Alert archive / Michigan / Tornado Warnings in 2001

Tornado Warning 1, NWS Grand Rapids, MI

April 11, 2001Muskegon County, Michigan

NWS Grand Rapids, MI issued this tornado warning at Apr 11, 2001, 6:52 PM EDT for Muskegon County, Michigan. It was in force for 38 min. 3 reports 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: Apr 11, 2001, 6:52 PM EDT (22:52 UTC)
Expired: Apr 11, 2001, 7:30 PM EDT
In force: 38 min
Issued by: NWS Grand Rapids, MI
Area: Whole counties

County Muskegon County, MI

What was reported inside it

Time	Report	Where	Remark
Apr 11, 7:29 PM EDT	Hail 0.75	Holton, MI
Apr 11, 7:33 PM EDT	Hail 1.75	Fruitport, MI
Apr 11, 7:40 PM EDT	Tornado F0	Cloverville, MI	Trained spotters reported a very brief tornado touchdown, that did not produce any damage. The tornado was classified as an F0, producing wind speeds in the 40 to 72 m.p.h. range.

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 nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 10.9 hours before the alert went out and 206 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: 576 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 167 m²/s²
0-3 km storm-relative helicity: 286 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.

000 
WFUS53 KGRR 112253
TORGRR
MIC121-112330-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
652 PM EDT WED APR 11 2001

THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A

* TORNADO WARNING FOR...
  MUSKEGON COUNTY IN WEST CENTRAL MICHIGAN

* UNTIL 730 PM EDT

* AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO 3 MILES WEST OF NORTON SHORES...OR ABOUT 6 MILES SOUTHWEST 
  OF MUSKEGON...MOVING EAST AT 35 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
   NORTON SHORES        AROUND 655 PM EDT
   MUSKEGON             AROUND 700 PM EDT 
   CLOVERVILLE          AROUND 700 PM EDT
   WOLF LAKE            AROUND 705 PM EDT
   SULLIVAN             AROUND 710 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 IiN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

MJS/KWG

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 6:37 PM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Ottawa	53 min
Apr 11, 7:12 PM EDT	Severe Thunderstorm Warning	GRR	Newaygo	48 min
Apr 11, 7:27 PM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Ottawa	48 min
Apr 11, 7:35 PM EDT	Tornado Warning	GRR	Ottawa	40 min
Apr 11, 7:51 PM EDT	Tornado Warning	GRR	Muskegon	24 min
Apr 11, 7:53 PM EDT	Flash Flood Warning	GRR	Muskegon, Newaygo, Oceana, Osceola	112 min

Nearby

Tornado Warnings in Michigan, 2001 Every tornado warning in 2001 Tornadoes 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.