Alert archive / Illinois / Tornado Warnings in 1996

Tornado Warning 29, NWS Lincoln, IL

May 9, 1996Knox County, Illinois

NWS Lincoln, IL issued this tornado warning at May 9, 1996, 9:23 PM CDT for Knox County, Illinois. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 9, 1996, 9:23 PM CDT (02:23 UTC)
Expired: May 9, 1996, 10:15 PM CDT
In force: 52 min
Issued by: NWS Lincoln, IL
Area: Whole counties

County Knox County, IL

The radar

The Quad Cities radar (KDVN), 82 km from the middle of the area, began a volume at 02:25 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 nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 2.4 hours before the alert went out and 80 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: 552 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 696 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: -495 m²/s²
Significant tornado parameter: -0.2
Supercell composite: -2.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KSPI 100224
TORSPI
ILC095-100315-
 
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
923 PM CDT THU MAY 9 1996
 
THE NATIONAL WEATHER SERVICE IN LINCOLN HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1015 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL ILLINOIS
 
   ...KNOX COUNTY
 
AT 925 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE
OF SEVERE THUNDERSTORMS FROM 5 MILES NORTH OF GALESBURG TO 10 MILES WEST
OF GALESBURG. THESE STORMS HAVE PRODUCED A TORNADO IN NORTHWEST KNOX
COUNTY JUST WEST OF ONTARIO AND THE SOUTH EDGE OF GALESBURG.
 
THESE STORMS WERE MOVING EAST AT 30 MPH. SOME TOWNS IN THE PATH OF THESE
STORMS ARE GALESBURG...KNOXVILLE...ONEIDA AND VICTORIA.
 
TAKE COVER IMMEDIATELY IN A BASEMENT OR INTERIOR ROOM ON THE
LOWEST FLOOR. ABANDON MOBILE HOMES AND VEHICLES FOR SAFER SHELTER.
ACT NOW TO SAVE YOUR LIFE!
$$
 
MILLER
 
&

The office that day

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

Issued	Product	Office	Counties	Lasted
May 9, 8:45 PM CDT	Tornado Warning	ILX	Knox	45 min
May 9, 9:52 PM CDT	Tornado Warning	ILX	Peoria, Stark	53 min
May 10, 2:46 AM CDT	Severe Thunderstorm Warning	ILX	Knox	44 min
May 10, 4:38 AM CDT	Severe Thunderstorm Warning	ILX	Logan, Menard	32 min
May 10, 7:30 AM CDT	Severe Thunderstorm Warning	ILX	Shelby	30 min
May 10, 7:47 AM CDT	Severe Thunderstorm Warning	ILX	Moultrie	43 min
May 10, 11:27 AM CDT	Flash Flood Warning	ILX	Moultrie, Shelby	3 hr
May 10, 12:15 PM CDT	Flash Flood Warning	ILX	Douglas, Vermilion	6 hr

Nearby

Tornado Warnings in Illinois, 1996 Every tornado warning in 1996 Tornadoes in 1996

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.