Alert archive / Michigan / Tornado Warnings in 2004

Tornado Warning 2, NWS Grand Rapids, MI

May 21, 2004Eaton County, Michigan

NWS Grand Rapids, MI issued this tornado warning at May 21, 2004, 1:05 PM EDT for Eaton County, Michigan. It was in force for 25 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 21, 2004, 1:05 PM EDT (17:05 UTC)
Expired: May 21, 2004, 1:30 PM EDT
In force: 25 min
Issued by: NWS Grand Rapids, MI
Area: Counties, with a storm outline in the text

County Eaton County, MI

The watch it was issued in

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

Issued	Product	Office	Lasted
May 21, 11:55 AM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 5.1 hours before the alert went out and 110 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: 899 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 81 m²/s²
0-3 km storm-relative helicity: 217 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

195 
WFUS53 KGRR 211705
TORGRR
MIC045-211730-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
104 PM EDT FRI MAY 21 2004

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* TORNADO WARNING FOR...
  EATON COUNTY IN SOUTH CENTRAL MICHIGAN

* UNTIL 130 PM EDT

* AT 101 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM PRODUCING A TORNADO OVER CHARLOTTE...MOVING
  EAST AT 50 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  PETRIEVILLE...EATON RAPIDS...DIMONDALE...WEST WINDSOR AROUND 110 PM
    EDT

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.


LAT...LON 4248 8487 4265 8488 4266 8471 4266 8461
          4247 8461

$$

JL MWH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 20, 8:54 PM EDT	Severe Thunderstorm Warning	GRR	Ionia	21 min
May 20, 9:41 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Ionia	34 min
May 20, 9:47 PM EDT	Special Marine Warning	GRR		88 min
May 20, 9:47 PM EDT	Special Marine Warning	GRR		88 min
May 20, 9:47 PM EDT	Special Marine Warning	GRR		88 min
May 20, 10:00 PM EDT	Severe Thunderstorm Warning	GRR	Eaton	75 min
May 20, 10:57 PM EDT	Severe Thunderstorm Warning	GRR	Ingham	78 min
May 20, 11:38 PM EDT	Severe Thunderstorm Warning	GRR	Jackson	52 min
May 20, 11:58 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Eaton	47 min
May 21, 12:32 AM EDT	Severe Thunderstorm Warning	GRR	Jackson	43 min
May 21, 10:35 AM EDT	Special Marine Warning	GRR		3 hr
May 21, 10:35 AM EDT	Special Marine Warning	GRR		3 hr
May 21, 10:35 AM EDT	Special Marine Warning	GRR		3 hr
May 21, 10:35 AM EDT	Special Marine Warning	GRR		3 hr
May 21, 10:35 AM EDT	Special Marine Warning	GRR		3 hr
May 21, 11:57 AM EDT	Severe Thunderstorm Warning	GRR	Allegan, Van Buren	63 min
May 21, 12:04 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Kent	56 min
May 21, 12:23 PM EDT	Tornado Warning	GRR	Barry	37 min
May 21, 12:30 PM EDT	Severe Thunderstorm Warning	GRR	Kalamazoo	75 min
May 21, 12:33 PM EDT	Severe Thunderstorm Warning	GRR	Ionia	57 min
May 21, 12:48 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Eaton	57 min
May 21, 1:09 PM EDT	Severe Thunderstorm Warning	GRR	Ingham, Jackson	51 min
May 21, 7:18 PM EDT	Special Marine Warning	GRR		72 min
May 21, 7:18 PM EDT	Special Marine Warning	GRR		72 min
May 21, 7:18 PM EDT	Special Marine Warning	GRR		72 min
May 21, 7:18 PM EDT	Special Marine Warning	GRR		72 min
May 21, 7:45 PM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Ottawa	60 min

Nearby

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