Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 82, NWS Detroit, MI

August 24, 2021Saginaw County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Aug 24, 2021, 6:52 PM EDT for Saginaw County, Michigan. It was in force for 53 min. 2 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 24, 2021, 6:52 PM EDT (22:52 UTC)
Expired
Aug 24, 2021, 7:45 PM EDT
In force
53 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), 90 km from the middle of the area, began a volume at 22:54 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 24, 7:10 PM EDTTSTM WND DMG2 Ssw Saginaw, MIREPORT OF TREES DOWN ON YOUMANS AND BUNDY ST
Aug 24, 7:14 PM EDTTSTM WND DMG2 Ene Saginaw, MIREPORT OF A TREE DOWN ON BURT AND S 15 ST

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 12:00Z, 10.9 hours before the alert went out and 90 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, Detroit, MI at 12:00Z on 2021-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 298 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2021-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -57 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
298 J/kg
Mixed-layer CIN
-182 J/kg
Mixed-layer LCL
1140 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-57 m²/s²
0-3 km storm-relative helicity
-89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

160 
WUUS53 KDTX 242252
SVRDTX
MIC145-242345-
/O.NEW.KDTX.SV.W.0082.210824T2252Z-210824T2345Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Detroit/Pontiac MI
652 PM EDT Tue Aug 24 2021

The National Weather Service in Detroit/Pontiac has issued a

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

* Until 745 PM EDT.

* At 652 PM EDT, severe thunderstorms were located along a line
  extending from near Freeland to 8 miles north of St. Charles to
  near Elsie, moving east at 35 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Freeland around 655 PM EDT.
  Saginaw, Chesaning, Zilwaukee and Bridgeport around 710 PM EDT.
  Birch Run around 735 PM EDT.
  Frankenmuth around 740 PM EDT.

Other locations impacted by these severe thunderstorms include Brant,
Nelson, Carrollton, Garfield, Arthur, Fenmore, Burt, Gera, Buena
Vista Township and Layton Corners.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4348 8434 4348 8417 4357 8417 4357 8405
      4352 8405 4352 8382 4348 8382 4348 8370
      4323 8370 4322 8371 4322 8393 4313 8393
      4313 8437 4347 8437
TIME...MOT...LOC 2252Z 260DEG 34KT 4356 8413 4342 8415 4315 8431 

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

$$

DG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 24, 6:01 PM EDTSpecial Weather StatementDTXBay, Midland, Saginaw89 min
Aug 24, 6:07 PM EDTSevere Thunderstorm WarningDTXMidland53 min
Aug 24, 6:38 PM EDTSpecial Weather StatementDTXBay, Saginaw52 min
Aug 24, 6:42 PM EDTSpecial Marine WarningDTX93 min
Aug 24, 6:47 PM EDTSevere Thunderstorm WarningDTXBay28 min
Aug 24, 7:08 PM EDTSpecial Weather StatementDTXShiawassee67 min
Aug 24, 7:13 PM EDTSevere Thunderstorm WarningDTXShiawassee62 min
Aug 24, 7:30 PM EDTSevere Thunderstorm WarningDTXGenesee45 min
Aug 24, 7:45 PM EDTSevere Thunderstorm WarningDTXLivingston35 min
Aug 24, 7:52 PM EDTSpecial Weather StatementDTXHuron, Sanilac53 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.