Alert archive / Illinois / Tornado Warnings in 2004

Tornado Warning 17, NWS St. Louis, MO

May 26, 2004Monroe County, Saint Clair County, Illinois

NWS St. Louis, MO issued this tornado warning at May 26, 2004, 7:41 PM CDT for Monroe County, Saint Clair County, Illinois. It was in force for 34 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 26, 2004, 7:41 PM CDT (00:41 UTC)
Expired: May 26, 2004, 8:15 PM CDT
In force: 34 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

Counties Monroe County, IL, Saint Clair County, IL

The radar

The St Louis radar (KLSX), 74 km from the middle of the area, began a volume at 00:42 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 26, 1:10 PM CDT	Tornado Watch	SPC	8 hr
May 26, 5:35 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 0.7 hours before the alert went out and 228 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1412 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: -75 m²/s²
0-3 km storm-relative helicity: 67 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.

000 
WFUS53 KLSX 270044
TORLSX
MOC187-270145-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
741 PM CDT WED MAY 26 2004

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* TORNADO WARNING FOR...
  ST. FRANCOIS COUNTY IN SOUTHEAST MISSOURI

* UNTIL 845 PM CDT

* AT 741 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM WITH STRONG ROTATION 5 MILES WEST OF         
  POTOSI. THE STORM WAS MOVING SOUTHEAST AT 45 MPH...AND MAY
  PRODUCE A TORNADO AT ANY TIME

* LOCATIONS IMPACTED INCLUDE...
  FRANKCLAY  
  LEADWOOD
  BONNE TERRE
  PARK HILLS
  DESLOGE
  LEADINGTON
  FARMINGTON
  LIBERTYVILLE
  TIMBERLINE CREEK 

THIS STORM IS WILL ALSO PRODUCE LARGE DESTRUCTIVE AND DAMAGING WINDS.

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.

IF YOU LIVE IN A MOBILE HOME OR TRAILER...ABANDON IT IMMEDIATELY AND
SEEK SHELTER IN A MORE SUBSTANTIAL SHELTER.

LAT...LON 3799 9064 3766 9063 3765 9019 3789 9048
          3799 9035 3803 9047

$$
RP/JP

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, 7:55 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, 3:48 PM CDT	Severe Thunderstorm Warning	LSX	Bond, Madison, Montgomery	57 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

Tornado Warnings in Illinois, 2004 Every tornado warning in 2004 Tornadoes 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.