Alert archive / Michigan / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 22, NWS Gaylord, MI

August 10, 20215 counties in Michigan

NWS Gaylord, MI issued this severe thunderstorm warning at Aug 10, 2021, 10:04 PM EDT for 5 counties in Michigan. It was in force for 41 min. 6 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 10, 2021, 10:04 PM EDT (02:04 UTC)
Expired
Aug 10, 2021, 10:45 PM EDT
In force
41 min
Issued by
NWS Gaylord, MI
Area
Storm-based polygon
Hail
0.88 in
Wind
60.0 mph

Counties Benzie County, MI, Grand Traverse County, MI, Leelanau County, MI, Manistee County, MI, Wexford County, MI

The radar

The NCL Michigan radar (KAPX), 93 km from the middle of the area, began a volume at 02:05 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 10, 10:15 PM EDTTSTM WND GST 462 Ene Elberta, MIAWOS STATION KFKS FRANKFORT - DOW MEMORIAL FIELD.
Aug 10, 10:17 PM EDTTSTM WND DMGEmpire, MITREES AND POWERLINES DOWN COUNTYWIDE BETWEEN APPROXIMATELY 1017 PM AND 1040 PM.
Aug 10, 10:27 PM EDTTSTM WND DMGLake Ann, MITREES AND POWERLINES DOWN.
Aug 10, 10:37 PM EDTTSTM WND DMG3 Sw Traverse City, MITREE DOWN ACROSS HARTMAN ROAD NEAR US-31. FROM TV 7/4.
Aug 10, 10:40 PM EDTTSTM WND DMGTraverse City, MIWIDESPREAD TREE AND POWER LINE DAMAGE COUNTYWIDE BETWEEN APPROXIMATELY 1030 PM AND 1100 PM.
Aug 10, 10:45 PM EDTHAIL 0.752 Sw Greilickville, MIFROM TV 7/4.

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.

IssuedProductOfficeLasted
Aug 10, 8:38 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Alpena, MI (KAPX), launched 00:00Z, 2.1 hours before the alert went out and 276 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 00:00Z on 2021-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 579 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, Alpena, MI at 00:00Z on 2021-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 65 square meters per square second.193958Sfc1 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
579 J/kg
Mixed-layer CIN
-163 J/kg
Mixed-layer LCL
1058 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
65 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.8

Open this sounding in Storm Lab

The text

As transmitted.

514 
WUUS53 KAPX 110204
SVRAPX
MIC019-055-089-101-165-110245-
/O.NEW.KAPX.SV.W.0022.210811T0204Z-210811T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Gaylord MI
1004 PM EDT Tue Aug 10 2021

The National Weather Service in Gaylord has issued a

* Severe Thunderstorm Warning for...
  Leelanau County in northern Michigan...
  Benzie County in northern Michigan...
  Northwestern Wexford County in northern Michigan...
  Grand Traverse County in northern Michigan...
  Northeastern Manistee County in northern Michigan...

* Until 1045 PM EDT.

* At 1003 PM EDT, severe thunderstorms were located along a line
  extending from Sleeping Bear Point to near Empire to near
  Frankfort, moving east at 40 mph.

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

  SOURCE...Radar indicated.

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

* Severe thunderstorms will be near...
  Empire, Sleeping Bear Point, Glen Arbor, Glen Haven and 
  Burdickville around 1010 PM EDT.
  Honor and Platte Township around 1015 PM EDT.
  Beulah, Benzonia and Maple City around 1020 PM EDT.

Other locations in the path of these severe thunderstorms include
Cedar, Lake Ann, Bingham, Fouch, Bendon, Thompsonville, Interlochen,
Greilickville, Interlochen State Park, Copemish, Grawn, Mapleton,
Traverse City, Kingsley, Buckley, Hannah, Karlin, Traverse City State
Park, Williamsburg and Spider Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4477 8619 4478 8613 4488 8611 4495 8604
      4494 8602 4499 8595 4488 8538 4483 8538
      4481 8533 4466 8533 4458 8537 4439 8572
      4460 8628 4463 8630 4471 8630
TIME...MOT...LOC 0203Z 287DEG 35KT 4493 8603 4476 8615 4465 8633 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Cornish
1 follow-up statement
216 
WWUS53 KAPX 110223
SVSAPX

Severe Weather Statement
National Weather Service Gaylord MI
1023 PM EDT Tue Aug 10 2021

MIC019-055-089-101-165-110245-
/O.CON.KAPX.SV.W.0022.000000T0000Z-210811T0245Z/
Leelanau MI-Benzie MI-Wexford MI-Grand Traverse MI-Manistee MI-
1023 PM EDT Tue Aug 10 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR LEELANAU...BENZIE...NORTHWESTERN WEXFORD...GRAND TRAVERSE AND
NORTHEASTERN MANISTEE COUNTIES...

At 1022 PM EDT, severe thunderstorms were located along a line
extending from near Cedar to near Lake Ann to Benzonia, moving east
at 40 mph.

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

SOURCE...Radar indicated.

