Hot, humid, and a bit stormy

finger lakes weather forecast monday august 6 2018 heat advisory thunderstorms
Heat advisories are in place for much of the Finger Lakes for Monday. A few storms will be possible today, followed by a better chance Tuesday and Wednesday.

Heat Advisories Monday

An increase in heat and humidity has prompted heat advisories for most of the Finger Lakes region, with Tompkins, Schuyler, Chemung, and Tioga counties being added to the advisory overnight.

Temperatures are starting mostly in the low 70s this morning and will quickly ruse under sunny skies and a southwest wind.

By midday, heat index values will be pushing into the 90s with the temperature not far behind.

Highs will reach the low 90s across the northern and central Finger Lakes, with highs in the upper 80s to near 90 degrees across more southern areas.

With dewpoints in the upper 60s to near 70 degrees, the heat index will max out between 94-98 degrees this afternoon, creating a risk for heat-related stress.

We have been no stranger to heat this summer, but as a reminder, keep hydrated, avoid exertion during the midday and afternoon hours, and don’t forget the elderly, children, and pets.

Temperatures tonight will be similar to last night, with most areas only slipping back to the low 70s.

Tuesday and Wednesday will not be as hot thanks to an increase in thunderstorm chances, but highs Tuesday will still reach the mid and upper 80s.

Scattered Storms Monday, Better Chance Tuesday-Wednesday

With all of the heat and humidity in place today, the atmosphere will have plenty of fuel for thunderstorm development.

Missing, however, will be a major forcing mechanism to trigger the thunderstorm development.

However, there are still several avenues for small-scale forcing that should trigger at least some thunderstorm activity late this afternoon.

The prime areas for storm development will be downwind of Lake Erie over the western Finger Lakes and over the northeastern Finger Lakes where the lake breeze of Lake Ontario will act as a mini-cold front.

Elevation differences can also trigger some isolated thunderstorms, so the southern portions of the Finger Lakes should be weather aware, too. In all, almost all of the region has some avenue for at least a chance of a thunderstorm. Many will not see storms today, but frequent lightning will be a hazard with any storms that do pop up.

Thunderstorms will be more likely on Tuesday and Wednesday as a front moves through. Some of these storms could have strong winds and hail in addition to the frequent lightning, especially on Tuesday.

At this time, a major severe weather event is less likely, but the potential will be monitored closely. Storms will be most likely after 3 pm on Tuesday and any time Wednesday.

Quiet weather is expected for Thursday, while Friday could have a few more showers to contend with, though this remains uncertain currently.

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Meteorologist Drew Montreuil
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Meteorologist Drew Montreuil has been forecasting the weather in the Finger Lakes region since 2006 and has degrees in meteorology from SUNY Oswego (B.S. with Honors) and Cornell (M.S.). When not forecasting, he can be found working at the local library, making goat milk soap, running until his legs burn, or playing with his three young boys.