Alert archive / Indiana / Flash Flood Warnings in 1996
Flash Flood Warning 16, NWS Chicago, IL
NWS Chicago, IL issued this flash flood warning at Jul 18, 1996, 9:42 AM CDT for Lake County, Porter County, Indiana. It was in force for 8 hr. 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, 1996, 9:42 AM CDT (14:42 UTC)
- Expired
- Jul 18, 1996, 6:00 PM CDT
- In force
- 8 hr
- Issued by
- NWS Chicago, IL
- Area
- Whole counties
Counties Lake County, IN, Porter County, IN
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 2.7 hours before the alert went out and 273 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
- 1244 J/kg
- Mixed-layer CIN
- -173 J/kg
- Mixed-layer LCL
- 970 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 270 m²/s²
- 0-3 km storm-relative helicity
- 282 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 6.3
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, Jul 18, 5:58 AM CDT, 3 hours 44 minutes before
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-181600- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO IL 600 AM CDT THU JUL 18 1996 THIS OUTLOOK PERTAINS TO THE FOLLOWING COUNTIES IN NORTHERN ILLINOIS: BOONE-COOK-DE KALB-DU PAGE-FORD-GRUNDY-IROQUOIS-KANE-KANKAKEE- KENDALL-LA SALLE-LAKE-LEE-LIVINGSTON-MCHENRY-OGLE-WILL-WINNEBAGO- AND LAKE COUNTY IN INDIANA INCLUDING THE CITIES OF AURORA...BELVIDERE...CHICAGO...DE KALB... DIXON...GARY IN...JOLIET...KANKAKEE...MORRIS...OTTAWA...PONTIAC... ROCHELLE...ROCKFORD...WATSEKA...WAUKEGAN...WHEATON...WOODSTOCK THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ACROSS THE AREA THIS AFTERNOON AND TONIGHT. A STRONG LOW PRESSURE SYSTEM CENTERED OVER EXTREME NORTHWEST MINNESOTA THIS MORNING WILL MOVE TO NORTHERN MICHIGAN TONIGHT. A TRAILING COLD FRONT WILL EXTEND THIS EVENING FROM THE LOW PRESSURE CENTER /OVER NORTHERN MICHIGAN/ TO CENTRAL IOWA. THUNDERSTORMS ARE FORECAST TO DEVELOP IN WARM AND HUMID AIR AHEAD OF THE ADVANCING COLD FRONT THIS AFTERNOON AND TONIGHT...AND THOSE STORMS MAY BECOME SEVERE. KOENEMAN
Special weather statement, Jul 18, 7:00 AM CDT, 2 hours 42 minutes before
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-181300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 655 AM CDT THU JUL 18 1996 ...STORM TOTAL RAINFALL REPORTS AS OF 650 AM CDT... TORRENTIAL RAINFALL CONTINUED ALL NIGHT ACROSS THE WESTERN AND SOUTHWESTERN SUBURBS. RADAR ESTIMATES INDICATED A LARGE AREA OF SOUTHERN KANE COUNTY RECEIVED OVER 12.00 INCHES OF RAIN SINCE YESTERDAY. HARDEST HIT WAS THE AURORA AREA. RAINFALL REPORTS FROM OBSERVERS: LOCATION ENDING TIME AMOUNT REMARKS AURORA 530 AM 14.5 IN RAIN GAUGE OVERFLOWED JOLIET 635 AM 11.23 ELBURN 530 AM 11.00 W NAPERVILLE 510 AM 9.87 JOLIET 620 AM 8.95 MIDWAY 650 AM 7.69 ALL TIME 24 HR RECORD THESE TOTALS AND ADDITIONAL REPORTS WILL BE UPDATED AS FURTHER REPORTS ARE RECEIVED. HALLER
Special weather statement, Jul 18, 8:21 AM CDT, 1 hour 21 minutes before
ILZ003>006-008-010>014-019>023-032-033-039-INZ001-181400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHICAGO IL 815 AM CDT THU JUL 18 1996 ...STORM TOTAL RAINFALL REPORTS AS OF 800 AM CDT... LOCATION ENDING TIME AMOUNT REMARKS W NAPERVILL 510 AM 9.87 IN ELBURN 530 AM 11.00 AURORA 530 AM 14.50 RAIN GAUGE OVERFLOWED MIDWAY 650 AM 7.69 ALL TIME 24 HR RECORD JOLIET 700 AM 11.23 JOLIET 700 AM 9.30 JOLIET 710 AM 8.95 DARIEN 720 AM 7.02 JOLIET 720 AM 8.71 JOLIET 720 AM 10.25 ROMEOVILLE 800 AM 10.38 NWS OFFICE THESE TOTALS A6ND ADDITIONAL REPORTS WILL BE UPDATED AS FURTHER REPORTS ARE RECEIVED. HALLER
The office that day
Everything else NWS Chicago, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 17, 9:07 PM CDT | Severe Thunderstorm Warning | LOT | Lee | 53 min |
| Jul 17, 11:10 PM CDT | Flash Flood Warning | LOT | Winnebago | 3 hr |
| Jul 18, 1:42 AM CDT | Flash Flood Warning | LOT | Cook, DuPage, Kane, Kendall, Will | 2 hr |
| Jul 18, 4:02 AM CDT | Flash Flood Warning | LOT | Cook, Will | 3 hr |
| Jul 18, 4:02 AM CDT | Flash Flood Warning | LOT | DeKalb, Kane, Kendall | 3 hr |
| Jul 18, 4:02 AM CDT | Flash Flood Warning | LOT | DuPage | 3 hr |
| Jul 18, 9:42 AM CDT | Flash Flood Warning | LOT | DeKalb, Ogle, Winnebago | 8 hr |
| Jul 18, 9:42 AM CDT | Flash Flood Warning | LOT | Cook, DuPage, Kane, Kendall, Will | 8 hr |
| Jul 18, 6:00 PM CDT | Flash Flood Warning | LOT | Cook, DuPage, Kane, Kendall, Will | 6 hr |
| Jul 18, 9:42 AM CDT | Flash Flood Warning | LOT | LaPorte, Marshall, Saint Joseph, Starke | 8 hr |
Nearby
Flash Flood Warnings in Indiana, 1996Every flash flood warning in 1996
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.