Alert archive / Michigan / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 21, NWS Grand Rapids, MI
NWS Grand Rapids, MI issued this severe thunderstorm warning at Jul 11, 2022, 8:20 PM EDT for Mason County, Oceana County, Michigan. It was in force for 55 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
- Jul 11, 2022, 8:20 PM EDT (00:20 UTC)
- Expired
- Jul 11, 2022, 9:15 PM EDT
- In force
- 55 min
- Issued by
- NWS Grand Rapids, MI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Mason County, MI, Oceana County, MI
The radar
The Grand Rapids radar (KGRR), 127 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 11, 8:45 PM EDT | TSTM WND GST 36 | 3 Ne Pentwater, MI | MESONET STATION EW6978 PENTWATER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.3 hours before the alert went out and 155 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
- 5 J/kg
- Mixed-layer CIN
- -113 J/kg
- Mixed-layer LCL
- 1248 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- -45 m²/s²
- 0-3 km storm-relative helicity
- -8 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
384
WUUS53 KGRR 120020
SVRGRR
MIC105-127-120115-
/O.NEW.KGRR.SV.W.0021.220712T0020Z-220712T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
820 PM EDT Mon Jul 11 2022
The National Weather Service in Grand Rapids has issued a
* Severe Thunderstorm Warning for...
Mason County in west central Michigan...
Oceana County in west central Michigan...
* Until 915 PM EDT.
* At 820 PM EDT, a severe thunderstorm was located 12 miles northwest
of Silver Lake SP, or 17 miles southwest of Ludington, moving east
at 45 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.
* This severe thunderstorm will be near...
Silver Lake SP around 835 PM EDT.
Pentwater, Mears SP and Mears around 840 PM EDT.
Other locations in the path of this severe thunderstorm include Hart.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4417 8604 4347 8604 4347 8646 4358 8653
4366 8654 4380 8643 4396 8646 4406 8651
4412 8643 4418 8639
TIME...MOT...LOC 0020Z 277DEG 41KT 4378 8671
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
LAURENS2 follow-up statements
605
WWUS53 KGRR 120045
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
845 PM EDT Mon Jul 11 2022
MIC105-127-120115-
/O.CON.KGRR.SV.W.0021.000000T0000Z-220712T0115Z/
Mason MI-Oceana MI-
845 PM EDT Mon Jul 11 2022
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR MASON AND OCEANA COUNTIES...
At 845 PM EDT, severe thunderstorms were located along a line
extending from 5 miles east of Fountain to near Hart to 14 miles
southwest of Silver Lake SP, moving east at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Ludington... Hart... Ludington SP...
Shelby... Scottville... Hesperia...
Pentwater... Fountain... Free Soil...
Hamlin Lake... Mears SP... Silver Lake SP...
Weare... Elbridge... Colfax...
New Era... Rothbury... Custer...
Walkerville... Walhalla...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4417 8604 4347 8604 4347 8646 4358 8653
4366 8654 4380 8643 4396 8646 4406 8651
4412 8643 4418 8639
TIME...MOT...LOC 0045Z 277DEG 44KT 4405 8607 4371 8637 4349 8668
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
NJJ627
WWUS53 KGRR 120113
SVSGRR
Severe Weather Statement
National Weather Service Grand Rapids MI
913 PM EDT Mon Jul 11 2022
MIC105-127-120123-
/O.EXP.KGRR.SV.W.0021.000000T0000Z-220712T0115Z/
Mason MI-Oceana MI-
913 PM EDT Mon Jul 11 2022
...THE SEVERE THUNDERSTORM WARNING FOR MASON AND OCEANA COUNTIES WILL
EXPIRE AT 915 PM EDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire. However, small hail and gusty winds to 50
mph are still possible with these thunderstorms.
LAT...LON 4417 8604 4347 8604 4347 8646 4358 8653
4366 8654 4380 8643 4396 8646 4406 8651
4412 8643 4418 8639
TIME...MOT...LOC 0113Z 270DEG 41KT 4401 8569 4368 8599 4346 8630
$$
NJJThe office that day
Everything else NWS Grand Rapids, MI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 9:04 PM EDT | Special Weather Statement | GRR | Muskegon, Newaygo | 86 min |
| Jul 11, 9:35 PM EDT | Special Weather Statement | GRR | Clare, Isabella, Mecosta, Osceola | 115 min |
| Jul 11, 9:52 PM EDT | Special Weather Statement | GRR | Montcalm | 83 min |
| Jul 11, 10:14 PM EDT | Tornado Warning | GRR | Clinton, Ionia | 31 min |
| Jul 12, 3:24 AM EDT | Beach Hazards Statement | GRR | Allegan, Muskegon, Ottawa, Van Buren | 11 hr |
| Jul 12, 3:24 AM EDT | Small Craft Advisory | GRR | 11 hr |
Nearby
Severe Thunderstorm Warnings in Michigan, 2022Every severe thunderstorm warning in 2022
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.