Alert archive / Missouri / Tornado Warnings in 2009

Tornado Warning 20, NWS St. Louis, MO

May 13, 2009Lincoln County, Missouri

NWS St. Louis, MO issued this tornado warning at May 13, 2009, 10:43 PM CDT for Lincoln County, Missouri. It was in force for 20 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: May 13, 2009, 10:43 PM CDT (03:43 UTC)
Expired: May 13, 2009, 11:03 PM CDT
In force: 20 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

County Lincoln County, MO

The radar

The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 03:43 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 13, 9:56 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 3.7 hours before the alert went out and 220 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: 1574 J/kg
Mixed-layer CIN: -113 J/kg
Mixed-layer LCL: 930 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 350 m²/s²
0-3 km storm-relative helicity: 407 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 8.7

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 140343
TORLSX
MOC113-140415-
/O.NEW.KLSX.TO.W.0020.090514T0343Z-090514T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1043 PM CDT WED MAY 13 2009

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  LINCOLN COUNTY IN EAST CENTRAL MISSOURI...

* UNTIL 1115 PM CDT

* AT 1042 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
  STORM WAS LOCATED 6 MILES NORTH OF HAWK POINT...OR 11 MILES
  NORTHWEST OF TROY...AND MOVING EAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ELSBERRY...DAVIS...WINFIELD...CAVE...SILEX...NEW HOPE AND FOLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN ST LOUIS.

&&

LAT...LON 3922 9072 3914 9072 3911 9069 3908 9069
      3906 9071 3904 9071 3903 9070 3898 9069
      3899 9120 3914 9121 3923 9078 3922 9073
TIME...MOT...LOC 0343Z 258DEG 32KT 3905 9115

$$

BRITT

2 follow-up statements

000 
WWUS53 KLSX 140356
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1056 PM CDT WED MAY 13 2009

MOC113-140415-
/O.CON.KLSX.TO.W.0020.000000T0000Z-090514T0415Z/
LINCOLN MO-
1056 PM CDT WED MAY 13 2009

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

AT 1055 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 6 MILES SOUTH OF NEW
HOPE...OR 7 MILES NORTHEAST OF TROY...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  ELSBERRY...WINFIELD AND FOLEY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

TO REPORT SEVERE WEATHER...CALL THE NEAREST LAW ENFORCEMENT AGENCY
AND ASK THEM TO RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN ST LOUIS.

&&

LAT...LON 3922 9072 3914 9072 3911 9069 3908 9069
      3906 9071 3904 9071 3903 9070 3898 9069
      3899 9094 3920 9093 3923 9079
TIME...MOT...LOC 0356Z 269DEG 50KT 3904 9086

$$

BRITT

000 
WWUS53 KLSX 140403
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1103 PM CDT WED MAY 13 2009

MOC113-140413-
/O.CAN.KLSX.TO.W.0020.000000T0000Z-090514T0415Z/
LINCOLN MO-
1103 PM CDT WED MAY 13 2009

...THE TORNADO WARNING FOR NORTHEASTERN LINCOLN COUNTY IS
CANCELLED...

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

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 4 AM CDT.

LAT...LON 3922 9072 3914 9072 3911 9069 3908 9069
      3906 9071 3904 9071 3903 9070 3898 9069
      3899 9094 3920 9093 3923 9079
TIME...MOT...LOC 0403Z 269DEG 50KT 3904 9073

$$

BRITT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 7:09 PM CDT	Severe Thunderstorm Warning	LSX	Knox, Shelby	51 min
May 13, 7:34 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Shelby	41 min
May 13, 7:35 PM CDT	Tornado Warning	LSX	Lewis	55 min
May 13, 8:07 PM CDT	Severe Thunderstorm Warning	LSX	Marion	38 min
May 13, 8:17 PM CDT	Areal Flood Advisory	LSX	Lewis	3 hr
May 13, 8:34 PM CDT	Severe Thunderstorm Warning	LSX	Lewis	26 min
May 13, 9:37 PM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Montgomery, Pike	38 min
May 13, 9:48 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Callaway, Montgomery	27 min
May 13, 10:11 PM CDT	Severe Thunderstorm Warning	LSX	Callaway, Cole, Gasconade, Montgomery, Osage, Warren	34 min
May 13, 10:35 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Gasconade, Montgomery, Osage, Saint Charles, Warren	40 min
May 14, 12:23 AM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Saint Louis	52 min
May 14, 12:44 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Iron, Reynolds, Saint Francois, Washington	46 min
May 14, 12:50 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Reynolds	55 min
May 14, 12:59 AM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois	46 min
May 14, 1:24 AM CDT	Severe Thunderstorm Warning	LSX	Iron, Madison, Saint Francois	51 min
May 14, 1:44 AM CDT	Tornado Warning	LSX	Sainte Genevieve, Saint Francois	31 min
May 14, 2:23 AM CDT	Flash Flood Warning	LSX	Sainte Genevieve, Saint Francois	4 hr
May 14, 5:20 AM CDT	River Flood Warning	LSX	Lewis	6 days
May 14, 5:20 AM CDT	River Flood Warning	LSX	Lewis	5 days
May 14, 3:51 PM CDT	Flash Flood Watch	LSX	Audrain, Boone, Callaway, Cole, Franklin, Gasconade and 16 more	32 hr

Nearby

Tornado Warnings in Missouri, 2009 Every tornado warning in 2009 Tornadoes in 2009

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.