Tuesday, January 5, 2010

First Decade, First Month, and Seventh Day


WINTER STORM THOUGHTS

Impacts
  • 3 to 5 inches of snow is possible across all of Western Kentucky. 2 to 4 with local amounts around 5 is possible across Middle Tennessee as well. This will be more of a dry and powdery snow as snow ratios will hang around the 14:1-18:1 range with even isolated 20:1 ratios can't be ruled out.
  • Blowing and drifting of snow especially during the day Thursday and into the night will be an issue.
  • The cold ground temperatures due to being days without getting above freezing will allow more hazardous travel and road conditions
  • The main roads even will have problems because of the cold ground temperatures. Some Secondary roads may have near impossible travel conditions in the height of this even.
  • Major Cold Wave is expected afterwards starting later Thursday and though the weekend. Lows below zero and windchills in the -5 to -15 range cannot be ruled out. This could be a very life threatening, and dangerous event so be ready for it.
Timing
  • I posted a map at the top of the page. This map is for when most of the snow will fall from the sky this could be just the first part of the storm.
  • Most of the snowfall and accumulation will occur during the morning rush hour, the morning rush hour will be your worst nightmare moderate to heavy snow showers could be an issue.
  • The second part the blowing of drifting of the snow is expected starting mostly after most of the snow has fallen on late Thursday Afternoon into very early Friday Morning. This could hamper the travel as winds increase to 15 to 25MPH with gusts near 30 to 35MPH. Not quite blizzard conditions, but at some moments it could be near blizzard at brief intervals later Thursday.
  • The cold could be very biting, and a high impact event. Highs barely in the Teen's for Friday and Saturday, with lows near or even below zero is possible. Wind Chills could be in the -5 to -15F range as well.
The Power Outage threat is low. The snow isn't wet, and is more of a dry snow. Some more brief power outage threats are possible with the cold because of the overuse of the heating systems overtaxing the transformers.

2 comments:

Thomas said...

Every 12 hours it is an up and down roller coaster of either low pressure moving higher to our north or lower to our south alternating amounts and precip ratios. Hope everyone else is right and WPSD is wrong with their 1-2 inch nonsense.

FiveNineStorm said...

It will be close. I hope we aren't the man in the middle. 1 to 2 would still cause issues due to blowing snow, and cold ground temperature's.