Alert archive / Indiana / Flash Flood Warnings in 1997
Flash Flood Warning 18, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Jul 18, 1997, 2:19 PM CDT for Lake County, Indiana. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 18, 1997, 2:19 PM CDT (19:19 UTC)
- Expired
- Jul 18, 1997, 3:00 PM CDT
- In force
- 41 min
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
County Lake County, IN
The radar
The Chicago radar (KLOT), 61 km from the middle of the area, began a volume at 19:21 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 7.3 hours before the alert went out and 179 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
- 2335 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 952 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 107 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCHI 181917 FFWCHI INC089-182000- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD AND SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHICAGO IL 219 PM CDT FRI JUL 18 1997 THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 300 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWEST INDIANA ...LAKE COUNTY AT 215 PM RADAR CONTINUED TO DECTECT A SEVERE THUNDERSTORM OVER NORTHERN LAKE COUNTY AROUND SCHERERVILLE. THE STORM WAS MOVING SOUTHEAST AT 15 MPH. RADAR INDICATED THAT THIS STORM PRODUCED OVER 3 INCHES RAIN IN EAST CHICAGO AND OTHER THUNDERSTORMS WERE CONTINUING TO DEVELOP OVER SOUTHERN COOK COUNTY WHICH WILL MOVE ACROSS NORTHERN AND CENTRAL LAKE COUNTY THROUGH 300 PM. DON'T DRIVE ACROSS FLOODED ROADS! MOST FLASH FLOOD DEATHS OCCUR IN VEHICLES.
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
Local storm report, Jul 18, 8:35 AM CDT, 5 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECT ISSUED AM FROM PM
NATIONAL WEATHER SERVICE CHICAGO IL
835 AM CDT FRI JUL 18 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0710 AM WAYNE IL WIND DAMAGE
07/18/97 DU PAGE TREES DOWN
IL59 & ARMY TRAIL RD.
0725 AM CAROL STREAM IL WIND GUST
07/18/97 DU PAGE 63 MPH MEASUREDLocal storm report, Jul 18, 8:38 AM CDT, 5 hours 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
835 PM CDT FRI JUL 18 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0710 AM WAYNE IL WIND DAMAGE
07/18/97 DU PAGE TREES DOWN
IL59 & ARMY TRAIL RD.
0725 AM CAROL STREAM IL 63 MPH WIND GUST
07/18/97 DUPAGE MEASUREDLocal storm report, Jul 18, 9:16 AM CDT, 5 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE CHICAGO IL
835 PM CDT FRI JUL 18 1997
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0710 AM WAYNE IL WIND DAMAGE
07/18/97 DU PAGE TREES DOWN
IL59 & ARMY TRAIL RD.
0725 AM CAROL STREAM IL WIND GUST
07/18/97 DU PAGE 63 MPH MEASUREDSpecial weather statement, Jul 18, 10:57 AM CDT, 3 hours 22 minutes before
ILZ003>006-008-010>014-019>023-032>033-039-INZ001>005-010>016-019>020- 191100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO IL 1100 AM CDT FRI JUL 19 1997 FOR NORTH CENTRAL AND NORTHEAST ILLINOIS AND NORTHWEST AND NORTH CENTRAL INDIANA THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS IN NORTH CENTRAL AND NORTHEAST ILLINOIS AND A SMALL PART OF NORTHWEST INDIANA THIS AFTERNOON AND TONIGHT. NO SEVERE STORMS ARE EXPECTED IN NORTH CENTRAL INDIANA. AFTERNOON TEMPERATURES OF 85 TO 90 COMBINED WITH DEWPOINT TEMPERATURES IN THE LOWER TO MIDDLE 70S WILL CREATE A VERY WARM...HUMID...UNSTABLE ATMOSPHERE OVER NORTHERN ILLINOIS AND INDIANA. A COLD FRONT PUSHING SOUTH FROM WISCONSIN AND MICHIGAN WILL REACH NORTHERN ILLINOIS AND INDIANA TOWARD EVENING. THIS WILL BE THE FOCUS OF THUNDERSTORM ACTIVITY. A STRONG JET STREAM ACROSS THE NORTHERN GREAT LAKES WILL ENHANCE THE THUNDERSTORM DEVELOPMENT. A COMPLEX OF STRONG THUNDERSTORMS WAS OVER SOUTHEAST MINNESOTA LATE THIS MORNING. IT IS EXPECTED TO CONTINUE TO PROPOGATE EAST SOUTHEAST TOWARD NORTHWEST AND NORTH CENTRAL ILLINOIS THIS AFTERNOON. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTHWEST AND NORTH CENTRAL ILLINOIS UNTILr 400 PM. ALLSOPP
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 1:12 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 63 min |
| Jul 18, 2:19 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 41 min |
| Jul 18, 3:01 PM CDT | Severe Thunderstorm Warning | LOT | Fulton, Kosciusko, Marshall | 59 min |
| Jul 18, 3:07 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 68 min |
| Jul 18, 4:07 PM CDT | Severe Thunderstorm Warning | LOT | Lake | 68 min |
| Jul 18, 4:27 PM CDT | Severe Thunderstorm Warning | LOT | Jasper, Newton, Porter | 63 min |
| Jul 18, 4:47 PM CDT | Severe Thunderstorm Warning | LOT | Benton | 58 min |
| Jul 18, 4:58 PM CDT | Severe Thunderstorm Warning | LOT | Pulaski, White | 62 min |
Nearby
Flash Flood Warnings in Indiana, 1997Every flash flood warning in 1997
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; radar from the NEXRAD Level II archive.