Alert archive / Illinois / Tornado Warnings in 2002

Tornado Warning 27, NWS St. Louis, MO

December 17, 2002Calhoun County, Greene County, Jersey County, Illinois; Lincoln County, Missouri

NWS St. Louis, MO issued this tornado warning at Dec 17, 2002, 11:22 PM CST for Calhoun County, Greene County, Jersey County, Illinois; Lincoln County, Missouri. It was in force for 23 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
Dec 17, 2002, 11:22 PM CST (05:22 UTC)
Expired
Dec 17, 2002, 11:45 PM CST
In force
23 min
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

Counties Calhoun County, IL, Greene County, IL, Jersey County, IL, Lincoln County, MO

The radar

The St Louis radar (KLSX), 55 km from the middle of the area, began a volume at 05:22 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.

IssuedProductOfficeLasted
Dec 17, 10:40 PM CSTTornado WatchSPC5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 5.4 hours before the alert went out and 204 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 2002-12-18Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 2002-12-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 195 square meters per square second.193958Sfc1 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
401 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
195 m²/s²
0-3 km storm-relative helicity
188 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

148 
WFUS53 KLSX 180522
TORSTL
ILC013-061-083-MOC113-180545-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
1121 PM CST TUE DEC 17 2002

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN LINCOLN COUNTY IN EAST CENTRAL MISSOURI
  CENTRAL CALHOUN COUNTY IN SOUTHWEST ILLINOIS
  SOUTHWESTERN GREENE COUNTY IN SOUTHWEST ILLINOIS
  WESTERN JERSEY COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 1145 PM CST

* AT 1121 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  STRONG CIRCULATION NEAR FOLEY. THE STORM WAS MOVING NORTHEAST AT
  40 MPH...AND MAY PRODUCE A TORNADO AT ANY TIME

* LOCATIONS IN THE PATH...
  HARDIN
  NUTWOOD
  HAMBURG
  FIELDON
  MICHAEL
  WOODY
  ELDRED
  OLD KANE
  KANE

IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW MOVE TO A
BASEMENT...UNDERGROUND STORM SHELTER...OR AN INTERIOR ROOM OR HALLWAY
ON THE LOWEST LEVEL OF A STURDY BUILDING.

LAT...LON 3922 9085 3894 9068 3919 9032 3941 9047

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 17, 11:50 PM CSTTornado WarningLSXGreene40 min
Dec 18, 4:47 PM CSTTornado WarningLSXGreene28 min
Dec 17, 9:32 PM CSTSevere Thunderstorm WarningLSX43 min
Dec 17, 9:59 PM CSTSevere Thunderstorm WarningLSX46 min
Dec 17, 10:33 PM CSTTornado WarningLSXPike42 min
Dec 17, 10:57 PM CSTSevere Thunderstorm WarningLSX48 min
Dec 17, 11:12 PM CSTSevere Thunderstorm WarningLSX48 min
Dec 17, 11:32 PM CSTSevere Thunderstorm WarningLSX43 min
Dec 17, 11:45 PM CSTSevere Thunderstorm WarningLSX30 min
Dec 18, 12:22 AM CSTSevere Thunderstorm WarningLSX23 min
Dec 18, 12:38 AM CSTSevere Thunderstorm WarningLSX37 min
Dec 18, 1:13 AM CSTSevere Thunderstorm WarningLSX32 min
Dec 18, 1:46 AM CSTSevere Thunderstorm WarningLSX29 min
Dec 18, 2:03 AM CSTSevere Thunderstorm WarningLSX27 min
Dec 18, 2:10 AM CSTSevere Thunderstorm WarningLSX35 min
Dec 18, 2:31 AM CSTSevere Thunderstorm WarningLSX29 min
Dec 18, 2:50 AM CSTSevere Thunderstorm WarningLSX25 min
Dec 18, 3:06 AM CSTSevere Thunderstorm WarningLSX24 min
Dec 18, 3:18 AM CSTSevere Thunderstorm WarningLSX42 min
Dec 18, 3:57 AM CSTSevere Thunderstorm WarningLSX48 min
Dec 18, 10:18 AM CSTSevere Thunderstorm WarningLSX27 min
Dec 18, 10:25 AM CSTSevere Thunderstorm WarningLSX50 min
Dec 18, 11:07 AM CSTSevere Thunderstorm WarningLSX23 min
Dec 18, 11:20 AM CSTFlash Flood WarningLSXFranklin, Saint Charles, Saint Louis, City of Saint Louis6 hr
Dec 18, 1:00 PM CSTSevere Thunderstorm WarningLSX45 min
Dec 18, 1:27 PM CSTSevere Thunderstorm WarningLSX48 min
Dec 18, 2:16 PM CSTSevere Thunderstorm WarningLSX44 min
Dec 18, 2:47 PM CSTSevere Thunderstorm WarningLSX43 min
Dec 18, 3:15 PM CSTSevere Thunderstorm WarningLSX45 min
Dec 18, 3:31 PM CSTSevere Thunderstorm WarningLSX44 min
Dec 18, 3:45 PM CSTSevere Thunderstorm WarningLSX45 min
Dec 18, 3:49 PM CSTTornado WarningLSXPike26 min
Dec 18, 3:54 PM CSTTornado WarningLSXPike21 min
Dec 18, 4:08 PM CSTSevere Thunderstorm WarningLSX22 min
Dec 18, 4:10 PM CSTSevere Thunderstorm WarningLSX35 min
Dec 18, 4:30 PM CSTSevere Thunderstorm WarningLSX45 min
Dec 18, 4:34 PM CSTTornado WarningLSXFranklin, Gasconade26 min
Dec 18, 4:39 PM CSTTornado WarningLSXFranklin, Gasconade21 min

Nearby

Tornado Warnings in Illinois, 2002Tornado Warnings in Missouri, 2002Every tornado warning in 2002Tornadoes in 2002

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.