Alert archive / Michigan / Tornado Warnings in 1990

Tornado Warning 5, NWS Grand Rapids, MI

September 14, 1990Ionia County, Michigan

NWS Grand Rapids, MI issued this tornado warning at Sep 14, 1990, 11:09 AM EDT for Ionia County, Michigan. It was in force for 36 min.

The area

The counties it named.

The facts

Issued: Sep 14, 1990, 11:09 AM EDT (15:09 UTC)
Expired: Sep 14, 1990, 11:45 AM EDT
In force: 36 min
Issued by: NWS Grand Rapids, MI
Area: Whole counties

County Ionia County, MI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Detroit, MI (KFNT), launched 12:00Z, 3.2 hours before the alert went out and 136 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: 134 J/kg
Mixed-layer CIN: -58 J/kg
Mixed-layer LCL: 825 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 82 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 
TTAA00 KGRR 141510
TORGRR
MIC067-141545-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
1109 AM EDT FRI SEP 14 1990
 
THE NATIONAL WEATHER SERVICE IN GRAND RAPIDS HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 1145 AM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN SOUTHWEST MICHIGAN
          ...IONIA
 
AT 1100AM EDT CONFIRMED FUNNEL CLOUDS WERE REPORTED OVER BELDING...25
MILES NORTHEAST OF GRAND RAPIDS...IN SOUTHWEST LOWER MICHIGAN. THE
FUNNEL CLOUDS ARE MOVING SOUTHEAST AT 35 MPH TOWARD THE COMMUNITIES OF
ORLEANS...IONIA AND PORTLAND. IF YOU LIVE IN THESE CITIES TAKE COVER
NOW.
 
 
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
RG

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 14, 10:18 AM EDT	Tornado Warning	GRR	Kent, Montcalm	27 min
Sep 14, 11:03 AM EDT	Severe Thunderstorm Warning	GRR	Isabella	27 min
Sep 14, 11:51 AM EDT	Severe Thunderstorm Warning	GRR	Allegan, Barry, Kalamazoo, Van Buren	39 min
Sep 14, 12:13 PM EDT	Severe Thunderstorm Warning	GRR	Calhoun, Eaton	62 min
Sep 14, 12:38 PM EDT	Severe Thunderstorm Warning	GRR	Ingham	52 min
Sep 14, 12:45 PM EDT	Severe Thunderstorm Warning	GRR	Jackson	60 min

Nearby

Tornado Warnings in Michigan, 1990 Every tornado warning in 1990 Tornadoes in 1990

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.