Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 97, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 13, 2021, 1:18 PM EDT for Ingham County, Michigan. It was in force for 16 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 13, 2021, 1:18 PM EDT (17:18 UTC)
- Expired
- Sep 13, 2021, 1:34 PM EDT
- In force
- 16 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Ingham County, MI
The radar
The Detroit radar (KDTX), 69 km from the middle of the area, began a volume at 17:17 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 72 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
- 947 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 12 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
946
WUUS53 KGRR 131718
SVRGRR
MIC065-131745-
/O.NEW.KGRR.SV.W.0097.210913T1718Z-210913T1745Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
118 PM EDT Mon Sep 13 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Northeastern Ingham County in south central Michigan...
* Until 145 PM EDT.
* At 117 PM EDT, a severe thunderstorm was located near Williamston,
or 7 miles west of Fowlerville, moving east at 35 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...
Williamston... Webberville... Dansville...
Bell Oak... Okemos... Haslett...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Large hail and damaging winds and continuous cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4257 8442 4277 8437 4278 8436 4278 8416
4252 8414
TIME...MOT...LOC 1717Z 284DEG 32KT 4268 8422
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
DUKE1 follow-up statement
631
WWUS53 KGRR 131734
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
134 PM EDT Mon Sep 13 2021
MIC065-131743-
/O.CAN.KGRR.SV.W.0097.000000T0000Z-210913T1745Z/
Ingham MI-
134 PM EDT Mon Sep 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN INGHAM COUNTY IS
CANCELLED...
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Grand Rapids.
LAT...LON 4257 8442 4277 8437 4278 8436 4278 8416
4252 8414
TIME...MOT...LOC 1733Z 284DEG 32KT 4264 8402
$$
DUKEThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 13, 3:05 AM EDT | Small Craft Advisory | GRR | 56 hr | |
| Sep 13, 3:08 AM EDT | Beach Hazards Statement | GRR | Allegan, Mason, Muskegon, Oceana, Ottawa, Van Buren | 50 hr |
| Sep 13, 4:52 AM EDT | Special Marine Warning | GRR | 113 min | |
| Sep 13, 10:33 AM EDT | Special Marine Warning | GRR | 87 min | |
| Sep 13, 10:56 AM EDT | Special Weather Statement | GRR | Kent, Muskegon, Newaygo, Ottawa | 64 min |
| Sep 13, 11:37 AM EDT | Severe Thunderstorm Warning | GRR | Kent, Ottawa | 53 min |
| Sep 13, 12:36 PM EDT | Special Weather Statement | GRR | Clinton, Eaton, Gratiot, Ingham, Ionia | 84 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.