Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 13, NWS Detroit, MI

June 20, 2021Lenawee County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jun 20, 2021, 10:44 PM EDT for Lenawee County, Michigan. It was in force for 61 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 20, 2021, 10:44 PM EDT (02:44 UTC)
Expired: Jun 20, 2021, 11:45 PM EDT
In force: 61 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Tornado: Possible
Hail: 0.75 in
Wind: 60.0 mph

County Lenawee County, MI

The radar

The Detroit radar (KDTX), 102 km from the middle of the area, began a volume at 02:47 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.

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 20, 6:06 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 2.7 hours before the alert went out and 105 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: 133 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1501 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

102 
WUUS53 KDTX 210244
SVRDTX
MIC091-210345-
/O.NEW.KDTX.SV.W.0013.210621T0244Z-210621T0345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
1044 PM EDT Sun Jun 20 2021

The National Weather Service in Detroit/Pontiac has issued a

* Severe Thunderstorm Warning for...
  Lenawee County in southeastern Michigan...

* Until 1145 PM EDT.

* At 1044 PM EDT, severe thunderstorms were located along a line
  extending from near Brooklyn to near Addison to near Hillsdale,
  moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Cement City around 1050 PM EDT.
  Hudson and Onsted around 1100 PM EDT.
  Clayton around 1110 PM EDT.
  Tecumseh around 1115 PM EDT.
  Adrian and Britton around 1120 PM EDT.
  Blissfield around 1135 PM EDT.
  Deerfield around 1140 PM EDT.

Other locations impacted by these severe thunderstorms include
Manitou Beach-Devils Lake, Macon, Ridgeway, Palmyra, Tipton, Sand
Creek, Rome Center, Riga, Springville and Cambridge Junction.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4183 8436 4207 8436 4208 8377 4180 8377
TIME...MOT...LOC 0244Z 265DEG 42KT 4207 8423 4198 8441 4188 8461 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

Mann

5 follow-up statements

235 
WWUS53 KDTX 210258
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1058 PM EDT Sun Jun 20 2021

MIC091-210345-
/O.CON.KDTX.SV.W.0013.000000T0000Z-210621T0345Z/
Lenawee MI-
1058 PM EDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR LENAWEE COUNTY...

At 1057 PM EDT, severe thunderstorms were located along a line
extending from near Clinton to near Onsted to near Hudson, moving
east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Tecumseh around 1115 PM EDT.
  Adrian and Britton around 1125 PM EDT.
  Blissfield around 1135 PM EDT.
  Deerfield around 1140 PM EDT.

Other locations impacted by these severe thunderstorms include
Manitou Beach-Devils Lake, Macon, Ridgeway, Palmyra, Tipton, Sand
Creek, Rome Center, Riga, Springville and Cambridge Junction.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4183 8436 4207 8436 4208 8377 4180 8377
TIME...MOT...LOC 0257Z 265DEG 42KT 4208 8405 4199 8423 4189 8443 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

TF

797 
WWUS53 KDTX 210309
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1109 PM EDT Sun Jun 20 2021

MIC091-210345-
/O.CON.KDTX.SV.W.0013.000000T0000Z-210621T0345Z/
Lenawee MI-
1109 PM EDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR LENAWEE COUNTY...

At 1108 PM EDT, severe thunderstorms were located along a line
extending from near Clinton to near Onsted to near Clayton, moving
east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Tecumseh around 1115 PM EDT.
  Britton around 1125 PM EDT.
  Blissfield around 1135 PM EDT.
  Deerfield around 1140 PM EDT.

Other locations impacted by these severe thunderstorms include
Manitou Beach-Devils Lake, Macon, Ridgeway, Palmyra, Tipton, Sand
Creek, Rome Center, Riga, Springville and Holloway.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4183 8436 4199 8436 4207 8413 4208 8377
      4180 8377
TIME...MOT...LOC 0308Z 265DEG 42KT 4209 8390 4200 8408 4190 8428 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

TF

612 
WWUS53 KDTX 210320
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1120 PM EDT Sun Jun 20 2021

MIC091-210345-
/O.CON.KDTX.SV.W.0013.000000T0000Z-210621T0345Z/
Lenawee MI-
1120 PM EDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR CENTRAL LENAWEE COUNTY...

At 1119 PM EDT, severe thunderstorms were located along a line
extending from near Britton to near Tecumseh to near Clayton, moving
east at 55 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Britton around 1130 PM EDT.
  Blissfield around 1135 PM EDT.
  Deerfield around 1140 PM EDT.

