Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 88, NWS Detroit, MI

August 28, 2021Huron County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Aug 28, 2021, 6:16 PM EDT for Huron County, Michigan. It was in force for 59 min. 7 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 28, 2021, 6:16 PM EDT (22:16 UTC)
Expired
Aug 28, 2021, 7:15 PM EDT
In force
59 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Huron County, MI

The radar

The Detroit radar (KDTX), 147 km from the middle of the area, began a volume at 22:18 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

TimeReportWhereRemark
Aug 28, 6:19 PM EDTMARINE TSTM WIND 57Caseville, MIA MARINE THUNDERSTORM WIND GUST OF 57 MPH, 50 KNOTS, MEASURED AT CASEVILLE LIGHT.
Aug 28, 6:20 PM EDTTSTM WND DMGCaseville, MICOUNTY DISPATCH REPORTED MULTIPLE BOATS WERE OVERTURNED DUE TO STRONG MARINE THUNDERSTORM WINDS IN CASEVILLE...PORT AUSTIN...AND PORT HOPE. TIME OF REPORT CORRESPONDS TO RADAR ESTIMATE OF INITIAL INCIDENTS.
Aug 28, 6:20 PM EDTTSTM WND DMGCaseville, MIMULTIPLE POWER LINES DOWN. TIME ESTIMATED BY RADAR.
Aug 28, 6:30 PM EDTTSTM WND DMGPort Austin, MIMULTIPLE POWER LINES DOWN. TIME ESTIMATED BY RADAR.
Aug 28, 6:47 PM EDTTSTM WND DMGPort Hope, MIMULTIPLE POWER LINES DOWN. TIME ESTIMATED BY RADAR.
Aug 28, 6:55 PM EDTMARINE TSTM WIND 452 Ese Huron City, MIA MARINE THUNDERSTORM WIND GUST OF 45 MPH, 39 KNOTS, MEASURED AT PORT HOPE ASOS.
Aug 28, 7:00 PM EDTTSTM WND DMG2 Ene Caseville, MIMULTIPLE TREES DOWN.

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

The nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 10.3 hours before the alert went out and 132 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-pSkew-T log-p diagram, Alpena, MI at 12:00Z on 2021-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 32 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Alpena, MI at 12:00Z on 2021-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 18 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
-229 J/kg
Mixed-layer LCL
1106 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
18 m²/s²
0-3 km storm-relative helicity
54 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

443 
WUUS53 KDTX 282216
SVRDTX
MIC063-282315-
/O.NEW.KDTX.SV.W.0088.210828T2216Z-210828T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
616 PM EDT Sat Aug 28 2021

The National Weather Service in Detroit/Pontiac has issued a

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

* Until 715 PM EDT.

* At 616 PM EDT, severe thunderstorms were located along a line
  extending from 9 miles northwest of Port Austin to 6 miles
  northwest of Caseville to 11 miles south of Au Gres, moving east at
  30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Caseville around 625 PM EDT.
  Port Austin around 645 PM EDT.
  Kinde around 650 PM EDT.
  Pigeon around 655 PM EDT.
  Elkton around 705 PM EDT.
  Bad Axe, Harbor Beach and Port Hope around 715 PM EDT.

Other locations impacted by these severe thunderstorms include
Pinnebog, Port Crescent State Park, Redman, Filion, Huron City,
Helena, Rapson, Grindstone City, Bay Port and Verona.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4412 8289 4407 8285 4402 8272 4374 8258
      4379 8348 4394 8338 4395 8334 4398 8331
      4401 8321 4403 8310 4406 8306
TIME...MOT...LOC 2216Z 282DEG 27KT 4416 8307 4402 8335 4388 8366 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

DG
2 follow-up statements
348 
WWUS53 KDTX 282232
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
632 PM EDT Sat Aug 28 2021

MIC063-282315-
/O.CON.KDTX.SV.W.0088.000000T0000Z-210828T2315Z/
Huron MI-
632 PM EDT Sat Aug 28 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR HURON COUNTY...

At 632 PM EDT, severe thunderstorms were located along a line
extending from 7 miles northeast of Port Austin to near Caseville to
9 miles northwest of Sebewaing, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

These severe storms will be near...
  Port Austin around 650 PM EDT.
  Kinde around 655 PM EDT.
  Pigeon around 705 PM EDT.
  Elkton around 715 PM EDT.
  Port Hope around 720 PM EDT.
  Harbor Beach around 725 PM EDT.
  Bad Axe around 730 PM EDT.

Other locations impacted by these severe thunderstorms include
Pinnebog, Port Crescent State Park, Redman, Filion, Huron City,
Helena, Rapson, Grindstone City, Bay Port and Verona.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4407 8299 4407 8286 4401 8272 4374 8259
      4379 8347 4393 8338 4394 8334 4400 8325
      4402 8310 4405 8306
TIME...MOT...LOC 2232Z 281DEG 27KT 4414 8292 4400 8320 4381 8360 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

DG
351 
WWUS53 KDTX 282312
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
712 PM EDT Sat Aug 28 2021

MIC063-282322-
/O.EXP.KDTX.SV.W.0088.000000T0000Z-210828T2315Z/
Huron MI-
712 PM EDT Sat Aug 28 2021

...THE SEVERE THUNDERSTORM WARNING FOR HURON COUNTY WILL EXPIRE AT
715 PM EDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However, heavy 
rain is still likely with these thunderstorms. This rain will cause 
localized minor flooding in poorly drained areas.

LAT...LON 4407 8299 4407 8286 4401 8272 4374 8259
      4379 8347 4393 8338 4394 8334 4400 8325
      4402 8310 4405 8306
TIME...MOT...LOC 2312Z 282DEG 27KT 4408 8254 4394 8282 4375 8323 

$$

DG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 3:42 AM EDTHeat AdvisoryDTXGenesee, Lapeer, Lenawee, Livingston, Macomb, Monroe and 5 more16 hr
Aug 28, 4:25 AM EDTSpecial Weather StatementDTXBay, Midland65 min
Aug 28, 3:45 PM EDTSpecial Weather StatementDTXSaint Clair60 min
Aug 28, 5:06 PM EDTSpecial Weather StatementDTXBay, Midland84 min
Aug 28, 5:26 PM EDTSpecial Marine WarningDTX94 min
Aug 28, 5:46 PM EDTSpecial Weather StatementDTXSaginaw74 min
Aug 28, 5:52 PM EDTSevere Thunderstorm WarningDTXSaginaw68 min
Aug 28, 6:19 PM EDTSpecial Marine WarningDTX86 min
Aug 28, 6:22 PM EDTSevere Thunderstorm WarningDTXBay38 min
Aug 28, 6:43 PM EDTSpecial Weather StatementDTXTuscola62 min
Aug 28, 6:51 PM EDTSevere Thunderstorm WarningDTXHuron, Tuscola54 min
Aug 28, 6:59 PM EDTSpecial Marine WarningDTX31 min
Aug 28, 7:02 PM EDTSevere Thunderstorm WarningDTXSaginaw58 min
Aug 28, 7:07 PM EDTAreal Flood AdvisoryDTXSaginaw3 hr
Aug 28, 7:11 PM EDTSevere Thunderstorm WarningDTXSanilac64 min
Aug 28, 7:41 PM EDTSpecial Weather StatementDTXGenesee, Lapeer, Shiawassee79 min
Aug 28, 7:59 PM EDTSpecial Marine WarningDTX91 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2021Every 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.