Alert archive / Indiana / Flash Flood Warnings in 1998

Flash Flood Warning 2, NWS Northern Indiana

May 3, 1998Allen County, Indiana

NWS Northern Indiana issued this flash flood warning at May 3, 1998, 5:03 PM EST for Allen County, Indiana. It was in force for 2 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
May 3, 1998, 5:03 PM EST (22:03 UTC)
Expired
May 3, 1998, 7:05 PM EST
In force
2 hr
Issued by
NWS Northern Indiana
Area
Whole counties

County Allen County, IN

The radar

The Northern Indiana radar (KIWX), 61 km from the middle of the area, began a volume at 22:03 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.1 hours before the alert went out and 214 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, Cncnati-Daytn, OH at 12:00Z on 1998-05-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 15 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, Cncnati-Daytn, OH at 12:00Z on 1998-05-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 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
15 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
654 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
0 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KFWA 032208 COR
FFWFWA
INC003-040005-

BULLETIN- EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE NORTHERN INDIANA
503 PM EST SUN MAY 3 1998

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* FLASH FLOOD WARNING FOR PEOPLE IN THE FOLLOWING LOCATION...
  CENTRAL AND SOUTHERN ALLEN COUNTY IN NORTHEASTERN INDIANA

* UNTIL 705 PM EST

* AT 500 PM EST... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF THUNDERSTORMS WITH VERY HEAVY RAIN FROM MONROEVILLE TO
  FORT WAYNE... MOVING SLOWLY WEST AT 10 MPH.

* DOPPLER RADAR INDICATES THAT OVER 3 INCHES OF RAIN HAS FALLEN THE
  PAST 2 HOURS

IF YOU ARE IN THESE AREAS... BE PREPARED TO MOVE TO HIGHER GROUND.
DO NOT DRIVE ACROSS FLOODED ROADS!

TEH/JM!
CORRECTED STORM MOTION

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 3, 3:21 PM ESTTornado WarningIWXAllen34 min
May 3, 4:00 PM ESTSevere Thunderstorm WarningIWXKosciusko35 min
May 3, 4:10 PM ESTSevere Thunderstorm WarningIWXFulton35 min
May 3, 4:37 PM ESTTornado WarningIWXHuntington33 min
May 3, 5:00 PM ESTTornado WarningIWXAllen35 min
May 3, 5:34 PM ESTTornado WarningIWXAllen36 min
May 3, 5:47 PM ESTSevere Thunderstorm WarningIWXKosciusko, Whitley33 min
May 3, 6:34 PM ESTSevere Thunderstorm WarningIWXKosciusko36 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; radar from the NEXRAD Level II archive.