Alert archive / Michigan / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 13, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 6, 1990, 8:12 PM EDT for Kent County, Ottawa County, Michigan. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Sep 6, 1990, 8:12 PM EDT (00:12 UTC)
- Expired
- Sep 6, 1990, 9:15 PM EDT
- In force
- 63 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Kent County, MI, Ottawa 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 00:00Z, 0.2 hours before the alert went out and 201 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.
- Mixed-layer CAPE
- 629 J/kg
- Mixed-layer CIN
- -150 J/kg
- Mixed-layer LCL
- 1059 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KGRR 070012
SVRGRR
MIC139-081-070115-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
812 PM EDT THU SEP 6 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE SOUTHWEST PART OF LOWER MICHIGAN
NORTHERN OTTAWA...NORTHERN KENT
AT 805 PM EDT...WEATHER RADAR SHOWED SEVERE THUNDERSTORMS OVER
SOUTH MUSKEGON COUNTY MOVING TO THE EAST AT 40 MPH. THE STORMS
WILL BE MOVING THROUGH THE KENT COUNTY CITIES OF KENT CITY AND
SPARTA BY 830 PM...AND THE OTTAWA COUNTY CITIES OF CONKLIN AND
COOPERSVILLE. THE STORMS EXTEND ABOUT 20 MILES NORTHWEST OF THE
CITY OF GRAND RAPIDS.
IF YOU ARE CAUGHT OUTSIDE...FIND SHELTER FROM THE WEATHER IN A
STRONG BUILDING. DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
MJKWhat forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Sep 6, 7:34 PM EDT, 38 minutes before
MIZ002-003-004-009-010-013-015-016-070030- SPECIAL WEATHER STATEMENT...CORRECTION ON STORM MOVEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 730 PM EDT THU SEP 06 1990 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF SOUTHERN LOWER MICHIGAN UNTIL 11 PM EDT... AT 725 PM EDT WEATHER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN FROM SOUTHWEST OCEANA COUNTY...50 MILES NORTHWEST OF GRAND RAPIDS TO 10 MILES OFF THE MUSKEGON SHORE... 50 MILES WEST NORTHWEST OF GRAND RAPIDS. MOVEMENT WAS TO THE SOUTHWEST AT 40 MPH. THE LINE IS EXPECTED TO IN OTTAWA AND EXTREME NORTHWEST KENT COUNTY BY 800PM AND WILL BE THROUGH GRAND RAPIDS BY 830 PM. PEOPLE IN OTTAWA AND KENT COUNTY SHOULD BE ON THE ALERT FOR VERY HEAVY RAIN...DANGEROUS LIGHTNING...WIND GUSTS BETWEEN 40 AND 60 MPH AND POSSIBLE TORNADOES . ALSO OTHER THUNDERSTORMS ARE THROUGHOUT SOUTHWEST LOWER MICHIGAN. A STRONG THUNDERSTORM WAS NEAR THE CITY OF IONIA...30 MILES EAST OF GRAND RAPIDS. STAY TUNED TO WEATHER SERVICE RADIO FOR UPDATES ON THIS POTENTIALY DANGEROUS STORM SITUATION. JSB
Special weather statement, Sep 6, 7:35 PM EDT, 37 minutes before
SPECIAL WEATHER STATEMENT CORRECTED NATIONAL WEATHER SERVICE LANSING, MI 733 PM EDT THU SEP 06 1990 MIZ022-023-025-070000- ...THUNDERSTORMS MOVING THROUGH SOUTH CENTRAL LOWER MICHIGAN... AT 520PM EDT A THUNDERSTORM WAS MOVING THROUGH SOUTH CENTRAL LOWER MICHIGAN. THE STORM WAS LOCATED IN PORTIONS OF CLINTON AND NORTHERN EATON AND INGHAM COUNTIES AND WAS MOVING SOUTHEAST AT 35 MPH. NO SEVERE WEATHER HAS BEEN REPORTED WITH THIS STORM. THE THUNDERSTORM WAS PRODUCING HEAVY RAIN...GUSTY WIND...AND INTENSE LIGHTNING. SOME POWER OUTAGES HAVE BEEN REPORTED IN THE CITY OF LANSING. THERE IS A TORNADO WATCH IN EFFECT FOR ALL OF SOUTH CENTRAL LOWER MICHIGAN UNTIL 11PM EDT THIS EVENING. STAYED TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS. P.LEWI
Special weather statement, Sep 6, 7:36 PM EDT, 36 minutes before
