Maryland heads into the fryer this week
Hope you enjoyed the seasonable temperatures and low humidity over the weekend, because we are so done with that now.
Forecasters say Marylanders will be seeing temperatures and humidity rising all week, threatening the 100-degree mark by Thursday afternoon and topping it on Friday. We can count on another string of bad air days, too. Maryland west of the bay and east of Hagerstown is already under a Code Orange Air Quality alert today, meaning air pollution is expected to reach levels considered unhealthy for sensitive groups.
"This is genuinely hot air coming, with dew points somewhere around 70 degrees. Excessive heat watches may be needed by midweek," National Weather Service forecasters said in today's morning weather discussion.
And why not? On average, this is the hottest week of the year for Baltimore. The average daily high is 88 degrees. Daily record highs are all above 100 degrees from the 14th until the 29th, when we see our first record drop back to 99 degrees.
The culprit is our old summer friend, the Bermuda High. High pressure centered off the Atlantic coast by Wednesday spins clockwise, pumping hot, humid air our way from the Gulf of Mexico.
But first, we're looking at a forecast high for BWI-Marshall Airport today of 94 degrees. A cold front to our north is bringing some showers and thunderstorms to Pennsylvania later today, and we may see some clouds drift in from that later today. By tonight, showers and thunderstorms could reach communities in the northern and northeastern sections of Sterling's forecast area. Some could become severe, posing risks of flash flooding in the urban corridor. But the computers can't agree on the exact timing or severity of the storms. We don't need severe weather but we can sure suse the rain.
The weak cold front will deliver slightly cooler air for Tuesday, with a forecast high of 91 degrees and some lingering chance for showers at BWI. But that's just the starting point for steadily rising temperatures and humidity throughout the week and into the weekend.
The forecast calls for temperatures to reach 92 again Wednesday, then pop into the upper 90s to near 100 degrees Thursday and Friday before slipping back to 97 on Sunday. There's a small chance for some showers Sunday, too.
A high of 102 on Friday would break the Baltimore record for the date - 101 degrees, set in 1957.
Anyone ready for November?