Alert archive / Illinois / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 20, NWS Lincoln, IL
NWS Lincoln, IL issued this severe thunderstorm warning at May 15, 1990, 5:06 PM CDT for Macoupin County, Montgomery County, Illinois. It was in force for 69 min.
The area
The counties it named.
The facts
- Issued
- May 15, 1990, 5:06 PM CDT (22:06 UTC)
- Expired
- May 15, 1990, 6:15 PM CDT
- In force
- 69 min
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
Counties Macoupin County, IL, Montgomery 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
Paducah/Barkley, KY (KPAH), launched 12:00Z, 10.1 hours before the alert went out and 257 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
- 0 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
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, May 15, 11:14 AM CDT, 5 hours 52 minutes before
ILZ009-010-151700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 1110AM CDT TUE MAY 15 1989 ...HEAVY RAIN ENTERING CENTRAL ILLINOIS... AT 11.10 AM CDT THE LEADING EDGE OF A LARGE AREA OF RAINSHOWERS AND A FEW THUNDERSTORMS EXTENDED FROM MISSOURI THROUGH QUINCY TO THE SPRINGFIELD AREA THEN BACK TO EAST ST. LOUIS. THE RAIN WAS BUILDING RAPIDLY TOWARD THE NORTHEAST. WHEN THE HEAVY RAIN BEGINS...IT SHOULD LAST FOR SEVERAL HOURS. PLACES THAT HAVE ALL READY BEEN SATURATED BY PREVIOUS RAINS WILL SHOW CONSIDERABLE PUDDLING AND POOLING AND SOME FLOODING OF FLOOD PRONE AREAS IS POSSIBLE. RAIN WILL CONTINUE FROM TIME TO TIME THROUGH WEDNESDAY WITH MORE PERIODS OF HEAVY RAIN TONIjGHT. FS
Special weather statement, May 15, 3:18 PM CDT, 1 hour 48 minutes before
ILZ009-010-152110- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 318 PM CDT TUE MAY 15 1989 ...TORNADO WATCH UNTIL 9 PM CDT FOR PORTIONS OF CENTRAL AND EASTERN ILLINOIS.. ...FLASH FLOOD WATCH FOR THIS AFTERNOON AND TONIGHT... AT 315 PM CDT WEATHER SERVICE RADARS SHOWS A LARGE AREA OF SHOWERS AND THUNDERSTORMS OVER CENTRAL AND EASTERN ILLINOIS. THE STORMS WERE SOUTH OF A LINE FROM JUST NORTH OF QUINCY ILLINOIS TO TO 40 MILES NORTHEAST OF DANVILLE ILLINOIS. THE STRONGEST THUNDERSTORMS WERE LOCATED 35 MILES SOUTHWEST OF SPRINGFIELD NEAR PANA ILLINOIS AND 30 MILES SOUTH OF DECATUR ILLINOIS NEAR SHELBYVILLE ILLINOIS. THE STRONGEST THUNDERSTORMS MAY PRODUCE HEAVY RAINFALL AMOUNTS..BRIEF STRONG AND GUSTY WINDS...HAIL AND DANGEROUS LIGHTNING..LOCAL FLOODING CAN BE EXPECTED WITH THE HEAVY DOWNPOURS. THE SHOWERS AND THUNDERSTORMS WERE NORTHEAST AT 30 MPH. NO SEVERE WEATHER HAS BEEN REPORTED TO THE NATIONAL WEATHER SERVICE OFFICE IN SPRINGFIELD DURING THE PAST HOUR. A TORNADO WATCH REMAINS IN EFFECT UNTIL 9 PM CDT FOR THE CENTRAL ILLINOIS COUNTIES OF COLE..CLARK...CUMBERLAND...SHELBY...MACOUPIN ...MONTGOMERY AND CHRISTIAN. A FLASH FLOOD WATCH REMAINS NIN EFFECT THIS THIS EVENING AND TONIGHT. HILLIARD
Special weather statement, May 15, 5:06 PM CDT, 0 minutes before
ILZ009-010-152215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 405 PM CDT TUE MAY 15 1989 ...TORNADO WATCH UNTIL 9 PM CDT FOR PORTIONS OF CENTRAL AND EASTERN ILLINOIS.. ...FLASH FLOOD WATCH FOR THIS AFTERNOON AND TONIGHT... AT 355 PM CDT A LARGE AREA OF SHOWERS AND THUNDERSTORMS 80 MILES WIDE EXTENDED FROM 20 MILES SOUTHEAST OF CHAMPAIGN TO 20 MILES SOUTHWEST OF QUINCY. THE RAIN WAS MOVING TOWARD THE EAST AT 30 TO 40 MPH. THE THUNDERSTORMS PRODUCING THE HEAVIEST RAIN WERE JUST TO THE NORTH OF THE CONFLUENCE OF THE ILLINOIS AND MISSISSIPPI RIVERS. WARNING HAVE BEEN ISSUED FOR CALHOUN...JERSEY AND GREEN COUNTIES AND MACOUPIN WILL BE WATCHED CAREFULLY DURING THE HOUR BEFORE 5PM. NO SEVERE WEATHER HAS BEEN REPORTED TO THE SPRINGFIELD WEATHER OFFICE DURING THE LAST HOUR. FS
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 6:16 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Montgomery, Shelby | 59 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 1990Every severe thunderstorm warning in 1990
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.