Alert archive / Indiana / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 21, NWS Northern Indiana

May 7, 2004Cass County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at May 7, 2004, 8:34 AM EST for Cass County, Indiana. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: May 7, 2004, 8:34 AM EST (13:34 UTC)
Expired: May 7, 2004, 9:15 AM EST
In force: 41 min
Issued by: NWS Northern Indiana
Area: Counties, with a storm outline in the text

County Cass County, IN

The radar

The Northern Indiana radar (KIWX), 88 km from the middle of the area, began a volume at 13:33 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 7, 8:30 AM EST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 1.6 hours before the alert went out and 200 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: 574 J/kg
Mixed-layer CIN: -327 J/kg
Mixed-layer LCL: 994 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 68 m²/s²
0-3 km storm-relative helicity: 170 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.

373 
WUUS53 KIWX 071334
SVRIWX
INC017-071415-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
834 AM EST FRI MAY 7 2004

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CASS COUNTY IN INDIANA

* UNTIL 915 AM EST

* AT 834 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS ALONG A LINE EXTENDING FROM 21 MILES
  WEST OF ROYAL CENTER TO 12 MILES SOUTHWEST OF ROYAL CENTER TO 23
  MILES SOUTHWEST OF LOGANSPORT...MOVING EAST AT 60 MPH.

* SOME LOCATIONS IN THE PATH OF THIS LINE OF SEVERE THUNDERSTORMS...
  ROYAL CENTER
  LOGANSPORT
  WALTON
  ONWARD

WINDS IN EXCESS OF 60 MPH ARE LIKELY WITH THIS LINE OF SEVERE 
STORMS SEEK SHELTER IMMEDIATELY

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN NORTHERN INDIANA.

LAT...LON 4090 8656 4089 8621 4073 8622 4058 8616
          4058 8637 4071 8637 4074 8658

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 8:45 PM EST	Severe Thunderstorm Warning	IWX	LaGrange	60 min
May 6, 8:53 PM EST	Severe Thunderstorm Warning	IWX	Elkhart	52 min
May 6, 9:04 PM EST	Severe Thunderstorm Warning	IWX	Marshall, Starke	56 min
May 6, 9:26 PM EST	Severe Thunderstorm Warning	IWX	Kosciusko	64 min
May 6, 9:40 PM EST	Severe Thunderstorm Warning	IWX	DeKalb	65 min
May 6, 10:21 PM EST	Severe Thunderstorm Warning	IWX	Steuben	54 min
May 7, 7:28 AM EST	Severe Thunderstorm Warning	IWX	Allen	47 min
May 7, 7:33 AM EST	Severe Thunderstorm Warning	IWX	Whitley	42 min
May 7, 8:05 AM EST	Severe Thunderstorm Warning	IWX	White	40 min
May 7, 8:14 AM EST	Severe Thunderstorm Warning	IWX	Allen, DeKalb	61 min
May 7, 8:28 AM EST	Severe Thunderstorm Warning	IWX	Fulton, Kosciusko	47 min
May 7, 8:54 AM EST	Severe Thunderstorm Warning	IWX	Miami	51 min
May 7, 9:09 AM EST	Severe Thunderstorm Warning	IWX	Grant, Wabash	51 min
May 7, 9:10 AM EST	Severe Thunderstorm Warning	IWX	Grant, Wabash	50 min
May 7, 9:27 AM EST	Severe Thunderstorm Warning	IWX	Huntington	48 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2004 Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.