Alert archive / Illinois / Tornado Warnings in 2009

Tornado Warning 7, NWS St. Louis, MO

March 8, 2009Greene County, Macoupin County, Illinois

NWS St. Louis, MO issued this tornado warning at Mar 8, 2009, 11:17 AM CDT for Greene County, Macoupin County, Illinois. It was in force for 13 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
Mar 8, 2009, 11:17 AM CDT (16:17 UTC)
Expired
Mar 8, 2009, 11:30 AM CDT
In force
13 min
Issued by
NWS St. Louis, MO
Area
Storm-based polygon

Counties Greene County, IL, Macoupin County, IL

The radar

The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 16:17 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

TimeReportWhereRemark
Mar 8, 11:20 AM CDTTSTM WND DMG3 Nnw Athensville, ILA CHURCH DESTROYED AND A FARM HOUSE DAMAGED

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.

IssuedProductOfficeLasted
Mar 8, 6:32 AM CDTTornado WatchSPC7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 4.3 hours before the alert went out and 151 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 12:00Z on 2009-03-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2009-03-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 389 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
441 m above ground
0-6 km bulk shear
78 kt
0-1 km storm-relative helicity
389 m²/s²
0-3 km storm-relative helicity
401 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KLSX 081617
TORLSX
ILC061-117-081630-
/O.NEW.KLSX.TO.W.0007.090308T1617Z-090308T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1117 AM CDT SUN MAR 8 2009

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN GREENE COUNTY IN SOUTHWEST ILLINOIS
  NORTHWESTERN MACOUPIN COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 1130 AM CDT

* AT 1112 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION NEAR ATHENSVILLE...OR
  ABOUT 11 MILES EAST OF WHITE HALL...MOVING EAST AT 65 MPH.

* LOCATIONS IMPACTED INCLUDE...
 ATHENSVILLE

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.

LAT...LON 3941 9019 3953 9029 3953 9012 3953 8988
TIME...MOT...LOC 1618Z 248DEG 56KT 3952 9009

$$

CARNEY
1 follow-up statement
000 
WWUS53 KLSX 081630
SVSLSX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ST LOUIS MO
1130 AM CDT SUN MAR 8 2009

ILC061-117-081641-
/O.EXP.KLSX.TO.W.0007.000000T0000Z-090308T1630Z/
GREENE IL-MACOUPIN IL-
1131 AM CDT SUN MAR 8 2009

...THE TORNADO WARNING FOR NORTHWESTERN MACOUPIN AND NORTHEASTERN
GREENE COUNTIES EXPIRES AT 1130 AM CDT...

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

ADDITIONAL STRONG THUNDERSTORMS ARE POSSIBLE...AND A TORNADO WATCH 
REMAINS IN EFFECT UNTIL 200 PM.

LAT...LON 3941 9019 3953 9029 3953 9012 3953 8988
TIME...MOT...LOC 1617Z 248DEG 56KT 3951 9010

$$

CARNEY

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 7, 9:54 PM CSTFlash Flood WatchLSXAdams8 hr
Mar 8, 10:51 AM CDTTornado WarningLSXCalhoun, Jersey24 min
Mar 8, 11:06 AM CDTTornado WarningLSXMonroe, Randolph, Saint Clair39 min
Mar 8, 11:16 AM CDTSevere Thunderstorm WarningLSXGreene, Jersey, Macoupin, Montgomery44 min
Mar 8, 11:32 AM CDTTornado WarningLSXRandolph, Saint Clair, Washington43 min
Mar 8, 12:16 PM CDTWind AdvisoryLSXAdams, Bond, Brown, Calhoun, Clinton, Fayette and 11 more7 hr
Mar 8, 12:33 PM CDTTornado WarningLSXMarion10 min

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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.