Alert archive / Michigan / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 59, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Aug 24, 2021, 4:53 PM EDT for Newaygo County, Michigan. It was in force for 40 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 24, 2021, 4:53 PM EDT (20:53 UTC)
- Expired
- Aug 24, 2021, 5:33 PM EDT
- In force
- 40 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), 58 km from the middle of the area, began a volume at 20:54 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 24, 4:55 PM EDT | TSTM WND GST 45 | 1 Sse Reeman, MI | AWOS STATION KFFX FREMONT MUNICIPAL ARPT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Detroit, MI (KDTX), launched 12:00Z, 8.9 hours before the alert went out and 205 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
- 298 J/kg
- Mixed-layer CIN
- -182 J/kg
- Mixed-layer LCL
- 1140 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -57 m²/s²
- 0-3 km storm-relative helicity
- -89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
724
WUUS53 KGRR 242053
SVRGRR
MIC123-242145-
/O.NEW.KGRR.SV.W.0059.210824T2053Z-210824T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
453 PM EDT Tue Aug 24 2021
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Southern Newaygo County in west central Michigan...
* Until 545 PM EDT.
* At 453 PM EDT, a severe thunderstorm was located near Newaygo,
moving southeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Newaygo... Fremont... Grant...
Croton... Bridgeton... Reeman...
Croton Heights...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4348 8557 4330 8556 4329 8591 4330 8603
4346 8603
TIME...MOT...LOC 2053Z 301DEG 30KT 4342 8584
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
041 follow-up statement
309
WWUS53 KGRR 242133
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
533 PM EDT Tue Aug 24 2021
MIC123-242143-
/O.CAN.KGRR.SV.W.0059.000000T0000Z-210824T2145Z/
Newaygo MI-
533 PM EDT Tue Aug 24 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN NEWAYGO COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled.
LAT...LON 4348 8557 4330 8556 4329 8591 4330 8603
4346 8603
TIME...MOT...LOC 2130Z 301DEG 30KT 4325 8545
$$
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, 4:43 PM EDT | Severe Thunderstorm Warning | GRR | Newaygo | 49 min |
| Aug 24, 4:45 PM EDT | Severe Thunderstorm Warning | GRR | Lake | 45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.