Posted Friday, 06/05/2020 8:50 AM EDT
A spotty shower or storm will be possible in some areas today under muggy humidity. No severe thunderstorms are expected. High pressure will build behind a cold front and bring sunny and less humid weather for the weekend.
A blanket of clouds this morning will help dampen instability initially but these will mix out into cumulus clouds later. Still, a layer of warm air at mid-levels will provide for a ‘cap’ and prevent air parcels from rising much today. That will help keep the threat for thunderstorms at low levels across our area this afternoon and evening. So, while an isolated shower or thunderstorm will remain in the forecast today, most neighborhoods should stay dry.
Temperatures locally today should hover around the mid-80s and with dew points in the mid-60s it will be another muggy day in the Valley. However, a low pressure system moving through Quebec will drag a cold front through east-central Ohio tonight. The front will cross our area with little fanfare but it will bring a change in the airmass for our weekend.
Tonight brings a full moon and a penumbral eclipse. A penumbral eclipse means only the Earth’s outer shadow crosses the moon and it’s difficult to notice much dimming. In any event, skies locally should be partly cloudy overnight.
High pressure will build behind the cold front through Saturday. While we may see some morning cloudiness the clouds will gradually erode and ample sunshine will dominate the afternoon. Temperatures on Saturday will top out in the low-80s locally and it will become noticeably less humid as drier air brings those dew points down.
Sunday looks to be a very pleasant summer day. We can expect few clouds, bright sun, and afternoon highs locally in the upper-70s. The lower humidity will make for an exquisite day. Nighttime temperatures will be in the pleasantly cool 50s and perfect for open-window sleeping.
A southerly flow returns on Monday as an upper-level ridge shifts east. That will bring back warmer temperatures and increasing moisture to eastern Ohio. Temperatures will return to the mid-80s range and those dew points will swing upwards again. By Tuesday we’ll be taking a run at the low-90s for the afternoon high temperature.
While Tuesday looks like a very uncomfortably hot and humid day, that ridge of high pressure that’s responsible might just be strong enough to shield us from whatever is left of Cristobol. There is still a lot fo uncertainty regarding how those tropical remnants play out next week but there is the potential that tropical moisture could stay off to our west.
A slow-moving cold front may bring the threat for showers and storms back to the Valley Wednesday night and Thursday.