Alert archive / Illinois / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 58, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 31, 1987, 2:56 PM CDT for Woodford County, Illinois. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- Jul 31, 1987, 2:56 PM CDT (19:56 UTC)
- Expired
- Jul 31, 1987, 4:00 PM CDT
- In force
- 64 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County Woodford County, IL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Peoria Regional, IL (KPIA), launched 12:00Z, 7.9 hours before the alert went out and 35 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
- 1785 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 1059 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.0
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, Jul 31, 2:29 PM CDT, 27 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 230 PM CDT FRI JUL 31 1987 ...STRONG THUNDERSTORM NORTHEAST OF PEORIA ILLINOIS BETWEEN HENRY AND ROANOKE... AT 225 PM..RADAR INDICATED AN INTENSE THUNDERSTORM ALONG THE MARSHALL..WOODFORD COUNTY LINE AT WASHBURN ILLINOIS WHICH IS ABOUT 30 MILES NORTHEAST OF PEORIA. THIS STORM WAS MOVING SOUTHEAST AT 25 MPH TOWARD ROANOKE..EUREKA AND EL PASO. PEOPLE IN THE PATH OF THIS STORM SHOULD BE PREPARED TO TAKE SHELTER AS DANGEROUS LIGHTNING..BRIEF GUSTY WINDS TO AROUND 50 MPH..AND HAIL WILL ACCOMPANY THIS STORM. PALMER ATTN ISP DIST 8..6
Special weather statement, Jul 31, 2:33 PM CDT, 23 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 235 PM CDT FRI JUL 31 1987 ...STRONG THUNDERSTORM EAST OF MACOMB IN WEST CENTRAL ILLINOIS... AT 230 PM..RADAR INDICATED AN INTENSE THUNDERSTORM 15 MILES EAST OF MACOMB ILLINOIS ALONG THE MC DONOUGH..FULTON COUNTY LINE. THIS STORM WAS MOVING SOUTHEAST AT 25 MPH INTO FULTON COUNTY TO BETWEEN VERMONT NAD LEWISTON ILLINOIS. PEOPLE IN THE PATH OF THIS STORM SHOULD BE PREPARED TO TAKE SHELTER AS DANGEROUS LIGHTNING..BRIEF GUSTY WINDS TO AROUND 50 MPH..AND HAIL WILL ACCOMPANY THIS STORM. PALMER ATTN ISP DIST 8..6
Special weather statement, Jul 31, 2:35 PM CDT, 21 minutes before
SPECIAL WEATHER STATEMENT........CORRECTION FOR STATE POLICE DISTS... NATIONAL WEATHER SERVICE PEORIA IL 235 PM CDT FRI JUL 31 1987 ...STRONG THUNDERSTORM EAST OF MACOMB IN WEST CENTRAL ILLINOIS... AT 230 PM..RADAR INDICATED AN INTENSE THUNDERSTORM 15 MILES EAST OF MACOMB ILLINOIS ALONG THE MC DONOUGH..FULTON COUNTY LINE. THIS STORM WAS MOVING SOUTHEAST AT 25 MPH INTO FULTON COUNTY TO BETWEEN VERMONT NAD LEWISTON ILLINOIS. PEOPLE IN THE PATH OF THIS STORM SHOULD BE PREPARED TO TAKE SHELTER AS DANGEROUS LIGHTNING..BRIEF GUSTY WINDS TO AROUND 50 MPH..AND HAIL WILL ACCOMPANY THIS STORM. PALMER ATTN ISP DIST 14
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 4:05 PM CDT | Severe Thunderstorm Warning | ILX | Tazewell | 55 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1987Every severe thunderstorm warning in 1987
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.