Alert archive / Michigan / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 21, NWS Detroit, MI

June 10, 20205 counties in Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jun 10, 2020, 2:20 PM EDT for 5 counties in Michigan. It was in force for 70 min. 4 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: Jun 10, 2020, 2:20 PM EDT (18:20 UTC)
Expired: Jun 10, 2020, 3:30 PM EDT
In force: 70 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Bay County, MI, Genesee County, MI, Saginaw County, MI, Shiawassee County, MI, Tuscola County, MI

The radar

The Detroit radar (KDTX), 110 km from the middle of the area, began a volume at 18:22 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
Jun 10, 2:30 PM EDT	TSTM WND DMG	Bay City, MI	SEVERAL REPORTS OF TREE DAMAGE IN BAY CITY. ONE REPORT ALONG MIDLAND ROAD AND ANOTHER AT LINCOLN AND 13TH STREET.
Jun 10, 2:43 PM EDT	TSTM WND DMG	1 Wnw Swan Creek, MI	LIVE WIRES DOWN ALONG LAKEWOOD DRIVE.
Jun 10, 2:46 PM EDT	TSTM WND DMG	3 W Shields, MI	MULTIPLE REPORTS OF TREES AND WIRES DOWN BETWEEN THOMAS AND HEMLOCK ROADS.
Jun 10, 3:04 PM EDT	TSTM WND DMG	2 Wnw Shields, MI	DOZENS OF REPORTS OF TREES DOWN ACROSS SAGINAW COUNTY, PARTICULARLY AROUND THOMAS TWP.

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
Jun 10, 12:41 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 6.3 hours before the alert went out and 108 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: 1134 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 218 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.8
Supercell composite: 3.7

Open this sounding in Storm Lab

The text

As transmitted.

716 
WUUS53 KDTX 101820
SVRDTX
MIC017-049-145-155-157-101930-
/O.NEW.KDTX.SV.W.0021.200610T1820Z-200610T1930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
220 PM EDT Wed Jun 10 2020

The National Weather Service in Detroit/Pontiac has issued a

* Severe Thunderstorm Warning for...
  Northwestern Tuscola County in southeastern Michigan...
  Bay County in southeastern Michigan...
  Saginaw County in southeastern Michigan...
  Northern Shiawassee County in southeastern Michigan...
  Northwestern Genesee County in southeastern Michigan...

* Until 330 PM EDT.

* At 220 PM EDT, a severe thunderstorm was located near Oakley, or
  near Chesaning, moving north at 55 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* This severe thunderstorm will be near...
  Chesaning around 225 PM EDT.
  St. Charles around 235 PM EDT.
  Bridgeport around 245 PM EDT.
  Saginaw and Zilwaukee around 250 PM EDT.
  Munger around 255 PM EDT.
  Bay City and Essexville around 300 PM EDT.
  Kawkawlin around 305 PM EDT.

Other locations impacted by this severe thunderstorm include
Carrollton, Garfield, Arthur, Tuscola, Colling, Wisner, Burt,
Ellington, Gera and Buena Vista Township.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4392 8387 4374 8391 4369 8388 4362 8368
      4372 8359 4375 8351 4380 8349 4378 8343
      4374 8347 4367 8346 4367 8315 4366 8312
      4299 8392 4303 8429 4391 8395 4392 8390
TIME...MOT...LOC 1820Z 199DEG 46KT 4311 8412 

HAIL...1.00IN
WIND...70MPH
 
$$

BT

5 follow-up statements

309 
WWUS53 KDTX 101835
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
235 PM EDT Wed Jun 10 2020

MIC049-155-101844-
/O.CAN.KDTX.SV.W.0021.000000T0000Z-200610T1930Z/
Shiawassee MI-Genesee MI-
235 PM EDT Wed Jun 10 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN SHIAWASSEE AND
NORTHWESTERN GENESEE COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southeastern Michigan.

LAT...LON 4374 8391 4369 8388 4362 8368 4372 8358
      4375 8351 4380 8348 4378 8343 4374 8347
      4367 8346 4366 8312 4322 8365 4322 8393
      4313 8393 4313 8425 4391 8395 4392 8390
      4392 8387
TIME...MOT...LOC 1834Z 199DEG 46KT 4328 8404 

$$

MIC017-145-157-101930-
/O.CON.KDTX.SV.W.0021.000000T0000Z-200610T1930Z/
Tuscola MI-Bay MI-Saginaw MI-
235 PM EDT Wed Jun 10 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHWESTERN TUSCOLA...BAY AND SAGINAW COUNTIES...

At 234 PM EDT, severe thunderstorms were located near Chesaning and 
Burt, moving north at 55 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

These severe storms will be near...  
  Bridgeport around 245 PM EDT.
  Saginaw and Zilwaukee around 250 PM EDT.
  Munger around 255 PM EDT.
  Bay City and Essexville around 300 PM EDT.
  Kawkawlin around 305 PM EDT.
  Linwood around 310 PM EDT.

