Alert archive / Michigan / Tornado Warnings in 2021

Tornado Warning 6, NWS Detroit, MI

July 24, 2021Huron County, Michigan

NWS Detroit, MI issued this tornado warning at Jul 24, 2021, 4:26 PM EDT for Huron County, Michigan. It was in force for 37 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 24, 2021, 4:26 PM EDT (20:26 UTC)
Expired
Jul 24, 2021, 5:03 PM EDT
In force
37 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Tornado
Observed
Hail
0.75 in

County Huron County, MI

The radar

The Detroit radar (KDTX), 152 km from the middle of the area, began a volume at 20:27 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
Jul 24, 4:34 PM EDTTORNADO1 Sse Port Austin, MISEVERAL REPORTS AND SOCIAL MEDIA PHOTO OF TORNADO ON GROUND NEAR PORT AUSTIN.

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
Jul 24, 3:16 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 8.4 hours before the alert went out and 125 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 2021-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 597 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 12:00Z on 2021-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 140 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
597 J/kg
Mixed-layer CIN
-45 J/kg
Mixed-layer LCL
737 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
140 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.9

Open this sounding in Storm Lab

The text

As transmitted.

639 
WFUS53 KDTX 242026
TORDTX
MIC063-242115-
/O.NEW.KDTX.TO.W.0006.210724T2026Z-210724T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Detroit/Pontiac MI
426 PM EDT Sat Jul 24 2021

The National Weather Service in Detroit/Pontiac has issued a

* Tornado Warning for...
  Northeastern Huron County in southeastern Michigan...

* Until 515 PM EDT.

* At 426 PM EDT, a confirmed waterspout was located just offshore
  over Port Austin, moving east at 45 mph.

  HAZARD...Tornado.

  SOURCE...Weather spotters confirmed waterspout moving onshore.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This tornado will be near...
  Port Hope around 445 PM EDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 4407 8286 4400 8270 4388 8262 4395 8316
      4402 8312 4403 8310 4407 8305
TIME...MOT...LOC 2026Z 276DEG 38KT 4405 8295 

TORNADO...OBSERVED
HAIL...<.75IN

$$

KDK
4 follow-up statements
803 
WWUS53 KDTX 242036 RRA
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
436 PM EDT Sat Jul 24 2021

MIC063-242115-
/O.CON.KDTX.TO.W.0006.000000T0000Z-210724T2115Z/
Huron MI-
436 PM EDT Sat Jul 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
NORTHEASTERN HURON COUNTY...
    
At 435 PM EDT, a confirmed tornado was located near Port Austin,
moving east at 40 mph.

HAZARD...Damaging tornado.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This tornado will be near...
  Port Hope around 450 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Grindstone City and Huron City.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4400 8270 4388 8262 4397 8299 4402 8300
      4407 8298 4407 8286
TIME...MOT...LOC 2035Z 285DEG 34KT 4401 8290 

TORNADO...OBSERVED
HAIL...<.75IN

$$

RBP
434 
WWUS53 KDTX 242045 RRA
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
445 PM EDT Sat Jul 24 2021

MIC063-242115-
/O.CON.KDTX.TO.W.0006.000000T0000Z-210724T2115Z/
Huron MI-
445 PM EDT Sat Jul 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
NORTHEASTERN HURON COUNTY...
    
At 445 PM EDT, a confirmed tornado was located near Port Hope, moving
east at 40 mph.

HAZARD...Damaging tornado.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Port Hope, Huron City and Grindstone City. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4400 8270 4388 8262 4388 8263 4397 8290
      4406 8290 4407 8286
TIME...MOT...LOC 2045Z 278DEG 35KT 4400 8278 

TORNADO...OBSERVED
HAIL...<.75IN

$$

RBP
373 
WWUS53 KDTX 242054
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
454 PM EDT Sat Jul 24 2021

MIC063-242115-
/O.CON.KDTX.TO.W.0006.000000T0000Z-210724T2115Z/
Huron MI-
454 PM EDT Sat Jul 24 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
NORTHEASTERN HURON COUNTY...
    
