Alert archive / Michigan / Tornado Warnings in 2001

Tornado Warning 6, NWS Grand Rapids, MI

April 11, 2001Muskegon County, Michigan

NWS Grand Rapids, MI issued this tornado warning at Apr 11, 2001, 11:58 PM EDT for Muskegon County, Michigan. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 11, 2001, 11:58 PM EDT (03:58 UTC)
Expired: Apr 12, 2001, 12:15 AM EDT
In force: 17 min
Issued by: NWS Grand Rapids, MI
Area: Whole counties

County Muskegon 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
Apr 11, 7:15 PM EDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.0 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: 737 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: 33 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 120358
TORGRR
MIC121-120415-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1158 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 1215 AM EDT

* AT 1152 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  TORNADO OVER SLOCUM...OR ABOUT 13 MILES EAST OF MUSKEGON...MOVING
  NORTHEAST AT 60 MPH.

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 RO0OM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 8:06 PM EDT	Tornado Warning	GRR	Kent	29 min
Apr 11, 8:36 PM EDT	Severe Thunderstorm Warning	GRR	Mecosta, Montcalm	39 min
Apr 11, 9:51 PM EDT	Flash Flood Warning	GRR	Muskegon	3 hr
Apr 11, 11:21 PM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Ottawa	39 min
Apr 11, 11:36 PM EDT	Severe Thunderstorm Warning	GRR	Newaygo	24 min
Apr 11, 11:45 PM EDT	Tornado Warning	GRR	Newaygo	30 min
Apr 12, 12:09 AM EDT	Severe Thunderstorm Warning	GRR	Kent	36 min
Apr 12, 12:14 AM EDT	Severe Thunderstorm Warning	GRR	Mecosta, Montcalm	31 min
Apr 12, 12:19 AM EDT	Tornado Warning	GRR	Newaygo	26 min
Apr 12, 12:25 AM EDT	Severe Thunderstorm Warning	GRR	Osceola	35 min
Apr 12, 12:29 AM EDT	Tornado Warning	GRR	Mecosta	31 min
Apr 12, 12:42 AM EDT	Severe Thunderstorm Warning	GRR	Clare, Isabella	48 min
Apr 12, 12:57 AM EDT	Tornado Warning	GRR	Clare, Osceola	33 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; the sounding from the Mesonet's radiosonde archive.