Alert archive / Michigan / Tornado Warnings in 2001

Tornado Warning 9, NWS Detroit, MI

October 24, 2001Saginaw County, Michigan

NWS Detroit, MI issued this tornado warning at Oct 24, 2001, 4:08 PM EDT for Saginaw County, Michigan. It was in force for 67 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Oct 24, 2001, 4:08 PM EDT (20:08 UTC)
Expired
Oct 24, 2001, 5:15 PM EDT
In force
67 min
Issued by
NWS Detroit, MI
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Saginaw County, MI

The radar

The Detroit radar (KDTX), 88 km from the middle of the area, began a volume at 20:11 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

Detroit, MI (KDTX), launched 12:00Z, 8.1 hours before the alert went out and 88 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 12:00Z on 2001-10-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 227 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2001-10-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 105 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
227 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
511 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
105 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.7

Open this sounding in Storm Lab

The text

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

419 
WFUS53 KDTX 242008
TORDTX
MIC145-242115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
408 PM EDT WED OCT 24 2001

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* TORNADO WARNING FOR...
  SAGINAW COUNTY IN SOUTHEAST MICHIGAN

* UNTIL 515 PM EDT

* AT 406 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  DEVELOPING TORNADO 4 MILES EAST OF FENMORE...OR 12 MILES NORTHWEST
  OF OWOSSO...MOVING EAST AT 40 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  CHESANING...NELSON AT 415 PM EDT
  ST. CHARLES AT 420 PM EDT
  SHIELDS AT 430 PM EDT
  BURT...FOSTERS...SAGINAW AT 435 PM EDT
  BIRCH RUN...BRIDGEPORT...ZILWAUKEE AT 440 PM EDT

IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IN A HOME OR
BUSINESS IS AN INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID
WINDOWS.

LAT...LON 4333 8441 4313 8438 4324 8369 4357 8381

WAG JW

The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 24, 4:01 PM EDTSevere Thunderstorm WarningDTXSaginaw74 min
Oct 24, 4:02 PM EDTSpecial Marine WarningDTX88 min
Oct 24, 4:53 PM EDTTornado WarningDTXTuscola67 min
Oct 24, 6:48 PM EDTSevere Thunderstorm WarningDTXLenawee57 min
Oct 24, 7:01 PM EDTSevere Thunderstorm WarningDTXLivingston, Washtenaw59 min
Oct 24, 7:45 PM EDTSevere Thunderstorm WarningDTXMonroe45 min

Nearby

Tornado Warnings in Michigan, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.