Alert archive / Illinois / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 63, NWS Lincoln, IL

July 19, 1994Champaign County, Illinois

NWS Lincoln, IL issued this severe thunderstorm warning at Jul 19, 1994, 9:48 AM CDT for Champaign County, Illinois. It was in force for 27 min.

The area

The counties it named.

The facts

Issued
Jul 19, 1994, 9:48 AM CDT (14:48 UTC)
Expired
Jul 19, 1994, 10:15 AM CDT
In force
27 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Champaign County, IL

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 2.8 hours before the alert went out and 342 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-pSkew-T log-p diagram, Dayton/James M C, OH at 12:00Z on 1994-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dayton/James M C, OH at 12:00Z on 1994-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1528 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
92 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.

000 
TTAA00 KSPI 191450 RRA
SVRSPI
ILC147-019-041-139-191515-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SPRINGFIELD IL
948 AM CDT TUE JUL 19 1994
 
THE NATIONAL WEATHER SERVICE IN SPRINGFIELD HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1015 AM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL ILLINOIS
 
   ...EASTERN PIATT COUNTY
 
IN EAST CENTRAL ILLINOIS
 
   ...WESTERN CHAMPAIGN COUNTY...WESTERN DOUGLAS COUNTY
   ...NORTHERN MOULTRIE COUNTY
 
WEATHER RADAR AT 945 AM INDICATED A LINE OF SEVERE THUNDERSTORMS 15
MILES SOUTHWEST OF CHAMPAIGN NEAR MONTICELLO TO 12 MILES SOUTH OF
DECATUR. THE LINE OF SEVERE STORMS WAS MOVING TO THE EAST AT 40 MPH.
 
THE STORMS SHOULD MOVE THROUGH THE FOLLOWING
TOWNS...MONTICELLO...CHAMPAIGN...TOLONO...LOVINGTON AND TUSCOLA.
 
 
TAKE SHELTER IN A SUBSTANTIAL BUILDING.  STAY AWAY FROM WINDOWS.
LIGHTNING KILLS...SO STAY OFF OF TELEPHONES. REMEMBER...A SEVERE*
THUNDERSTORM MAY PRODUCE A TORNADO AT ANY TIME.
 
SKIPPER

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, Jul 19, 8:22 AM CDT, 1 hour 26 minutes before
ILZ042>048-050>057-059>063-191425-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
822 AM CDT TUE JUL 19 1994

...STRONG THUNDERSTORMS CONTINUE NORTH OF SPRINGFIELD AND DECATUR...

WEATHER RADAR AT 813 AM CDT...INDICATED A CLUSTER OF INTENSE
THUNDERSTORMS OVER NORTHEAST MENARD..NORTHERN LOGAN AND DEWITT COUNTIES.
THE STRONGEST STORMS WERE 20 MILES NORTH OF SPRINGFIELD NEAR MIDDLETOWN
...25 MILES NORTH OF SPRINGFIELD NEAR NEW HOLLAND...AND 40 MILES
NORTHEAST OF SPRINGFIELD NEAR CLINTON.

THE STORMS WERE MOVING SOUTHEAST AT 25 MPH.  EXPECT WIND GUST TO 50 MPH
AND SMALL HAIL TO 1/2 INCH DIAMETER WITH THESE STORMS.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

SKIPPER
Special weather statement, Jul 19, 8:23 AM CDT, 1 hour 25 minutes before
ILZ042>048-050>057-059>063-191425-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
822 AM CDT TUE JUL 19 1994

...STRONG THUNDERSTORMS CONTINUE NORTH OF SPRINGFIELD AND DECATUR...

WEATHER RADAR AT 813 AM CDT...INDICATED A CLUSTER OF INTENSE
THUNDERSTORMS OVER NORTHEAST MENARD..NORTHERN LOGAN AND DEWITT COUNTIES.
THE STRONGEST STORMS WERE 20 MILES NORTH OF SPRINGFIELD NEAR MIDDLETOWN
...25 MILES NORTH OF SPRINGFIELD NEAR NEW HOLLAND...AND 40 MILES
NORTHEAST OF SPRINGFIELD NEAR CLINTON.