At 454 PM EDT, a confirmed tornado was located near Port Hope, moving
east at 45 mph.

HAZARD...Damaging tornado.

SOURCE...Weather spotters confirmed tornado.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

Locations impacted include...
Port Hope and Huron City. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.

&&

LAT...LON 4400 8270 4388 8262 4396 8287 4405 8287
      4407 8286
TIME...MOT...LOC 2054Z 292DEG 38KT 4401 8279 

TORNADO...OBSERVED
HAIL...<.75IN

$$

RBP
288 
WWUS53 KDTX 242103
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
503 PM EDT Sat Jul 24 2021

MIC063-242111-
/O.CAN.KDTX.TO.W.0006.000000T0000Z-210724T2115Z/
Huron MI-
503 PM EDT Sat Jul 24 2021

...THE TORNADO WARNING FOR NORTHEASTERN HURON COUNTY IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning has been cancelled.  However gusty winds are 
still possible with a severe thunderstorm near Caseville. 

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for 
southeastern Michigan.

Remember, a Severe Thunderstorm Warning still remains in effect for
northern Huron County until 515 pm EDT.

LAT...LON 4400 8270 4388 8262 4396 8287 4405 8287
      4407 8286
TIME...MOT...LOC 2100Z 276DEG 38KT 4400 8267 

$$

RBP

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 2:25 PM EDTSpecial Marine WarningDTX95 min
Jul 24, 3:38 PM EDTSevere Thunderstorm WarningDTXBay, Midland67 min
Jul 24, 3:51 PM EDTSpecial Marine WarningDTX114 min
Jul 24, 4:03 PM EDTSevere Thunderstorm WarningDTXBay, Midland, Saginaw57 min
Jul 24, 4:05 PM EDTSpecial Marine WarningDTX55 min
Jul 24, 4:08 PM EDTSevere Thunderstorm WarningDTXHuron67 min
Jul 24, 4:37 PM EDTSevere Thunderstorm WarningDTXHuron, Sanilac, Tuscola53 min
Jul 24, 4:46 PM EDTTornado WarningDTXSaginaw44 min
Jul 24, 4:57 PM EDTSevere Thunderstorm WarningDTXBay, Genesee, Saginaw, Shiawassee63 min
Jul 24, 5:11 PM EDTSevere Thunderstorm WarningDTXGenesee, Lapeer, Tuscola64 min
Jul 24, 5:23 PM EDTSevere Thunderstorm WarningDTXTuscola36 min
Jul 24, 5:49 PM EDTSevere Thunderstorm WarningDTXSanilac37 min
Jul 24, 6:06 PM EDTSevere Thunderstorm WarningDTXShiawassee54 min
Jul 24, 6:07 PM EDTSpecial Marine WarningDTX68 min
Jul 24, 6:11 PM EDTSevere Thunderstorm WarningDTXGenesee, Lapeer64 min
Jul 24, 6:21 PM EDTTornado WarningDTXGenesee22 min
Jul 24, 6:43 PM EDTSevere Thunderstorm WarningDTXLapeer62 min
Jul 24, 7:07 PM EDTSpecial Weather StatementDTXLivingston, Macomb, Oakland, Shiawassee53 min
Jul 24, 7:19 PM EDTAreal Flood AdvisoryDTXGenesee, Lapeer, Oakland, Shiawassee3 hr
Jul 24, 7:40 PM EDTSevere Thunderstorm WarningDTXLivingston, Oakland80 min
Jul 24, 7:52 PM EDTTornado WarningDTXMacomb22 min
Jul 24, 7:56 PM EDTTornado WarningDTXOakland26 min

Nearby

Tornado Warnings in Michigan, 2021Every tornado warning in 2021Tornadoes 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.