Yet another push of cooler and less humid air will settle into the Philadelphia area prior to the weekend.
While Bertha will still generate some rough surf and the risk of locally strong rip currents into Thursday along the Atlantic coast, the system was losing tropical characteristics.
Spanning Thursday through Sunday, each day will bring at least partial sunshine, cooler-than-average air and lower-than-average humidity levels for early August. Typical highs this time of the year are around 87 F.
A system is forecast to spread some rain and thunder across the Ohio Valley and southern part of the mid-Atlantic this weekend. There is a chance that rain could move into and overwhelm the dry air around southeastern Pennsylvania, New Jersey and northern Delaware if this system travels farther to the north than now expected.
It is possible for thickening cloud cover either to hold temperatures back either day. If either day ends up being cloudy, temperatures may be no higher than the middle 70s.
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A tropical disturbance will sweep across Florida and the Bahamas with enhanced downpours and rough surf into the middle of the week.
On Monday, Aug. 21, the event that millions have anticipated will unfold when the moon passes directly in front of the sun.
Tropical Rainstorm Harvey will continue to track toward Central America with heavy rainfall, gusty thunderstorms and dangerous seas early this week. Harvey could regenerate over the next several days.
Heat and humidity surging from the Great Lakes and Ohio Valley into the Northeast will be the key ingredients for severe weather to develop Tuesday and Tuesday night.
A bout of locally heavy rain will impact northern and western areas of the United Kingdom Sunday night into Tuesday as moisture from Gert crosses the British Isles.
The government of Portugal has issued a state of public calamity as wildfires continue to burn across the country ahead of a weekend heat wave.
In addition to Harvey, two additional tropical features are being monitored in the Atlantic basin but rapid development is unlikely at this time.
A renewed threat for severe weather and flooding will emerge over the midwestern United States into Monday night.