Thunderstorms will end tonight and the heat wave is over!

 

AFTERNOON UPDATE...

The warm and humid airmass has arrived and it’s here to stay!

Today, showers will be isolated to scattered, but the heaviest will be across central and western portions of the state. When it does rain, it could be heavy and while not widespread, some rumbles of thunder will be possible. Conversely, at times, there could be intervals of sunshine.

Tomorrow, there is an ongoing threat for showers like today, but it will be lower (and likely confined to far western CT). With enough sunshine, temps inland get close to 90.

The period of wettest weather, statewide, this week will be from Wednesday afternoon through Thursday… while a Flash Flood Watch has not been issued yet, one will probably be posted within the next 24 hours. Heavy rain will be the primary concern with a low risk for a strong/severe storm.

We’ll end the week with temps near 90 Friday, also a risk for thunderstorms as a cold front pushes through the region. Behind the front, for the weekend, we trend less humid!

Meteorologist Mark Dixon

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THIS WEEK

A huge area of high pressure will be centered in the western Atlantic throughout the week. The vast clockwise flow around the high will continue to pump warm, humid air into all New England for many days.

Most consistent will be the weather at night: the nighttime hours will be warm, muggy, and uncomfortable all this week. In many locations, overnight lows will remain at or above the 70-degree mark each night. There will be a little more variation to the days:

TODAY

Overall, Today will be a mostly cloudy day with scattered showers and thunderstorms. A few hefty downpours are likely, but there will be lengthy intervals of dry weather. Highs will be mostly in the 80s with bursts of sunshine from time to time.

TUESDAY

Tomorrow may be the least rainy and hottest day of the week. High pressure will build westward and deepest moisture will shift to the west of Connecticut. While a shower or thunderstorm can’t be ruled out, most of the state will remain dry. We are expecting a little more in the way of sunshine too and this could allow temperatures to rise close to 90 degrees well inland. With high humidity remaining in place, the heat index (the “feels like” reading that factors the effect of both heat and humidity) could rise well into the 90s.

WEDNESDAY

The risk of a shower or thunderstorm may be a little higher again as deeper moisture returns to the state Wednesday. High temperatures will greatly depend on cloud cover. For right now we're calling for highs in the 80s, but we may have a shot at 90 degrees should there be more sunshine. It's going to be another day with high humidity.

THURSDAY

There will be a good chance for showers and thunderstorms Thursday. A slow moving cold front will approach New England from the west. This system will scoop up this moisture-laden air into a big pile and send it skyward, forming a wall of tall clouds capable of producing numerous showers and thunderstorms. This scenario is especially true for central and western portions of Connecticut, closer to this front. It is going to be another day of heat and humidity with highs in the 80s.

FRIDAY

Friday may also bring about the chance for showers and thunderstorms. At this point, the front will slowly move through New England. The humidity will remain high, but it could drop off a little later in the day. Highs should be close to 90 degrees.

THE UPCOMING WEEKEND

The weekend’s weather presents a tricky forecast! The front will probably stall over eastern portions of southern New England and a slightly drier, more stable atmosphere will move into Connecticut. This stability may be enough to give us a mainly dry weekend. And although we may get a little relief from the high humidity, the air will remain warm with highs in the mid to perhaps upper 80s both Saturday and Sunday.

The Early Warning Weather Team

A CONFIRMED TORNADO IN WINDHAM COUNTY

A team of meteorologists from the National Weather Service in Boston/Norton investigated damage that occurred during a severe storm that swept through Ashford Tuesday afternoon around 4:00pm. They determined the damage near Ashford Lake was caused by a weak, EF-0, tornado with estimated wind speeds of up to 86 mph. It was a brief tornado that lasted about 1 minute. The path width was 225 yards and the path length was 0.4 miles. According to the National Weather Service, the last time a tornado was confirmed in Windham County was on July 14, 1992.

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