Alert archive / Illinois / Flash Flood Warnings in 1997

Flash Flood Warning 1, NWS Lincoln, IL

June 12, 1997Douglas County, Illinois

NWS Lincoln, IL issued this flash flood warning at Jun 12, 1997, 7:34 PM CDT for Douglas County, Illinois. It was in force for 116 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
Jun 12, 1997, 7:34 PM CDT (00:34 UTC)
Expired
Jun 12, 1997, 9:30 PM CDT
In force
116 min
Issued by
NWS Lincoln, IL
Area
Whole counties

County Douglas County, IL

The radar

The Lincoln radar (KILX), 104 km from the middle of the area, began a volume at 00:35 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 00:00Z, 0.6 hours before the alert went out and 53 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.

Skew-T log-pSkew-T log-p diagram, Lincoln, IL at 00:00Z on 1997-06-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1256 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 00:00Z on 1997-06-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 80 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1256 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
613 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
80 m²/s²
0-3 km storm-relative helicity
112 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSPI 130036
FFWSPI
ILC041-130230-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LINCOLN IL
734 PM CDT THU JUN 12 1997

* FLASH FLOOD WARNING FOR
  DOUGLAS COUNTY - IN EAST CENTRAL ILLINOIS

* UNTIL 930 PM CDT
 
* SOME AREAS AFFECTED
  TUSCOLA
  NEWMAN

THUNDERSTORMS CONTINUE TO PRODUCE HEAVY RAINFALL AMOUNTS...AND ARE
EXPECTED TO PERSIST FOR AT LEAST THE NEXT HOUR.  RADAR HAS
ESTIMATED 2 TO 3 INCHES OF RAIN IN THESE AREAS SO FAR.  FLASH
FLOODING IS EXPECTED TO CONTINUE BEYOND THE END OF THE RAIN

MOVE TO HIGHER GROUND IMMEDIATELY IF FLOODWATERS THREATEN AND AVOID
DRIVING ACROSS FLOODED ROADS.

HEDGES

Nearby

Flash Flood Warnings in Illinois, 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.