BALTIMORE (WJZ) — A Code Orange air quality alert is in effect Tuesday.
A warm front passing north of the state has created a huge cluster of rain and thunderstorms over PA. They are breaking up as they move south, but we could get a spotty shower or thunderstorm east of the mountains in Maryland, while there will be rain and some thunderstorms in far western Maryland. Otherwise, clouds are overspreading a lot of the state. This warm front is going to introduce a new round of very hot and muggy weather starting Wednesday.
Highs will climb close to 90 degrees Tuesday afternoon, while the dewpoints/humidity will remain in check. However, Wednesday, highs will jump to the upper 90s and possibly break the current record of 97 degrees. When you factor in the higher dewpoints/humidity, it will feel more like the low 100s. The air quality alerts will likely be extended over the next few days, and heat advisories or even warnings could be issued as this heat continues.
Wednesday and Thursday will be the peak days for heat with highs in the upper 90s. Then, a new cold front will limp our way. There could be a late-day thunderstorm on Thursday as the front gets closer, but then it’s going to stall out over the Mid-Atlantic right into the weekend. It will meander around, and there will be daily differences, but scattered showers and thunderstorms are possible as long as it stays close to us. While this is happening, temperatures will gradually drop back down to the 80s even though the dewpoints/humidity will keep it very muggy.
We are also monitoring an area of disturbed weather in the Caribbean that could develop into something more organized. This area will eventually drift north into the Gulf or in the vicinity of Florida.