Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 45, NWS Marquette, MI

August 10, 20214 counties in Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Aug 10, 2021, 3:07 PM EDT for 4 counties in Michigan. It was in force for 53 min. 3 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: Aug 10, 2021, 3:07 PM EDT (19:07 UTC)
Expired: Aug 10, 2021, 4:00 PM EDT
In force: 53 min
Issued by: NWS Marquette, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Baraga County, MI, Dickinson County, MI, Iron County, MI, Marquette County, MI

The radar

The Marquette radar (KMQT), 77 km from the middle of the area, began a volume at 19:07 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 10, 3:41 PM EDT	HAIL 0.25	2 Wsw Witch Lake, MI	FACEBOOK REPORT WITH PICTURE OF PEA SIZED HAIL FALLING ALONG FENCE RIVER ROAD NEAR REPUBLIC, MI.
Aug 10, 3:43 PM EDT	TSTM WND DMG	2 Wnw Witch Lake, MI	UPPCO OUTAGE MAP SHOWED HUNDREDS OF CUSTOMERS WITHOUT POWER IN THE AREA BETWEEN WITCH LAKE AND THE IRON COUNTY LINE. DELAYED REPORT. TIME ESTIMATED BY RADAR.
Aug 10, 3:48 PM EDT	HAIL 1.5	Witch Lake, MI	PHOTO AND VIDEO RECEIVED VIA SOCIAL MEDIA. DELAYED REPORT. TIME ESTIMATED BY RADAR.

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 12:00Z, 7.1 hours before the alert went out and 215 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: 32 J/kg
Mixed-layer CIN: -550 J/kg
Mixed-layer LCL: 828 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

573 
WUUS53 KMQT 101907
SVRMQT
MIC013-043-071-103-102000-
/O.NEW.KMQT.SV.W.0045.210810T1907Z-210810T2000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Marquette MI
307 PM EDT Tue Aug 10 2021

The National Weather Service in Marquette has issued a

* Severe Thunderstorm Warning for...
  Northeastern Iron County in south central Upper Michigan...
  Northwestern Dickinson County in south central Upper Michigan...
  West central Marquette County in north central Upper Michigan...
  Southern Baraga County in north central Upper Michigan...

* Until 400 PM EDT/300 PM CDT/.

* At 307 PM EDT/207 PM CDT/, a severe thunderstorm was located near
  Amasa, or 14 miles north of Crystal Falls, moving east at 35 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Squaw Lake and Witch Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4642 8881 4642 8868 4648 8868 4671 8816
      4616 8793 4610 8866
TIME...MOT...LOC 1907Z 259DEG 29KT 4630 8837 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BW

3 follow-up statements

077 
WWUS53 KMQT 101925
SVSMQT

Severe Weather Statement
National Weather Service Marquette MI
325 PM EDT Tue Aug 10 2021

MIC013-043-071-103-102000-
/O.CON.KMQT.SV.W.0045.000000T0000Z-210810T2000Z/
Iron MI-Dickinson MI-Marquette MI-Baraga MI-
325 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM
EDT/300 PM CDT/ FOR NORTHEASTERN IRON...NORTHWESTERN DICKINSON...WEST
CENTRAL MARQUETTE AND SOUTHERN BARAGA COUNTIES...

At 325 PM EDT/225 PM CDT/, a severe thunderstorm was located near
Squaw Lake, or 17 miles northeast of Crystal Falls, moving east at 35
mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Covington, Michigamme, Squaw Lake, Amasa, U.S. 141 between Covington
and Amasa, Witch Lake, Three Lakes, Lake Michigamme, Way Dam, King
Lake, Silver Lake near Channing and Craig Lake State Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4671 8816 4616 8793 4612 8842 4653 8858
TIME...MOT...LOC 1925Z 259DEG 29KT 4633 8816 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BW

198 
WWUS53 KMQT 101936
SVSMQT

Severe Weather Statement
National Weather Service Marquette MI
336 PM EDT Tue Aug 10 2021

MIC013-043-071-103-102000-
/O.CON.KMQT.SV.W.0045.000000T0000Z-210810T2000Z/
Iron MI-Dickinson MI-Marquette MI-Baraga MI-
336 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM
EDT/300 PM CDT/ FOR NORTHEASTERN IRON...NORTHWESTERN DICKINSON...WEST
CENTRAL MARQUETTE AND SOUTH CENTRAL BARAGA COUNTIES...

