Alert archive / Illinois / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 150, NWS Lincoln, IL

July 22, 2002Mason County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 22, 2002, 6:25 PM CDT for Mason County, Illinois. It was in force for 65 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: Jul 22, 2002, 6:25 PM CDT (23:25 UTC)
Expired: Jul 22, 2002, 7:30 PM CDT
In force: 65 min
Issued by: NWS Lincoln, IL
Area: Counties, with a storm outline in the text

County Mason County, IL

The radar

The Lincoln radar (KILX), 51 km from the middle of the area, began a volume at 23:27 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
Jul 22, 2:30 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 11.4 hours before the alert went out and 113 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: 821 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1415 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -53 m²/s²
0-3 km storm-relative helicity: -28 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.

962 
WUUS53 KILX 222325
SVRSPI
ILC125-230030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
624 PM CDT MON JUL 22 2002

THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MASON COUNTY IN CENTRAL ILLINOIS

* UNTIL 730 PM CDT

* AT 624 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 26 MILES SOUTHWEST OF EASTON...OR ABOUT 2 MILES
  NORTH OF VIRGINIA...MOVING NORTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  EASTON
  BATH
  HAVANA
  KILBOURN

DAMAGING WINDS IN EXCESS OF 60 MPH WILL ACCOMPANY THIS DANGEROUS
STORM. GO TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. ABANDON CARS AND MOBILE HOMES IF YOU ARE IN THE
WARNED AREA.

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 4015 9014 4023 8969 4031 8975 4041 8989
EH
NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 5:40 PM CDT	Flash Flood Warning	ILX	Champaign, Piatt	3 hr
Jul 22, 5:54 PM CDT	Severe Thunderstorm Warning	ILX	Morgan, Scott	66 min
Jul 22, 5:57 PM CDT	Severe Thunderstorm Warning	ILX	Cass	63 min
Jul 22, 6:31 PM CDT	Severe Thunderstorm Warning	ILX	Champaign, Vermilion	44 min
Jul 22, 6:32 PM CDT	Severe Thunderstorm Warning	ILX	Menard	58 min
Jul 22, 6:48 PM CDT	Severe Thunderstorm Warning	ILX	Logan	57 min
Jul 22, 6:50 PM CDT	Severe Thunderstorm Warning	ILX	DeWitt	40 min
Jul 22, 6:56 PM CDT	Flash Flood Warning	ILX	DeWitt, Logan	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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.