Alert archive / Indiana / Flash Flood Warnings in 1998

Flash Flood Warning 30, NWS Indianapolis, IN

July 7, 1998Daviess County, Knox County, Sullivan County, Indiana

NWS Indianapolis, IN issued this flash flood warning at Jul 7, 1998, 3:16 PM EST for Daviess County, Knox County, Sullivan County, Indiana. It was in force for 4 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 7, 1998, 3:16 PM EST (20:16 UTC)
Expired
Jul 7, 1998, 7:20 PM EST
In force
4 hr
Issued by
NWS Indianapolis, IN
Area
Whole counties

Counties Daviess County, IN, Knox County, IN, Sullivan County, IN

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.3 hours before the alert went out and 185 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 12:00Z on 1998-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 943 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 12:00Z on 1998-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
943 J/kg
Mixed-layer CIN
-66 J/kg
Mixed-layer LCL
1078 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
90 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KIND 072017
FFWIND
INC027-083-153-080020-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
316 PM EST TUE JUL 7 1998

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  DAVIESS COUNTY IN SOUTHWESTERN INDIANA
  KNOX COUNTY IN SOUTHWESTERN INDIANA
  SULLIVAN COUNTY IN SOUTHWESTERN INDIANA

* UNTIL 720 PM EST

* AT 315 PM EST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH VERY HEAVY RAIN 10 MILES WEST OF VINCENNES NEAR
  LAWRENCEVILLE ILLINOIS... MOVING EAST AT 25 MPH.

* THUNDERSTORMS WILL MOVE ACROSS THE AREA LATE THIS AFTERNOON AND
  EARLY THIS EVENING...PRODUCING RAINFALL OF ONE TO TWO INCHES PER
  HOUR. THE GROUND IS ALREADY SATURATED FROM RAINFALL THIS MORNING
  OF AROUND THREE INCHES IN THE VINCENNES AREA.

DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD!

ZIMMERMAN

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 7, 3:24 PM ESTSevere Thunderstorm WarningINDKnox46 min

Nearby

Flash Flood Warnings in Indiana, 1998Every flash flood warning in 1998

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.