmington, MO	ALONG HIGHWAY OO.

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 8, 1:05 PM CDT	Severe Thunderstorm Watch	SPC	5 hr
Apr 8, 4:07 PM CDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.9 hours before the alert went out and 295 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: 195 J/kg
Mixed-layer CIN: -238 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 66 m²/s²
0-3 km storm-relative helicity: 142 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.7

Open this sounding in Storm Lab

The text

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

973 
WFUS53 KLSX 082153
TORLSX
MOC186-187-082245-
/O.NEW.KLSX.TO.W.0008.150408T2153Z-150408T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
453 PM CDT WED APR 8 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
  ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 545 PM CDT

* AT 451 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR COFFMAN...AND MOVING SOUTHEAST AT 20 MPH.

  HAZARD...TORNADO AND SOFTBALL 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...
  COFFMAN AROUND 500 PM CDT.
  WOMAC AROUND 515 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE MINNITH.

THIS WARNING INCLUDES HAWN STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 55 IN MISSOURI FROM EXIT 141 TO EXIT 143.

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 3777 9050 3795 9025 3788 8994 3786 8994
      3782 8999 3767 9010 3764 9014
TIME...MOT...LOC 2154Z 306DEG 16KT 3780 9023

TORNADO...RADAR INDICATED
HAIL...4.25IN

$$

TRUETT

2 follow-up statements

443 
WWUS53 KLSX 082210
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
510 PM CDT WED APR 8 2015

MOC186-187-082245-
/O.CON.KLSX.TO.W.0008.000000T0000Z-150408T2245Z/
STE. GENEVIEVE MO-ST. FRANCOIS MO-
510 PM CDT WED APR 8 2015

...A TORNADO WARNING REMAINS IN EFFECT FOR ST. FRANCOIS AND SOUTHERN
STE. GENEVIEVE COUNTIES UNTIL 545 PM CDT...

AT 507 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR COFFMAN...AND MOVING EAST AT 25 MPH.

HAZARD...TORNADO AND TENNIS BALL 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 AFFECT MAINLY RURAL AREAS OF SOUTHERN STE.
GENEVIEVE AND ST. FRANCOIS COUNTIES...INCLUDING THE FOLLOWING
LOCATIONS...MINNITH.

THIS WARNING INCLUDES HAWN STATE PARK.

THIS WARNING ALSO INCLUDES...
INTERSTATE 55 IN MISSOURI FROM EXIT 141 TO EXIT 143.

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 3773 9039 3793 9020 3788 8995 3787 8994
      3786 8994 3782 8999 3767 9010 3764 9014
TIME...MOT...LOC 2211Z 278DEG 21KT 3777 9013

TORNADO...RADAR INDICATED
HAIL...2.50IN

$$

TRUETT

447 
WWUS53 KLSX 082230
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
530 PM CDT WED APR 8 2015

MOC186-187-082240-
/O.CAN.KLSX.TO.W.0008.000000T0000Z-150408T2245Z/
STE. GENEVIEVE MO-ST. FRANCOIS MO-
530 PM CDT WED APR 8 2015

...THE TORNADO WARNING FOR ST. FRANCOIS AND SOUTHERN STE. GENEVIEVE
COUNTIES IS CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN 
EFFECT FOR THE AREA UNTIL 615 PM.   

LAT...LON 3773 9039 3793 9020 3788 8995 3787 8994
      3786 8994 3782 8999 3767 9010 3764 9014
TIME...MOT...LOC 2230Z 278DEG 21KT 3775 8999

$$

TRUETT

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 8, 9:23 AM CDT	River Flood Warning	LSX	Jefferson	4 days
Apr 8, 11:33 AM CDT	Severe Thunderstorm Warning	LSX	Cole, Osage	42 min
Apr 8, 12:36 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Cole, Osage	39 min
Apr 8, 12:46 PM CDT	Severe Thunderstorm Warning	LSX	Boone, Callaway	44 min
Apr 8, 1:07 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles	38 min
Apr 8, 1:11 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Osage, Warren	34 min
Apr 8, 1:33 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade	27 min
Apr 8, 1:43 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Warren, Washington	47 min
Apr 8, 2:23 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade	52 min
Apr 8, 2:26 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Jefferson, Washington	49 min
Apr 8, 3:05 PM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Gasconade, Iron, Jefferson, Washington	55 min
Apr 8, 3:07 PM CDT	Tornado Warning	LSX	Crawford, Washington	23 min
Apr 8, 3:20 PM CDT	Tornado Warning	LSX	Jefferson, Saint Francois, Washington	25 min
Apr 8, 3:24 PM CDT	Flash Flood Watch	LSX	Boone, Callaway, Cole, Crawford, Franklin, Gasconade and 11 more	31 hr
Apr 8, 3:40 PM CDT	Tornado Warning	LSX	Jefferson, Sainte Genevieve, Saint Francois, Washington	35 min
Apr 8, 3:59 PM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois	31 min
Apr 8, 4:20 PM CDT	Areal Flood Advisory	LSX	Washington	4 hr
Apr 8, 4:26 PM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois	34 min
Apr 8, 4:57 PM CDT	Flash Flood Warning	LSX	Sainte Genevieve, Saint Francois, Washington	4 hr
Apr 8, 5:05 PM CDT	Tornado Warning	LSX	Madison, Sainte Genevieve, Saint Francois	25 min
Apr 8, 5:25 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois, Washington	22 min
Apr 8, 5:28 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Sainte Genevieve, Saint Francois	47 min
Apr 8, 5:50 PM CDT	Flash Flood Warning	LSX	Sainte Genevieve, Saint Francois	3 hr
Apr 8, 6:14 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Sainte Genevieve, Saint Francois	46 min
Apr 8, 6:27 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Callaway, Moniteau, Monroe	33 min
Apr 8, 6:56 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Monroe, Shelby	49 min

Nearby

Tornado Warnings in Missouri, 2015 Every tornado warning in 2015 Tornadoes in 2015

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.