Alert archive / Indiana / Tornado Warnings in 1992

Tornado Warning 6, NWS Chicago, IL

July 2, 1992Porter County, Indiana

NWS Chicago, IL issued this tornado warning at Jul 2, 1992, 4:00 PM CDT for Porter County, Indiana. It was in force for 15 min.

The area

The counties it named.

The facts

Issued
Jul 2, 1992, 4:00 PM CDT (21:00 UTC)
Expired
Jul 2, 1992, 4:15 PM CDT
In force
15 min
Issued by
NWS Chicago, IL
Area
Whole counties

County Porter County, IN

The nearest sounding before it

Dayton/James M C, OH (KDAY), launched 12:00Z, 9.0 hours before the alert went out and 301 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 1992-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 321 joules per kilogram.LCLLFCEL10008507005003002001001 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 1992-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -6 square meters per square second.193958Sfc1 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
321 J/kg
Mixed-layer CIN
-33 J/kg
Mixed-layer LCL
849 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-6 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

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 tornado 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 2, 1:04 PM CDT, 2 hours 56 minutes before
ILZ003-005-007-008-INZ001-021930-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
105 PM CDT THU JUL 2 1992

...A TORNADO WATCH IS IN EFFECT FOR NORTHEAST ILLINOIS AND METROPOLITAN
CHICAGO UNTIL 5PM CDT...

AT 1 PM RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS RACING EASTWARD
ACROSS NORTH ILLINOIS AT 50 MPH TOWARD GREATER CHICAGO.  THE LEADING
EDGE WAS 40 MILES WEST OF ROCKFORD SOUTHWARD TO NEAR GALESBURG.

THESE THUNDERSTORMS WILL APPROACH WEST SUBURBS OF CHICAGO BY 2 OR 230 PM
...DUPAGE COUNTY AND JOLIET BY 3 PM...AND DOWNTOWN CHICAGO BY 4 PM CDT.
CONDITIONS FAVOR SEVERE THUNDERSTORMS THAT MAY CAUSE TORNADOES TO FORM.
MANY SEVERE WARNINGS HAVE ALREADY BEEN ISSUED FOR COUNTIES, TO OUR WEST.

POSSIBLE TORNADOS...DAMAGING WINDS IN EXCESS OF 60 MPH...HAIL...BLINDING
RAIN...AND DANGEROUS LIGHTNING ARE EXPECTED AS THESE STORMS APPROACH AND
MOVE ACROSS ILLINOIS THIS AFTERNOON.

SIMPSON
Special weather statement, Jul 2, 2:00 PM CDT, 2 hours before
ILZ001-002-022020-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROCKFORD IL
2 PM CDT THU JUL 2 1992

...TORNADO WATCH FOR NORTHERN ILLINOIS TILL 5 PM...

AT 2 PM CDT...RADAR INDICATED THAT A 20 MILE WIDE LINE OF STRONG
THUNDERSTORMS WAS WEST OF A LINE FROM ROSCOW...IN WINNEBAGO COUNTY
TO ROCHELLE...IN OGLE COUNTY...TO WEST BROOKLYN...IN LEE COUNTY.
FURTHERN WEST...SHOWERS AND THUNDERSTORMS EXTENDED INTO EASTERN
IOWA. THESE STORMS WERE MOVING TO THE EAST AT 55 MPH.

THESE STORMS HAVE A HISTORY OF HEAVY DOWNPOURS...DANGEROUS LIGHTNING...
SMALL HAIL...AND LOCALIZED AREAS OF HEAVY FLOODING.

PEOPLE IN BOONE AND DE KALB COUNTIES CAN EXPECT WINDS OF UP TO 50 MPH
AND SMALL HAIL...DANGEROUS LIGHTNING...AND LOCALIZED HEAVY DOWNPOURS
SHORTLY AFTER 2 PM.
.
ATTN: ISP DIST 1..2..16.

BELL
Special weather statement, Jul 2, 2:51 PM CDT, 1 hour 9 minutes before
ILZ001-002-022015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROCKFORD IL
250 PM CDT THU JUL 2 1992

...TORNADO WATCH TILL 5 PM CDT FOR STEPHENSON/WINNEBAGO/BOONE/
OGLE/LEE COUNTIES...
...TORNADO WATCH TILL 10 PM CDT FOR DE KALB/LASALLE COUNTY...
...WATCHES HAVE BEEN CANCELED FOR JO DAVIESS AND CARROLL COUNTIES...

THIS AFTERNOON AT 245 CDT AREA RADARS WERE SHOWING NUMEROUS THUNDER-
SHOWERS OVER ALL OF NORTH CENTRAL AND PORTIONS OF NORTHWEST ILLINOIS.
THE MORE INTENSE THUNDERSTORMS HAVE MOVED EAST INTO EASTERN PARTS
OF ILLINOIS. ALL THE RAINFALL WAS MOVING EAST AT 50 MPH.

THE REMAINING THUNDERSHOWER ACTIVITY WILL CONTINUE TO PRODUCE PERIODS
OF HEAVY RAIN. THESE RAINS MAY CAUSE LOCAL URBAN FLOODING AND/OR
FLOODING OF LOW LYING AREAS AND SMALL STREAMS.

