Alert archive / Missouri / Tornado Warnings in 2005

Tornado Warning 27, NWS St. Louis, MO

September 20, 2005Saint Francois County, Missouri

NWS St. Louis, MO issued this tornado warning at Sep 20, 2005, 1:23 AM CDT for Saint Francois County, Missouri. It was in force for 26 min. 2 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: Sep 20, 2005, 1:23 AM CDT (06:23 UTC)
Expired: Sep 20, 2005, 1:49 AM CDT
In force: 26 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Saint Francois County, MO

The radar

The St Louis radar (KLSX), 108 km from the middle of the area, began a volume at 06:23 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
Sep 20, 1:27 AM CDT	TSTM WND DMG	7 S Farmington, MO	TREES AND LIMBS DOWN ALONG HIGHWAY 67 JUST NORTH OF KNOB LICK
Sep 20, 1:35 AM CDT	TORNADO	Knob Lick, MO	PUBLIC REPORTED A TORNADO CROSSING HWY 67 NEAR THE KNOB LICK FIRE TOWER.

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, 6.4 hours before the alert went out and 308 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: 1475 J/kg
Mixed-layer CIN: -93 J/kg
Mixed-layer LCL: 1775 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 200623
TORLSX
MOC187-200715-
/O.NEW.KLSX.TO.W.0027.050920T0623Z-050920T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
123 AM CDT TUE SEP 20 2005

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

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

* UNTIL 215 AM CDT

* AT 119 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 7 MILES SOUTHWEST OF
  FARMINGTON...MOVING EAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
RURAL SOUTHEASTERN ST. FRANCOIS COUNTY

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO THE
LOWEST LEVEL OF THE BUILDING. STAY AWAY FROM WINDOWS. IF DRIVING...DO
NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

LAT...LON 3781 9062 3765 9063 3764 9015 3781 9037

$$

PEDIGO

1 follow-up statement

000 
WWUS53 KLSX 200649
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
148 AM CDT TUE SEP 20 2005

MOC187-200658-
/O.CAN.KLSX.TO.W.0027.000000T0000Z-050920T0715Z/
ST. FRANCOIS MO-
148 AM CDT TUE SEP 20 2005

...THE TORNADO WARNING FOR SOUTHERN ST. FRANCOIS COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE COUNTY.

LAT...LON 3781 9062 3765 9063 3764 9015 3781 9037

$$

PEDIGO

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 19, 7:04 PM CDT	Severe Thunderstorm Warning	LSX	Gasconade	26 min
Sep 19, 7:15 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Warren	45 min
Sep 19, 7:35 PM CDT	Severe Thunderstorm Warning	LSX	Saint Charles	49 min
Sep 19, 7:47 PM CDT	Severe Thunderstorm Warning	LSX	Saint Louis	47 min
Sep 19, 7:54 PM CDT	Severe Thunderstorm Warning	LSX	Moniteau	36 min
Sep 19, 7:56 PM CDT	Severe Thunderstorm Warning	LSX	Boone	45 min
Sep 19, 8:08 PM CDT	Severe Thunderstorm Warning	LSX	City of Saint Louis	32 min
Sep 19, 9:07 PM CDT	Severe Thunderstorm Warning	LSX	Cole	8 min
Sep 19, 9:15 PM CDT	Severe Thunderstorm Warning	LSX	Osage	45 min
Sep 20, 12:48 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Washington	34 min

Nearby

Tornado Warnings in Missouri, 2005 Every tornado warning in 2005 Tornadoes in 2005

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.