Sunday, February 14, 2021

Significant Ice Event Appears Probable for Tuesday night/Wednesday Morning...

 Expected impacts:

  • Freezing drizzle and then freezing rain are expected to develop around 10pm on Tuesday evening and continue at times through about 12 Noon on Wednesday
  • The freezing rain may fall heavily at times on Tuesday night and Wednesday morning
  • The precipitation may mix with sleet at times, especially within the last few hours of the event
  • Present indications suggest that ice accumulation of 0.1-0.25 inch is probable across much of the area with this event
  • The combination of this event with what will likely be continuing impacts from the event of today through Monday morning will create a particularly hazardous situation across the area for much of this week

Discussion:

Freezing drizzle and then freezing rain are expected to develop around 10pm on Tuesday evening and continue at times through about 12 Noon on Wednesday. The freezing rain may fall heavily at times on Tuesday night and Wednesday morning. The precipitation may mix with sleet at times, especially within the last few hours of the event, but the majority of the precipitation will fall as freezing drizzle and freezing rain based on present indications.

Present indications suggest that ice accumulation of 0.1-0.25 inch is probable across much of the area with this event. The combination of this event with what will likely be continuing impacts from the event of today through Monday morning will create a particularly hazardous situation across the area for much of this week.

As this event will occur shortly after the significant weather event of today through Monday morning, any additional ice accumulation taking place on an already stressed (and in some cases, damaged) infrastructure would obviously be quite problematic. Additionally, temperatures will remain below freezing through at least Wednesday afternoon, meaning that accumulated ice and/or snow from the today/Monday storm will still be in place across much of the area when the event of Tuesday night and Wednesday morning begins.

It is possible that some parts of the area will be without power for a number of days, due to the combined impacts of the today/Monday storm and the Tuesday night/Wednesday storm, and with temperatures well below freezing throughout which will hamper restoration efforts in some cases.

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