Other locations impacted by these severe thunderstorms include 
Carrollton, Garfield, Arthur, Tuscola, Colling, Wisner, Burt, 
Ellington, Gera and Buena Vista Township.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4374 8391 4369 8388 4362 8368 4372 8358
      4375 8351 4380 8348 4378 8343 4374 8347
      4367 8346 4366 8312 4322 8365 4322 8393
      4313 8393 4313 8425 4391 8395 4392 8390
      4392 8387
TIME...MOT...LOC 1834Z 199DEG 46KT 4328 8404 

HAIL...1.00IN
WIND...70MPH
 
$$

TF

678 
WWUS53 KDTX 101847
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
247 PM EDT Wed Jun 10 2020

MIC017-145-157-101930-
/O.CON.KDTX.SV.W.0021.000000T0000Z-200610T1930Z/
Tuscola MI-Bay MI-Saginaw MI-
247 PM EDT Wed Jun 10 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHWESTERN TUSCOLA...BAY AND SAGINAW COUNTIES...

At 247 PM EDT, a severe thunderstorm was located over Bridgeport, or
near Saginaw, moving northeast at 50 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

This severe storm will be near...
  Reese and Munger around 300 PM EDT.
  Fairgrove and Quanicassee around 310 PM EDT.
  Akron around 315 PM EDT.
  Unionville around 325 PM EDT.

Other locations impacted by this severe thunderstorm include
Carrollton, Garfield, Arthur, Tuscola, Colling, Wisner, Burt,
Ellington, Gera and Buena Vista Township.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4374 8391 4369 8388 4362 8368 4372 8358
      4375 8351 4380 8348 4378 8343 4374 8347
      4367 8346 4366 8312 4322 8365 4322 8393
      4313 8393 4313 8425 4391 8395 4392 8390
      4392 8387
TIME...MOT...LOC 1847Z 211DEG 42KT 4336 8386 

HAIL...1.00IN
WIND...70MPH
 
$$

TF

593 
WWUS53 KDTX 101901
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
301 PM EDT Wed Jun 10 2020

MIC017-145-157-101930-
/O.CON.KDTX.SV.W.0021.000000T0000Z-200610T1930Z/
Tuscola MI-Bay MI-Saginaw MI-
301 PM EDT Wed Jun 10 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHWESTERN TUSCOLA...BAY AND SAGINAW COUNTIES...

At 258 PM EDT, a severe thunderstorm was located over Fairgrove, or 
near Akron, moving northeast at 55 mph. Another severe thunderstorm 
was located over Bridgeport, also moving northeast at 55 mph. 
Additional severe storms are moving through western Saginaw County.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

This severe storm will be near...
  Unionville around 310 PM EDT.
  Gagetown around 320 PM EDT.

Other locations impacted by this severe thunderstorm include
Carrollton, Garfield, Arthur, Tuscola, Colling, Wisner, Burt,
Ellington, Gera and Buena Vista Township.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4374 8391 4369 8388 4362 8368 4372 8358
      4375 8351 4380 8348 4378 8343 4374 8347
      4367 8346 4366 8312 4322 8365 4322 8393
      4313 8393 4313 8425 4391 8395 4392 8390
      4392 8387
TIME...MOT...LOC 1858Z 225DEG 46KT 4353 8355 

HAIL...1.00IN
WIND...70MPH
 
$$

TF

119 
WWUS53 KDTX 101913
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
313 PM EDT Wed Jun 10 2020

MIC017-145-157-101930-
/O.CON.KDTX.SV.W.0021.000000T0000Z-200610T1930Z/
Tuscola MI-Bay MI-Saginaw MI-
313 PM EDT Wed Jun 10 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR NORTHWESTERN TUSCOLA...BAY AND SAGINAW COUNTIES...

At 312 PM EDT, a severe thunderstorm was located near Quanicassee, 
or near Reese, moving northeast at 55 mph. Another cluster of severe 
thunderstorms was located near Chesaning and St. Charles, moving 
northeast at 55 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

These severe storms will be near...  
  Akron around 320 PM EDT.
  Unionville around 325 PM EDT.

