Alert archive / Illinois / Tornado Warnings in 2009

Tornado Warning 52, NWS St. Louis, MO

June 19, 2009Marion County, Illinois

NWS St. Louis, MO issued this tornado warning at Jun 19, 2009, 8:14 PM CDT for Marion County, Illinois. It was in force for 31 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
Jun 19, 2009, 8:14 PM CDT (01:14 UTC)
Expired
Jun 19, 2009, 8:45 PM CDT
In force
31 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon

County Marion County, IL

The radar

The Evansville,IN radar (KVWX), 95 km from the middle of the area, began a volume at 01:16 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

Lincoln, IL (KILX), launched 00:00Z, 1.2 hours before the alert went out and 183 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, Lincoln, IL at 00:00Z on 2009-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 440 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, Lincoln, IL at 00:00Z on 2009-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 305 square meters per square second.19395878Sfc1 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
440 J/kg
Mixed-layer CIN
-144 J/kg
Mixed-layer LCL
1136 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
305 m²/s²
0-3 km storm-relative helicity
327 m²/s²
Significant tornado parameter
0.2
Supercell composite
8.4

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 200114
TORLSX
ILC121-200145-
/O.NEW.KLSX.TO.W.0052.090620T0114Z-090620T0145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
814 PM CDT FRI JUN 19 2009

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN MARION COUNTY IN SOUTH CENTRAL ILLINOIS...

* UNTIL 845 PM CDT

* AT 814 PM CDT...LAW ENFORCEMENT REPORTED A FUNNEL CLOUD 9 MILES 
  SOUTH OF SALEM. A TORNADO MAY DEVELOP AT ANY TIME DOPPLER RADAR 
  SHOWED THIS TORNADIC STORM MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  HELM...

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.

THIS IS A SUPERCELL THUNDERSTORM. IN ADDITION TO TORNADOES...
SUPERCELLS ARE CAPABLE OF PRODUCING EXTREMELY LARGE HAIL AND
DESTRUCTIVE STRAIGHT LINE WINDS. ACT QUICKLY AND MOVE TO SAFETY
INSIDE A STURDY SHELTER...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM
ON THE LOWEST FLOOR.

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 3848 8870 3847 8887 3854 8886 3856 8870
TIME...MOT...LOC 0114Z 281DEG 20KT 3850 8889

$$

TILLY
1 follow-up statement
000 
WWUS53 KLSX 200139
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
839 PM CDT FRI JUN 19 2009

ILC121-200149-
/O.EXP.KLSX.TO.W.0052.000000T0000Z-090620T0145Z/
MARION IL-
839 PM CDT FRI JUN 19 2009

...THE TORNADO WARNING FOR SOUTHEASTERN MARION COUNTY WILL EXPIRE AT
845 PM CDT...

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

LAT...LON 3848 8870 3847 8887 3854 8886 3856 8870
TIME...MOT...LOC 0139Z 275DEG 20KT 3848 8871

$$

TILLY

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 7:06 PM CDTTornado WarningLSXBond, Fayette39 min
Jun 19, 7:19 PM CDTTornado WarningLSXFayette, Marion41 min
Jun 19, 7:24 PM CDTSevere Thunderstorm WarningLSXClinton, Marion51 min
Jun 19, 7:27 PM CDTAreal Flood AdvisoryLSXFayette6 hr
Jun 19, 7:40 PM CDTSevere Thunderstorm WarningLSXMarion25 min
Jun 19, 7:55 PM CDTTornado WarningLSXMarion35 min
Jun 19, 7:59 PM CDTSevere Thunderstorm WarningLSXMarion34 min
Jun 19, 8:09 PM CDTSevere Thunderstorm WarningLSXFayette, Montgomery36 min
Jun 19, 8:44 PM CDTSevere Thunderstorm WarningLSXFayette15 min
Jun 20, 12:46 AM CDTSevere Thunderstorm WarningLSXClinton, Marion, Saint Clair, Washington44 min
Jun 20, 2:06 PM CDTExcessive Heat WatchLSXMadison, Saint Clair14 hr
Jun 20, 6:34 PM CDTAreal Flood AdvisoryLSXBond, Montgomery6 hr
Jun 20, 6:53 PM CDTFlash Flood WarningLSXFayette6 hr

Nearby

Tornado Warnings in Illinois, 2009Every tornado warning in 2009Tornadoes 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.