Alert archive / Illinois / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 36, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 4, 1987, 2:51 PM CDT for DeWitt County, Logan County, Macon County, Illinois. It was in force for 54 min.
The area
The counties it named.
The facts
- Issued
- Jul 4, 1987, 2:51 PM CDT (19:51 UTC)
- Expired
- Jul 4, 1987, 3:45 PM CDT
- In force
- 54 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties DeWitt County, IL, Logan County, IL, Macon 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 82 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
- 4 J/kg
- Mixed-layer CIN
- -265 J/kg
- Mixed-layer LCL
- 1320 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 93 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 KSPI 041951 SVRSPI ILC107-039-115-042045- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SPRINGFIELD IL 251 PM CDT SAT JUL 4 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 345 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF CENTRAL ILLINOIS...SOUTHEAST LOGAN...DE-WITT AND NORTHWEST MACON AT 243 PM CDT LOGAN COUNTY ESDA REPORTED THREE FUNNEL CLOUDS JUST SOUTHWEST OF LATHAM IN LOGAN COUNTY...20 MILES NORTHWEST OF DECATUR ...MOVING TOWARD THE NORTHEAST. IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY R_AIN AND DANGEROUS LIGHTNING. REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT. ATTN ISP DIST...6...9 AND 10 FS
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 4, 12:32 PM CDT, 2 hours 19 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 1230 PM CDT SAT JUL 4 1987 ...STRONG THUNDERSTORMS DEVELOPING IN EAST CENTRAL ILLINOIS... AT 1225 PM CDT RADAR INDICTED SEVERAL STRONG THUNDERSTORMS IN EAST CENTRAL ILLINOIS. THESE WERE BETWEEN STEWARDSON IN SHELBY COUNTY AND MATTOON IN COLES COUNTY...ALSO AROUND SULLIVAN IN MOULTRIE COUNTY. THESE STRONG THUNDERSTORMS WERE PRODUCING HEAVY RAIN...STRONG GUSTY WINDS AND DANGEROUS LIGHTENING. THE STORMS WERE MOVING TOWARD THE NORTHEAST AT ABOUT 15 MILES AN HOUR. IF DANGEROUS WEATHER CONDITIONS APPROACH YOUR AREA...BE CAUTIOUS AND SEEK SHELTER. REEDY [ ]
Special weather statement, Jul 4, 1:21 PM CDT, 1 hour 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 1320 PM CDT SAT JUL 4 1987 ...STRONG THUNDERSTORMS IN EAST CENTRAL ILLINOIS... AT 115 PM CDT RADAR INDICTED STRONG THUNDERSTORMS IN EAST CENTRAL ILLINOIS. THESE WERE NEAR MATTOON AND CHARLESTON AND WERE MOVING TOWARD THE NORTHEAST AT 15 MILES AN HOUR. THESE STRONG THUNDERSTORMS WERE PRODUCING HEAVY RAIN...STRONG GUSTY WINDS...DANGEROUS LIGHTENING AND SOME PEA SIZE HAIL. OTHE R SCATTERED THUNDERSTORMS EXTENDED FROM PITTSFIELD EAST TO MARTINSVILLE. IF DANGEROUS WEATHER CONDITIONS APPROACH YOUR AREA...BE CAUTIOUS AND SEEK SHELTER. REEDY
Special weather statement, Jul 4, 2:25 PM CDT, 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 225 PM CDT SAT JUL 4 1987 ...STRONG THUNDERSTORMS IN CENTRAL ILLINOIS... AT 220 PM CDT RADAR INDICTED STRONG THUNDERSTORMS SCATTERED ACROSS CENTRAL ILLLINOIS. THESE WERE LOCATED NORTH OF BEARDSTOWN...SOUTHEAST OF CHANDLERVILLE...SOUTH OF SPRINGFIELD AND SOUTHEAST OF DECATUR. THESE STRONG THUNDERSTORMS WERE PRODUCING HEAVY RAIN...STRONG GUSTY WINDS...AND DANGEROUS LIGHTENING AND WERE MOVING TOWARD THE NORTHEAST AT 20 MILES AN HOUR. OTHER SCATTERED THUNDERSTORMS EXTENDED FROM QUINCY EAST TO MARTINSVILLE AND FROM PEORIA SOUTH TO NOKOMIS. IF DANGEROUS WEATHER CONDITIONS APPROACH YOUR AREA...BE CAUTIOUS AND SEEK SHELTER.I REEDY
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.