Alert archive / Illinois / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 51, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 26, 1987, 3:32 PM CDT for Ogle County, Stephenson County, Illinois. It was in force for 43 min. 1 report 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
- Jul 26, 1987, 3:32 PM CDT (20:32 UTC)
- Expired
- Jul 26, 1987, 4:15 PM CDT
- In force
- 43 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Ogle County, IL, Stephenson County, IL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 26, 3:35 PM CDT | Hail 0.75 | Stephenson, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Peoria Regional, IL (KPIA), launched 12:00Z, 8.5 hours before the alert went out and 170 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- NaN m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
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 26, 2:51 PM CDT, 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 2 45 PM CDT SUN JUL 25 1987 ...SEVERE THUNDERSTORM WATCH CONTINUED FOR PORTIONS OF EAST CENTRAL ILLINOIS UNTIL 9 PM CDT THIS EVENING... AT 2 45 PM RADAR INDICATED STRONG THUNDERSTORMS NORTH OF MONTICELLO IN PIATT COUNTY..NORTHEAST OF URBANA IN CHAMPAIGN COUNTY AND SOUTH WEST OF ROSSVILLE IN NORTHERN VERMILION COUNTY. OTHER THUNDERSTORMS WERE DEVELOPING SOUTHWEST AND SOUTHEAST OF B[EARDSTOWN IN WEST CENTRAL ILLINOIS. THESE STORM WERE MOVING TO THE NORTHEAST AT 20 MPH. IF DANGEROUS WEATHER CONDITIONS APPROACH YOUR AREA...BE CAUTIOUS AND SEEK SHELTER. DAVIS
Special weather statement, Jul 26, 2:55 PM CDT, 37 minutes before
SPECIAL WEATHER STATEMENT...CORRECTION ON DATE NATIONAL WEATHER SERVICE SPRINGFIELD IL 2 45 PM CDT SUN JUL 26 1987 ...SEVERE THUNDERSTORM WATCH CONTINUED FOR PORTIONS OF EAST CENTRAL ILLINOIS UNTIL 9 PM CDT THIS EVENING... AT 2 45 PM RADAR INDICATED STRONG THUNDERSTORMS NORTH OF MONTICELLO IN PIATT COUNTY..NORTHEAST OF URBANA IN CHAMPAIGN COUNTY AND SOUTH WEST OF ROSSVILLE IN NORTHERN VERMILION COUNTY. OTHER THUNDERSTORMS WERE DEVELOPING SOUbTHWEST AND SOUTHEAST OF BEARDSTOWN IN WEST CENTRAL ILLINOIS. THESE STORM WERE MOVING TO THE NORTHEAST AT 20 MPH. IF DANGEROUS WEATHER CONDITIONS APPROACH YOUR AREA...BE CAUTIOUS AND SEEK SHELTER. DAVIS
Special weather statement, Jul 26, 3:23 PM CDT, 9 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 220 PM CDT SUN JUL 26 1987 ...THUNDERSTORMS DEVELOPING IN CENTRAL ILLINOIS... AT 215 PM CDT NATIONAL WEATHER SERVICE RADAR INDICATES THE DE
Special weather statement, Jul 26, 3:24 PM CDT, 8 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 320 PM CDT SUN JUL 26 1987 ...THUNDERSTORMS DEVELOPING IN CENTRAL ILLINOIS... AT 315 PM CDT NATIONAL WEATHER SERVICE RADAR INDICATES THE DEVELOPMENT OF THUNDERSTORMS OVER THE NORTHERN HALF OF ILLINOIS. THUNDERSTORMS WERE INDICATED JUST SOUTH OF MOLINE...30 MILES EAST OF BRADFORD NEAR STREATOR...IN THE CHAMPAIGN/URBANA AREA...AND 20 MILES NORTHEAST OF QUINCY NEAR PLYMOUTH AND AUGUSTA. THE STORMS WERE MOVING SOUTHEAST AT ABOUT 30 MPH. THUNDERSTORMS WILL CONTINUE TO DEVELOP OVER NORTHERN AND CENTRAL ILLINOIS THIS EVENING AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM CDT. STAY ALERT FOR POSSIBLE WARNINGS. MONITO|R NOAA WEATHER RADIO OR YOUR FAVORITE RADIO OR TELEVISION STATION FOR FURTHER STATEMENTS OR POSSIBLE WARNINGS. MACH
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 26, 4:21 PM CDT | Severe Thunderstorm Warning | ILX | Boone, DeKalb, Winnebago | 54 min |
| Jul 26, 5:47 PM CDT | Severe Thunderstorm Warning | ILX | Coles, Moultrie | 58 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.