While the week started on a dry note, a slow-moving storm has the potential to unload several inches of rain on the Philadelphia area through midweek.
The same storm responsible for severe weather and tornadoes over the Central and Southern states will send periods of rain through the mid-Atlantic and into the Northeast.
While the rain will alleviate brushfire conditions, it can bring problems on the other end of the spectrum, such as travel delays from flash and urban flooding, as well as poor visibility.
The rain postponed Phillies/Mets baseball at Citizen's Bank Park Wednesday evening.
During Thursday, the flow will become more west to southwesterly. From this direction, the chilly flow from the Atlantic Ocean will be turned off. However, eventually cooler air from the Midwest will filter east of the Appalachians this weekend.
The reversal of the winds will not end the chance of rain. The pattern could allow spotty heavy, gusty thunderstorms to come calling on Thursday.
Spotty showers from the ancient storm over the Midwest will settle over the region this weekend.
Tropical Depression Two has formed in the Atlantic and could become the next tropical storm of the season by midweek.
Warm and humid air in place over much of the Midwest and Northeast at midweek will contribute to the risk of drenching, gusty and locally severe thunderstorms on Wednesday.
After temperatures briefly climb to typical midsummer levels, another cooldown will roll into the Midwest and expand to the East for the last part of July.
Severe storms will fire up Tuesday afternoon and evening, threatening outdoor activities and travel for many.
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Unseasonable warmth is expected to continue from the United Kingdom through northern Europe and Scandinavia into the weekend.
Atlantic Ocean (1498)
Christopher Columbus' third voyage. After leaving the Cape Verde Islands, the 4 ships drifted WSW in the equatorial current. "The wind stopped so suddenly and unexpectedly and the supervening heat was so excessive and immoderate that there was no one who dared go below after the casks of wine and water which burst, snapping the hoops of the pipes; the wheat burned like fire; the bacon and salted meat roasted and petrified."
Wasatch National Park, UT (1918)
504 sheep were killed by one lightning bolt.
Waterbury, CT (1926)
105 degrees -- record high for state.