Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 8, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jun 12, 2021, 8:16 PM EDT for Clinton County, Michigan. It was in force for 32 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
- Jun 12, 2021, 8:16 PM EDT (00:16 UTC)
- Expired
- Jun 12, 2021, 8:48 PM EDT
- In force
- 32 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Clinton County, MI
The radar
The Grand Rapids radar (KGRR), 77 km from the middle of the area, began a volume at 00:19 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 00:00Z, 0.3 hours before the alert went out and 98 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
- 1692 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 1112 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 90 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.1
The text
As transmitted.
120
WUUS53 KGRR 130016
SVRGRR
MIC037-130115-
/O.NEW.KGRR.SV.W.0008.210613T0016Z-210613T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
816 PM EDT Sat Jun 12 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Clinton County in south central Michigan...
* Until 915 PM EDT.
* At 816 PM EDT, a severe thunderstorm was located near Carson City,
or 14 miles northeast of Ionia, moving southeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
St. Johns... Elsie... DeWitt...
Eureka... Ovid... Fowler...
Westphalia... Maple Rapids... Hubbardston...
Bath...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4277 8458 4296 8484 4312 8484 4312 8437
4277 8437
TIME...MOT...LOC 0016Z 303DEG 22KT 4313 8486
HAIL...1.00IN
WIND...60MPH
$$
TJT2 follow-up statements
936
WWUS53 KGRR 130037
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
837 PM EDT Sat Jun 12 2021
MIC037-130115-
/O.CON.KGRR.SV.W.0008.000000T0000Z-210613T0115Z/
Clinton MI-
837 PM EDT Sat Jun 12 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR CLINTON COUNTY...
At 836 PM EDT, a severe thunderstorm was located 8 miles northeast
of Portland, moving southeast at 20 mph. Another storm northwest of
Fowler in far northwest Clinton County was also moving southeast.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
St. Johns... Elsie... DeWitt...
Eureka... Ovid... Fowler...
Westphalia... Maple Rapids... Hubbardston...
Bath...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4277 8458 4296 8484 4312 8484 4312 8437
4277 8437
TIME...MOT...LOC 0036Z 306DEG 18KT 4298 8480
HAIL...1.00IN
WIND...60MPH
$$
TJT813
WWUS53 KGRR 130048
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
848 PM EDT Sat Jun 12 2021
MIC037-130056-
/O.CAN.KGRR.SV.W.0008.000000T0000Z-210613T0115Z/
Clinton MI-
848 PM EDT Sat Jun 12 2021
...THE SEVERE THUNDERSTORM WARNING FOR CLINTON COUNTY IS CANCELLED...
The storms which prompted the warning had weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning has been cancelled. However, small hail,
lightning and heavy rain remain possible across much of Clinton
County through at least 900 PM.
LAT...LON 4277 8458 4296 8484 4312 8484 4312 8437
4277 8437
TIME...MOT...LOC 0045Z 303DEG 22KT 4294 8472
$$
TJTThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 10:01 PM EDT | Special Weather Statement | GRR | Clinton, Gratiot, Ingham, Jackson | 59 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.