Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 89, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 7, 2021, 4:49 PM EDT for Allegan County, Barry County, Kalamazoo County, Michigan. It was in force for 42 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 7, 2021, 4:49 PM EDT (20:49 UTC)
- Expired
- Sep 7, 2021, 5:31 PM EDT
- In force
- 42 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Allegan County, MI, Barry County, MI, Kalamazoo County, MI
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 7, 5:05 PM EDT | TSTM WND DMG | 1 W Eastwood, MI | STRUCTURE COLLAPSE DUE TO FALLEN TREE. ONE PERSON TRAPPED IN HOUSE; NO INJURIES. TIME ESTIMATED FROM RADAR. |
| Sep 7, 5:06 PM EDT | TSTM WND DMG | 3 S Oshtemo, MI | NUMEROUS TREES AND POWER LINES DOWN IN TEXAS TWP, ONE RESULTING IN A HOUSE FIRE. TIME ESTIMATED FROM RADAR. |
| Sep 7, 5:06 PM EDT | TSTM WND GST 69 | 3 Ne Portage, MI | ASOS STATION KAZO KZOO/BATTLE CREEK INTL AIRPORT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 7, 3:20 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 8.8 hours before the alert went out and 178 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1621 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
286
WUUS53 KGRR 072049
SVRGRR
MIC005-015-077-072145-
/O.NEW.KGRR.SV.W.0089.210907T2049Z-210907T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
449 PM EDT Tue Sep 7 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Southeastern Allegan County in southwestern Michigan...
Southwestern Barry County in southwestern Michigan...
Kalamazoo County in southwestern Michigan...
* Until 545 PM EDT.
* At 448 PM EDT, a severe thunderstorm was located 6 miles west of
Westwood, or 9 miles northwest of Kalamazoo, moving east at 55 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Kalamazoo... Portage... Otsego...
Plainwell... Vicksburg... Galesburg...
Schoolcraft... Climax... Richland...
Martin... Westwood... Comstock Northwest...
Gull Lake... Alamo... Orangeville...
Fulton... Augusta... Delton...
Oshtemo... Hickory Corners...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4242 8576 4242 8581 4260 8580 4260 8526
4242 8527 4242 8530 4207 8530 4207 8576
TIME...MOT...LOC 2048Z 267DEG 49KT 4234 8575
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
HOVING2 follow-up statements
530
WWUS53 KGRR 072112
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
512 PM EDT Tue Sep 7 2021
MIC005-072121-
/O.CAN.KGRR.SV.W.0089.000000T0000Z-210907T2145Z/
Allegan MI-
512 PM EDT Tue Sep 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ALLEGAN COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
south central and southwestern Michigan.
LAT...LON 4242 8563 4242 8554 4260 8554 4260 8526
4242 8527 4242 8530 4207 8530 4207 8573
TIME...MOT...LOC 2111Z 267DEG 49KT 4236 8532
$$
MIC015-077-072145-
/O.CON.KGRR.SV.W.0089.000000T0000Z-210907T2145Z/
Barry MI-Kalamazoo MI-
512 PM EDT Tue Sep 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR SOUTHWESTERN BARRY AND KALAMAZOO COUNTIES...
At 511 PM EDT, a severe thunderstorm was located near Level Park-Oak
Park, or near Battle Creek, moving east at 55 mph. The Kalamazoo
Battle Creek International Airport gusted to 69 mph with this storm.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Trained weather spotters.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Kalamazoo... Portage... Vicksburg...
Galesburg... Schoolcraft... Climax...
Richland... Comstock Northwest... Westwood...
Gull Lake... Orangeville... Fulton...
Augusta... Delton... Banfield...
Prairieville... Hickory Corners... Pine Lake...
Comstock... Cloverdale...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4242 8563 4242 8554 4260 8554 4260 8526
4242 8527 4242 8530 4207 8530 4207 8573
TIME...MOT...LOC 2111Z 267DEG 49KT 4236 8532
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH
$$
HOVING916
WWUS53 KGRR 072131
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
531 PM EDT Tue Sep 7 2021
MIC015-077-072140-
/O.CAN.KGRR.SV.W.0089.000000T0000Z-210907T2145Z/
Barry MI-Kalamazoo MI-
531 PM EDT Tue Sep 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN BARRY AND
KALAMAZOO COUNTIES IS CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
south central and southwestern Michigan.
LAT...LON 4242 8563 4242 8554 4260 8554 4260 8526
4242 8527 4242 8530 4207 8530 4207 8573
TIME...MOT...LOC 2128Z 267DEG 49KT 4237 8496
$$
HOVINGThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 11:50 AM EDT | Special Marine Warning | GRR | 91 min | |
| Sep 7, 12:25 PM EDT | Severe Thunderstorm Warning | GRR | Mason | 65 min |
| Sep 7, 12:32 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Osceola | 58 min |
| Sep 7, 12:40 PM EDT | Special Marine Warning | GRR | 87 min | |
| Sep 7, 12:54 PM EDT | Severe Thunderstorm Warning | GRR | Oceana | 66 min |
| Sep 7, 1:08 PM EDT | Tornado Warning | GRR | Clare, Osceola | 40 min |
| Sep 7, 1:13 PM EDT | Severe Thunderstorm Warning | GRR | Lake, Newaygo | 37 min |
| Sep 7, 1:30 PM EDT | Special Marine Warning | GRR | 60 min | |
| Sep 7, 1:39 PM EDT | Severe Thunderstorm Warning | GRR | Osceola | 38 min |
| Sep 7, 1:51 PM EDT | Severe Thunderstorm Warning | GRR | Muskegon, Oceana | 54 min |
| Sep 7, 2:01 PM EDT | Lakeshore Flood Advisory | GRR | Muskegon | 4 hr |
| Sep 7, 2:03 PM EDT | Severe Thunderstorm Warning | GRR | Clare | 46 min |
| Sep 7, 2:13 PM EDT | Tornado Warning | GRR | Clare | 30 min |
| Sep 7, 2:20 PM EDT | Severe Thunderstorm Warning | GRR | Isabella, Mecosta, Newaygo | 55 min |
| Sep 7, 2:23 PM EDT | Tornado Warning | GRR | Isabella | 21 min |
| Sep 7, 2:40 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 39 min |
| Sep 7, 3:04 PM EDT | Severe Thunderstorm Warning | GRR | Montcalm | 56 min |
| Sep 7, 3:26 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ionia | 64 min |
| Sep 7, 3:37 PM EDT | Special Marine Warning | GRR | 83 min | |
| Sep 7, 4:05 PM EDT | Severe Thunderstorm Warning | GRR | Van Buren | 55 min |
| Sep 7, 5:13 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Calhoun, Eaton | 47 min |
| Sep 7, 5:40 PM EDT | Severe Thunderstorm Warning | GRR | Ingham, Jackson | 50 min |
| Sep 7, 6:01 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 29 min |
Nearby
Severe Thunderstorm Warnings in Michigan, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.