Alert archive / Illinois / Flash Flood Warnings in 1993
Flash Flood Warning 28, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood warning at Jul 18, 1993, 9:55 PM CDT for DeKalb County, Illinois. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1993, 9:55 PM CDT (02:55 UTC)
- Expired
- Jul 19, 1993, 1:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Lincoln, IL
- Area
- Whole counties
County DeKalb County, IL
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 2.9 hours before the alert went out and 293 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 547 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -25 m²/s²
- 0-3 km storm-relative helicity
- 15 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 KRFD 190255
FFWRFD
ILC037-190600-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ROCKFORD IL
955 PM CDT SUN JUL 18 1993
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING
EFFECTIVE UNTIL 100 AM CDT FOR PEOPLE IN THE FOLLOWING COUNTY
IN THE NORTH CENTRAL PART OF ILLINOIS
DEKALB
AT 9 50 PM...SERIOUS FLOODING WAS STILL OCCURRING ACROSS MUCH OF
NORTHERN AND CENTRAL DE KALB COUNTY. FLOODING OF HIGHWAYS AND
CITY STREETS WILL CONTINUE TO CREATE DANGEROUS TRAVEL CONDITIONS
ACROSS THE COUNTY INTO EALRY MONDAY MORNING. SOME HOMES ALONG
STREAMS...CREEK AND RIVERS WILL ALSO BE AT RISK FOR MORE FLOODING.
SOME COMMUNITIES THAT ARE IN OR NEAR THE FLASH FLOOD AREA...
DE KALB...MALTA...SYCAMORE...GENOA.
IF YOU ARE IN LOW LYING...FLOOD PRONE AREA...MOVE TO HIGHER GROUND!
IF CAMPING...WATCH FOR RAPIDLY RISING WATER THAT MAY ENDANGER YOUR
CAMPSITE! DO NOT CROSS HIGHWAYS THAT ARE COVERED BY WATER...IT MAY
BE MUCH DEEPER THAN YOU THINK! REMEMBER...FLASH FLOODS HAPPEN VERY
RAPIDLY...BE ALERT!
SANDERSWhat 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, Jul 18, 6:55 PM CDT, 3 hours before
ILZ005>007-190100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 655 PM CDT SUN JUL 18 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MCLEAN COUNTY... ...FLASH FLOOD WATCH FOR ALL OF WEST CENTRAL ILLINOIS... AT 655 PM CDT... SHOWERS AND THUNDERSTORMS CONTINUED MAINLY ALONG AND EAST OF THE ILLINOIS RIVER. THE HEAVIEST PRECIPITATION WAS OCCURRING OVER WESTERN MASON COUNTY...NEAR HAVANNA...35 MILES SOUTHWEST OF PEORIA. MOVEMENT CONTINUED TO THE EAST NORTHEAST AT 35 MPH. SOME AREAS RECIEVED LOCALLY HEAVY RAINFALL THROUGH THE AFTERNOON AND ADDITIONAL RAINFALL IN THOSE AREAS COULD CAUSE FLOODING. PERSONS SHOULD REMAIN ALERT TO CHANGING WEATHER CONDITIONS. DO NOT TRY TO CROSS WATER COVERED ROADWAYS. STAY CLEAR OF SWOLLEN STREAMS AND RIVERS. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL RADIO AND TELEVISION STATIONS FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. BREESER
Special weather statement, Jul 18, 7:00 PM CDT, 2 hours 55 minutes before
ILZ005>007-190100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 655 PM CDT SUN JUL 18 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR MCLEAN COUNTY... ...FLASH FLOOD WATCH FOR ALL OF WEST CENTRAL ILLINOIS... AT 655 PM CDT... SHOWERS AND THUNDERSTORMS CONTINUED MAINLY ALONG AND EAST OF THE ILLINOIS RIVER. THE HEAVIEST PRECIPITATION WAS OCCURRING OVER WESTERN MASON COUNTY...NEAR HAVANNA...35 MILES SOUTHWEST OF PEORIA. MOVEMENT CONTINUED TO THE EAST NORTHEAST AT 35 MPH. SOME AREAS RECIEVED LOCALLY HEAVY RAINFALL THROUGH THE AFTERNOON AND ADDITIONAL RAINFALL IN THOSE AREAS COULD CAUSE FLOODING. PERSONS SHOULD REMAIN ALERT TO CHANGING WEATHER CONDITIONS. DO NOT TRY TO CROSS WATER COVERED ROADWAYS. STAY CLEAR OF SWOLLEN STREAMS AND RIVERS. STAY TUNED TO NOAA WEATHER RADIO OR LOCAL RADIO AND TELEVISION STATIONS FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS. BREESER
