Alert archive / Indiana / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 7, NWS Indianapolis, IN

March 20, 2003Marion County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Mar 20, 2003, 4:41 PM EST for Marion County, Indiana. It was in force for 34 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, 4:41 PM EST (21:41 UTC)
Expired: Mar 20, 2003, 5:15 PM EST
In force: 34 min
Issued by: NWS Indianapolis, IN
Area: Counties, with a storm outline in the text

County Marion County, IN

The radar

The Indianapolis radar (KIND), 19 km from the middle of the area, began a volume at 21:42 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
Mar 20, 2:05 PM EST	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.7 hours before the alert went out and 196 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: 1227 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: -21 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.

738 
WUUS53 KIND 202141
SVRIND
INC097-202215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
441 PM EST THU MAR 20 2003

THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN MARION COUNTY IN CENTRAL INDIANA

* UNTIL 515 PM EST

* AT 432 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER EXTREME SOUTHEASTERN MARION COUNTY...OR
  ABOUT 13 MILES SOUTHEAST OF INDIANAPOLIS...MOVING EAST AT 30 MPH.

HAIL UP TO DIME SIZE INCHES IN DIAMETER HAS BEEN REPORTED WITH THIS 
STORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A 
GARAGE AND MOVE TO A SUBSTANTIAL SHELTER.

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

LAT...LON 3971 8610 3965 8609 3967 8597 3981 8603

$$

JK

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 20, 1:28 PM EST	Severe Thunderstorm Warning	IND	Carroll	32 min
Mar 20, 1:30 PM EST	Severe Thunderstorm Warning	IND	Carroll	30 min
Mar 20, 2:01 PM EST	Severe Thunderstorm Warning	IND	Boone, Hamilton	44 min
Mar 20, 2:30 PM EST	Severe Thunderstorm Warning	IND	Tipton	45 min
Mar 20, 2:37 PM EST	Severe Thunderstorm Warning	IND	Morgan	43 min
Mar 20, 3:31 PM EST	Severe Thunderstorm Warning	IND	Hamilton	44 min
Mar 20, 4:55 PM EST	Severe Thunderstorm Warning	IND	Henry	35 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.