Southeast Heat Dome Expands Toward Florida, 90-Degree Highs Signal Early Taste of Summer Across the Region

FLORIDA — A strengthening upper-level ridge is expanding across the Southeast, with the core of a developing heat dome centered over Florida, where temperatures near 90 degrees are projected for Tampa, Miami, and surrounding areas late next week.

Heat Dome Building Across the Southeast

Forecast imagery shows a strengthening ridge of high pressure expanding over the southeastern United States. This feature — commonly referred to as a heat dome — traps warm air beneath it, allowing temperatures to steadily climb over several days.

Under this developing ridge, the jet stream is displaced well to the north, limiting the intrusion of cooler air masses. The Southeast, including Florida, Georgia, Alabama, and the Carolinas, will sit beneath a broad zone of sinking air, promoting sunshine and rising temperatures.

Florida Flirts With 90 Degrees

The most intense warmth is projected across the Florida Peninsula, particularly near Tampa and Miami, where temperatures are forecast to approach or exceed the 90-degree mark.

Late next week, highs across central and southern Florida may run well above seasonal averages, delivering what many residents will recognize as a true preview of summer conditions. The combination of strong March sun and persistent high pressure will enhance daytime heating, especially in inland areas away from immediate coastal cooling influences.

Jet Stream Shift Drives Pattern Change

Upper-air analysis highlights the jet stream arcing north of the Southeast, stretching across portions of the Mid-Atlantic and Ohio Valley. With the primary storm track displaced northward, the Southeast remains largely shielded from organized frontal systems…

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