Alert archive / Illinois / Tornado Warnings in 1996
Tornado Warning 7, NWS Chicago, IL
NWS Chicago, IL issued this tornado warning at Apr 19, 1996, 7:29 PM CDT for LaSalle County, Livingston County, Illinois. It was in force for 31 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 19, 1996, 7:29 PM CDT (00:29 UTC)
- Expired
- Apr 19, 1996, 8:00 PM CDT
- In force
- 31 min
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
Counties LaSalle County, IL, Livingston County, IL
The radar
The Chicago radar (KLOT), 76 km from the middle of the area, began a volume at 00:32 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 19, 7:35 PM CDT | Hail 0.75 | Leonore, IL | |
| Apr 19, 7:50 PM CDT | Thunderstorm Wind | Streator, IL | |
| Apr 19, 8:05 PM CDT | Hail 1 | Peru, IL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.5 hours before the alert went out and 108 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
- 1505 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 765 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 268 m²/s²
- Significant tornado parameter
- 2.4
- Supercell composite
- 11.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHI 200029 TORCHI ILC099-105-200100- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE CHICAGO IL 729 PM CDT FRI APR 19 1996 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 800 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHEAST ILLINOIS ...SOUTHERN LA SALLE COUNTY...NORTHWESTERN LIVINGSTON COUNTY AT 720 PM CDT A TORNADO WAS REPORTED BY POLICE ON THE GROUND JUST SOUTHWEST OF MAGNOLIA IN PUTNAM COUNTY...OR ABOUT 16 MILES WEST OF STREATOR. THE STORM IS MOVING TO THE EAST AT 35 MPH AND WILL BE PASSING NEAR LOSTANT...MUNSTER AND STREATOR BY 745 PM CDT. A TORNADO IS ON THE GROUND! TAKE SHELTER NOW! MERZLOCK
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, Apr 19, 4:22 PM CDT, 3 hours 7 minutes before
ILZ019-021-192230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 423 PM CDT FRI APR 19 1996 AT 417 PM A LINE OF STRONG THUNDERSTORMS WAS FROM LASALLE TO STREATOR IN LASALLE COUNTY. PEA SIZE HAIL WAS REPORTED IN WENONA IN EXTREME NORTHEAST MARSHALL COUNTY AS THE STORMS MOVED THROUGH. THESE STORMS WERE MOVING NORTHEAST AT 35 MPH AND WILL AFFECT OTTAWA BY 425 PM...SENECA BY 445 PM AND BOTH MORRIS AND YORKVILLE BY 515 PM. TRS
Special weather statement, Apr 19, 4:24 PM CDT, 3 hours 5 minutes before
ILZ019>021-192230- SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE CHICAGO IL 423 PM CDT FRI APR 19 1996 AT 417 PM A LINE OF STRONG THUNDERSTORMS WAS FROM LASALLE TO STREATOR IN LASALLE COUNTY. PEA SIZE HAIL WAS REPORTED IN WENONA IN EXTREME NORTHEAST MARSHALL COUNTY AS THE STORMS MOVED THROUGH. THESE STORMS WERE MOVING NORTHEAST AT 35 MPH AND WILL AFFECT OTTAWA BY 425 PM...SENECA BY 445 PM AND BOTH MORRIS AND YORKVILLE BY 515 PM. TRS CORRECTED CODING
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 7:39 PM CDT | Tornado Warning | LOT | Kankakee | 36 min |
| Apr 19, 8:05 PM CDT | Tornado Warning | LOT | LaSalle | 40 min |
| Apr 19, 8:22 PM CDT | Tornado Warning | LOT | Grundy, Will | 38 min |
| Apr 19, 9:16 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, Kendall, Will | 29 min |
| Apr 19, 9:20 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 25 min |
| Apr 19, 9:34 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 26 min |
| Apr 19, 9:34 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 26 min |
| Apr 19, 9:41 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 34 min |
| Apr 19, 10:00 PM CDT | Severe Thunderstorm Warning | LOT | Kankakee, Will | 30 min |
| Apr 19, 10:00 PM CDT | Severe Thunderstorm Warning | LOT | Cook | 30 min |
| Apr 19, 10:08 PM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry | 37 min |
| Apr 19, 10:45 PM CDT | Severe Thunderstorm Warning | LOT | Lake, McHenry | 30 min |
| Apr 19, 11:06 PM CDT | Severe Thunderstorm Warning | LOT | Cook, Will | 34 min |
| Apr 19, 11:19 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 26 min |
Nearby
Tornado Warnings in Illinois, 1996Every tornado warning in 1996Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.