Alert archive / Michigan / Tornado Warnings in 1991
Tornado Warning 3, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this tornado warning at Jul 7, 1991, 7:09 PM EDT for Allegan County, Van Buren County, Michigan. It was in force for 36 min.
The area
The counties it named.
The facts
- Issued
- Jul 7, 1991, 7:09 PM EDT (23:09 UTC)
- Expired
- Jul 7, 1991, 7:45 PM EDT
- In force
- 36 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Whole counties
Counties Allegan County, MI, Van Buren County, MI
The nearest sounding before it
Detroit, MI (KFNT), launched 12:00Z, 11.2 hours before the alert went out and 222 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
- 1038 J/kg
- Mixed-layer CIN
- -84 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KGRR 072309
TORGRR
MIC005-159-072345-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
709 PM EDT SUN JUL 7 1991
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 745 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE SOUTHWEST PART OF LOWER MICHIGAN
ALLEGAN...VAN BUREN
AT 705 PM EDT...WEATHER RADAR INDICATED TORNADOES 5 MILES NORTH OF
SOUTH HAVEN...AND OVER NORTH BERRIEN COUNTY MOVING TO VAN BUREN
COUNTY. THE STORMS PRODUCING THE TORNADO SIGNATURES WERE MOVING TO
THE EAST AT 50 MPH.
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE TO BE IS IN
A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...FIND SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
MJKWhat forecasters said that day
The local office's own words before this tornado 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, Jul 7, 1:49 PM EDT, 5 hours 20 minutes before
MIZ013-004-016-015-003-010-009-002-071850- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 148 PM EDT THU JUL 4 1991 ...INTENSE THUNDERSTORMS OVER SOUTHWEST LOWER MICHIGAN... AT 140 PM EDT...WEATHER RADAR SHOWED AN INTENSE THUNDERSTORM OVER THE CITY OF HOLLAND...25 MILES WEST SOUTHWEST OF GRAND RAPIDS. OTHER STRONG THUNDERSTORMS WERE NEAR GREEN LAKE AND THE CITY OF PARCHMENT. THE STROMS WERE MOVING TO THE EAST AT 40 MPH. THE STORM OVER HOLLAND WILL REACH THE NORTH DORR AREA BY 215 PM EDT. PERSONS IN SOUTHWEST LOWER MICHIGAN SHOULD BE PREPARED FOR BRIEF HEAVY RAIN...SMALL HAIL...STRONG GUSTY WINDS...AND DANGEROUS CLOUD TO GROUND LIGHTNING. IF YOU ARE OUTDOORS...MOVE INCDOORS BEFORE THE THUNDERSTORMS APPROACH YOUR AREA. MJK
Special weather statement, Jul 7, 5:49 PM EDT, 1 hour 20 minutes before
MIZ013-004-016-015-003-010-009-002-072245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE GRAND RAPIDS MI 548 PM EDT THU JUL 4 1991 ...TORNADO WATCH IN EFFECT UNTIL 1100 PM EDT... ...STRONG THUNDERSTORMS APPROACHING THE EAST SHORE OF LAKE MICHIGAN... AT 543 PM EDT...WEATHER RADAR SHOWED A LINE OF STRONG THUNDERSTORMS APPROACHING THE EAST SHORE OF LAKE MICHIGAN. THE LINE WAS JUST OFFSHORE GRAND HAVEN...TO 15 MILES WEST OF ST. JOSEPH. THE LINE WAS MOVING TO THE EAST AT 50 MPH AND WILL REACH THE CITIES OF COOPERSVILLE AND PAW PAW BY 615 PM EDT. THESE STORMS HAVE A HISTORY OF PRODUCING VERY STRONG WINDS...HAIL...AND TORNADOES. PERSONS IN SOUTHWEST LOWER MICHIGAN SHOULD BE ON THE LOOKOUT FOR POSSIBLE SEVERE WEATHER. IF SEVERE WEATHER IS SIGHTED IN YOUR AREA... TAKE COVER IMMEDIATELY. AFTER THE WEATHER HAS PASSED...NOTIFY YOUR NEAREST LAW ENFORCEMENT AGENCY. MJK
Special weather statement, Jul 7, 6:26 PM EDT, 43 minutes before
MIZ011-012-018-020-022-023-025-040-041-080100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LANSING MI 625 PM EDT SUN JUL 7 1991 ...TORNADO WATCH IN EFFECT FOR SOUTH CENTRAL LOWER MICHIGAN UNTIL 1100 PM EDT... AT 600 PM EDT...WEATHER RADAR SHOWED STRONG THUNDERSTORMS EXTENDING ACROSS MUCH OF CENTRAL AND SOUTHERN LAKE MICHIGAN...JUST REACHING THE SHORE NEAR MUSKEGON. THE LINE OF STORMS WAS MOVING TO THE EAST AT 45 TO 50 MPH. AROUND SOUTH CENTRAL LOWER MICHIGAN...SKIES WERE MOSTLY SUNNY WITH TEMPERATURES IN THE UPPER 80S TO NEAR 90. THE WIND WAS FROM THE SOUTH- WEST AT 5 TO 15 MPH. SKIES WILL BECOME MOSTLY CLOUDY EARLY THIS EVENING ACROSS SOUTH CENTRAL LOWER MICHIGAN. THE FAST MOVING THUNDERSTORMS ALONG THE LAKESHORE WILL MOVE THROUGH THE AREA BETWEEN 730 AND 830 PM. TEMPERATURES WILL REMAIN IN THE UPPER 80S EARLY...AND THEN FALL INTO THE MID 70S AFTER THE STORMS MOVE THROUGH. WINDS WILL BE VARIABLE AT 5 TO 15 MPH AND THEN BECOME WEST. SOME OF THESE THUNDERSTORMS MAY BE SEVERE WITH STRONG WINDS... LARGE HAIL... AND HEAVY RAIN. TORNADOES ARE ALSO POSSIBLE WITH THESE STORMS IN SOUTH CENTRAL LOWER MICHIGAN. STAY TUNED TO NATIONAL WEATHER SERVICE WEATHER RADIO FOR TH]E LATEST STATEMENTS AND UPDATES ON THIS DANGEROUS WEATHER SITUATION. SHEETS