Special weather statement, Jul 18, 8:02 PM CDT, 1 hour 53 minutes before
ILZ009-190130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 802 PM CDT SUN JUL 18 1993 ...SEVERE THUNDERSTORM WATCH IN EFFECT UNTIL 10 PM FOR PARTS OF CENTRAL ILLINOIS HAS BEEN CANCELLED... THE SEVERE THUNDERSTORM WATCH THAT WAS IN EFFECT UNTIL 10 PM HAS BEEN CANCELLED. COUNTIES IN CENTRAL ILLINOIS THAT HAVE BEEN DROPPED ARE SANGAMON...MACON...AND DEWITT. AUTEN
Special weather statement, Jul 18, 8:03 PM CDT, 1 hour 52 minutes before
ILZ005>007-190230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 805 PM CDT SUN JUL 18 1993 ...SEVERE THUNDERSTORM WATCH NO LONGER IN EFFECT FOR ANY WEST CENTRAL ILLINOIS COUNTIES... ...FLASH FLOOD WATCH CANCELLED FOR ALL OF WEST CENTRAL ILLINOIS... AT 800 PM CDT... THE THREAT OF SEVERE WEATHER HAD ENDED FOR MCLEAN COUNTY. ONLY A FEW SCATTERED SHOWERS PERSISTED ACROSS THE REGION AROUND MID EVENING. SINCE HEAVY RAIN IS NO LONGER EXPECTED ACROSS WEST CENTRAL ILLNOIS... THE THREAT OF FLASH FLOODING HAS ALSO BEEN GREATLY DIMINISHED ACROSS THE REGION. BREESER
Special weather statement, Jul 18, 8:05 PM CDT, 1 hour 50 minutes before
ILZ005>007-190230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEORIA IL 805 PM CDT SUN JUL 18 1993 ...SEVERE THUNDERSTORM WATCH NO LONGER EFFECT FOR ANY WEST CENTRAL ILLINOIS COUNTIES... ...FLASH FLOOD WATCH CANCELLED FOR ALL OF WEST CENTRAL ILLINOIS... AT 800 PM CDT... THE THREAT OF SEVERE WEATHER HAD ENDED FOR MCLEAN COUNTY. ONLY A FEW SCATTERED SHOWERS PERSISTED ACROSS THE REGION AROUND MID EVENING. SINCE HEAVY RAIN IS NO LONGER EXPECTED ACROSS WEST CENTRAL ILLNOIS... THE THREAT OF FLASH FLOODING HAS ALSO BEEN GREATLY DIMINISHED ACROSS THE REGION. BREESER
Special weather statement, Jul 18, 9:02 PM CDT, 53 minutes before
ILZ009-010-190245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SPRINGFIELD IL 900 PM CDT SUN JUL 18 1993 ...THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR EAST CENTRAL ILLINOIS... THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR EAST CENTRAL ILLINOIS. AT 8 55 PM...RADAR INDICATED A LINE OF STRONG THUNDERSTORMS WEST OF TERRE HAUTE INDIANA FROM THE SOUTHWEST CORNER OF EDGAR COUNTY...ACROSS THE NORTHWEST CORNER OF CLARK COUNTY AND THEN FROM NORTHEAST TO SOUTHWEST ACROSS CUMBERLAND COUNTY...THEN SOUTHWEST TO NEAR SALEM ILLINOIS. THE LINE OF STRONG STORMS WAS MOVING EAST AT 25 TO 30 MPH. THESE STORMS WILL HAVE FREQUENT DANGEROUS LIGHTNING...HEAVY DOWNPOURS OF RAIN THAT MAY CAUSE FLOODING OF LOW AREAS...ROADWAYS...UNDERPASSES AND BASEMENTS. THE STORMS WERE IN A LARGER AREA OF SHOWERS AND THUNDERSTORMS THAT WERE OVER EAST CENTRAL ILLINOIS FROM JUST EAST OF DECATUR THROUGH CHAMPAIGN AND DANVILLE...SOUTHWEST TO hVANDALIA. PALMER
The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 7:11 PM CDT | Severe Thunderstorm Warning | ILX | Champaign | 34 min |
| Jul 18, 7:31 PM CDT | Flash Flood Warning | ILX | DeKalb | 119 min |
| Jul 18, 7:47 PM CDT | Tornado Warning | ILX | Shelby | 23 min |
Nearby
Flash Flood Warnings in Illinois, 1993Every flash flood warning in 1993
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.