Alert archive / Missouri / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 39, NWS St. Louis, MO

April 8, 20154 counties in Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Apr 8, 2015, 6:56 PM CDT for 4 counties in Missouri. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 8, 2015, 6:56 PM CDT (23:56 UTC)
Expired: Apr 8, 2015, 7:45 PM CDT
In force: 49 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Audrain County, MO, Boone County, MO, Monroe County, MO, Shelby County, MO

The radar

The St Louis radar (KLSX), 152 km from the middle of the area, began a volume at 23:57 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.

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 11.9 hours before the alert went out and 293 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: 454 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 263 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.0

Open this sounding in Storm Lab

The text

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

769 
WUUS53 KLSX 082356
SVRLSX
MOC007-019-137-205-090045-
/O.NEW.KLSX.SV.W.0039.150408T2356Z-150409T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
656 PM CDT WED APR 8 2015

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN AUDRAIN COUNTY IN CENTRAL MISSOURI...
  NORTHERN BOONE COUNTY IN CENTRAL MISSOURI...
  MONROE COUNTY IN NORTHEAST MISSOURI...
  SOUTHWESTERN SHELBY COUNTY IN NORTHEAST MISSOURI...

* UNTIL 745 PM CDT

* AT 655 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM HUNTSVILLE TO 5 MILES NORTHEAST OF MIDWAY...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...
  CENTRALIA...SHELBINA...MEXICO...PARIS...SANTA FE...STURGEON...
  HALLSVILLE...MADISON...WOODLAWN...MAUD...GRANVILLE...DUNCANS
  BRIDGE...HOLLIDAY...THOMPSON...VANDIVER AND BENTON CITY.

THIS WARNING INCLUDES FINGER LAKES STATE PARK AND UNION COVERED
BRIDGE HISTORIC SITE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3925 9243 3925 9232 3963 9230 3978 9197
      3914 9171 3901 9245 3912 9250
TIME...MOT...LOC 2356Z 264DEG 36KT 3940 9256 3905 9239

HAIL...1.00IN
WIND...60MPH

$$

TRUETT

2 follow-up statements

977 
WWUS53 KLSX 090023
SVSLSX

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

MOC019-090033-
/O.CAN.KLSX.SV.W.0039.000000T0000Z-150409T0045Z/
BOONE MO-
723 PM CDT WED APR 8 2015

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

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED ACROSS 
THE WARNED AREA.

LAT...LON 3964 9227 3977 9197 3926 9176 3924 9228
      3925 9228
TIME...MOT...LOC 0023Z 241DEG 39KT 3962 9235 3928 9218

$$

MOC007-137-205-090045-
/O.CON.KLSX.SV.W.0039.000000T0000Z-150409T0045Z/
MONROE MO-SHELBY MO-AUDRAIN MO-
723 PM CDT WED APR 8 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
AUDRAIN...SOUTH CENTRAL SHELBY AND MONROE COUNTIES UNTIL 745 PM
CDT...

AT 721 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHEAST OF CAIRO TO STURGEON...AND MOVING
NORTHEAST AT 45 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...
PARIS...SHELBINA...SANTA FE...MADISON...WOODLAWN...MAUD...
GRANVILLE...DUNCANS BRIDGE AND HOLLIDAY.

THIS WARNING INCLUDES UNION COVERED BRIDGE HISTORIC SITE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3964 9227 3977 9197 3926 9176 3924 9228
      3925 9228
TIME...MOT...LOC 0023Z 241DEG 39KT 3962 9235 3928 9218

HAIL...1.00IN
WIND...60MPH

$$

TRUETT

182 
WWUS53 KLSX 090037
SVSLSX

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

MOC007-137-205-090047-
/O.EXP.KLSX.SV.W.0039.000000T0000Z-150409T0045Z/
MONROE MO-SHELBY MO-AUDRAIN MO-
737 PM CDT WED APR 8 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN AUDRAIN...SOUTH
CENTRAL SHELBY AND MONROE COUNTIES WILL EXPIRE AT 745 PM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.

LAT...LON 3964 9227 3977 9197 3926 9176 3924 9228
      3925 9228
TIME...MOT...LOC 0037Z 241DEG 39KT 3969 9218 3935 9201

$$

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, 4:53 PM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois	37 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

Nearby

Severe Thunderstorm Warnings in Missouri, 2015 Every severe thunderstorm warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.