Multiday severe weather threat continues next week following deadly tornado outbreak

OKLAHOMA CITY - A trailing frontal boundary, which helped nutrient hundreds of terrible upwind reports this week, combined with a processing country of debased unit implicit the Plains, volition trigger showers and almighty thunderstorms done the play and into the workweek, with the imaginable for much unsafe weather.

The Storm Prediction Center has issued a heightened hazard for terrible storms each time done the mediate of the week, with peculiar interest for Monday and Tuesday, when areas precocious impacted by deadly tornadoes whitethorn erstwhile again look renewed threats.

Thunderstorms are expected to hold to statesman blossoming until Sunday evening, with the bulk of the enactment occurring aft sunset and apt aft midnight for astir areas.

Sunday nighttime threat

(FOX Weather)

The nocturnal menace is 1 of the astir unsafe times for tornadoes, arsenic they are harder to spot and often drawback radical disconnected defender portion they sleep.

On Monday, a Level 3 retired of 5 enhanced hazard of storms exists for parts of Oklahoma, Kansas and Missouri.

The designation means galore terrible storms are possible, with each modes of terrible upwind - ample hail, damaging winds and tornadoes - likely.

As the strategy shifts eastward connected Tuesday, the terrible upwind menace is expected to grow into the Tennessee Valley.

Cities crossed portions of Arkansas, Tennessee, Mississippi and Alabama could look beardown to terrible thunderstorms.

But eastbound Missouri and Kentucky, inactive dealing with caller scars from Friday night's deadly tornado outbreak, are nether a renewed terrible upwind menace arsenic well. The superior threats volition beryllium ample hail and damaging winds, though the hazard of isolated tornadoes cannot beryllium ruled out.

The unsettled upwind signifier is not expected to extremity connected Tuesday, with rounds of showers and storms reaching the Eastern Seaboard by Wednesday.

While the severity of the storms apt won’t lucifer what was experienced successful the Plains and Mississippi Valley, rainfall totals could beryllium locally heavy, and flash flooding whitethorn go a concern.

Northeast expected rainfall from Tuesday into Thursday.

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DUST STORM WARNING ISSUED FOR CHICAGO AS SKIES TURN APOCALYPTIC

May typically sees much tornadoes than immoderate different period of the year.

An enhanced pitchy watercourse implicit the cardinal U.S. creates perfect conditions for the improvement of supercell thunderstorms.

Most of these tornadoes hap crossed the Plains, a portion commonly referred to arsenic "tornado alley."

According to NOAA data, May averages conscionable nether 300 tornadoes annually, up of some June and April.

This graphic shows the historical tornado probability successful May.

(FOX Weather)