Pineapple Express: Next Stop, the Delta

An impressive storm system has barreled onshore across the West and it will continue to dive southeast across the country early this week.

The National Weather Service has already issued flash flood watches from southeast Oklahoma and southwest Arkansas to eastern Texas and western Louisiana. A “cutoff” low sits and spins over Mexico and Texas, keeping a stream of moisture pointed at the south-central states. Periods of showers and thunderstorms will take aim over a broad area from Texas and Oklahoma, eastward to the Mississippi River and Tennessee Valley.

Rainfall totals through Friday in the Delta are expected to be in the three to five inch range with isolated amounts of up to eight inches over portions of southeastern Arkansas.

The heaviest rain targets parts of East Texas into southeastern Oklahoma, Arkansas, southern Missouri and Louisiana.
Persistent bands of rain and thunderstorms may ultimately drop a foot of rain in some of these areas. Isolated strong to severe thunderstorms cannot be ruled out, particularly near the western to central Gulf Coast.

By midweek, a massive, slow-moving, southward dip in the jet stream will inch east across Mexico, then near the Gulf Coast, funneling deep, tropical moisture into parts of the South and Mississippi Valley, a rather unusual pattern for early March.

These ingredients will come together for several bouts of thunderstorms and excessive rainfall from the Plains into the Mississippi Valley and surrounding areas over the next several days

It appears that the upper level low will begin to finally pull away from the southern Plains this weekend, gradually lessening the threat for severe thunderstorms and flooding.

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