Alert archive / Illinois / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 103, NWS St. Louis, MO

May 27, 2004Bond County, Madison County, Montgomery County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 27, 2004, 3:48 PM CDT for Bond County, Madison County, Montgomery County, Illinois. It was in force for 57 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: May 27, 2004, 3:48 PM CDT (20:48 UTC)
Expired: May 27, 2004, 4:45 PM CDT
In force: 57 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

Counties Bond County, IL, Madison County, IL, Montgomery County, IL

The radar

The St Louis radar (KLSX), 87 km from the middle of the area, began a volume at 20:49 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
May 27, 2:25 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.8 hours before the alert went out and 165 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: 577 J/kg
Mixed-layer CIN: -123 J/kg
Mixed-layer LCL: 465 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 147 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

534 
WUUS53 KLSX 272048
SVRLSX
ILC005-119-135-272145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
348 PM CDT THU MAY 27 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BOND COUNTY IN SOUTH CENTRAL ILLINOIS
  SOUTHERN MONTGOMERY COUNTY IN SOUTH CENTRAL ILLINOIS
  NORTHERN MADISON COUNTY IN SOUTHWEST ILLINOIS

* UNTIL 445 PM CDT

* AT 348 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LIVINGSTON...MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  SORENTO
  RENO
  GREENVILLE
  WOBURN
  COFFEEN
  VAN BURENSBURG

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.

LAT...LON 3880 9007 3900 9007 3899 8970 3908 8969
          3915 8927 3884 8926

$$

TES

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 7:01 PM CDT	Tornado Warning	LSX	Monroe, Saint Clair	44 min
May 26, 7:14 PM CDT	Severe Thunderstorm Warning	LSX	Clinton, Saint Clair	61 min
May 26, 7:41 PM CDT	Tornado Warning	LSX	Monroe, Saint Clair	34 min
May 26, 7:55 PM CDT	Severe Thunderstorm Warning	LSX	Marion	65 min
May 26, 7:57 PM CDT	Tornado Warning	LSX	Randolph, Washington	33 min
May 27, 3:23 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Pike	52 min
May 27, 3:53 PM CDT	Severe Thunderstorm Warning	LSX	Greene	52 min
May 27, 4:13 PM CDT	Severe Thunderstorm Warning	LSX	Fayette	47 min
May 27, 4:15 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin	45 min
May 27, 4:40 PM CDT	Severe Thunderstorm Warning	LSX	Jersey	35 min
May 27, 4:49 PM CDT	Severe Thunderstorm Warning	LSX	Montgomery	41 min
May 27, 5:12 PM CDT	Flash Flood Warning	LSX	Bond, Fayette, Macoupin, Madison, Montgomery	5 hr
May 27, 5:13 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey	47 min
May 27, 5:44 PM CDT	Flash Flood Warning	LSX	Calhoun, Greene, Pike	4 hr
May 27, 5:53 PM CDT	Severe Thunderstorm Warning	LSX	Greene	52 min
May 27, 6:54 PM CDT	Flash Flood Warning	LSX	Jersey	4 hr
May 27, 6:55 PM CDT	Severe Thunderstorm Warning	LSX	Madison	50 min

Nearby

Severe Thunderstorm Warnings in Illinois, 2004 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.