Alert archive / Illinois / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 147, NWS St. Louis, MO

May 30, 2004Fayette County, Montgomery County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 30, 2004, 4:44 PM CDT for Fayette County, Montgomery County, Illinois. It was in force for 46 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 30, 2004, 4:44 PM CDT (21:44 UTC)
Expired
May 30, 2004, 5:30 PM CDT
In force
46 min
Issued by
NWS St. Louis, MO
Area
Counties, with a storm outline in the text

Counties Fayette County, IL, Montgomery County, IL

The radar

The Lincoln radar (KILX), 119 km from the middle of the area, began a volume at 21:46 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
May 30, 5:15 PM CDTTSTM WND GST 60Hazelwood, 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.

IssuedProductOfficeLasted
May 30, 1:05 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 9.7 hours before the alert went out and 128 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 2004-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1629 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2004-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 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
1629 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
569 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
1.4
Supercell composite
8.9

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KLSX 302144
SVRLSX
ILC051-135-302230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
443 PM CDT SUN MAY 30 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN FAYETTE COUNTY IN SOUTH CENTRAL ILLINOIS
  SOUTHEASTERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS

* UNTIL 530 PM CDT

* AT 443 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER VAN BURENSBURG...MOVING NORTHEAST AT 35   
  MPH.  PENNY SIZED HAIL HAS BEEN REPORTED WITH THIS STORM AT 
  DONNELLSON AT 441 PM.  

* LOCATIONS IMPACTED INCLUDE...
  RAMSEY
  WRIGHTS CORNER

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO
AREAS WHERE WATER COVERS THE ROAD.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

LAT...LON 3911 8944 3893 8928 3896 8882 3920 8883
          3924 8926

$$

TRUETT/GKS

The office that day

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

IssuedProductOfficeCountiesLasted
May 30, 3:27 PM CDTTornado WarningLSXAdams48 min
May 30, 4:04 PM CDTSevere Thunderstorm WarningLSXBond, Madison, Montgomery41 min
May 30, 4:06 PM CDTSevere Thunderstorm WarningLSXBrown39 min
May 30, 4:09 PM CDTSevere Thunderstorm WarningLSXClinton, Saint Clair51 min
May 30, 4:13 PM CDTTornado WarningLSXBond, Madison, Montgomery47 min
May 30, 4:20 PM CDTTornado WarningLSXBond, Clinton, Madison, Saint Clair40 min
May 30, 4:32 PM CDTSevere Thunderstorm WarningLSXMonroe28 min
May 30, 4:47 PM CDTTornado WarningLSXBrown28 min
May 30, 4:48 PM CDTTornado WarningLSXFayette, Montgomery42 min
May 30, 4:51 PM CDTTornado WarningLSXMonroe39 min
May 30, 4:55 PM CDTTornado WarningLSXBond, Clinton, Fayette, Marion50 min
May 30, 5:09 PM CDTSevere Thunderstorm WarningLSXMadison36 min
May 30, 5:19 PM CDTSevere Thunderstorm WarningLSXSaint Clair41 min
May 30, 5:44 PM CDTTornado WarningLSXFayette31 min
May 30, 5:50 PM CDTSevere Thunderstorm WarningLSXMacoupin, Montgomery25 min
May 30, 6:14 PM CDTTornado WarningLSXWashington46 min
May 30, 6:36 PM CDTTornado WarningLSXMarion39 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2004Every severe thunderstorm warning in 2004

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.