Alert archive / Michigan / Tornado Warnings in 2021
Tornado Warning 12, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this tornado warning at Sep 7, 2021, 1:08 PM EDT for Clare County, Osceola County, Michigan. It was in force for 40 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 7, 2021, 1:08 PM EDT (17:08 UTC)
- Expired
- Sep 7, 2021, 1:48 PM EDT
- In force
- 40 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.0 in
Counties Clare County, MI, Osceola County, MI
The radar
The NCL Michigan radar (KAPX), 94 km from the middle of the area, began a volume at 17:09 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
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, 12:21 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 5.1 hours before the alert went out and 202 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.
961
WFUS53 KGRR 071708
TORGRR
MIC035-133-071815-
/O.NEW.KGRR.TO.W.0012.210907T1708Z-210907T1815Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Rapids MI
108 PM EDT Tue Sep 7 2021
The National Weather Service in Grand Rapids has issued a
* Tornado Warning for...
Clare County in central Michigan...
Northern Osceola County in central Michigan...
* Until 215 PM EDT.
* At 108 PM EDT, a severe thunderstorm capable of producing a tornado
was located 8 miles west of Marion, or 12 miles north of Evart,
moving east at 50 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Marion around 120 PM EDT.
Other locations in the path of this tornadic thunderstorm include
Harrison.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4416 8506 4416 8461 4390 8461 4395 8547
4416 8548 4417 8519
TIME...MOT...LOC 1708Z 270DEG 42KT 4408 8531
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
HOVING2 follow-up statements
399
WWUS53 KGRR 071737
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
137 PM EDT Tue Sep 7 2021
MIC133-071746-
/O.CAN.KGRR.TO.W.0012.000000T0000Z-210907T1815Z/
Osceola MI-
137 PM EDT Tue Sep 7 2021
...THE TORNADO WARNING FOR NORTHERN OSCEOLA COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
central Michigan.
LAT...LON 4416 8461 4390 8461 4393 8509 4416 8509
TIME...MOT...LOC 1736Z 269DEG 34KT 4407 8498
$$
MIC035-071815-
/O.CON.KGRR.TO.W.0012.000000T0000Z-210907T1815Z/
Clare MI-
137 PM EDT Tue Sep 7 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM EDT FOR CLARE
COUNTY...
At 136 PM EDT, a severe thunderstorm capable of producing a tornado
was located 8 miles southeast of Vogel Center, or 18 miles northeast
of Evart, moving east at 40 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Harrison.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4416 8461 4390 8461 4393 8509 4416 8509
TIME...MOT...LOC 1736Z 269DEG 34KT 4407 8498
TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
$$
NJJ238
WWUS53 KGRR 071748
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
148 PM EDT Tue Sep 7 2021
MIC035-071758-
/O.CAN.KGRR.TO.W.0012.000000T0000Z-210907T1815Z/
Clare MI-
148 PM EDT Tue Sep 7 2021
...THE TORNADO WARNING FOR CLARE COUNTY IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
central Michigan.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Grand Rapids.
LAT...LON 4416 8461 4390 8461 4393 8509 4416 8509
TIME...MOT...LOC 1746Z 270DEG 42KT 4407 8478
$$
NJJThe 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, 1:13 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, 4:49 PM EDT | Severe Thunderstorm Warning | GRR | Allegan, Barry, Kalamazoo | 42 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
Tornado Warnings in Michigan, 2021Every tornado warning in 2021Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.