Thanks to a round of "Indian Summer" in the South, parts of the Midwest and East, coupled with a powerhouse jet stream, the threat of severe weather has returned in time to round out the month of October.
The jet stream – the band of winds some 30,000 feet aloft that influences large-scale weather patterns – has plunged southward across the western states the last few days and is now headed for the nation's midsection. Meanwhile, southerly winds have imported moist air from the Gulf of Mexico northward into the southern Plains, Lower Mississippi Valley, and eventually will do so in parts of the Ohio Valley and East.
Let's break down the day-by-day severe weather forecast.
Wednesday's Outlook
Thursday's Outlook
(LIVE: Radar, Watches and Warnings)
Wednesday, the greatest chance for severe thunderstorms will be from eastern Kansas and western Missouri to Texas. Damaging wind gusts, hail and isolated tornadoes will be possible in this corridor.
This severe storm threat Wednesday includes theDallas/Ft. Worth Metroplex, and Tulsa, Okla., among other locations.
In addition, heavy rainfall could contribute to flash flooding, particularly in southeast Oklahoma, northeast Texas, southwest Arkansas and northwest Louisiana.
(MAP: Rainfall Forecast)
Thursday, the corridor we are watching is from the Ohio Valley to the lower Mississippi Valley and western Gulf Coast. Once again, damaging wind gusts, isolated tornadoes and torrential rainfall are all concerns. The greatest threat for severe weather will be from southern Indiana to northern Mississippi.
Louisville, Ky., Nashville, Tenn., and Houston are some of the cities that could see severe storms on Halloween.
If you have outdoor plans for Halloween, be alert of any potential for severe weather in your area.
In addition, a threat for damaging straight-line winds, possibly not associated with thunderstorms, exists overnight Thursday night from the eastern Great Lakes and Appalachians into the upper Ohio Valley. Some downed trees or limbs, and power outages are possible in these areas. High wind watches have already been posted for parts of western and central New York.
Friday, some severe storms may continue along the southern end of the front in the Southeast. Farther north, a band of heavy rain moving through the Northeast could also contain strong wind gusts with little or no lightning.
This is particularly the case Friday morning over southern New England and the eastern Great Lakes, possibly including New York City, Boston and Buffalo. Again, power outages, downed trees, limbs and powerlines are possible in these areas.
We will continue to update this situation on this page as it unfolds. You can find the initial day-by-day details by checking out our TOR:CON analysis from Dr. Greg Forbes.
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