Alert archive / Illinois / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 93, NWS St. Louis, MO

May 8, 2003Adams County, Brown County, Pike County, Illinois

NWS St. Louis, MO issued this severe thunderstorm warning at May 8, 2003, 8:49 PM CDT for Adams County, Brown County, Pike County, Illinois. It was in force for 26 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 8, 2003, 8:49 PM CDT (01:49 UTC)
Expired: May 8, 2003, 9:15 PM CDT
In force: 26 min
Issued by: NWS St. Louis, MO
Area: Counties, with a storm outline in the text

Counties Adams County, IL, Brown County, IL, Pike County, IL

The radar

The St Louis radar (KLSX), 134 km from the middle of the area, began a volume at 01:52 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 8, 3:40 PM CDT	Tornado Watch	SPC	5 hr
May 8, 7:55 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 1.8 hours before the alert went out and 196 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: 1197 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 213 m²/s²
0-3 km storm-relative helicity: 483 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.

494 
WUUS53 KLSX 090149
SVRLSX
ILC001-009-149-090215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
848 PM CDT THU MAY 8 2003

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN ADAMS COUNTY IN WEST CENTRAL ILLINOIS
  BROWN COUNTY IN WEST CENTRAL ILLINOIS
  NORTHERN PIKE COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 915 PM CDT

* AT 848 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER BEVERLY...MOVING NORTHEAST AT 55 MPH. THE
  PRIMARY THREAT FROM THIS STORM WILL BE DAMAGING HAIL.

* LOCATIONS IMPACTED INCLUDE...
  BEVERLY
  BUCKHORN
  VERSAILLES
  MOUNT STERLING
  COOPERSTOWN

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 3983 9116 3968 9104 3985 9058 4002 9062
          4011 9092

$$

CARNEY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 8, 8:21 PM CDT	Severe Thunderstorm Warning	LSX	Adams	39 min
May 8, 10:21 PM CDT	Severe Thunderstorm Warning	LSX	Calhoun, Greene, Jersey	39 min
May 9, 5:08 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	22 min
May 9, 5:43 PM CDT	Severe Thunderstorm Warning	LSX	Randolph	32 min
May 9, 5:56 PM CDT	Severe Thunderstorm Warning	LSX	Greene	49 min
May 9, 6:01 PM CDT	Severe Thunderstorm Warning	LSX	Washington	44 min
May 9, 6:42 PM CDT	Severe Thunderstorm Warning	LSX	Marion	18 min
May 9, 6:42 PM CDT	Tornado Warning	LSX	Calhoun, Pike	48 min
May 9, 6:45 PM CDT	Severe Thunderstorm Warning	LSX	Greene	30 min
May 9, 6:52 PM CDT	Severe Thunderstorm Warning	LSX	Macoupin	38 min
May 9, 6:56 PM CDT	Tornado Warning	LSX	Greene, Macoupin	49 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.