Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS Detroit, MI

July 6, 2021Saginaw County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jul 6, 2021, 9:31 PM EDT for Saginaw County, Michigan. It was in force for 25 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 6, 2021, 9:31 PM EDT (01:31 UTC)
Expired: Jul 6, 2021, 9:56 PM EDT
In force: 25 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Saginaw County, MI

The radar

The Detroit radar (KDTX), 89 km from the middle of the area, began a volume at 01:34 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 6, 9:36 PM EDT	TSTM WND DMG	2 Sw Saginaw, MI	MULTIPLE LARGE TREE LIMBS DOWN.

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

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 1.5 hours before the alert went out and 89 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: 680 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1346 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

995 
WUUS53 KDTX 070131
SVRDTX
MIC145-070215-
/O.NEW.KDTX.SV.W.0025.210707T0131Z-210707T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
931 PM EDT Tue Jul 6 2021

The National Weather Service in Detroit/Pontiac has issued a

* Severe Thunderstorm Warning for...
  Northeastern Saginaw County in southeastern Michigan...

* Until 1015 PM EDT.

* At 931 PM EDT, a severe thunderstorm was located over Saginaw,
  moving east at 25 mph.

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

  SOURCE...Radar indicated.

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

* This severe thunderstorm will be near...
  Bridgeport around 935 PM EDT.
  Frankenmuth around 1000 PM EDT.

Other locations impacted by this severe thunderstorm include Swan
Creek, Shiawassee National Wildlife Refuge, Carrollton, Arthur, Gera,
Buena Vista Township, Indiantown and Shields.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4349 8412 4348 8382 4348 8370 4331 8370
      4333 8413
TIME...MOT...LOC 0131Z 268DEG 23KT 4341 8395 

HAIL...0.75IN
WIND...60MPH
 
$$

SC

2 follow-up statements

378 
WWUS53 KDTX 070146
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
946 PM EDT Tue Jul 6 2021

MIC145-070215-
/O.CON.KDTX.SV.W.0025.000000T0000Z-210707T0215Z/
Saginaw MI-
946 PM EDT Tue Jul 6 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT
FOR NORTHEASTERN SAGINAW COUNTY...

At 945 PM EDT, a severe thunderstorm was located near Bridgeport, or
near Saginaw, moving east at 25 mph.

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

SOURCE...Radar indicated.

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

This severe storm will be near...
  Frankenmuth around 955 PM EDT.

Other locations impacted by this severe thunderstorm include
Carrollton, Gera, Buena Vista Township, Arthur and Indiantown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4348 8399 4348 8370 4331 8370 4332 8386
      4336 8399
TIME...MOT...LOC 0145Z 268DEG 23KT 4341 8382 

HAIL...0.75IN
WIND...60MPH
 
$$

SC

550 
WWUS53 KDTX 070156
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
956 PM EDT Tue Jul 6 2021

MIC145-070206-
/O.CAN.KDTX.SV.W.0025.000000T0000Z-210707T0215Z/
Saginaw MI-
956 PM EDT Tue Jul 6 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN SAGINAW COUNTY IS
CANCELLED...
                
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 has been cancelled.  However gusty winds and
heavy rain are still possible with this thunderstorm.

LAT...LON 4348 8399 4348 8370 4331 8370 4332 8386
      4336 8399
TIME...MOT...LOC 0155Z 268DEG 23KT 4341 8372 

$$

SC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 8:06 PM EDT	Special Weather Statement	DTX	Saint Clair	54 min
Jul 6, 8:07 PM EDT	Special Marine Warning	DTX		53 min
Jul 6, 8:26 PM EDT	Special Marine Warning	DTX		79 min
Jul 6, 9:22 PM EDT	Special Weather Statement	DTX	Saginaw	53 min
Jul 6, 9:37 PM EDT	Special Marine Warning	DTX		21 min
Jul 6, 9:45 PM EDT	Severe Thunderstorm Warning	DTX	Huron	41 min
Jul 6, 10:13 PM EDT	Special Weather Statement	DTX	Oakland	62 min
Jul 6, 10:16 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Tuscola	45 min
Jul 6, 10:49 PM EDT	Severe Thunderstorm Warning	DTX	Sanilac	32 min
Jul 6, 10:51 PM EDT	Special Weather Statement	DTX	Oakland	24 min
Jul 6, 11:00 PM EDT	Special Weather Statement	DTX	Saginaw	30 min
Jul 7, 3:38 AM EDT	Small Craft Advisory	DTX		24 hr
Jul 7, 12:35 PM EDT	Special Weather Statement	DTX	Huron	70 min
Jul 7, 1:43 PM EDT	Special Weather Statement	DTX	Huron	47 min
Jul 7, 1:49 PM EDT	Severe Thunderstorm Warning	DTX	Shiawassee	41 min
Jul 7, 1:54 PM EDT	Special Weather Statement	DTX	Livingston	51 min
Jul 7, 2:08 PM EDT	Special Weather Statement	DTX	Lenawee	52 min
Jul 7, 2:24 PM EDT	Special Marine Warning	DTX		48 min
Jul 7, 2:39 PM EDT	Severe Thunderstorm Warning	DTX	Monroe	50 min
Jul 7, 2:41 PM EDT	Special Marine Warning	DTX		65 min
Jul 7, 2:47 PM EDT	Special Weather Statement	DTX	Oakland	43 min
Jul 7, 2:47 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Oakland	58 min
Jul 7, 2:53 PM EDT	Special Weather Statement	DTX	Saint Clair	37 min
Jul 7, 2:54 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	46 min
Jul 7, 3:10 PM EDT	Severe Thunderstorm Warning	DTX	Saint Clair	65 min
Jul 7, 3:11 PM EDT	Special Marine Warning	DTX		105 min
Jul 7, 3:26 PM EDT	Severe Thunderstorm Warning	DTX	Macomb	49 min
Jul 7, 3:38 PM EDT	Severe Thunderstorm Warning	DTX	Livingston, Washtenaw	67 min
Jul 7, 3:51 PM EDT	Special Weather Statement	DTX	Oakland	84 min
Jul 7, 4:15 PM EDT	Severe Thunderstorm Warning	DTX	Saint Clair	30 min
Jul 7, 4:18 PM EDT	Severe Thunderstorm Warning	DTX	Oakland	57 min
Jul 7, 5:07 PM EDT	Special Weather Statement	DTX	Wayne	53 min
Jul 7, 5:08 PM EDT	Special Marine Warning	DTX		68 min
Jul 7, 5:09 PM EDT	Severe Thunderstorm Warning	DTX	Macomb	51 min
Jul 7, 5:31 PM EDT	Areal Flood Advisory	DTX	Macomb, Oakland	112 min
Jul 7, 5:44 PM EDT	Special Weather Statement	DTX	Macomb	31 min
Jul 7, 7:07 PM EDT	Special Weather Statement	DTX	Monroe	53 min
Jul 7, 7:22 PM EDT	Areal Flood Advisory	DTX	Genesee	99 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.