A streak of unseasonably warm 50-to-60-degree high temperatures on the Seacoast this week will be short-lived, according to meteorologist Michael Sempa.
Thursday is one of the warmest days on record this year, with temperatures in the low to mid 60s across the Seacoast. By Saturday, those mid-day temperatures will dip back into the lower digits, between 30 and 40 degrees, with lows in the 20s and below zero wind chill possible in the evenings.
Sempa, of the National Weather Service, said the region is in a pattern that is seeing a stronger flow of air coming from the Southwest.
"We have a pretty good ridge of high pressure over the Atlantic right now and that's just pushing warm air in from the Gulf of Mexico and the southern states as well," Sempa said. "We are just set up in this pattern where it locks in a few days, but eventually it's gonna break down and bring temperatures back to normal in the mid-30s to mid-40s for high temperatures, and maybe a little below normal for a day or two. We'll start the shift on Saturday."