At 336 PM EDT/236 PM CDT/, a severe thunderstorm was located near
Squaw Lake, or 19 miles southwest of Ishpeming, moving east at 35
mph.

HAZARD...60 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Squaw Lake, Witch Lake, Lake Michigamme, Way Dam, Silver Lake near
Channing and Bone Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4616 8793 4613 8831 4639 8840 4652 8808
TIME...MOT...LOC 1936Z 259DEG 29KT 4635 8803 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

BW

074 
WWUS53 KMQT 101952
SVSMQT

Severe Weather Statement
National Weather Service Marquette MI
352 PM EDT Tue Aug 10 2021

MIC013-043-071-103-102002-
/O.EXP.KMQT.SV.W.0045.000000T0000Z-210810T2000Z/
Iron MI-Dickinson MI-Marquette MI-Baraga MI-
352 PM EDT Tue Aug 10 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN IRON...
NORTHWESTERN DICKINSON...WEST CENTRAL MARQUETTE AND SOUTH CENTRAL
BARAGA COUNTIES WILL EXPIRE AT 400 PM EDT/300 PM CDT/...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.  However small
hail, gusty winds and heavy rain are still possible with this
thunderstorm.

LAT...LON 4616 8793 4613 8831 4639 8840 4652 8808
TIME...MOT...LOC 1952Z 259DEG 29KT 4637 8786 

$$

BW

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 2:36 AM EDT	Dense Fog Advisory	MQT	Alger, Baraga, Delta, Dickinson, Gogebic, Houghton and 7 more	6 hr
Aug 10, 1:29 PM EDT	Special Marine Warning	MQT		91 min
Aug 10, 1:44 PM EDT	Special Weather Statement	MQT	Ontonagon	46 min
Aug 10, 1:50 PM EDT	Special Weather Statement	MQT	Ontonagon	25 min
Aug 10, 1:53 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic, Ontonagon	52 min
Aug 10, 2:00 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic, Houghton, Iron, Ontonagon	45 min
Aug 10, 2:08 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic, Houghton, Ontonagon	52 min
Aug 10, 2:22 PM EDT	Special Marine Warning	MQT		59 min
Aug 10, 2:23 PM EDT	Severe Thunderstorm Warning	MQT	Houghton, Ontonagon	52 min
Aug 10, 2:29 PM EDT	Severe Thunderstorm Warning	MQT	Baraga, Houghton, Iron	46 min
Aug 10, 3:46 PM EDT	Severe Thunderstorm Warning	MQT	Dickinson, Iron, Marquette	44 min
Aug 10, 3:51 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic, Ontonagon	39 min
Aug 10, 4:13 PM EDT	Severe Thunderstorm Warning	MQT	Dickinson, Marquette	47 min
Aug 10, 4:15 PM EDT	Severe Thunderstorm Warning	MQT	Baraga, Gogebic, Houghton, Iron, Ontonagon	45 min
Aug 10, 4:35 PM EDT	Severe Thunderstorm Warning	MQT	Alger, Delta, Dickinson, Marquette, Menominee	25 min
Aug 10, 4:53 PM EDT	Severe Thunderstorm Warning	MQT	Alger, Delta, Marquette	52 min
Aug 10, 5:02 PM EDT	Special Marine Warning	MQT		28 min
Aug 10, 5:50 PM EDT	Special Weather Statement	MQT	Alger	40 min
Aug 10, 5:54 PM EDT	Severe Thunderstorm Warning	MQT	Alger, Marquette	51 min
Aug 10, 6:16 PM EDT	Special Marine Warning	MQT		59 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.