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Severe Weather Without An Alert Day, But Why?

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The Doppler 9&10 Weather Team has been busy over the past few days with storms and severe weather. If you have been wondering about our advertised Weather Alert day and where it has been, you are not alone.

Matter of fact some are wondering why the weather alert day was not issued over the past few days. Let’s start with what an alert day is! We have more about it right .

The Weather Team will issue a Weather Alert day if there is severe weather expected with high confidence hours to days ahead of time. During the summer – we look for the potential for the development of tornadoes, damaging winds, and large hail.

With a few reports of hail, damaging winds, and even a tornado what was the weather team looking at to determine not to issue an alert day? explains in the video above.

 

Day-By-Day Breakdown of What Happened

Wednesday: 

  • Low confidence
  • Not Expected to be widespread
  • Unsure of the local boundaries in days prior 
  • Brief weak EF0 Tornado in Roscommon.
  • A stationary front was splitting the area.
  • Warm and moist air to the south, cooler more stable air to the north.
  • Storms developed along the west side of the state due to east winds, west lake breeze, and south winds (south of the front) meeting together.
  • The turning of the winds was brief in Roscommon county, enough to spin up a quick tornado thanks to a STRONG downdraft from a thunderstorm. Since the storm energy was maximized to the storm’s south, the storm collapsed quickly.
  • The storm did not have rotation long enough to detect on radar, hence why NO WARNING was issued.
  • A Tornado Warning is issued when there is CLEAR evidence of persistent rotation within a thunderstorm.

 

Thursday:

  • Low confidence
  • Not Expected to be widespread
  • Unsure of the local boundaries in days prior 
  • NO SEVERE REPORTS
  • The same setup as Wednesday, A stationary front was splitting the area.
  • Warm and moist air to the south, cooler more stable air to the north.
  • Storms developed along the west side of the state due to east winds, west lake breeze, and south winds (south of the front) meeting together.
  • Storms were not able to maintain themselves and collapsed as soon as they developed.
  • Storms need wind shear (none) and Energy (farther south) to maintain strength. Since both were not present at the same time storms fell apart.

 

Friday:

  • Low to Medium confidence
  • Not Expected to be widespread
  • Unsure of the local boundaries in days prior 
  • Damaging winds in Gladwin, Farwell, Harrison, and Winegars
  • A stationary front was splitting the area.
  • Warm and moist air to the south, cooler more stable air to the north.
  • Storms developed along the west side of the state due to east winds, west lake breeze, and south winds (south of the front) meeting together.
  • Storms need wind shear (none) and Energy (farther south) to maintain strength. The Converging Winds, Wind Shear, and Storm Energy were all on coming together leading to a brief moment of intensification across Gladwin and Clare counties.

 

Saturday:

  • Low confidence
  • Not Expected to be widespread
  • Unsure of the local boundaries in days prior
  • Unsure if the trough was enough lift for development 
  • Hail Houghton Lake, Gladwin, and Atlanta
  • A surface trough or Wind Shift was slicing through the area
  • Warm and moist air in place, lifting mechanism not particularly strong.
  • Storms developed along the central side of the state due to west winds, east lake breeze, and south winds (east of the trough) meeting together.
  • Storms need wind shear (none) and Energy (farther south) to maintain strength. The Converging Winds, Wind Shear, and Storm Energy were all on coming together leading to a brief moment of intensification across Roscommon, Isabella, Mecosta, Gladwin, Montmorency, and Oscoda counties.

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