Other locations impacted by these severe thunderstorms include Rome
Center, Macon, Riga, Ridgeway, Palmyra, Tipton, Sand Creek, Holloway,
Cadmus and Fairfield.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4183 8436 4189 8436 4207 8399 4208 8377
      4180 8377
TIME...MOT...LOC 0319Z 265DEG 46KT 4204 8380 4194 8397 4183 8413 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

TF

757 
WWUS53 KDTX 210334
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1134 PM EDT Sun Jun 20 2021

MIC091-210345-
/O.CON.KDTX.SV.W.0013.000000T0000Z-210621T0345Z/
Lenawee MI-
1134 PM EDT Sun Jun 20 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM EDT
FOR NORTHEASTERN LENAWEE COUNTY...

At 1133 PM EDT, severe thunderstorms were located along a line
extending from near Britton to near Deerfield to 6 miles south of
Adrian, moving east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Deerfield around 1140 PM EDT.

Other locations impacted by these severe thunderstorms include Macon,
Riga, Ridgeway, Palmyra, Fairfield, Sand Creek, Holloway and Cadmus.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4182 8423 4207 8390 4208 8377 4180 8377
TIME...MOT...LOC 0333Z 264DEG 43KT 4198 8377 4192 8385 4181 8401 

TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
 
$$

TF

489 
WWUS53 KDTX 210346
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
1146 PM EDT Sun Jun 20 2021

MIC091-210356-
/O.EXP.KDTX.SV.W.0013.000000T0000Z-210621T0345Z/
Lenawee MI-
1146 PM EDT Sun Jun 20 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN LENAWEE COUNTY HAS
EXPIRED...
    
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been allowed to expire.

A Severe Thunderstorm Watch remains in effect until 100 AM EDT for
southeastern Michigan.

LAT...LON 4182 8423 4207 8390 4208 8377 4180 8377
TIME...MOT...LOC 0346Z 265DEG 42KT 4199 8358 4193 8366 4182 8382 

$$

TF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:35 PM EDT	Special Marine Warning	DTX		55 min
Jun 20, 8:45 PM EDT	Special Weather Statement	DTX	Wayne	60 min
Jun 20, 8:53 PM EDT	Severe Thunderstorm Warning	DTX	Lenawee	67 min
Jun 20, 9:02 PM EDT	Severe Thunderstorm Warning	DTX	Monroe	58 min
Jun 20, 9:12 PM EDT	Severe Thunderstorm Warning	DTX	Wayne	63 min
Jun 20, 9:20 PM EDT	Special Marine Warning	DTX		85 min
Jun 20, 9:23 PM EDT	Special Marine Warning	DTX		45 min
Jun 20, 9:34 PM EDT	Severe Thunderstorm Warning	DTX	Livingston, Shiawassee	44 min
Jun 20, 9:42 PM EDT	Severe Thunderstorm Warning	DTX	Lenawee, Monroe, Washtenaw, Wayne	63 min
Jun 20, 9:56 PM EDT	Special Weather Statement	DTX	Macomb	64 min
Jun 20, 10:07 PM EDT	Special Weather Statement	DTX	Genesee	53 min
Jun 20, 10:14 PM EDT	Special Weather Statement	DTX	Oakland	61 min
Jun 20, 10:25 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	41 min
Jun 20, 10:42 PM EDT	Special Marine Warning	DTX		93 min
Jun 20, 10:54 PM EDT	Special Weather Statement	DTX	Washtenaw	51 min
Jun 20, 11:09 PM EDT	Special Weather Statement	DTX	Lapeer, Saint Clair, Sanilac	51 min
Jun 20, 11:36 PM EDT	Special Weather Statement	DTX	Monroe	39 min
Jun 20, 11:39 PM EDT	Special Marine Warning	DTX		66 min
Jun 21, 1:09 AM EDT	Special Weather Statement	DTX	Lenawee, Monroe	51 min
Jun 21, 3:15 AM EDT	Special Weather Statement	DTX	Lenawee, Livingston, Washtenaw	60 min
Jun 21, 3:35 AM EDT	Severe Thunderstorm Warning	DTX	Lenawee	40 min
Jun 21, 3:54 AM EDT	Severe Thunderstorm Warning	DTX	Monroe	51 min
Jun 21, 3:56 AM EDT	Special Marine Warning	DTX		35 min
Jun 21, 4:01 AM EDT	Special Weather Statement	DTX	Macomb, Oakland, Washtenaw, Wayne	59 min
Jun 21, 4:58 AM EDT	Special Weather Statement	DTX	Macomb, Saint Clair	62 min
Jun 21, 5:01 AM EDT	Special Marine Warning	DTX		34 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.