Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 83, NWS Grand Rapids, MI

September 7, 2021Clare County, Michigan

NWS Grand Rapids, MI issued this severe thunderstorm warning at Sep 7, 2021, 2:03 PM EDT for Clare County, Michigan. It was in force for 46 min. 2 reports 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: Sep 7, 2021, 2:03 PM EDT (18:03 UTC)
Expired: Sep 7, 2021, 2:49 PM EDT
In force: 46 min
Issued by: NWS Grand Rapids, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Clare County, MI

The radar

The NCL Michigan radar (KAPX), 99 km from the middle of the area, began a volume at 18:05 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
Sep 7, 2:11 PM EDT	TSTM WND DMG	1 E Lake George, MI	TREES AND WIRES DOWN AT LAKE GEORGE AVENUE AND ARTHUR AVE. MULTIPLE TREES AND WIRES DOWN AROUND LAKE GEORGE.
Sep 7, 2:14 PM EDT	TSTM WND DMG	3 Ne Harrison, MI	AREAS OF TREES AND WIRES DOWN ACROSS HAYES TOWNSHIP.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 7, 12:21 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.1 hours before the alert went out and 182 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1621 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 150 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

095 
WUUS53 KGRR 071803
SVRGRR
MIC035-071900-
/O.NEW.KGRR.SV.W.0083.210907T1803Z-210907T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Grand Rapids MI
203 PM EDT Tue Sep 7 2021

The National Weather Service in Grand Rapids has issued a

* Severe Thunderstorm Warning for...
  Clare County in central Michigan...

* Until 300 PM EDT.

* At 202 PM EDT, a severe thunderstorm was located 8 miles east of 
  Evart, moving east at 65 mph. This storm has a history of 
  producing large hail in Lake and Osceola Counties.

  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...
  Clare...               Farwell...             Harrison...
  Lake...                Lake George...         Temple...
  Long Lake...           Leota...               

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4416 8461 4381 8461 4381 8509 4417 8508
TIME...MOT...LOC 1802Z 268DEG 56KT 4389 8511 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

HOVING

1 follow-up statement

372 
WWUS53 KGRR 071849
SVSGRR

Severe Weather Statement
National Weather Service Grand Rapids MI
249 PM EDT Tue Sep 7 2021

MIC035-071859-
/O.CAN.KGRR.SV.W.0083.000000T0000Z-210907T1900Z/
Clare MI-
249 PM EDT Tue Sep 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR CLARE COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 700 PM EDT for
central Michigan.

LAT...LON 4416 8461 4381 8461 4381 8509 4417 8508
TIME...MOT...LOC 1848Z 268DEG 56KT 4391 8408 

$$

NJJ

The office that day

Everything else NWS Grand Rapids, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 7, 11:50 AM EDT	Special Marine Warning	GRR		91 min
Sep 7, 12:25 PM EDT	Severe Thunderstorm Warning	GRR	Mason	65 min
Sep 7, 12:32 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Osceola	58 min
Sep 7, 12:40 PM EDT	Special Marine Warning	GRR		87 min
Sep 7, 12:54 PM EDT	Severe Thunderstorm Warning	GRR	Oceana	66 min
Sep 7, 1:08 PM EDT	Tornado Warning	GRR	Clare, Osceola	40 min
Sep 7, 1:13 PM EDT	Severe Thunderstorm Warning	GRR	Lake, Newaygo	37 min
Sep 7, 1:30 PM EDT	Special Marine Warning	GRR		60 min
Sep 7, 1:39 PM EDT	Severe Thunderstorm Warning Destructive damage threat	GRR	Osceola	38 min
Sep 7, 1:51 PM EDT	Severe Thunderstorm Warning	GRR	Muskegon, Oceana	54 min
Sep 7, 2:01 PM EDT	Lakeshore Flood Advisory	GRR	Muskegon	4 hr
Sep 7, 2:13 PM EDT	Tornado Warning	GRR	Clare	30 min
Sep 7, 2:20 PM EDT	Severe Thunderstorm Warning	GRR	Isabella, Mecosta, Newaygo	55 min
Sep 7, 2:23 PM EDT	Tornado Warning	GRR	Isabella	21 min
Sep 7, 2:40 PM EDT	Severe Thunderstorm Warning	GRR	Kent, Ottawa	39 min
Sep 7, 3:04 PM EDT	Severe Thunderstorm Warning	GRR	Montcalm	56 min
Sep 7, 3:26 PM EDT	Severe Thunderstorm Warning	GRR	Clinton, Gratiot, Ionia	64 min
Sep 7, 3:37 PM EDT	Special Marine Warning	GRR		83 min
Sep 7, 4:05 PM EDT	Severe Thunderstorm Warning	GRR	Van Buren	55 min
Sep 7, 4:49 PM EDT	Severe Thunderstorm Warning	GRR	Allegan, Barry, Kalamazoo	42 min
Sep 7, 5:13 PM EDT	Severe Thunderstorm Warning	GRR	Barry, Calhoun, Eaton	47 min
Sep 7, 5:40 PM EDT	Severe Thunderstorm Warning	GRR	Ingham, Jackson	50 min
Sep 7, 6:01 PM EDT	Severe Thunderstorm Warning	GRR	Clinton	29 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2021 Every 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.