Tropical Cyclone Nicole will move over the Florida Peninsula early Thursday morning and across the peninsula before moving northward into the Mid-Atlantic by Friday.
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The storm will produce heavy rain, strong wind, severe weather, and storm surge overnight Wednesday into Thursday.
Nicole will produce heavy rainfall Wednesday into Thursday across the Florida Peninsula.
As a result, flash and urban flooding will be possible across portions of the Florida Peninsula, along with renewed river rises on the St. Johns River.
Isolated flash, urban, and small stream flooding will also be possible on Friday in the Southeast through the Southern and Central Appalachians, including the Blue Ridge Mountains, and extending northward through west central Pennsylvania into western New York by Friday night.
Due to the threat of severe weather, the SPC has issued a Slight Risk of severe thunderstorms over parts of the Florida peninsula through Thursday morning.
The hazards associated with these thunderstorms are some lightning, severe thunderstorm wind gusts, a few tornadoes, and a minimal threat of hail.
Furthermore, due to the heavy rain associated with NICOLE, the WPC has issued a Slight Risk of excessive rainfall over the peninsula through Thursday morning.
The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable.
On Thursday, as NICOLE moves northward, the threat of severe weather and excessive rainfall moves northward.
Therefore, the SPC has issued a Slight Risk of severe thunderstorms from parts of northeastern Florida northward into the Carolina Coast from Thursday into Friday morning.
The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, a few tornadoes, and a minimal threat of hail.
Additionally, the WPC has issued a Slight Risk of excessive rainfall over northeastern north-central Florida, southern Georgia, and coastal South Carolina from Thursday to Friday morning.
The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable.
On Friday, the threat of severe weather and excessive rainfall moves farther northward.
The severe weather threat will be over the Carolina Coast and the excessive rainfall threat will extend from the Southern Appalachians into the Lower Great Lakes/Northeast.
Meanwhile, heavy snow will develop over the Northern Plains from overnight Wednesday into Thursday.
Slightly lighter amounts of snow will fall over the region on Thursday night into Friday morning.
A winter storm is expected to bring heavy snow, as well as sleet and freezing rain, to portions of the Northern High Plains, Great Plains, and Upper Mississippi River Valley through Friday.
Heavy snowfall rates of 1-2 inches per hour are possible tonight through Thursday from the Dakotas eastward into northwestern Minnesota.
Total snowfall will likely exceed 12" in some areas.
Blizzard conditions are possible across portions of the central Dakotas due to the strong winds and reduced visibility.
Travel may become dangerous in some areas and scattered power outages are possible.
Freezing rain and sleet are likely to the south of the heaviest snow.
Icing may be significant.
Freezing rain and sleet may produce hazardous travel, disruptions to infrastructure, and scattered power outages.
Strong northeasterly winds over western Lake Superior may lead to hazardous waves. ■
A Fall heatwave will continue into the weekend over portions of the Desert Southwest and central/southern California as a persistent trend of upper-ridging over the region remains in place.