Alert archive / Illinois / Severe Thunderstorm Warnings in 1992
Severe Thunderstorm Warning 21, NWS Chicago, IL
NWS Chicago, IL issued this severe thunderstorm warning at Jul 2, 1992, 3:42 PM CDT for Ford County, Iroquois County, Illinois. It was in force for 33 min.
The area
The counties it named.
The facts
- Issued
- Jul 2, 1992, 3:42 PM CDT (20:42 UTC)
- Expired
- Jul 2, 1992, 4:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
Counties Ford County, IL, Iroquois County, IL
The nearest sounding before it
Dayton/James M C, OH (KDAY), launched 12:00Z, 8.7 hours before the alert went out and 335 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHI 022044 SVRCHI ILC053-075-INC127-022115- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHICAGO IL 342 PM CDT THU JUL 2 1992 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 415 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN EAST CENTRAL ILLINOIS ...SOUTHERN FORD COUNTY...SOUTHEASTERN IROQUOIS COUNTY IN NORTHWEST INDIANA ...PORTER COUNTY AND THE ADJACENT WATERS OF SOUTHERN LAKE MICHIGAN AT 341 PM WEATHER SERVICE RADAR SHOWED A LINE OF SEVERE THUNDERSTORMS FROM 10 MILES EAST OF GARY TO 10 MILES WEST OF PAXTON. THE LINE OF SEVERE STORMS WAS MOVING EAST AT 50 MPH. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. ATTN ISP 21 TBAYLOR
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 2, 1:04 PM CDT, 2 hours 38 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, 1 hour 42 minutes 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, 51 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, 29 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, 28 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, 12 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 1:45 PM CDT | Severe Thunderstorm Warning | LOT | Kane, Kendall, LaSalle | 60 min |
| Jul 2, 1:45 PM CDT | Severe Thunderstorm Warning | LOT | McHenry | 60 min |
| Jul 2, 2:14 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Livingston | 61 min |
| Jul 2, 2:14 PM CDT | Severe Thunderstorm Warning | LOT | Cook, DuPage, Will | 61 min |
| Jul 2, 2:26 PM CDT | Tornado Warning | LOT | DuPage, Kane | 49 min |
| Jul 2, 2:39 PM CDT | Tornado Warning | LOT | Cook, Will | 51 min |
| Jul 2, 2:44 PM CDT | Severe Thunderstorm Warning | LOT | Ford, Iroquois, Kankakee | 61 min |
| Jul 2, 2:44 PM CDT | Severe Thunderstorm Warning | LOT | Livingston | 61 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1992Every severe thunderstorm warning 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.