MIZ002-003-004-009-010-013-015-016-070030- SPECIAL WEATHER STATEMENT...CORRECTION ON STORM MOVEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 730 PM EDT THU SEP 06 1990 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF SOUTHERN LOWER MICHIGAN UNTIL 11 PM EDT... AT 725 PM EDT WEATHER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN FROM SOUTHWEST OCEANA COUNTY...50 MILES NORTHWEST OF GRAND RAPIDS TO 10 MILES OFF THE MUSKEGON SHORE... 50 MILES WEST NORTHWEST OF GRAND RAPIDS. MOVEMENT WAS TO THE SOUTHEAST AT 40 MPH. THE LINE IS EXPECTED TO IN OTTAWA AND EXTREME NORTHWEST KENT COUNTY BY 800PM AND WILL BE THROUGH GRAND RAPIDS BY 830 PM. PEOPLE IN OTTAWA AND KENT COUNTY SHOULD BE ON THE ALERT FOR VERY HEAVY RAIN...DANGEROUS LIGHTNING...WIND GUSTS BETWEEN 40 AND 60 MPH AND POSSIBLE TORNADOES . ALSO OTHER THUNDERSTORMS ARE THROUGHOUT SOUTHWEST LOWER MICHIGAN. A STRONG THUNDERSTORM WAS NEAR THE CITY OF IONIA...30 MILES EAST OF GRAND RAPIDS. STAY TUNED TO WEATHER SERVICE RADIO FOR UPDATES ON THIS POTENTIALY DANGEROUS STORM SITUATION. JSB
Special weather statement, Sep 6, 7:37 PM EDT, 35 minutes before
MIZ005-006-014-070130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MUSKEGON MI 740 PM EDT THU SEP 6 1990 ...STRONG THUNDERSTORMS OVER MUSKEGON AND OCEANA COUNTIES... AT 735PM EDT A LINE OF THUNDERSTORMS...SOME WITH VERY HEAVY RAIN... DEADLY LIGHTNING...AND GUSTY WINDS EXTENDED FROM SOUTH CENTRAL OCEANA COUNTY THROUGH NORTHWEST MUSKEGON COUNTY. THESE THUNDERSTORMS WERE MOVING EAST AT 35 MILES AN HOUR AND WILL BE ARRIVING IN THE MUSKEGON AREA BY 8PM. IF THREATENING WEATHER APPROACHES YOUR AREA TAKE COVER. SMITH
Special weather statement, Sep 6, 7:57 PM EDT, 15 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LANSING, MI 751 PM EDT THU SEP 06 1990 MIZ023-025-070100- ...THUNDERSTORMS MOVING THROUGH SOUTH CENTRAL LOWER MICHIGAN... THE 745PM EDT MUSKEGON RADAR SHOWED AN AREA OF STRONG THUNDERSTORMS MOVING THROUGH SOUTH CENTRAL LOWER MICHIGAN. THIS AREA EXTENDS FROM NORTHEAST IONIA SOUTHEAST TO CENTRAL LIVINGSTON COUNTIES. THE STRONGEST THUNDERSTORM WAS LOCATED ABOUT 10 MILES EAST OF HOLT...OR 20 MILES SOUTHEAST OF LANSING. THIS AREA OF THUNDERSTORMS IS MOVING SOUTHEAST AT 35 MPH AND WILL CONTINUE TO AFFECT CLINTON AND INGHAM COUNTIES WITH HEAVY RAINS...GUSTY WINDS AND INTENSE LIGHTNING. THERE IS A TORNADO WATCH IN EFFECT FOR ALL OF SOUTH CENTRAL LOWER MICHIGAN UNTIL 11PM EDT THIS EVENING. STAYED TUNED TO NOAA WEATHER RADIO FOR LATER STATEMENTS OR POSSIBLE WARNINGS. . P.LEWIS/KALLAS
Special weather statement, Sep 6, 8:02 PM EDT, 10 minutes before
MIZ002-003-004-009-010-013-015-016-070030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 803 PM EDT THU SEP 06 1990 ...A TORNADO WATCH IS IN EFFECT FOR MUCH OF SOUTHERN LOWER MICHIGAN UNTIL 11 PM EDT... AT 800 PM EDT WEATHER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN FROM BRIDGETON IN NEWAYGO COUNTY...30 MILES NORTH NORTHWEST OF GRAND RAPIDS THROUGH MUSKEGON TO 10 MILES OFF THE GRAND HAVEN SHORE...40 MILES WEST OF GRAND RAPIDS. THE LINE WAS ABOUT 20 MILES WIDE. MOVEMENT WAS TO THE SOUTHEAST AT 40 MPH. THE LINE IS EXPECTED TO BE THROUGH GRAND RAPIDS BY 830 PM. VERY HEAVY RAIN...WIND GUSTS OF 35 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING WAS REPORTED IN SPRING LAKE...28 MILES WEST OF GRAND RAPIDS. PEOPLE IN OTTAWA AND KENT COUNTY SHOULD BE ON THE ALERT FOR VERY HEAVY RAIN...DANGEROUS LIGHTNING...WIND GUSTS BETWEEN 40 AND 60 MPH AND POSSIBLE TORNADOES . ALSO OTHER THUNDERSTORMS ARE THROUGHOUT SOUTHWEST LOWER MICHIGAN. A STRONG THUNDERSTORM WAS NEAR THE CITY OF IONIA...30 MILES EAST OF GRAND RAPIDS. STAY TUNED TO WEATHER SERVICE RADIO FOR UPDATES ON THIS POTENTIALY DANGEROUS STORM SITUATION. JSB
Nearby
Severe Thunderstorm Warnings in Michigan, 1990Every severe thunderstorm warning 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.