It may seem like a distant reality, but in the coming weeks, as winter edges toward spring, the snow blanketing the ground will begin to melt.
And when it does, cities and towns across the state will be faced with a whole new set of problems, including flooding from storm water runoff overwhelming drainage systems and river ways.
“We’re already starting to talk about those concerns,” said Stephanie Dunten, a meteorologist with the National Weather Service.
Dunten said the worst-case scenario would be a rapid increase in temperatures, accompanied by a sudden rainstorm.
“It would be a big concern, so we’re keeping it in the back of our minds,” she said. “That would cause a lot of ice jams to break, flooding in the rivers, and runoff and urban flooding would be possible.”
For now, temperatures are expected to remain low for the next week, with the forecast including the threat of blizzard-like conditions this weekend.
But like the National Weather Service, officials from the Massachusetts Emergency Management Agency can’t help but keep a keen eye on the impact the historic snowfall could have on municipalities, once those huge mounds finally start to fade away.
“With more snow on the ground, the risk [of flooding] could be greater. But that being said, it really depends on the thaw,” said MEMA spokesman Peter Judge. “It’s something we are going to monitor much more carefully this year, because of the amounts of snow.”
When it does get warmer, residents could experience flooded basements, backyards, and roadways, based on where they live and the history of flooding in those regions.
Judge said homeowners in low-lying areas may face greater risks. “Certainly you want to get flood insurance, if you don’t have flood insurance” he said. “Your normal insurance is not going to cover you if you lose things in your home, or there’s damage to your home from flooding.”
To measure the impact of potential flooding, the National Weather Service regularly studies the snow’s water equivalent using core samples from snowpacks. Experts melt the snow down after it’s trapped inside of a special tube, then measure the water, in inches, to make their predictions.
“From a flood-threat perspective, the melt of water content in the snowpack is very important to know,” said Nicole Belk, the National Weather Service’s in-house hydrologist.
Because many municipalities’ catch basins are probably buried under the current snow, Belk said, a sudden warm up could cause a “pretty quick incident of poor drainage flooding.”
Varying elements contribute to the possibility of rapid snow melt, including high dew points, strong winds, and temperature shifts.