Chris Lambert

Incoming Rain, Warmth and Temp Crash

Posted by Chris Lambert

We do have a freezing rain advisory in place until Midnight for most areas west of 95/Rte.128.  I don't expect a lot of ice, but freezing drizzle/light freezing rain early this evening could glaze the ground.  Even if temps do rise to just above freezing, the ground is so cold due to the recent Arctic air, icy spots are still possible.  Closer to the coast, a southeast wind ushers in temps near and above 40 this evening, so any drizzle or light showers that develop stay liquid.  

Freezing drizzle inland turns to a plain rain overnight and falls at times through midday Monday before drying out. Temps rise into the 40s by Monday's sunrise, and reach 50 by mid to late morning for many in eastern Mass (40s outside 495).   Temps crash back into the 30s in the afternoon, and back to the teens overnight.  Watch for areas of refreeze late-day and the storm could end as a touch of snow, especially outside 495. No significant accumulations expected, but there could be slick spots on the roads for the evening commute as temps slide down.

Most guidance points to 0.50-0.75" of rain with locally up to an 1" across the area by midday Monday.  In terms of roof tops and the rain, we do have a couple things in our favor.  Since the air was so cold during this last event, the snow was the fluffy, low density variety, meaning it doesn't weigh as much as the heavy, wet snow we get.  That'll give us some wiggle room to allow the snow to absorb rain water tonight and Monday without causing widespread structural damage due to overloading since most locations pick up less than 1" of rain (1" of water adds 5.2lbs per square foot).  An exception to that is if you have a huge snow drift on a part of the roof or deck, and you want to knock it down, that's a good idea.  Most susceptible roof tops are the flat ones, especially if there is 2-3 foot snow drifts on it. If that's the case, it's a good idea to clear that off this evening.   If your roof is pitched and has only 6, 8 or 12" on it, the weight of the snow and a 1/2-3/4" of rain should be ok.   If we were talking 2-3" of rain on top of a heavy, wet snow pack, it'd be a different story.  It's still a good idea to make sure the storm drains are cleared to allow the snow melt to run off into them to avoid localized flooding issues.

Cold air plunges us back into a deep freeze by Monday night, and wind chill factors run below 0 all day Tuesday.

Those snowflakes Friday on the 7-day is for a spotty light snow and snow showers moving in.  Minor accumulations are possible, but it doesn't appear to be a big storm at this point.

Chris Lambert

50/50 Weekend

Posted by Chris Lambert

We're off to an iffy start to the weekend as nuisance rain and wet snow moves across the area.  While it's not a well organized area of low pressure, it develops right near us midday, and that'll be enough for a tricky forecast.  Light to moderate  rain/snow is on and off early this morning with a heavier burst of precipitation possible late morning, through mid afternoon in eastern MA (11:00AM-3:00PM).

Posted 01/18/14, 6:54am
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Pete Bouchard

Final Days

Posted by Pete Bouchard

That's the way to get it done! Fine finish to the workweek as sun dominated and winds behaved.

I submit that is the one - and perhaps only - reason these days have felt springlike in this extended thaw. If the winds were gusty on a day like today, the sun (albeit a little stronger these days) is really no help.

Posted 01/17/14, 5:06pm
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Jeremy Reiner

Great Mid-Winter Weather

Posted by Jeremy Reiner

Nice mid-winter weather? Here's how I envision it:


*Mild temps (40 or higher)

*Little to no wind

That last bullet point (IMO) is probably the biggest when outside this time of year. After our morning fog lifts out of here all three of those criteria will be met this afternoon's Friday. #Winning.

Posted 01/17/14, 7:04am
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Pete Bouchard

Colder Temperatures Cometh

Posted by Pete Bouchard

As far as blah days go, this was the blahest.

Fog blanketed the area as winds remained light and variable. We're still looking at some fog, but the thickest part of it should only be during the first half of the night. After that, gentle winds should "mix out" some of the heavily fogged in areas.

Posted 01/16/14, 5:24pm
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