THE STORMS WERE MOVING SOUTHEAST AT 25 MPH.  EXPECT WIND GUST TO 50 MPH
AND SMALL HAIL TO 1/2 INCH DIAMETER WITH THESE STORMS.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

SKIPPER
Special weather statement, Jul 19, 8:36 AM CDT, 1 hour 12 minutes before
ILZ042>048-050>057-059>063-191440-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
836 AM CDT TUE JUL 19 1994

...STRONG THUNDERSTORMS HAVE MOVED OVER SANGAMON CONUNDY...

WEATHER RADAR AT 832 AM CDT INDICATED INTENSE THUNDERSTORMS 5 MILES
NORTH OF SPRINGFIELD NEAR SHERMAN.  THE STORMS WERE MOVING SOUTHEAST
AT 25 MPH.  THE STORMS ARE EXPECTED TO MOVE ACROSS NORTHEAST PORTIONS
OF SPRINGFIELD AS WELL AS DAWSON AND BUFFALO BY 915 AM.

THE STORMS WILL PRODUCE WINDS TO 50 MPH AND 1/2 INCH HAIL AS THE STORMS
MOVE SOUTHEAST.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

SKIPPER
Special weather statement, Jul 19, 8:37 AM CDT, 1 hour 11 minutes before
ILZ042>048-050>057-059>063-191440-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
836 AM CDT TUE JUL 19 1994

...STRONG THUNDERSTORMS HAVE MOVED OVER SANGAMON CONUNDY...

WEATHER RAD
Special weather statement, Jul 19, 9:14 AM CDT, 34 minutes before
ILZ042-043-047-048-050>053-059>061-191515-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
914 AM CDT TUE JUL 19 1994

...INTENSE THUNDERSTORMS WERE AROUND THE SPRINGFIELD AREA...

WEATHER RADAR AT 912 AM SHOWED AN INTENSE CLUSTER OF STORMS AROUND THE
SPRINGFIELD AREA.  THE STRONGEST STORMS WERE LOCATED 5 MILES EAST OF
SPRINGFIELD NEAR RIVERTON...OVER THE SOUTHERN SECTIONS OF SPRINGFIELD
AND 10 MILES WEST OF SPRINGFIELD NEAR FARMINGDALE.

THE STORMS WERE MOVING SOUTH AT 25 MPH AND HAVE DECREASED SLIGHTLY IN
INTENSITY SINCE 845 AM.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

STRONG GUSTY WINDS TO 45 MPH ..FREQUENT LIGHTNING...VERY HEAVY RAINFALL
AND SMALL HAIL MAY ACCOMPANY THE STRONGER STORMS.

SKIPPER
Special weather statement, Jul 19, 9:15 AM CDT, 33 minutes before
ILZ042-043-047-048-050>053-059>061-191515-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SPRINGFIELD IL
914 AM CDT TUE JUL 19 1994

...INTENSE THUNDERSTORMS WERE AROUND THE SPRINGFIELD AREA...

WEATHER RADAR AT 912 AM SHOWED AN INTENSE CLUSTER OF STORMS AROUND THE
SPRINGFIELD AREA.  THE STRONGEST STORMS WERE LOCATED 5 MILES EAST OF
SPRINGFIELD NEAR RIVERTON...OVER THE SOUTHERN SECTIONS OF SPRINGFIELD
AND 10 MILES WEST OF SPRINGFIELD NEAR FARMINGDALE.

THE STORMS WERE MOVING SOUTH AT 25 MPH AND HAVE DECREASED SLIGHTLY IN
INTENSITY SINCE 845 AM.

IF YOU ARE OUTDOORS...MOVE TO A PLACE OF SHELTER IMMEDIATELY IF A
STORM APPROACHES.  MOTORISTS SHOULD REMAIN ALERT FOR REDUCED
VISIBILITIES DURING DOWNPOURS OF RAIN.  STREETS MAY FLOOD QUICKLY.

STRONG GUSTY WINDS TO 45 MPH ..FREQUENT LIGHTNING...VERY HEAVY RAINFALL
AND SMALL HAIL MAY ACCOMPANY THE STRONGER STORMS.

SKIPPER

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 6:36 AM CDTSevere Thunderstorm WarningILXFulton, Knox69 min
Jul 19, 9:48 AM CDTSevere Thunderstorm WarningILXDouglas, Moultrie, Piatt27 min
Jul 19, 4:18 PM CDTSevere Thunderstorm WarningILXLee, Ogle42 min

Nearby

Severe Thunderstorm Warnings in Illinois, 1994Every severe thunderstorm warning in 1994

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.