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First Warning Forecast: Afternoon storms, Summer heat and humidity

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Posted at 4:02 AM, Aug 23, 2021
and last updated 2021-08-23 09:38:15-04

Meteorologist Myles Henderson’s First Warning Forecast

Another hot and humid week… Highs will climb to the low 90s this afternoon, about 5 degrees above normal for this time of year. With the humidity, it will feel more like the upper 90s. Expect partly cloudy skies today with a “pop-up” shower or storms this afternoon to early evening.

Highs will climb to the low and mid 90s tomorrow with an afternoon heat index to 100+. We will see partly cloudy skies again with another chance for a “pop-up” afternoon shower or storm.

Highs will remain in the low 90s for the rest of the work week. Each day the afternoon heat index will climb to near 100. Expect a mix of mostly sunny to partly cloudy skies with a smaller chance for rain.

Today: Partly Cloudy, Afternoon Storms. Highs in the low 90s. Winds: SW 5-10

Tonight: A Few Clouds. Lows in the mid 70s. Winds: SW 5-10

Tomorrow: Partly Cloudy, Afternoon Storms. Highs in the mid 90s. Winds: SW 5-10

Weather & Health

Pollen: Medium-High (Ragweed, Grasses)

UV Index: 6 (High)

Air Quality: Good (Code Green)

Mosquitoes: Extreme

Tropical Update
Tropical Depression Henri is slow-moving and will continue to bring heavy rain to southern New England and the northern Mid-Atlantic. The depression is nearly stationary at the moment but is expected to begin an eastward motion by later this morning into the afternoon hours. Maximum sustained winds are near 30 mph with higher gusts. Little change in strength is forecast during the next 48 hours.

A broad low pressure system is producing disorganized showers and thunderstorms over the eastern tropical Atlantic more than 700 miles west of the Cabo Verde Islands. Little development is expected during the next couple of days due to only marginally conducive ocean temperatures. Some gradual development is possible by the middle to latter part of the week while the system moves NW at 10 to 15 mph over the central Atlantic.
* Formation chance through 48 hours: Low (0%)
* Formation chance through 5 days: Low (30%)

A tropical wave located over the eastern Caribbean Sea is expected to form a broad area of low pressure over the southwestern Caribbean Sea by late week. Environmental conditions are forecast to become favorable for gradual development while the system moves WNW over the northwestern Caribbean Sea.
* Formation chance through 48 hours Low (0%)
* Formation chance through 5 days: Low (30%)

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