Alert archive / Missouri / Tornado Warnings in 2009

Tornado Warning 22, NWS St. Louis, MO

May 14, 2009Randolph County, Illinois; Sainte Genevieve County, Saint Francois County, Missouri

NWS St. Louis, MO issued this tornado warning at May 14, 2009, 1:44 AM CDT for Randolph County, Illinois; Sainte Genevieve County, Saint Francois County, Missouri. It was in force for 31 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: May 14, 2009, 1:44 AM CDT (06:44 UTC)
Expired: May 14, 2009, 2:15 AM CDT
In force: 31 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon

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

The radar

The St Louis radar (KLSX), 114 km from the middle of the area, began a volume at 06:48 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
May 14, 1:57 AM CDT	HAIL 0.25	Chester, IL

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
May 13, 9:56 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.7 hours before the alert went out and 283 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 140644
TORLSX
ILC157-MOC186-187-140715-
/O.NEW.KLSX.TO.W.0022.090514T0644Z-090514T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
144 AM CDT THU MAY 14 2009

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN RANDOLPH COUNTY IN SOUTHWEST ILLINOIS...
  SOUTHERN STE. GENEVIEVE COUNTY IN SOUTHEAST MISSOURI...
  ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI...

* UNTIL 215 AM CDT

* AT 143 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE SQUALL LINE CAPABLE OF PRODUCING BRIEF RAIN-WRAPPED   
  TORNADOES IN ADDITION TO STRAIGHT LINE WIND DAMAGE.   THESE 
  DANGEROUS STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6   
  MILES SOUTH OF STE. GENEVIEVE TO FARMINGTON...AND MOVING EAST AT 
  40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CHESTER...COFFMAN...ST. MARY...KASKASKIA...MINNITH AND ROCKWOOD.

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 3774 9039 3796 9011 3793 8961 3790 8962
      3782 8971 3790 8985 3787 8990 3788 8993
      3783 9000 3766 9013
TIME...MOT...LOC 0644Z 255DEG 34KT 3789 9006 3775 9037

$$

TES

2 follow-up statements

000 
WWUS53 KLSX 140658
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
158 AM CDT THU MAY 14 2009

ILC157-MOC186-187-140715-
/O.CON.KLSX.TO.W.0022.000000T0000Z-090514T0715Z/
RANDOLPH IL-ST. FRANCOIS MO-STE. GENEVIEVE MO-
158 AM CDT THU MAY 14 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 AM CDT FOR SOUTHERN
STE. GENEVIEVE...ST. FRANCOIS AND SOUTHEASTERN RANDOLPH COUNTIES...

AT 158 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE SQUALL LINE CAPABLE OF PRODUCING BRIEF RAIN-WRAPPED TORNADOES 
IN ADDITION TO STRAIGHT LINE WIND DAMAGE. THESE TORNADO PRODUCING 
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM CHESTER TO 
COFFMAN...MOVING EAST AT 65 MPH.

LOCATIONS IMPACTED INCLUDE...
  ROCKWOOD.

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 3774 9039 3796 9011 3793 8961 3790 8962
      3782 8971 3790 8985 3787 8990 3788 8993
      3783 9000 3766 9013
TIME...MOT...LOC 0658Z 267DEG 58KT 3791 8982 3777 9012

$$

TES

000 
WWUS53 KLSX 140712
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
212 AM CDT THU MAY 14 2009

ILC157-MOC186-187-140721-
/O.EXP.KLSX.TO.W.0022.000000T0000Z-090514T0715Z/
RANDOLPH IL-ST. FRANCOIS MO-STE. GENEVIEVE MO-
212 AM CDT THU MAY 14 2009

...THE TORNADO WARNING FOR SOUTHERN STE. GENEVIEVE...ST. FRANCOIS AND
SOUTHEASTERN RANDOLPH COUNTIES WILL EXPIRE AT 215 AM CDT...

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

LAT...LON 3774 9039 3796 9011 3793 8961 3790 8962
      3782 8971 3790 8985 3787 8990 3788 8993
      3783 9000 3766 9013
TIME...MOT...LOC 0711Z 267DEG 58KT 3792 8956 3778 8986

$$

TES

The office that day

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

Issued	Product	Office	Counties	Lasted
May 13, 7:35 PM CDT	Tornado Warning	LSX	Adams	55 min
May 13, 8:59 PM CDT	Areal Flood Advisory	LSX	Adams	3 hr
May 13, 9:21 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Brown, Pike	39 min
May 13, 11:57 PM CDT	Severe Thunderstorm Warning	LSX	Fayette, Montgomery	33 min
May 14, 12:17 AM CDT	Severe Thunderstorm Warning	LSX	Bond, Clinton, Madison	43 min
May 14, 12:23 AM CDT	Severe Thunderstorm Warning	LSX	Monroe, Randolph, Saint Clair, Washington	52 min
May 14, 2:23 AM CDT	Flash Flood Warning	LSX	Randolph	4 hr
May 14, 3:51 PM CDT	Flash Flood Watch	LSX	Adams, Bond, Brown, Calhoun, Clinton, Fayette and 10 more	32 hr
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, 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 13, 10:43 PM CDT	Tornado Warning	LSX	Lincoln	20 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, 5:20 AM CDT	River Flood Warning	LSX	Lewis	6 days
May 14, 5:20 AM CDT	River Flood Warning	LSX	Lewis	5 days

Nearby

Tornado Warnings in Missouri, 2009 Tornado Warnings in Illinois, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.