Active Early Week Weather
A slow moving low pressure system will keep the weather unsettled for a few days while also resulting in cooler temperatures.
Waves of energy rotating around this low and supported by an active jet stream will be the focal point for showers over the next two days. One of these waves moved through last night with showers and thunderstorms.
The next bundle of atmospheric energy is moving through Ontario, Canada this morning. Widespread showers and a few thunderstorms accompany this disturbance but will dissipate this morning.
This system will arrive in the Finger Lakes during the late morning hours. Showers and a few thunderstorms will start to redevelop, especially across the eastern half of the region. The best chance for thunderstorms will probably be east of Cayuga Lake. Severe weather is not expected.
By the mid afternoon, most of the rain should be east of the region. A few more stray showers will develop late in the afternoon and into the evening hours, but most areas will stay dry throughout this time.
With the showers and accompanying clouds, as well as the start of an influx of cooler air, temperatures today should top out in the mid 70s. Nighttime temperatures will drop into the 50s.
The low will press into northern New England on Tuesday as one final bundle of energy rotates around its backside. This should keep skies cloudy much of the day and bring some showers through during the afternoon. A rumble of thunder cannot be ruled out but will be rare.
Temperatures Tuesday may manage to reach the mid 70s, especially if some sun comes out behind the showers later in the afternoon. Otherwise, expect highs in the low 70s.
The core of the cool air will move into the Finger Lakes on Wednesday. After starting with morning lows in the upper 40s and low 50s, afternoon highs will only reach the upper 60s. This will be the case even with bright, sun-filled skies throughout the day.
Thursday will start off with widespread 40s throughout the region, though a few of the normally warmer areas will probably stay near or above 50 degrees.
Some warmer air will start to move back into the region and highs should jump to the mid and upper 70s. Skies will remain sunny, though a few afternoon fair weather clouds will be likely.
On Friday, temperatures will return to the 80s as south winds develop ahead of the next weather system. Skies will start sunny but thin clouds will increase through the day.
This system will move in on Saturday and will need to be watched. Early indications point to plenty of wind energy in the atmosphere and a cold front to interact with warm, moist air. If this holds and the front moves through late enough in the day, a more robust thunderstorm event could unfold. There is still a lot of time for even one piece of the puzzle to fall out of favor and lead to a reduced or non-event.
Temperatures will retreat to the low 70s for Sunday behind this cold front. It should be a dry day, though, with a mix of sun and clouds.
A warming trend will take hold early next week before another cold front brings more rain and thunderstorms for the middle of next week.
This graphic represents an average over the entire Finger Lakes region. Localized variations should be expected.
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