Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 57, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 24, 2021, 4:43 PM EDT for Newaygo County, Michigan. It was in force for 49 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
- Aug 24, 2021, 4:43 PM EDT (20:43 UTC)
- Expired
- Aug 24, 2021, 5:32 PM EDT
- In force
- 49 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Newaygo County, MI
The radar
The Grand Rapids radar (KGRR), 92 km from the middle of the area, began a volume at 20:42 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 8.7 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
- 58 J/kg
- Mixed-layer CIN
- -344 J/kg
- Mixed-layer LCL
- 1387 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
314
WUUS53 KGRR 242043
SVRGRR
MIC123-242145-
/O.NEW.KGRR.SV.W.0057.210824T2043Z-210824T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
443 PM EDT Tue Aug 24 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Newaygo County in west central Michigan...
* Until 545 PM EDT.
* At 443 PM EDT, a severe thunderstorm was located near Hesperia, or
12 miles northwest of White Cloud, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
White Cloud... Fremont... Hesperia...
Brohman... Woodland Park... Hawkins...
Bitely... Woodville... Wooster...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4379 8604 4382 8562 4382 8558 4348 8556
4347 8604
TIME...MOT...LOC 2043Z 255DEG 24KT 4362 8600
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
041 follow-up statement
527
WWUS53 KGRR 242132
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
532 PM EDT Tue Aug 24 2021
MIC123-242142-
/O.CAN.KGRR.SV.W.0057.000000T0000Z-210824T2145Z/
Newaygo MI-
532 PM EDT Tue Aug 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR NEWAYGO COUNTY IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 4379 8604 4382 8562 4382 8558 4348 8556
4347 8604
TIME...MOT...LOC 2130Z 255DEG 24KT 4370 8556
$$
04The office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 2:06 PM EDT | Special Marine Warning | GRR | 114 min | |
| Aug 24, 3:48 PM EDT | Severe Thunderstorm Warning | GRR | Mason, Oceana | 42 min |
| Aug 24, 3:52 PM EDT | Special Marine Warning | GRR | 98 min | |
| Aug 24, 4:24 PM EDT | Special Marine Warning | GRR | 66 min | |
| Aug 24, 4:45 PM EDT | Severe Thunderstorm Warning | GRR | Lake | 45 min |
| Aug 24, 4:53 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 40 min |
| Aug 24, 5:10 PM EDT | Severe Thunderstorm Warning | GRR | Kent, Mecosta, Montcalm, Osceola | 50 min |
| Aug 24, 5:56 PM EDT | Severe Thunderstorm Warning | GRR | Clare, Isabella | 64 min |
| Aug 24, 6:06 PM EDT | Severe Thunderstorm Warning | GRR | Clinton, Gratiot, Ionia, Montcalm | 84 min |
| Aug 24, 6:13 PM EDT | Special Marine Warning | GRR | 92 min | |
| Aug 24, 6:48 PM EDT | Severe Thunderstorm Warning | GRR | Barry, Clinton, Eaton, Ingham, Ionia | 42 min |
| Aug 24, 7:38 PM EDT | Areal Flood Advisory | GRR | Calhoun, Jackson, Kalamazoo, Van Buren | 10 hr |
| Aug 24, 7:41 PM EDT | Special Marine Warning | GRR | 54 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.