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

Locations impacted include...
  Bingham, Cedar, Fouch, Bendon, Interlochen, Greilickville, 
  Copemish, Grawn, Interlochen State Park, Traverse City, Traverse 
  City State Park, Mapleton, Elk Rapids, Karlin, Hannah, Kingsley, 
  Williamsburg, Spider Lake, Sherman, Buckley and Mesick.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4477 8619 4478 8613 4488 8611 4495 8604
      4494 8602 4499 8595 4488 8538 4483 8538
      4481 8533 4466 8533 4458 8537 4439 8572
      4460 8628 4463 8630 4471 8630
TIME...MOT...LOC 0222Z 286DEG 33KT 4488 8580 4471 8592 4460 8610 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...0.88 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...70 MPH

$$

Cornish

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 9:00 PM EDTSpecial Marine WarningAPX2 hr
Aug 10, 9:44 PM EDTSevere Thunderstorm WarningAPXAntrim, Charlevoix46 min
Aug 10, 10:30 PM EDTSevere Thunderstorm WarningAPXAntrim, Kalkaska30 min
Aug 10, 10:45 PM EDTSevere Thunderstorm Warning Considerable damage threatAPXBenzie, Grand Traverse, Kalkaska, Leelanau, Missaukee, Wexford45 min
Aug 10, 10:52 PM EDTFlash Flood WarningAPXAntrim, Grand Traverse3 hr
Aug 10, 10:58 PM EDTSevere Thunderstorm WarningAPXAntrim, Crawford, Kalkaska, Otsego32 min
Aug 10, 11:24 PM EDTSevere Thunderstorm WarningAPXAntrim, Crawford, Kalkaska, Otsego51 min
Aug 10, 11:28 PM EDTSevere Thunderstorm WarningAPXCrawford, Kalkaska, Missaukee, Roscommon32 min
Aug 11, 12:13 AM EDTFlash Flood WarningAPXLeelanau3 hr
Aug 11, 12:28 AM EDTSevere Thunderstorm WarningAPXAlcona, Arenac, Iosco, Ogemaw, Oscoda47 min
Aug 11, 12:31 AM EDTSevere Thunderstorm WarningAPXAlcona, Alpena, Montmorency, Oscoda, Presque Isle44 min
Aug 11, 12:37 AM EDTSpecial Marine WarningAPX83 min
Aug 11, 1:46 AM EDTAreal Flood WarningAPXAntrim, Grand Traverse3 hr
Aug 11, 4:12 AM EDTSmall Craft AdvisoryAPX16 hr
Aug 11, 2:52 PM EDTSpecial Marine WarningAPX53 min
Aug 11, 2:59 PM EDTSpecial Weather StatementAPXMackinac31 min
Aug 11, 3:11 PM EDTSpecial Marine WarningAPX64 min
Aug 11, 3:18 PM EDTSpecial Weather StatementAPXChippewa42 min
Aug 11, 3:38 PM EDTSpecial Marine WarningAPX52 min
Aug 11, 3:47 PM EDTSevere Thunderstorm WarningAPXChippewa, Mackinac43 min
Aug 11, 3:58 PM EDTSpecial Marine WarningAPX92 min
Aug 11, 4:11 PM EDTSevere Thunderstorm WarningAPXChippewa, Mackinac49 min
Aug 11, 4:24 PM EDTSpecial Marine WarningAPX2 hr
Aug 11, 4:54 PM EDTSevere Thunderstorm WarningAPXCheboygan51 min
Aug 11, 5:00 PM EDTSevere Thunderstorm WarningAPXEmmet18 min
Aug 11, 5:24 PM EDTSevere Thunderstorm WarningAPXCharlevoix, Cheboygan, Emmet36 min
Aug 11, 5:28 PM EDTSpecial Marine WarningAPX2 hr
Aug 11, 5:30 PM EDTSevere Thunderstorm WarningAPXAntrim, Benzie, Grand Traverse, Kalkaska, Leelanau45 min
Aug 11, 5:43 PM EDTSevere Thunderstorm WarningAPXCheboygan, Emmet, Presque Isle47 min
Aug 11, 5:52 PM EDTSevere Thunderstorm WarningAPXCheboygan, Presque Isle38 min
Aug 11, 6:00 PM EDTSevere Thunderstorm Warning Destructive damage threatAPXBenzie, Leelanau30 min
Aug 11, 6:09 PM EDTSevere Thunderstorm WarningAPXAntrim, Crawford, Kalkaska, Otsego35 min
Aug 11, 6:24 PM EDTSevere Thunderstorm Warning Considerable damage threatAPXAntrim, Benzie, Grand Traverse, Kalkaska, Leelanau51 min
Aug 11, 6:26 PM EDTSpecial Marine WarningAPX34 min
Aug 11, 6:31 PM EDTSevere Thunderstorm WarningAPXCrawford, Montmorency, Oscoda, Otsego44 min
Aug 11, 6:58 PM EDTSevere Thunderstorm WarningAPXAlcona, Alpena, Presque Isle47 min
Aug 11, 7:26 PM EDTSpecial Marine WarningAPX46 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.