High pressure builds across the Great Lakes, the Mississippi & Ohio Valleys today...into the Mid-Atlantic states by Friday. Hazy, hot & humid forecast triggers widespread heat advisories/warnings through the weekend. Chance for a few rumbles of thunder lasts from Friday through Monday as well. Cooler air filters in Tuesday of next week.
For today...strong high pressure brings lots of hot air & very high dew points into our area. More widespread sunshine is forecast for today through the end of the workweek. Heat advisories have been expanded to reflect heat indices reaching 100 degrees. A calm overnight is expected with mainly clear skies and a low around 70. Patchy river valley fog will develop again overnight, burning off by mid-morning Thursday.
Forecast for Thursday includes sunshine, highs in the mid/upper 90s & heat indices closing in on 105. Although our forecast will remain generally dry, the near saturated tropical air mass may trigger an isolated storm or two in the afternoon/evening.
Highs Friday will be about the same as Thursday, mid/upper 90s, heat indices around 100. High pressure will begin to slide east. Meanwhile, a weak cold front will sag south from the Great Lakes late Friday. This may trigger an isolated storm Friday evening/night. Any storms would break the brutal heat leftover from Friday afternoon.
More low level moisture will gradually seep northward from the southeastern US this weekend. This will trigger scattered showers and storms Saturday, Sunday & Monday. Daytime highs over the weekend will still reach the mid 90s. Overnight lows will stay in the low 70s, depending on how much cloud cover develops over the weekend. Will refine the weekend forecast tomorrow & Friday.
Scattered showers & storms will linger into Monday. Highs will peak around 90. Cooler air will filter into our area Tuesday of next week. Temperatures will reflect a more seasonal trend, ranging from the upper 60s to the mid 80s.
For today...strong high pressure brings lots of hot air & very high dew points into our area. More widespread sunshine is forecast for today through the end of the workweek. Heat advisories have been expanded to reflect heat indices reaching 100 degrees. A calm overnight is expected with mainly clear skies and a low around 70. Patchy river valley fog will develop again overnight, burning off by mid-morning Thursday.
Forecast for Thursday includes sunshine, highs in the mid/upper 90s & heat indices closing in on 105. Although our forecast will remain generally dry, the near saturated tropical air mass may trigger an isolated storm or two in the afternoon/evening.
Highs Friday will be about the same as Thursday, mid/upper 90s, heat indices around 100. High pressure will begin to slide east. Meanwhile, a weak cold front will sag south from the Great Lakes late Friday. This may trigger an isolated storm Friday evening/night. Any storms would break the brutal heat leftover from Friday afternoon.
More low level moisture will gradually seep northward from the southeastern US this weekend. This will trigger scattered showers and storms Saturday, Sunday & Monday. Daytime highs over the weekend will still reach the mid 90s. Overnight lows will stay in the low 70s, depending on how much cloud cover develops over the weekend. Will refine the weekend forecast tomorrow & Friday.
Scattered showers & storms will linger into Monday. Highs will peak around 90. Cooler air will filter into our area Tuesday of next week. Temperatures will reflect a more seasonal trend, ranging from the upper 60s to the mid 80s.
850 millibars map courtesy of Unysis Weather depicts cooler air mixing in by next Tuesday morning. But first, we have to survive the weekend.
