1:10 PM (Monday) | ***Strong-to-severe thunderstorms late today/tonight in the DC-to-Philly-to-NYC corridor...all ahead of the next cold front…another comfortable air mass moves for the mid-week***
Paul Dorian
Thunderstorms will visit the I-95 corridor in two waves later today and tonight with scattered strong-to-severe storms late in the afternoon (shown on this forecast map) and a second line to monitor later tonight. Map courtesy NOAA, tropicalttidbits.com
Overview
Another very comfortable air mass is headed to the Mid-Atlantic region and it will result in some very nice weather for the mid-week time period; however, we may have to deal with some strong-to-severe thunderstorm activity before we get there. A strong upper-level trough of low pressure is digging southeastward today across the Great Lakes and it is combining with a couple of surface-level cold fronts to produce strong thunderstorms in the Ohio Valley and western Mid-Atlantic. This thunderstorm activity is likely to reach the I-95 corridor by later today or early tonight and some of the storms can reach severe levels with potentially damaging wind gusts and hail. It won’t be as warm on Tuesday as the cold front works its way through the region and there will be a lingering chance of showers and storms. Much more comfortable air will be quite noticeable by tomorrow night with temperatures dropping way down in the 50’s in the overnight and it’ll remain very pleasant on Wednesday and Thursday.
Thunderstorms will visit the I-95 corridor in two waves later today and tonight with scattered strong-to-severe storms late in the afternoon and a second line to monitor later tonight (shown on this forecast map). Map courtesy NOAA, tropicalttidbits.com
Details
A couple of lines of thunderstorms have formed at mid-day across the Ohio Valley and western part of the Mid-Atlantic region and this initial activity will reach the I-95 corridor by the late afternoon hours and then the second batch later tonight. Any of these late day and nighttime thunderstorms can reach severe levels by the time they make it to the immediate DC-to-Philly-to-NYC corridor. A strong upper-level trough of low pressure and two separate surface cold frontal systems are producing instability in the atmosphere resulting in the expanding and intensifying thunderstorm activity. After the passage of the initial front, temperatures will trend downward on Tuesday and then noticeably cooler air will flood the region on Tuesday night following the passage of the secondary cold front. There can be some lingering shower and thunderstorm activity on Tuesday, but the better chance for severe weather will be from later today through tonight.
Very comfortable air moves into the Mid-Atlantic region by Tuesday night and the next ten days look pretty decent to start the summer season and most areas east of the Rockies will be below-normal. Map courtesy Weather Bell Analytics, NOAA
On Wednesday, skies will clear and temperatures and humidity levels will be quite comfortable for the beginning of the summer season. In fact, the next ten days look like they’ll feature normal-to-slightly below-normal temperatures in the Mid-Atlantic region and cooler-than-normal weather will dominate the Midwest and central Plains. At the same time, the western US will continue to see temperatures soar to well above-normal normal levels as upper-level high pressure ridging continues to dominate the scene in that part of the nation.
Meteorologist Paul Dorian
Peraton
peratonweather.com
Follow us on Facebook, Twitter, YouTube
Video discussion: