More Rain for the Evening Commute

Blog and Forecast by Meteorologist Nick Morganelli

A WINTER WEATHER ADVISORY IS IN EFFECT FOR AREAS NORTH OF RHODE ISLAND FOR THURSDAY. IF YOU PLAN TO TRAVEL INTO WORCESTER COUNTY TOMORROW, UNTREATED SURFACES MAY BE SLIPPERY. FREEZING RAIN IS EXPECTED AS GROUND TEMPERATURES HOVER NEAR 32 WITH DRIZZLE.

An area of low pressure will push in with round 2 of rain this evening. It should hold off until after the evening commute but be prepared for extra travel time as

 

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This trailing cold front pushes south and returns winter air and precipitation to the ocean state.

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Rain will mix with and transition to snow showers as colder air moves in with the passage of the cold front on Thursday night. An upper level low pressure area will spin over us on Friday kicking off some snow showers. The weekend will feature the return of sunshine but cold air too as we get back to typical January expectations.

Map Pattern

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Hydro what? Meteorologists study hydrometeors, hence, where the name comes from.  Hydrometeor (a water meteor) is just a scientific way of saying precipitation. Most precipitation begins as snow/ice crystals in clouds. As this snow falls, it encounters a variety of temperatures. It can fall through a warm layer, then cold, then warm again and vice-versa. Meteorologists look at the three-dimensional atmosphere using data from weather balloons and computer models that use physics to create a future result, or a forecast. It’s ultimately up to the scientist to determine what will happen. Will it rain? Will snow survive the fall from the cloud? Will the snowflakes melt, then refreeze? If it refreezes in the air before reaching the ground sleet pellets are created and if it rains and surfaces are very cold, below 32 degrees, that rain can freeze on contact and that’s the most dangerous condition; freezing rain. Icing is extremely dangerous and can accumulate on trees and power lines creating power outages. There is a chance for this type of precipitation tomorrow in Worcester county.

Tomorrow and Friday we’ll continue and I’ll share what factors go into determining the type of precipitation and how snowfall is determined.

Today: Patchy a.m. fog and drizzle. Overcast with highs near 46.

Tonight: Rain, moderate at times. Patchy Fog.  Low near 42.

Thursday: Chilly scattered rain showers, 38.

Thursday Night: Light mixed rain/snow showers. Mid 30s.

Friday: Scattered mixed rain/snow showers. High near 38.

Saturday: Sunny and seasonal, near 40.

Sunday: Clouding up, Near 38.

 

Categories: Weather Forecast