Alert archive / Illinois / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 37, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at Jul 5, 1987, 2:22 PM CDT for Macoupin County, Montgomery County, Morgan County, Illinois. It was in force for 38 min.
The area
The counties it named.
The facts
- Issued
- Jul 5, 1987, 2:22 PM CDT (19:22 UTC)
- Expired
- Jul 5, 1987, 3:00 PM CDT
- In force
- 38 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Macoupin County, IL, Montgomery County, IL, Morgan 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
Salem-Leckrone, IL (KSLO), launched 12:00Z, 7.4 hours before the alert went out and 118 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
- 151 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSPI 051922 SVRSPI ILC137-117-135-052000- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SPRINGFIELD IL 222 PM CDT SUN JUL 5 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 300 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF CENTRAL ILLINOIS...MORGAN...MACOUPIN AND MONTGOMERY AT 215PM CDT A FUNNEL CLOUDY WAS REPORTED IN THE NORTHERN PART OF CARLINVILLE IN MACOUPIN COUNTY...40 MILES SOUTH SOUTHWEST OF SPRINGFIELD...MOVING TOWARD THE NORTHEAST. THE LEADING EDGE OF A LARGE AREA OF THUNDERSTORMS WAS PARALLEL TO THE MISSISSIPPI RIVER FROM 20 MILES NORTH OF QUINCY TO 60 MILES SOUTH OF ST. LOUIS. ALONG AMD NEAR THE LEADING EDGE...FUNNEL CLOUDS...DANGEROUS LIGHTNING... AND TORRENTIAL RAINS ARE POSSIBLE. IF YOU ARE IN AN AREA THREATENED BY THE STORM..GO TO A REINFORCED SHELTER AND PREPARE FOR DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DANGEROUS LIGHTNING. REMEMBER...SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING SO BE ON THE LOOKOUT. INTENSE LIGHTNING IS REPORTED WITH THIS STORM. IF OUTDOORS... STAY AWAY FROM HIGH OBJECTS. MOVE INDOOR IF POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID USING TELEPHONES AND ELECTRICAL EQUIPMENT. ATTN ISP DIST...9 AND 18 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 5, 2:17 PM CDT, 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 215 PM CDT SUN JUL 5 1987 ...STRONG THUNDERSTORMS MOVING INTO CENTRAL ILLINOIS... AT 210 PM CDT RADAR INDICATED THE LEADING EDGE OF A LARGE AREA OF SHOWERS AND THUNDERSTORMS EXTENDED FROM COLCHESTER TO BEARDSTOWN TO JACKSONVILLE TO GREENVILLE THEN SOUTH TO DU QUOIN. THE STRONGEST THUNDERSTORMS WERE IN A LINE EXTENDING FROM MEREDOSIA TO CARLINVILLE TO GREENVILLE. THESE STORMS WERE MOVING TOWARD THE EAST A 30 MILES AN HOUR. STRONG GUSTY WINDS...HEAVY RAIN AND DANGEROUS LIGHTNING ARE ASSOCIATED WITH THESE STORMS. IF THREATING WEATHER APPROACHES YOUR AREA...BE CAUTIOUS AND SEEK SHELTER. 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.