Alert archive / Michigan / Tornado Warnings in 2002

Tornado Warning 1, NWS Grand Rapids, MI

July 27, 2002Allegan County, Michigan

NWS Grand Rapids, MI issued this tornado warning at Jul 27, 2002, 8:46 PM EDT for Allegan County, Michigan. It was in force for 29 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
Jul 27, 2002, 8:46 PM EDT (00:46 UTC)
Expired
Jul 27, 2002, 9:15 PM EDT
In force
29 min
Issued by
NWS Grand Rapids, MI
Area
Counties, with a storm outline in the text

County Allegan County, MI

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 0.8 hours before the alert went out and 197 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 2002-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 269 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 00:00Z on 2002-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 78 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
269 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1134 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
78 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.9

Open this sounding in Storm Lab

The text

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

391 
WFUS53 KGRR 280046
TORGRR
MIC005-280115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
846 PM EDT SAT JUL 27 2002

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* TORNADO WARNING FOR...
  ALLEGAN COUNTY IN SOUTHWEST MICHIGAN

* UNTIL 915 PM EDT

* AT 845 PM EDT...THE PUBLIC REPORTED A TORNADO IN CHESHIRE TOWNSHIP 
  IN ALLEGAN COUNTY. THE STORM WAS MOVING NORTHEAST AT 20 MPH.

* TORNADO PRODUCING STORMS ARE EXPECTED TO BE NEAR...
   HOPKINS AROUND 900 PM EDT
   MARTIN AROUND 905 PM EDT
   BRADLEY...SHELBYVILLE AROUND 910 PM EDT
   DORR...WAYLAND AROUND 915 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.

IF YOU ARE IN A MOBILE HOME OR VEHICLE...EVACUATE THEM AND GET INSIDE
A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.


LAT...LON 4269 8602 4244 8599 4247 8558 4273 8559

EJO KWG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 8:38 PM EDTSevere Thunderstorm WarningGRRAllegan37 min
Jul 27, 9:15 PM EDTTornado WarningGRRAllegan30 min
Jul 27, 9:31 PM EDTSevere Thunderstorm WarningGRRBarry59 min
Jul 27, 9:48 PM EDTTornado WarningGRRAllegan, Kalamazoo27 min
Jul 27, 10:25 PM EDTTornado WarningGRRCalhoun65 min
Jul 28, 2:26 AM EDTSpecial Marine WarningGRR49 min
Jul 28, 2:26 AM EDTSpecial Marine WarningGRR49 min

Nearby

Tornado Warnings in Michigan, 2002Every tornado warning in 2002Tornadoes in 2002

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.