Alert archive / Indiana / Tornado Warnings in 2001

Tornado Warning 31, NWS Northern Indiana

November 24, 2001Allen County, DeKalb County, Indiana

NWS Northern Indiana issued this tornado warning at Nov 24, 2001, 9:08 PM EST for Allen County, DeKalb County, Indiana. It was in force for 37 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Nov 24, 2001, 9:08 PM EST (02:08 UTC)
Expired
Nov 24, 2001, 9:45 PM EST
In force
37 min
Issued by
NWS Northern Indiana
Area
Whole counties

Counties Allen County, IN, DeKalb County, IN

The radar

The Northern Indiana radar (KIWX), 57 km from the middle of the area, began a volume at 02:10 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

TimeReportWhereRemark
Nov 24, 9:40 PM ESTThunderstorm WindArcola, INPublic reported 2 barns destroyed in Arcola.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

IssuedProductOfficeLasted
Nov 24, 8:00 PM ESTTornado WatchSPC5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 2.1 hours before the alert went out and 211 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-pSkew-T log-p diagram, Detroit, MI at 00:00Z on 2001-11-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 00:00Z on 2001-11-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 91 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
625 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
91 m²/s²
0-3 km storm-relative helicity
130 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.

524 
WFUS53 KIWX 250208
TORFWA
INC003-033-250245-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
908 PM EST SAT NOV 24 2001

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN ALLEN COUNTY IN INDIANA
  DE KALB COUNTY IN INDIANA

* UNTIL 945 PM EST

* AT 908 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  A POSSIBLE TORNADO 6 MILES SOUTHEAST OF HUNTERTOWN...MOVING
  NORTHEAST AT 50 MPH.

* SOME LOCATIONS IN THE PATH OF THIS TORNADO ARE...
  AUBURN
  ST. JOE
  WATERLOO
  BUTLER
  HAMILTON

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 24, 9:19 PM ESTTornado WarningIWXAdams, Wells31 min
Nov 24, 9:42 PM ESTTornado WarningIWXAllen38 min

Nearby

Tornado Warnings in Indiana, 2001Every tornado warning in 2001Tornadoes in 2001

Sources

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