Alert archive / Michigan / Tornado Warnings in 2021
Tornado Warning 11, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this tornado warning at Jul 7, 2021, 1:18 PM EDT for Clinton County, Gratiot County, Michigan. It was in force for 27 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
- Jul 7, 2021, 1:18 PM EDT (17:18 UTC)
- Expired
- Jul 7, 2021, 1:45 PM EDT
- In force
- 27 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.75 in
Counties Clinton County, MI, Gratiot County, MI
The radar
The Grand Rapids radar (KGRR), 87 km from the middle of the area, began a volume at 17:21 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 nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 5.3 hours before the alert went out and 95 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
- 1092 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
The text
As transmitted.
165
WFUS53 KGRR 071718
TORGRR
MIC037-057-071745-
/O.NEW.KGRR.TO.W.0011.210707T1718Z-210707T1745Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Grand Rapids MI
118 PM EDT Wed Jul 7 2021
The National Weather Service in Grand Rapids has issued a
* Tornado Warning for...
Southeastern Gratiot County in central Michigan...
Northeastern Clinton County in south central Michigan...
* Until 145 PM EDT.
* At 118 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Elsie, or 6 miles northeast of St. Johns, moving
east at 20 mph.
HAZARD...Tornado and golf ball 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...
Elsie around 130 PM EDT.
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 4299 8458 4317 8458 4319 8437 4296 8437
TIME...MOT...LOC 1718Z 271DEG 16KT 4308 8449
TORNADO...RADAR INDICATED
HAIL...1.75IN
$$
NJJ1 follow-up statement
750
WWUS53 KGRR 071738
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
138 PM EDT Wed Jul 7 2021
MIC057-071746-
/O.CAN.KGRR.TO.W.0011.000000T0000Z-210707T1745Z/
Gratiot MI-
138 PM EDT Wed Jul 7 2021
...THE TORNADO WARNING FOR SOUTHEASTERN GRATIOT COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
south central Michigan.
LAT...LON 4299 8458 4312 8458 4312 8437 4296 8437
TIME...MOT...LOC 1736Z 265DEG 16KT 4302 8450
$$
MIC037-071745-
/O.CON.KGRR.TO.W.0011.000000T0000Z-210707T1745Z/
Clinton MI-
138 PM EDT Wed Jul 7 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 PM EDT FOR
NORTHEASTERN CLINTON COUNTY...
At 136 PM EDT, the cell that prompted the warning has weakened and
is moving east out of the county.
Another severe thunderstorm capable of producing a tornado was
located near St. Johns, moving east at 20 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...
Elsie.
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 4299 8458 4312 8458 4312 8437 4296 8437
TIME...MOT...LOC 1736Z 265DEG 16KT 4302 8450
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
NJJThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 8:28 PM EDT | Areal Flood Warning | GRR | Mecosta, Newaygo | 6 hr |
| Jul 6, 9:21 PM EDT | Special Weather Statement | GRR | Clare, Isabella, Mecosta, Montcalm, Osceola | 54 min |
| Jul 7, 12:13 PM EDT | Special Weather Statement | GRR | Allegan, Barry, Calhoun, Clinton, Eaton, Gratiot and 11 more | 4 hr |
| Jul 7, 12:54 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot | 66 min |
| Jul 7, 1:45 PM EDT | Severe Thunderstorm Warning | GRR | Clinton | 13 min |
| Jul 7, 2:37 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Jackson | 38 min |
| Jul 7, 2:59 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun, Eaton, Ingham, Jackson | 77 min |
| Jul 7, 4:01 PM EDT | Special Weather Statement | GRR | Clare, Lake, Osceola | 119 min |
| Jul 7, 4:15 PM EDT | Areal Flood Advisory | GRR | Calhoun | 2 hr |
| Jul 7, 5:06 PM EDT | Severe Thunderstorm Warning | GRR | Calhoun | 24 min |
| Jul 7, 5:12 PM EDT | Special Weather Statement | GRR | Calhoun, Eaton, Ingham, Jackson | 2 hr |
| Jul 7, 5:18 PM EDT | Severe Thunderstorm Warning | GRR | Ingham | 27 min |
| Jul 7, 5:33 PM EDT | Areal Flood Advisory | GRR | Lake, Osceola | 4 hr |
| Jul 7, 6:03 PM EDT | Special Weather Statement | GRR | Clare, Lake, Osceola | 117 min |
| Jul 7, 6:17 PM EDT | Special Weather Statement | GRR | Clinton | 58 min |
| Jul 7, 6:44 PM EDT | Special Weather Statement | GRR | Barry | 31 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.