Alert archive / Michigan / Tornado Warnings in 2004

Tornado Warning 20, NWS Detroit, MI

May 23, 2004Lapeer County, Michigan

NWS Detroit, MI issued this tornado warning at May 23, 2004, 6:12 PM EDT for Lapeer County, Michigan. It was in force for 78 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
May 23, 2004, 6:12 PM EDT (22:12 UTC)
Expired
May 23, 2004, 7:30 PM EDT
In force
78 min
Issued by
NWS Detroit, MI
Area
Counties, with a storm outline in the text

County Lapeer County, MI

The radar

The Detroit radar (KDTX), 57 km from the middle of the area, began a volume at 22:14 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.

IssuedProductOfficeLasted
May 23, 4:50 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.2 hours before the alert went out and 54 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 2004-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 123 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 2004-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.19395878Sfc1 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
123 J/kg
Mixed-layer CIN
-175 J/kg
Mixed-layer LCL
589 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
224 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.3

Open this sounding in Storm Lab

The text

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

000 
WFUS53 KDTX 232212
TORDTX
MIC087-232330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
611 PM EDT SUN MAY 23 2004

THE NATIONAL WEATHER SERVICE IN DETROIT/PONTIAC HAS ISSUED A

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

* UNTIL 730 PM EDT

* AT 609 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
  A SEVERE THUNDERSTORM WITH A REPORTED TORNADO 20 MILES WEST OF
  LAPEER...OR JUST NORTH OF FLINT...MOVING EAST AT 25 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  LAPEER AROUND 655 PM EDT
  8 MILES SOUTH OF NORTH BRANCH AROUND 710 PM EDT

THIS STORM HAS PRODUCED TORNADOES AND MAY DO SO AGAIN...SO IT IS
ADVISABLE TO MOVE TO SHELTER NOW...BEFORE LIFE THREATENING WEATHER
REACHES YOUR AREA.

LAT...LON 4324 8346 4301 8346 4302 8299 4329 8301
          4332 8335 4324 8335

$$

BT / WAG

The office that day

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

IssuedProductOfficeCountiesLasted
May 23, 4:56 PM EDTSevere Thunderstorm WarningDTXShiawassee94 min
May 23, 5:18 PM EDTSevere Thunderstorm WarningDTXLenawee72 min
May 23, 5:25 PM EDTSevere Thunderstorm WarningDTXGenesee80 min
May 23, 5:35 PM EDTTornado WarningDTXLivingston55 min
May 23, 5:37 PM EDTTornado WarningDTXShiawassee53 min
May 23, 5:45 PM EDTTornado WarningDTXGenesee60 min
May 23, 6:00 PM EDTSpecial Marine WarningDTX60 min
May 23, 6:03 PM EDTSevere Thunderstorm WarningDTXWayne57 min
May 23, 6:06 PM EDTSevere Thunderstorm WarningDTXMonroe39 min
May 23, 6:20 PM EDTSevere Thunderstorm WarningDTXSanilac85 min
May 23, 6:24 PM EDTSpecial Marine WarningDTX2 hr
May 23, 6:30 PM EDTSevere Thunderstorm WarningDTXTuscola60 min
May 23, 6:37 PM EDTTornado WarningDTXSanilac68 min
May 23, 6:47 PM EDTSevere Thunderstorm WarningDTXMacomb58 min
May 23, 6:55 PM EDTSevere Thunderstorm WarningDTXOakland, Wayne80 min
May 23, 6:58 PM EDTSevere Thunderstorm WarningDTXSaint Clair62 min
May 23, 7:18 PM EDTSpecial Marine WarningDTX57 min
May 23, 7:28 PM EDTSevere Thunderstorm WarningDTXShiawassee62 min
May 23, 7:29 PM EDTSpecial Marine WarningDTX61 min
May 23, 7:31 PM EDTSevere Thunderstorm WarningDTXGenesee74 min
May 23, 7:38 PM EDTSevere Thunderstorm WarningDTXMacomb22 min
May 23, 7:55 PM EDTSevere Thunderstorm WarningDTXLapeer80 min
May 23, 7:57 PM EDTSevere Thunderstorm WarningDTXSaint Clair93 min

Nearby

Tornado Warnings in Michigan, 2004Every tornado warning in 2004Tornadoes in 2004

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.