[Weather] [2019.02.28 PM] Potential for 2 winter storms Fri night/Sat and Late Sun-Mon

[BOX Operations - NOAA Service Account]

Good Afternoon,

We have quite an active pattern this weekend into early next week with the
potential for 2 winter storms impacting southern New England. The first
storm will be late Friday night into Saturday with the potential for
several inches snow accumulation. The second and stronger storm is expected
late Sunday into Monday, but there is considerable uncertainty with the
storm track. Details below.

*Friday night into Saturday...*

*What/Where/When:*

   - Potential snowfall of 3 to 6 inches.
      - Heaviest snowfall expected across interior RI/SE MA
      - Snow develops near the south coast after midnight Friday night
      reaching northern MA toward daybreak Saturday
      - A  brief period of heavy snow with 1-2 inch/hr snowfall rates
      possible Sat morning across eastern New Eng
      - Hazardous travel conditions with snow covered roads and poor
      visibility late Friday night and Saturday morning
      - Snowfall will be wet and heavy so risk for power outages will
      increase if amounts reach 6 inches
      - Some mixing with rain or sleet possible near the immediate south
      coast and Cape/Islands Saturday
      - Snow gradually tapers off during Saturday afternoon

*Uncertainty:*

   - Axis of heaviest snowfall can still change and it is possible max
   snowfall amounts could exceed 6 inches in some locations.
   - If storm track trends further north, heavier snowfall will shift
   further in the interior with more rain near the coast. A further south
   track would result in more of a glancing blow.
   - Slight cooling in the atmosphere could result in more significant snow
   accumulation for the Cape/Islands.


*Late Sunday into Monday...*

*What:*

   - Significant snow accumulation
   - Impacts to the Monday morning commute

*Where:*

   - Greatest risk for significant snow will be across the interior, north
   and west of the Boston to Providence corridor, but significant snow can't
   be ruled out yet for Boston to Providence

*When:*

   - Snow develops late Sunday and Sunday evening from west to east,
   possibly heavy at times after midnight
   - Snow may change to rain in the coastal plain later Sunday night
   - Precipitation gradually tapers off during Monday

*Uncertainty:*

   - There is still considerable uncertainty with the storm track which
   will determine where rain-snow line sets up and where axis of heaviest snow
   occurs
   - It is still too early to give specific snowfall amounts
   - We will know more each day but probably will not have higher
   confidence in snowfall amounts until Saturday


If you have any questions or would like more information, don't hesitate to
contact us via this email address, on NWSChat <https://nwschat.weather.gov/>,
or at the following:

National Weather Service Boston/Norton, MA
46 Commerce Way
Norton, MA 02766
508.622.3280
Website <http://www.weather.gov/boston> | Facebook
<http://www.facebook.com/NWSBoston> | Twitter
<http://www.twitter.com/NWSBoston>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.massupt.org/pipermail/weather/attachments/20190228/5feb0186/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: StormTotalSnowISC_SFC.png
Type: image/png
Size: 123047 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20190228/5feb0186/attachment-0002.png>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: Onset_SFC.png
Type: image/png
Size: 123802 bytes
Desc: not available
URL: <http://lists.massupt.org/pipermail/weather/attachments/20190228/5feb0186/attachment-0003.png>