Alert archive / Missouri / Tornado Warnings in 2015

Tornado Warning 39, NWS St. Louis, MO

July 8, 2015Saint Francois County, Washington County, Missouri

NWS St. Louis, MO issued this tornado warning at Jul 8, 2015, 5:42 PM CDT for Saint Francois County, Washington County, Missouri. It was in force for 33 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
Jul 8, 2015, 5:42 PM CDT (22:42 UTC)
Expired
Jul 8, 2015, 6:15 PM CDT
In force
33 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Saint Francois County, MO, Washington County, MO

The radar

The St Louis radar (KLSX), 92 km from the middle of the area, began a volume at 22:41 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

Springfield, MO (KSGF), launched 12:00Z, 10.7 hours before the alert went out and 286 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-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 2015-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 461 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 2015-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 182 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
461 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
533 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
182 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

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

454 
WFUS53 KLSX 082242
TORLSX
MOC187-221-082315-
/O.NEW.KLSX.TO.W.0039.150708T2242Z-150708T2315Z/

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

THE NATIONAL WEATHER SERVICE IN ST LOUIS  HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN WASHINGTON COUNTY IN EAST CENTRAL MISSOURI...
  WEST CENTRAL ST. FRANCOIS COUNTY IN SOUTHEASTERN MISSOURI...

* UNTIL 615 PM CDT
    
* AT 541 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 7 MILES EAST OF COURTOIS...MOVING NORTHEAST AT
  35 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. 

* LOCATIONS IMPACTED INCLUDE...
  BONNE TERRE...POTOSI...LEADWOOD...IRONDALE...MINERAL POINT...OLD
  MINES...CALEDONIA...SHIRLEY...FRANKCLAY...BELGRADE AND CADET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3780 9105 3811 9071 3801 9063 3801 9061
      3792 9053 3777 9070 3774 9094 3774 9099
TIME...MOT...LOC 2241Z 232DEG 32KT 3779 9096 

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

$$

BYRD
2 follow-up statements
888 
WWUS53 KLSX 082303
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
603 PM CDT WED JUL 8 2015

MOC187-221-082315-
/O.CON.KLSX.TO.W.0039.000000T0000Z-150708T2315Z/
WASHINGTON MO-ST. FRANCOIS MO-
603 PM CDT WED JUL 8 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CDT FOR
SOUTHEASTERN WASHINGTON AND WEST CENTRAL ST. FRANCOIS COUNTIES...
    
AT 602 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR POTOSI...MOVING NORTHEAST AT 35 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. 

LOCATIONS IMPACTED INCLUDE...
BONNE TERRE...POTOSI...MINERAL POINT...OLD MINES AND CADET. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3792 9091 3811 9071 3801 9063 3801 9061
      3792 9053 3783 9079
TIME...MOT...LOC 2302Z 236DEG 32KT 3790 9081 

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

$$

BYRD
955 
WWUS53 KLSX 082312
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
612 PM CDT WED JUL 8 2015

MOC187-221-082322-
/O.EXP.KLSX.TO.W.0039.000000T0000Z-150708T2315Z/
WASHINGTON MO-ST. FRANCOIS MO-
612 PM CDT WED JUL 8 2015

...THE TORNADO WARNING FOR SOUTHEASTERN WASHINGTON AND WEST CENTRAL
ST. FRANCOIS COUNTIES WILL EXPIRE AT 615 PM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER APPEARS CAPABLE OF PRODUCING A TORNADO.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER HEAVY RAIN
IS STILL POSSIBLE WITH THIS THUNDERSTORM.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT FOR SOUTHEASTERN
MISSOURI.

LAT...LON 3792 9091 3811 9071 3801 9063 3801 9061
      3792 9053 3783 9079
TIME...MOT...LOC 2311Z 232DEG 32KT 3790 9081 

$$

BYRD

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 7, 10:57 PM CDTRiver Flood WarningLSXLewis29 hr
Jul 8, 10:15 AM CDTRiver Flood WarningLSXCallaway, Osage16 days
Jul 8, 10:15 AM CDTRiver Flood WarningLSXFranklin, Warren7 days
Jul 8, 10:15 AM CDTRiver Flood WarningLSXSaint Charles, Saint Louis8 days
Jul 8, 11:05 AM CDTRiver Flood WarningLSXOsage40 hr
Jul 8, 12:49 PM CDTRiver Flood WarningLSXMarion3 days
Jul 8, 2:18 PM CDTRiver Flood WarningLSXLincoln62 hr
Jul 8, 2:18 PM CDTRiver Flood WarningLSXLincoln5 days

Nearby

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