A tropical wave off the coast of Africa is strong enough to develop into an organized tropical system, but a significant obstacle lies in its way.
That obstacle is in the form of dry and dusty air streaming across the eastern Atlantic Ocean from Africa's Sahara Desert.
Without this Saharan dust present, concern would be high for the wave to quickly strengthen into Tropical Storm Dorian.
Saharan dust is quite warm and able to rise into the upper levels of the atmosphere over the Atlantic, putting a lid on thunderstorm activity within tropical systems.
Development is not expected from the tropical wave shown moving through the eastern Caribbean.
The absence of those thunderstorms prevents tropical waves from maturing into tropical storms. Substantial dry air can also cause organized tropical storms and hurricanes to weaken.
Despite the immediate obstacle of the Saharan dust, AccuWeather.com meteorologists are not ruling out the possibility of the wave eventually strengthening.
If the wave survives its track through the Saharan dust and maintains a westward track, the window of opportunity for development could open as the wave approaches the Leeward Islands next weekend.
Less in the way of the dry and dusty air will likely be present across the central Atlantic at that time.
Unsettled weather in Atlanta will continue into this week, with the chance of thunderstorms remaining for the area through Tuesday.
After showers and thunderstorm come through the area on Monday, Detroit will see a period of slightly cooler temperatures for much of the week.
After the new week begins with stormy weather, the Cleveland area will see temperatures reminiscent of September move in midweek.
Dallas will see continued periods of heat and dry weather before severe storms bring cooler temperatures midweek.
The first part of this week will feel more like September than the middle of July, typically the hottest time of year, throughout the Midwest.
The hot weather seen across the Northwest over the weekend will carry over into the new week, continuing the risk of heat-related illness.
Mississippi Valley & Great Lakes (1936)
Searing heat across the Upper Mississippi Valley and the Great Lakes: Evansville, IN 107 degrees Alpena, MI 104 degrees Grand Rapids, MI 108 degrees St. Cloud, MN 107 degrees Wisconsin Dells, WI 114 degrees; all-time record. Green Bay, WI 104 degrees Fort Francis, ONT. 108 degrees; highest ever in Ontario Province. Mio, MI 112 degrees, all-time high in state.
The East (1975)
(13th-15th) A stationary front that extended from Maine to Florida caused 3 days of heavy rains from the Appalachians to the Atlantic Coast. River flooding in low-lying areas was reported in PA, NJ, DE, MD, VA and NC. Washington, DC and Baltimore, MD each received more than 3 inches of rain in a 24-hour period. Up to 7 inches of rain fell in 24 hours on parts of Maryland's eastern shore. Northern New Jersey was hit hardest with flash flooding. A total of 6.11 inches of rain fell on Trenton, NJ in a one-hour period. NJ was declared in a state of emergency and officials stated that as much as 34 inches of rain had fallen in the northern half of the state with property damage close to $30 million. Five people drowned.
New York City, NY (1977)
A thunderstorm north of city struck a power plant at 9:34 p.m., setting off a chain reaction and a power failure that would last into the following day. Looting resulted and a billion dollars worth of merchandise was lost.