Alert archive / Illinois / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 166, NWS St. Louis, MO

June 10, 2003Randolph County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at Jun 10, 2003, 6:03 PM CDT for Randolph County, Illinois. It was in force for 42 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 10, 2003, 6:03 PM CDT (23:03 UTC)
Expired: Jun 10, 2003, 6:45 PM CDT
In force: 42 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

County Randolph County, IL

The radar

The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 23:05 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
Jun 10, 3:40 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.1 hours before the alert went out and 257 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: 77 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1451 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 63 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.

946 
WUUS53 KLSX 102303
SVRLSX
ILC157-102345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
603 PM CDT TUE JUN 10 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  RANDOLPH COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 645 PM CDT

* AT 603 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 11 MILES NORTHWEST OF RED BUD TO
  22 MILES WEST OF CHESTER...MOVING EAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  RED BUD
  EVANSVILLE
  BALDWIN
  CHESTER
  TILDEN
  STEELEVILLE
  SPARTA
  BREMEN

THIS LINE OF STORMS HAS A HISTORY OF PRODUCING DAMAGING WINDS...AND
HAS DOWNED NUMEROUS TREES AND POWER LINES. TAKE SHELTER IMMEDIATELY
IN THE INTERIOR PORTION OF A STURDY BUILDING. STAY AWAY FROM OUTSIDE
WALLS AND WINDOWS

LAT...LON 3785 8968 3793 8992 3809 9019 3814 9003
          3821 9002 3822 8993 3821 8960

$$

CVKING

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 5:50 PM CDT	Severe Thunderstorm Warning	LSX	Madison	40 min
Jun 10, 5:52 PM CDT	Severe Thunderstorm Warning	LSX	Monroe, Saint Clair	38 min
Jun 10, 6:07 PM CDT	Tornado Warning	LSX	Monroe, Randolph, Saint Clair	38 min
Jun 10, 6:13 PM CDT	Tornado Warning	LSX	Clinton, Saint Clair	47 min
Jun 10, 6:18 PM CDT	Severe Thunderstorm Warning	LSX	Washington	42 min
Jun 10, 6:27 PM CDT	Flash Flood Warning	LSX	Madison, Saint Clair	4 hr
Jun 10, 6:29 PM CDT	Tornado Warning	LSX	Clinton, Marion	46 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2003 Every severe thunderstorm warning in 2003

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.