TORNADO WATCHES REMAIN IN EFFECT FOR ALL OF NORTHERN ILLINOIS WITH THE
EXCEPTION OF JO DAVIESS AND CARROLL COUNTIES. CONDITIONS REMAIN
FAVORABLE FOR THE STORMS TO INTENSIFY BACK TO SEVERE LEVELS. STAY
TUNED TO WEATHER RADIO OR YOUR LOCAL RADIO AND T. V. STATIONS FOR
FURTHER STATEMENTS OR POSSIBLE WARNINGS.
ATTN: ISP 1..2..16
FIELDS
Special weather statement, Jul 2, 3:13 PM CDT, 47 minutes before
ILZ001-002-022345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROCKFORD IL
310 PM CDT THU JUL 2 1992

...TORNADO WATCHES...

THE FOLLOWING IS A SUMMARY OF TORNADO WATCHES CURRENTLY IN EFFECT FOR
NORTHWEST AND NORTH CENTRAL ILLINOIS...

TILL 5PM CDT THE FOLLOWING COUNTIES...STEPHENSON/WINNEBAGO/BOONE/OGLE/
AND LEE...

TILL 10PM CDT THE FOLLOWING COUNTIES...DE KALB AND LASALLE...
ATTN: ISP 1..2..16

FIELDS
EXCEPTION OF JO DAVIESS AND C2ARROLL COUNTIES. CONDITIONS REMAIN
FAVORABLE FOR THE STORMS TO INTENSIFY BACK TO SEVERE LEVELS. STAY
TUNED TO WEATHER RADIO OR YOUR LOCAL RADIO AND T. V. STATIONS FOR
FURTHER STATEMENTS OR POSSIBLE WARNINGS.
ATTN: ISP 1..2..16
FIELDS
Special weather statement, Jul 2, 3:14 PM CDT, 46 minutes before
ILZ001-002-022345-

SPECIAL WEATHER STATEMENT ...CORRECTION TO DELETE LAST PARA...
NATIONAL WEATHER SERVICE ROCKFORD IL
310 PM CDT THU JUL 2 1992

...TORNADO WATCHES...

THE FOLLOWING IS A SUMMARY OF TORNADO WATCHES CURRENTLY IN EFFECT FOR
NORTHWEST AND NORTH CENTRAL ILLINOIS...

TILL 5PM CDT THE FOLLOWING COUNTIES...STEPHENSON/WINNEBAGO/BOONE/OGLE/
AND LEE...

TILL 10PM CDT THE FOLLOWING COUNTIES...DE KALB AND LASALLE...
ATTN: ISP 1..2..164

FIELDS
Special weather statement, Jul 2, 3:30 PM CDT, 30 minutes before
ILZ001-002-022100-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ROCKFORD IL
330 PM CDT THU JUL 2 1992

...TORNADO WATCH TILL 5 PM CDT FOR STEPHENSON/WINNEBAGO/BOONE/
OGLE/LEE COUNTIES...
...TORNADO WATCH TILL 10 PM CDT FOR DE KALB/LASALLE COUNTY...

THERE WERE STILL NUMEROUS THUNDERSHOWERS OCCURRING OVER ALL OF NORTHERN
ILLINOIS WITH THE EXCEPTION OF THE FAR NORTHWEST CORNER. WHILE THESE
SHOWERS WERE NOT SEVERE...MANY WILL STILL PRODUCE VERY HEAVY RAINS THAT
MAY CAUSE PERIODS OF URBAN AND LOW LAND FLOODING. MOVEMENT WAS TO THE
EAST AT 50 MPH THIS AFTERNOON AT 325 CDT.

ELSEWHERE...VERY STRONG THUNDERSTORMS CONTINUED OVER EASTERN AND
CENTRAL PORTIONS OF ILLINOIS. THERE WERE ALSO NEW STRONG THUNDERSTORMS
DEVELOPING OVER SOUTHEAST IOWA. THESE STORMS WERE ALSO MOVING EAST AT
50 MPH.
.
A NUMBER OF TORNADO WATCHES REMAIN IN EFFECT FOR A LARGE PORTION
OF NORTHWEST AND NORTH CENTRAL ILLINOIS. CONDITIONS ARE STILL VERY
UNSTABLE. SO ^THE THREAT FOR ADDITIONAL SEVERE WEATHER IS STILL STORNG.

STAY TUNED TO WEATHER RADIO OR YOUR LOCAL RADIO AND T. V. STATIONS
FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS.
ATTN: ISP 1..2..16

FIELDS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 2, 1:45 PM CDTSevere Thunderstorm WarningLOTKane, Kendall, LaSalle60 min
Jul 2, 1:45 PM CDTSevere Thunderstorm WarningLOTMcHenry60 min
Jul 2, 2:14 PM CDTSevere Thunderstorm WarningLOTGrundy, Livingston61 min
Jul 2, 2:14 PM CDTSevere Thunderstorm WarningLOTCook, DuPage, Will61 min
Jul 2, 2:26 PM CDTTornado WarningLOTDuPage, Kane49 min
Jul 2, 2:39 PM CDTTornado WarningLOTCook, Will51 min
Jul 2, 2:44 PM CDTSevere Thunderstorm WarningLOTFord, Iroquois, Kankakee61 min
Jul 2, 2:44 PM CDTSevere Thunderstorm WarningLOTLivingston61 min
Jul 2, 3:42 PM CDTSevere Thunderstorm WarningLOTFord, Iroquois33 min
Jul 2, 2:44 PM CDTSevere Thunderstorm WarningLOTLake, Porter61 min
Jul 2, 3:42 PM CDTSevere Thunderstorm WarningLOTPorter33 min

Nearby

Tornado Warnings in Indiana, 1992Every tornado warning in 1992Tornadoes in 1992

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.