Alert archive / Illinois / Flash Flood Warnings in 1990
Flash Flood Warning 5, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Dec 29, 1990, 9:15 AM CST for Ford County, Livingston County, Illinois. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Dec 29, 1990, 9:15 AM CST (15:15 UTC)
- Expired
- Dec 29, 1990, 6:00 PM CST
- In force
- 9 hr
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
Counties Ford County, IL, Livingston 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
Dayton/James M C, OH (KDAY), launched 12:00Z, 3.3 hours before the alert went out and 367 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
- 537 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 347 m²/s²
- 0-3 km storm-relative helicity
- 347 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 flash flood 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, Dec 29, 3:49 AM CST, 5 hours 26 minutes before
ILZ001-002-291330- SHORT RANGE WEATHER OUTLOOK FOR NORTHERN ILLINOIS NATIONAL WEATHER SERVICE ROCKFORD IL 345 AM CST SAT DEC 29 1990 AT 3 45 AM CST...THESE NORTHERN ILLINOIS COUNTIES ALL REPORTED THAT THEIR SECONDARY ROADS WERE SLICK OR IMPASSABLE...JO DAVIESS... STEPHENSON...BOONE...CARRROLL...OGLE...WHITESIDE...LEE AND DE KALB. THEY ALSO ADVISED THAT A NUMBER OF MAIN ROADS WERE SLICK. THE DE KALB AND BOONE COUNTY SHERIFFS REPORTED RAIN...THE WHITESIDE SHERIFF REPORTED FREEZING RAIN...THE LEE AND OGLE SHERIFFS REPORTED DRIZZLE AND THE CARROLL COUNTY SHERIFF REPORTED FREEZING DRIZZLE. THIS RAIN IS FREEZING ONTO THE GROUND IN MANY LOCATIONS AND IS ALSO WASHING THE ROAD CREWS SALT OFF THE ROADS. I RECOMMENDED THAT YOU REMAIN HOME TONIGHT...BUT IF YOU MUST TRAVEL ...REMEMBER TO GO SLOW AND ALLOW PLENTY OF TIME TO REACH YOUR DESTINATION. REMEMBER...YOU MAY NOT BE ABLE TO SEE ICE ON THE ROAD UNTIL YOU ARE ON THE ICE. BELL ATTN: `ISP 1..2..16.
Special weather statement, Dec 29, 4:30 AM CST, 4 hours 45 minutes before
ILZ003-005-008-291330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 4 30 AM CST SAT DEC 29 1990 A MILD RAINY MORNING WILL GIVE WAY TO A COLD AND WINTRY AFTERNOON. ANOTHER ARCTIC FRONT WILL BE MOVING THROUGH CHICAGO AND NORTHEAST ILLINOIS BY MID DAY SENDING TEMPERATURES ON A DOWNWARD SPIRAL THAT WILL SEE MORNING READING IN THE 40S FALL INTO THE 20S BY EARLY AFTERNOON AND TO 15 TO 20 BY EVENING. A WET RAINY MORNING... MAY BECOME AN ICY AFTERNOON AS TEMPERATURES DROP BELOW FREEZING AND FREEZING DRIZZLE DEVELOPS. SOME SNOW MAY OCCUR BY DARK. GUSTY NORTHWEST WINDS WILL USHER IN THE COLDER AIR. KAHN
Special weather statement, Dec 29, 5:18 AM CST, 3 hours 57 minutes before
