Alert archive / Indiana / Flash Flood Warnings in 2004

Flash Flood Warning 21, NWS Chicago, IL

May 30, 20045 counties in Indiana

NWS Chicago, IL issued this flash flood warning at May 30, 2004, 12:04 PM EST for 5 counties in Indiana. It was in force for 3 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 30, 2004, 12:04 PM EST (17:04 UTC)
Expired: May 30, 2004, 3:00 PM EST
In force: 3 hr
Issued by: NWS Chicago, IL
Area: Counties, with a storm outline in the text

Counties Benton County, IN, Jasper County, IN, Lake County, IN, Newton County, IN, Porter County, IN

The radar

The Chicago radar (KLOT), 89 km from the middle of the area, began a volume at 17:13 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.

What was reported inside it

Time	Report	Where	Remark
May 30, 1:45 PM EST	FLOOD	Earl Park, IN	STREET FLOODING - ONE INCH OF RAIN IN 15 MINUTES.
May 30, 1:57 PM EST	FLOOD	Kouts, IN	STREET FLOODING.
May 30, 2:15 PM EST	FLOOD	4 Wnw Boswell, IN	RURAL ROADS FLOODED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 5.1 hours before the alert went out and 163 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1629 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 201 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 8.9

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KLOT 301706
FFWLOT
INC007-073-089-111-127-302000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHICAGO IL
1204 PM CDT SUN MAY 30 2004

THE NATIONAL WEATHER SERVICE IN CHICAGO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BENTON COUNTY IN NORTHWEST INDIANA
  JASPER COUNTY IN NORTHWEST INDIANA
  LAKE COUNTY IN NORTHWEST INDIANA
  NEWTON COUNTY IN NORTHWEST INDIANA
  PORTER COUNTY IN NORTHWEST INDIANA

* UNTIL 300 PM CDT(300 PM EST)

* AT 1204 PM CDT...WEATHER SERVICE RADAR INDICATED A LINE OF 
THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL WAS MOVING INTO THE 
WARNED AREA. RAINFALL RATES UP TO 2 INCHES PER HOUR ARE EXPECTED 
FROM THE THUNDERSTORMS.

RAPID FLOODING OF STREETS..UNDERPASSES..DRAINAGE AREAS AND BASEMENTS
WILL OCCUR. DO NOT ALLOW CHILDREN TO PLAY IN OR NEAR DRAINAGE OR
FLOODED AREAS.

RAPID FLOODING OF CREEKS...SMALL STREAMS...ROADS AND LOW LYING AREAS
WILL OCCUR. EVACUATE AND MOVE TO HIGHER GROUND IF FLOODING OCCURS.

IF YOU ENCOUNTER A FLOODED ROAD...TURN AROUND AND FIND AN ALTERNATE
ROUTE. A CAR OR SMALL TRUCK INCLUDING SUVS AND PICKUPS CAN BE SWEPT
OFF A ROAD AND INTO A STREAM BY AS LITTLE AS TWO FEET OF WATER.

LAT...LON 4166 8698 4091 8708 4052 8715 4053 8750
          4164 8749
$$

PIETRYCHA/CLK

1 follow-up statement

000 
WGUS73 KLOT 301842
FFSLOT
INC007-073-089-111-127-302000-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
140 PM CDT SUN MAY 30 2004

UNTIL 300 PM CDT (300 PM EST)...

AT 140 PM CDT (140 PM EST)...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED HEAVY RAINS CONTINUING IN THE WARNED AREA. UP TO 2 INCHES
OF RAIN HAS BEEN ESTIMATED SINCE NOON.

THE TOWNS OF VALPARAISO...ST. JOHN...SOUTH HAVEN...SCHERERVILLE AND
RENSSELAER ARE IN THE AREA OF THIS FLOODING.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF IN A FLOOD PRONE AREA...MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG CREEKS AND STREAMS ARE ESPECIALLY VULNERABLE
TO THE EFFECTS OF FLASH FLOODING. DO NOT ATTEMPT TO CROSS FLOODED
AREAS BY FOOT OR AUTOMOBILE.

REPORT FLASH FLOODING TO YOUR LOCAL ESDA...OR THE NEAREST LAW
ENFORCEMENT AGENCY...FOR RELAY TO THE NATIONAL WEATHER SERVICE. STAY
TUNED FOR LATER STATEMENTS.

LAT...LON 4163 8700 4096 8696 4085 8715 4052 8712
          4051 8753 4161 8749
$$

PIETRYCHA/KRAUSE

The office that day

Everything else NWS Chicago, IL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 12:43 PM EST	Severe Thunderstorm Warning	LOT	Benton, Jasper, Lake, Newton, Porter	92 min
May 30, 1:21 PM EST	Tornado Warning	LOT	Benton, Jasper, Newton	39 min
May 30, 5:15 PM EST	Severe Thunderstorm Warning	LOT	Jasper, Newton, Porter	45 min
May 30, 5:57 PM EST	Severe Thunderstorm Warning	LOT	Jasper	48 min
May 30, 6:18 PM EST	Tornado Warning	LOT	Jasper	42 min
May 30, 6:54 PM EST	Tornado Warning	LOT	Newton	51 min

Nearby

Flash Flood Warnings in Indiana, 2004 Every flash flood warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.