Alert archive / Illinois / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 106, NWS Lincoln, IL

July 1, 1993Morgan County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 1, 1993, 12:18 AM CDT for Morgan County, Illinois. It was in force for 42 min.

The area

The counties it named.

The facts

Issued: Jul 1, 1993, 12:18 AM CDT (05:18 UTC)
Expired: Jul 1, 1993, 1:00 AM CDT
In force: 42 min
Issued by: NWS Lincoln, IL
Area: Whole counties

County Morgan County, IL

The nearest sounding before it

Paducah/Barkley, KY (KPAH), launched 00:00Z, 5.3 hours before the alert went out and 322 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: 3576 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1074 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 50 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 7.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jun 30, 10:51 PM CDT, 1 hour 27 minutes before

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Special weather statement, Jun 30, 10:57 PM CDT, 1 hour 21 minutes before

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Special weather statement, Jun 30, 11:01 PM CDT, 1 hour 17 minutes before

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Special weather statement, Jun 30, 11:10 PM CDT, 1 hour 8 minutes before

ILZ006-009-0100515

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1110 PM CDT WED JUN 30 1993

...SEVERE THUNDERSTORMS POSSIBLE IN PARTS OF WEST CENTRAL ILLINOIS...

A SEVERE THUNDERSTORM WATCH HAS BEEN POSTED FOR PARTS OF WESTERN AND
CENTRAL ILLINOIS ALONG AND SOUTH OF A LINE FROM 20 MILES NORTH OF
QUINCY TO 40 MILES NORTHEAST OF SPRINGFIELD. THIS INCLUDES SCHUYLER
AND MASON COUNTIES IN WEST CENTRAL ILLINOIS.

AT 1105 PM... STRONG THUNDERSTORMS WERE NEAR QUINCY AND SUTTER... 20 MILES
NORTH OF QUINCY IN HANCOCK COUNTY. THESE STORMS WERE MOVING SLIGHTLY SOUTH OF
EAST AT 25 MPH. THE STORM NEAR QUINCY...WHICH WAS THE MOST INTENSE WILL NOT
AFFECT SCHUYLER OR MASON COUNTY HOWEVER CONDITIONS REMAIN FAVORABLE FOR SEVERE
THUNDERSTORM DEVELOPMENT.

DAMAGING WINDS...VERY HEAVY RAIN AND DEADLY LIGHTNING ARE POSSIBLE WITH THESE
STORMS.

MOGGED

Special weather statement, Jun 30, 11:18 PM CDT, 1 hour before

ILZ006-009-0100515

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEORIA IL
1110 PM CDT WED JUN 30 1993

...SEVERE THUNDERSTORMS POSSIBLE IN PARTS OF WEST CENTRAL ILLINOIS...

A SEVERE THUNDERSTORM WATCH HAS BEEN POSTED FOR PARTS OF WESTERN AND
CENTRAL ILLINOIS ALONG AND SOUTH OF A LINE FROM 20 MILES NORTH OF
QUINCY TO 40 MILES NORTHEAST OF SPRINGFIELD. THIS INCLUDES SCHUYLER
AND MASON COUNTIES IN WEST CENTRAL ILLINOIS.

AT 1105 PM... STRONG THUNDERSTORMS WERE NEAR QUINCY AND SUTTER... 20 MILES
NORTH OF QUINCY IN HANCOCK COUNTY. THESE STORMS WERE MOVING SLIGHTLY SOUTH OF
EAST AT 25 MPH. THE STORM NEAR QUINCY...WHICH WAS THE MOST INTENSE WILL NOT
AFFECT SCHUYLER OR MASON COUNTY HOWEVER CONDITIONS REMAIN FAVORABLE FOR SEVERE
THUNDERSTORM DEVELOPMENT.

DAMAGING WINDS...VERY HEAVY RAIN AND DEADLY LIGHTNING ARE POSSIBLE WITH THESE
STORMS.

MOGGED

Special weather statement, Jun 30, 11:45 PM CDT, 33 minutes before

ILZ009-010545-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
1146 PM CDT WED JUN 30 1993

...SEVERE THUNDERSTORM WATCH UNTIL 3 AM CDT...
...FLASH FLOOD WATCH TONIGHT...

AT 1145 PM CDT...THE LEADING EDGE OF A LARGE AREA OF SHOWERS AND
THUNDERSTORMS WAS MOVING INTO CENTRAL ILLINOIS...AND EXTENDED FROM 40
MILES NORTH OF PEORIA...TO 25 MILES NORTHWEST OF SPRINGFIELD...TO 45
MILES SOUTHWEST OF SPRINGFIELD.

SEVERAL STRONG THUNDERSTORMS WERE DETETCTED OVER WEST CENTRAL ILLINOIS
...WEST OF A LINE FROM ABOUT 30 MILES NORTH OF QUINCY...TO 45 MILES
SOUTHEAST OF QUINCY.  THE STORMS AND SHOWERS WERE MOVING EAST AT
ABOUT 25 MPH.

STRONG THUNDERSTORMS SHOULD MOVE INTO WESTERN CASS AND MORGAN COUNTIES
IN CENTRAL ILLINOIS BETWEEN 1200 AND 1230 AM.  IN ADDITION TO DEADLY
LIGHTNING...VERY HEAVY RAIN...STRONG GUSTY WINDS AND POSSIBLY SOME
SMALL HAIL SHOULD BE EXPECTED WITH THESE STORMS.

THESE STORMS COULD BECOME SEVERE.  STAY TUNED TO YOUR FAVORITE
WEATHER INFORMATION SOURCE FOR ADDITIONAL STATEMENTS AND POSSIBLE
WARNINGS.  BE PREPARED TO TAKE COVER IF SEVERE WEATHER DEVELOPS.

MCCOY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 12:36 AM CDT	Severe Thunderstorm Warning	ILX	Cass	69 min
Jul 1, 1:49 AM CDT	Flash Flood Warning	ILX	Fulton, Mason, Schuyler	4 hr

Nearby

Severe Thunderstorm Warnings in Illinois, 1993 Every severe thunderstorm warning in 1993

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.