Polo Isn’t a Hurricane Anymore — But Its Leftover Moisture Is Heading Straight for Us
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MEMPHIS, Tenn. (WMC) -While conditions across the Mid-South have stayed relatively quiet early this week, the broader atmospheric picture across the country is beginning to shift. Out west, the remnants of former Hurricane Polo are playing a major role in fueling widespread heavy rainfall and a flash flood threat across portions of Texas and the Southern Plains.
Even though Polo has lost its tropical characteristics and is no longer classified as a hurricane, its moisture story is far from over.
Tropical Moisture Doesn’t Disappear: It Recycles
When a tropical cyclone weakens over land or cooler waters, its organized low-level circulation breaks down—but its deep, moisture-laden airmass remains intact.
In this case, a mid-to-upper-level trough moving across the western U.S. is capturing Polo’s leftover tropical moisture plume. Instead of dissipating, that high precipitable water (PWAT) air is being pulled northeastward into a developing frontal system. That atmospheric “conveyor belt” is what has been triggering torrential downpours and localized flooding across the Southern Plains over the past few days.
What It Means for the Mid-South
As that frontal boundary and upper-level energy push eastward, that recycled tropical moisture will interact with our local atmosphere:
- Timing: Rain and thunderstorm chances return to the Mid-South starting Friday, with unsettled weather lingering through Saturday and into the weekend.
- Rainfall Totals: Widespread accumulations of 1.5 to 3 inches are currently projected across the viewing area, with locally higher totals possible under persistent, heavy downpours.
- Primary Impacts: Given the tropical origin of the moisture feed, rainfall rates could be quite efficient. Ponding on roadways, reduced visibility during commutes, and localized flooding in low-lying or poor-drainage spots will be the main concerns to monitor.
The Bottom Line
Even though Hurricane Polo is officially gone from the weather maps, its legacy will be felt hundreds of miles away right here in our backyard.
Keep an umbrella handy, stay weather-aware during outdoor weekend plans, and download the Action News 5 Weather App to track live radar, neighborhood-level rain totals, and any localized flood alerts as storms roll through.
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