Alert archive / Illinois / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 112, NWS Lincoln, IL

June 4, 2002Knox County, Stark County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jun 4, 2002, 2:24 PM CDT for Knox County, Stark County, Illinois. It was in force for 51 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: Jun 4, 2002, 2:24 PM CDT (19:24 UTC)
Expired: Jun 4, 2002, 3:15 PM CDT
In force: 51 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

Counties Knox County, IL, Stark County, IL

The radar

The Quad Cities radar (KDVN), 84 km from the middle of the area, began a volume at 19:26 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

Time	Report	Where	Remark
Jun 4, 2:30 PM CDT	Thunderstorm Wind 50 E	Toulon, IL	Several large trees were blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 7.4 hours before the alert went out and 81 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: 223 J/kg
Mixed-layer CIN: -151 J/kg
Mixed-layer LCL: 672 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 316 m²/s²
0-3 km storm-relative helicity: 310 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

822 
WUUS53 KILX 041924
SVRSPI
ILC095-175-042015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
224 PM CDT TUE JUN 4 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  STARK COUNTY IN NORTH CENTRAL ILLINOIS
  KNOX COUNTY IN WEST CENTRAL ILLINOIS

* UNTIL 315 PM CDT

* AT 224 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM ELMIRA TO ABINGDON...OR FROM 7
  MILES SOUTH OF KEWANEE TO 11 MILES SOUTH OF GALESBURG...MOVING EAST
  AT 20 MPH.

* THE SEVERE THUNDERSTORMS WILL BE NEAR...
  TOULON
  WEST JERSEY
  WILLIAMSFIELD
  WYOMING
  MAQUON
  CASTLETON
  YATES CITY

THIS STORM IS CAPABLE OF PRODUCING WINDS IN EXCESS OF 60 MPH...
DAMAGING HAIL...FREQUENT LIGHTNING...AND VERY HEAVY RAIN. TAKE
SHELTER IN A STURDY BUILDING AND STAY AWAY FROM WINDOWS.

REPORT SEVERE WEATHER OR ANY STORM DAMAGE TO YOUR LOCAL ESDA...OR THE
NEAREST LAW ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER
SERVICE. STAY TUNED FOR LATER STATEMENTS.

LAT...LON 4114 9006 4095 9016 4073 9055 4073 9000
          4098 8998 4099 8965 4122 8968

PLAHMER
NNNN

The office that day

Everything else NWS Lincoln, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 4, 1:53 PM CDT	Severe Thunderstorm Warning	ILX	Marshall	37 min
Jun 4, 2:30 PM CDT	Tornado Warning	ILX	Marshall	30 min
Jun 4, 3:23 PM CDT	Flash Flood Warning	ILX	Knox	7 hr
Jun 4, 4:21 PM CDT	Severe Thunderstorm Warning	ILX	Fulton, Knox, Peoria	54 min
Jun 4, 4:25 PM CDT	Severe Thunderstorm Warning	ILX	Schuyler	65 min
Jun 4, 5:11 PM CDT	Severe Thunderstorm Warning	ILX	Tazewell	64 min
Jun 4, 5:23 PM CDT	Severe Thunderstorm Warning	ILX	Woodford	52 min
Jun 4, 5:32 PM CDT	Severe Thunderstorm Warning	ILX	McLean	58 min
Jun 4, 6:10 PM CDT	Severe Thunderstorm Warning	ILX	Sangamon	80 min
Jun 4, 6:36 PM CDT	Flash Flood Warning	ILX	Morgan, Scott	3 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 2002 Every severe thunderstorm warning in 2002

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.