Special weather statement, Jul 7, 7:01 PM EDT, 8 minutes before
MIZ011-012-018-020-022-023-025-040-041-080100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LANSING MI 800 PM EDT SUN JUL 7 1991 ...TORNADO WATCH IN EFFECT FOR SOUTH CENTRAL LOWER MICHIGAN UNTIL 1100 PM EDT... ...STRONG THUNDERSTORMS APPROACHING SOUTH CENTRAL LOWER MICHIGAN... AT 700 PM EDT WEATHER RADAR INDICATED STRONG THUNDERSTORMS WERE BEGINNING TO APPROACH SOUTH CENTRAL LOWER MICHIGAN. A LINE OF STORMS EXTENDED FROM NEAR GRAND RAPIDS SOUTHWEST TO GRAND HAVEN...WITH ANOTHER AREA IN BERRY COUNTY. THESE STORMS ARE MOVING TO THE EAST BETWEEN 45 AND 50 MPH WITH THE LEADING STORM ENTERING EATON COUNTY BY 720 PM EDT. PERSONS IN THE PATH OF THESE STORMS SHOULD BE ON THE LOOKOUT FOR STRONG GUSTY WINDS...POSSIBLE TORNADOES...FREQUENT DEADLY LIGHTNING AND HEAVY RAINS. . STAY TUNED TO NATIONAL WEATHER SERVICE RADIO FOR THE LATEST STATEMENTS AND UPDATES ON THE POTENTIALLY DANGEROUS WEATHER SITUATION. P.LEWIS
Special weather statement, Jul 7, 7:05 PM EDT, 4 minutes before
MIZ011-012-018-020-022-023-025-040-041-080100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE LANSING MI 700 PM EDT SUN JUL 7 1991 ...TORNADO WATCH IN EFFECT FOR SOUTH CENTRAL LOWER MICHIGAN UNTIL 1100 PM EDT... ...STRONG THUNDERSTORMS APPROACHING SOUTH CENTRAL LOWER MICHIGAN... AT 700 PM EDT WEATHER RADAR INDICATED STRONG THUNDERSTORMS WERE BEGINNING TO APPROACH SOUTH CENTRAL LOWER MICHIGAN. A LINE OF STORMS EXTENDED FROM NEAR GRAND RAPIDS SOUTHWEST TO GRAND HAVEN...WITH ANOTHER AREA IN BERRY COUNTY. THESE STORMS ARE MOVING TO THE EAST BETWEEN 45 AND 50 MPH WITH THE LEADING STORM ENTERING EATON COUNTY BY 720 PM EDT. PERSONS IN THE PATH OF THESE STORMS SHOULD BE ON THE LOOKOUT FOR STRONG GUSTY WINDS...POSSIBLE TORNADOES...FREQUENT DEADLY LIGHTNING AND HEAVY RAINS. . STAY TUNED TO NATIONAL WEATHER SERVICE RADIO FOR THE LATEST STATEMENTS AND UPDATES ON THE POTENTIALLY DANGEROUS WEATHER SITUATION. P.LEWIS ...CORRECTION TO TIME IN HEADER...
The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 9:46 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 44 min |
| Jul 6, 9:58 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 47 min |
| Jul 6, 10:09 PM EDT | Severe Thunderstorm Warning | GRR | Ionia | 51 min |
| Jul 6, 10:23 PM EDT | Severe Thunderstorm Warning | GRR | Allegan | 52 min |
| Jul 6, 10:29 PM EDT | Severe Thunderstorm Warning | GRR | Kent | 46 min |
| Jul 6, 10:32 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 58 min |
| Jul 6, 11:36 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 39 min |
| Jul 7, 6:24 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Ottawa | 36 min |
| Jul 7, 6:42 PM EDT | Severe Thunderstorm Warning | GRR | Kent | 33 min |
| Jul 7, 6:57 PM EDT | Severe Thunderstorm Warning | GRR | Ionia, Montcalm | 48 min |
| Jul 7, 7:02 PM EDT | Tornado Warning | GRR | Ottawa | 28 min |
| Jul 7, 7:16 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Kent | 29 min |
| Jul 7, 7:22 PM EDT | Severe Thunderstorm Warning | GRR | Eaton | 68 min |
| Jul 7, 7:29 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 61 min |
| Jul 7, 7:30 PM EDT | Severe Thunderstorm Warning | GRR | Kalamazoo | 30 min |
| Jul 7, 7:47 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ingham | 43 min |
Nearby
Tornado Warnings in Michigan, 1991Every tornado warning in 1991Tornadoes in 1991
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.