Other locations impacted by these severe thunderstorms include 
Carrollton, Garfield, Arthur, Tuscola, Colling, Wisner, Burt, 
Ellington, Gera and Buena Vista Township.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Torrential rainfall is occurring with these storms, and may lead to 
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4374 8391 4369 8388 4362 8368 4372 8358
      4375 8351 4380 8348 4378 8343 4374 8347
      4367 8346 4366 8312 4322 8365 4322 8393
      4313 8393 4313 8425 4391 8395 4392 8390
      4392 8387
TIME...MOT...LOC 1912Z 216DEG 50KT 4353 8366 

HAIL...0.75IN
WIND...70MPH
 
$$

TF

242 
WWUS53 KDTX 101925
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
325 PM EDT Wed Jun 10 2020

MIC017-145-157-101935-
/O.EXP.KDTX.SV.W.0021.000000T0000Z-200610T1930Z/
Tuscola MI-Bay MI-Saginaw MI-
325 PM EDT Wed Jun 10 2020

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN TUSCOLA...BAY AND
SAGINAW COUNTIES WILL EXPIRE AT 330 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds and heavy rain are still possible with these thunderstorms.

A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southeastern Michigan.

LAT...LON 4374 8391 4369 8388 4362 8368 4372 8358
      4375 8351 4380 8348 4378 8343 4374 8347
      4367 8346 4366 8312 4322 8365 4322 8393
      4313 8393 4313 8425 4391 8395 4392 8390
      4392 8387
TIME...MOT...LOC 1925Z 199DEG 46KT 4366 8360 

$$

TF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 10:11 PM EDT	Special Weather Statement	DTX	Midland	34 min
Jun 9, 10:41 PM EDT	Special Weather Statement	DTX	Saint Clair	64 min
Jun 10, 12:41 PM EDT	Severe Thunderstorm Warning	DTX	Bay, Midland, Saginaw	64 min
Jun 10, 12:43 PM EDT	Special Marine Warning	DTX		2 hr
Jun 10, 1:36 PM EDT	Severe Thunderstorm Warning	DTX	Huron, Tuscola	69 min
Jun 10, 1:45 PM EDT	Special Marine Warning	DTX		90 min
Jun 10, 2:59 PM EDT	Severe Thunderstorm Warning	DTX	Genesee, Livingston, Shiawassee	61 min
Jun 10, 3:02 PM EDT	Special Marine Warning	DTX		103 min
Jun 10, 3:09 PM EDT	Severe Thunderstorm Warning	DTX	Huron	81 min
Jun 10, 3:13 PM EDT	Special Marine Warning	DTX		2 hr
Jun 10, 3:21 PM EDT	Severe Thunderstorm Warning	DTX	Livingston, Washtenaw	69 min
Jun 10, 3:27 PM EDT	Severe Thunderstorm Warning	DTX	Lenawee	78 min
Jun 10, 3:29 PM EDT	Flash Flood Warning	DTX	Bay, Saginaw	2 hr
Jun 10, 3:40 PM EDT	Severe Thunderstorm Warning	DTX	Bay, Saginaw, Tuscola	53 min
Jun 10, 3:46 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Sanilac	74 min
Jun 10, 3:46 PM EDT	Severe Thunderstorm Warning	DTX	Genesee, Oakland	74 min
Jun 10, 3:59 PM EDT	Special Marine Warning	DTX		101 min
Jun 10, 4:15 PM EDT	Lakeshore Flood Statement	DTX	Wayne	6 hr
Jun 10, 4:28 PM EDT	Severe Thunderstorm Warning	DTX	Livingston, Washtenaw	62 min
Jun 10, 4:30 PM EDT	Special Marine Warning	DTX		2 hr
Jun 10, 4:32 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	44 min
Jun 10, 4:40 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	80 min
Jun 10, 4:43 PM EDT	Special Marine Warning	DTX		2 hr
Jun 10, 4:44 PM EDT	Severe Thunderstorm Warning	DTX	Lenawee	62 min
Jun 10, 4:58 PM EDT	Special Weather Statement	DTX	Wayne	32 min
Jun 10, 4:59 PM EDT	Special Marine Warning	DTX		2 hr
Jun 10, 5:17 PM EDT	Severe Thunderstorm Warning	DTX	Monroe, Washtenaw, Wayne	34 min
Jun 10, 5:29 PM EDT	Special Marine Warning	DTX		63 min
Jun 10, 5:36 PM EDT	Special Weather Statement	DTX	Wayne	24 min
Jun 10, 5:42 PM EDT	Severe Thunderstorm Warning	DTX	Wayne	33 min
Jun 10, 5:59 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	61 min
Jun 10, 6:07 PM EDT	Special Weather Statement	DTX	Lenawee	23 min
Jun 10, 6:15 PM EDT	Special Weather Statement	DTX	Monroe, Washtenaw, Wayne	45 min
Jun 10, 6:26 PM EDT	Special Weather Statement	DTX	Oakland	34 min
Jun 10, 6:42 PM EDT	Special Marine Warning	DTX		63 min
Jun 10, 6:47 PM EDT	Special Weather Statement	DTX	Monroe	58 min
Jun 10, 7:10 PM EDT	Special Weather Statement	DTX	Wayne	65 min
Jun 10, 7:41 PM EDT	Gale Warning	DTX		10 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2020 Every severe thunderstorm warning in 2020

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.