ILZ003-005-008-291330- URBAN AND SMALL STREAM FLOOD ADVISORY NATIONAL WEATHER SERVICE CHICAGO IL 5 00 AM CST SAT DEC 29 1990 RAIN HAS BEEN FALLING ACROSS NORTHEAST ILLINOIS AND THE CHICAGO METROPOLITAN AREA SINCE LATE FRIDAY AFTERNOON. THROUGH 5 AM RAINFALL TOTALS WERE AVERAGING AROUND 1/2 TO 2/3 OF AN INCH... BUT A FEW LOCALITIES SOUTH OF CHICAGO WERE APPROACHING THE ONE INCH MARK. THE RAIN IS EXPECTED TO CONTINUE THROUGH THE EARLY MORNING HOURS. MOTORISTS SHOULD BE ALERT FOR STANDING WATER ON ROADWAYS. PERSONS IN LOW LYING AREAS NEAR CREEKS AND STREAMS SHOULD BE ALERT FOR RISING WATER LEVELS AND POSSIBLE MINOR FLOODING. TYPICAL URBAN TYPE FLOODING OF STREETS...VIADUCTS AND BASEMENTS MAY ALSO OCCUR. KAHN
Special weather statement, Dec 29, 6:44 AM CST, 2 hours 31 minutes before
ILZ001-002-291630- SHORT RANGE WEATHER OUTLOOK FOR NORTHERN ILLINOIS NATIONAL WEATHER SERVICE ROCKFORD IL 645 AM CST SAT DEC 29 1990 AT 6 45 AM CST...THESE NORTHERN ILLINOIS COUNTIES ALL REPORTED THAT THEIR SECONDARY ROADS WERE SLICK OR IMPASSABLE...JO DAVIESS... STEPHENSON...BOONE...CARRROLL...OGLE...WHITESIDE...LEE AND DE KALB. THEY ALSO ADVISED THAT A NUMBER OF MAIN ROADS WERE SLICK. THE OGLE COUNTY SHERIFF REPORTED STANDING WATER ON MANY ROADS. AREAS OF RAIN OR DRIZZLE WERE WIDESPREAD ACROSS NORTHERN ILLINOIS AND ARE EXPECTED TO CONTINUE TO AT LEAST 9 AM. WINNEBAGO COUNTY HAD RAIN... THE SHERIFFS OF BOONE AND OGLE COUNTY ALSO REPORTED RAIN. DRIZZLE WAS REPORTED BY THE SHERIFFS OF STEPHENSON...CARROLL AND DE KALB COUNTIES. LEE COUNTY WAS RECEIVING FREEZING DRIZZLE. YOU SHOULD REMAIN HOME TODAY...BUT...IF YOU MUST TRAVEL...REMEMBER TO GO SLOW AND ALLOW PLENTY OF TIME TO REACH YOUR DESTINATION. REMEMBER...YOU MAY NOT BE ABLE TO -SEE ICE ON THE ROAD UNTIL YOU ARE ALREADY DRIVING OVER IT. BELL ATTN: ISP 1..2..16.
Special weather statement, Dec 29, 7:00 AM CST, 2 hours 15 minutes before
ILZ003-005-008-291630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 7 00 AM CST SAT DEC 29 1990 A MILD RAINY MORNING WILL GIVE WAY TO A COLD AND WINTRY AFTERNOON. ANOTHER ARCTIC FRONT WILL BE MOVING THROUGH CHICAGO AND NORTHEAST ILLINOIS AROUND MIDDAY SENDING TEMPERATURES ON A DOWNWARD SPIRAL THAT WILL SEE MORNING READING IN THE 40S FALL INTO THE 20S BY EARLY AFTERNOON AND TO 15 TO 20 BY EVENING. A WET RAINY MORNING... MAY BECOME AN ICY AFTERNOON AS TEMPERATURES DROP BELOW FREEZING AND FREEZING DRIZZLE DEVELOPS. SOME SNOW MAY OCCUR BY DARK. THE BEAR KANSAS CITY GAME SCHEDULED TO BEGIN AT 11 30 AM WILL START IN MILD DAMP WEATHER WITH TEMPERATURES IN THE 40S... BUT SHO@ULD END IN AN ICY CHILL WITH TEMPERATURES FALLING INTO THE 20S AND STRONG NORTH TO NORTHWEST WINDS OF 15 TO 25 MPH. KAHN
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 29, 9:15 AM CST | Flash Flood Warning | LOT | Iroquois | 9 hr |
Nearby
Flash Flood Warnings in Illinois, 1990Every flash flood 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.