Alert archive / Indiana / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 2, NWS Northern Indiana

March 20, 2003Marshall County, Indiana

NWS Northern Indiana issued this severe thunderstorm warning at Mar 20, 2003, 12:53 PM EST for Marshall County, Indiana. It was in force for 37 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: Mar 20, 2003, 12:53 PM EST (17:53 UTC)
Expired: Mar 20, 2003, 1:30 PM EST
In force: 37 min
Issued by: NWS Northern Indiana
Area: Counties, with a storm outline in the text

County Marshall County, IN

The radar

The Northern Indiana radar (KIWX), 55 km from the middle of the area, began a volume at 17:53 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 12:00Z, 5.9 hours before the alert went out and 230 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1360 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 156 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.

067 
WUUS53 KIWX 201753
SVRFWA
INC099-201830-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
1251 PM EST THU MAR 20 2003

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

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

* UNTIL 130 PM EST

* AT 1251 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES SOUTHWEST OF PLYMOUTH...MOVING
  NORTHEAST AT 25 MPH.

* SOME LOCATIONS IN THE PATH OF THIS SEVERE THUNDERSTORM ARE...
  PLYMOUTH
  LA PAZ
  TWIN LAKES

THREE QUARTER INCH DIAMETER SIZE HAIL OR LARGER IS LIKELY WITH THIS 
SEVERE STORM 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 4129 8647 4117 8636 4141 8614 4152 8637

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 20, 12:10 PM EST	Severe Thunderstorm Warning	IWX	LaPorte	50 min
Mar 20, 1:07 PM EST	Severe Thunderstorm Warning	IWX	Kosciusko, Noble, Whitley	38 min
Mar 20, 1:46 PM EST	Severe Thunderstorm Warning	IWX	Whitley	29 min
Mar 20, 2:04 PM EST	Severe Thunderstorm Warning	IWX	LaGrange	41 min
Mar 20, 2:15 PM EST	Severe Thunderstorm Warning	IWX	Noble	45 min
Mar 20, 2:42 PM EST	Severe Thunderstorm Warning	IWX	Allen, Huntington, Whitley	48 min
Mar 20, 3:07 PM EST	Severe Thunderstorm Warning	IWX	DeKalb, Noble, Steuben	53 min
Mar 20, 3:16 PM EST	Severe Thunderstorm Warning	IWX	Huntington	44 min
Mar 20, 3:32 PM EST	Severe Thunderstorm Warning	IWX	Allen	43 min
Mar 20, 3:42 PM EST	Severe Thunderstorm Warning	IWX	Wells	48 min
Mar 20, 4:06 PM EST	Tornado Warning	IWX	Wells	39 min
Mar 20, 4:15 PM EST	Severe Thunderstorm Warning	IWX	Steuben	60 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2003 Every severe thunderstorm warning in 2003

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.