Alert archive / Michigan / Tornado Warnings in 2003

Tornado Warning 13, NWS Northern Indiana

August 1, 2003Branch County, Michigan

NWS Northern Indiana issued this tornado warning at Aug 1, 2003, 3:44 PM EDT for Branch County, Michigan. It was in force for 46 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: Aug 1, 2003, 3:44 PM EDT (19:44 UTC)
Expired: Aug 1, 2003, 4:30 PM EDT
In force: 46 min
Issued by: NWS Northern Indiana
Area: Counties, with a storm outline in the text

County Branch County, MI

The radar

The Northern Indiana radar (KIWX), 81 km from the middle of the area, began a volume at 19:45 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
Aug 1, 10:45 AM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 7.7 hours before the alert went out and 164 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: 212 J/kg
Mixed-layer CIN: -115 J/kg
Mixed-layer LCL: 1092 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 24 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

531 
WFUS53 KIWX 011944
TORIWX
MIC023-012030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
343 PM EDT FRI AUG 1 2003

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* TORNADO WARNING FOR...
  BRANCH COUNTY IN MICHIGAN

* UNTIL 430 PM EDT

* AT 343 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH STRONG ROTATION 4 MILES NORTH OF
  BRONSON...MOVING NORTHEAST AT 20 MPH.

* SOME LOCATIONS IN THE PATH OF THIS STORM ARE...
  COLDWATER
  BATAVIA

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. IF NO
BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM ON THE
LOWEST FLOOR AWAY FROM WINDOWS.

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 4203 8529 4182 8526 4180 8485 4208 8496

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 1, 3:14 PM EDT	Severe Thunderstorm Warning	IWX	Branch	61 min
Aug 1, 3:36 PM EDT	Severe Thunderstorm Warning	IWX	Saint Joseph	54 min
Aug 1, 3:58 PM EDT	Severe Thunderstorm Warning	IWX	Hillsdale	62 min
Aug 1, 4:32 PM EDT	Severe Thunderstorm Warning	IWX	Branch	43 min
Aug 1, 4:55 PM EDT	Tornado Warning	IWX	Hillsdale	50 min
Aug 1, 5:24 PM EDT	Severe Thunderstorm Warning	IWX	Berrien	66 min
Aug 1, 5:27 PM EDT	Severe Thunderstorm Warning	IWX	Saint Joseph	63 min
Aug 1, 6:31 PM EDT	Severe Thunderstorm Warning	IWX	Saint Joseph	59 min
Aug 1, 7:18 PM EDT	Severe Thunderstorm Warning	IWX	Berrien	42 min
Aug 1, 7:25 PM EDT	Severe Thunderstorm Warning	IWX	Cass	80 min
Aug 1, 7:27 PM EDT	Severe Thunderstorm Warning	IWX	Branch, Saint Joseph	63 min

Nearby

Tornado Warnings in Michigan, 2003 Every tornado warning in 2003 Tornadoes 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.