Upper-level energy and a weak front will aid in producing showers and thunderstorms with heavy rain over parts of Rhode Island, Connecticut, southeastern New York, and north-central Pennsylvania.
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Therefore, the WPC has issued a Moderate Risk of excessive rainfall over parts of Southern New England/northern Mid-Atlantic through Tuesday morning.
The associated heavy rain will create numerous areas of flash flooding.
Furthermore, many streams may flood, potentially affecting larger rivers.
In addition, upper-level energy, tropical moisture, and upslope flow will aid in producing showers and thunderstorms with heavy rain over parts of North/South Carolina.
Therefore, the WPC has issued a Moderate Risk of excessive rainfall over parts of Southern Appalachians through Tuesday morning.
The associated heavy rain will create numerous areas of flash flooding.
Furthermore, many streams may flood, potentially affecting larger rivers.
Moreover, the WPC has issued a Slight Risk of excessive rainfall over parts of southern Texas through Tuesday morning.
The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable.
The threat of excessive rainfall lessens slightly on Tuesday over the East.
Therefore, the WPC has issued a Slight Risk of excessive rainfall over parts of the Southern New England/Mid-Atlantic and a second area over the Central Appalachians from Tuesday into Wednesday morning.
The associated heavy rain will create mainly localized areas of flash flooding, with urban areas, roads, and small streams the most vulnerable.
The showers and thunderstorms continue along the front from parts of the northern Mid-Atlantic to the Lower Mississippi Valley and Western Gulf Coast on Wednesday.
Therefore, the WPC has issued a Marginal Risk of excessive rainfall over parts of the northern Mid-Atlantic to the Lower Mississippi Valley and Western Gulf Coast Wednesday into Wednesday evening.
The associated heavy rain will create localized areas of flash flooding, affecting areas that experience rapid runoff with heavy rain.
Meanwhile, an upper-level ridge over parts of California/Pacific Northwest and into the Rockies will remain over the area through Wednesday.
Therefore, excessive Heat Warnings are over most of California into parts of far western Arizona/southern Nevada through Wednesday.
High temperatures will be in the 100 to mid-110 degrees in some places, with nighttime lows in the upper 80s and low 90s.
Moreover, a few locations will have record high low temperatures contributing to areas not cooling off overnight, which will also contribute to the effects of heat over parts of the region.
Additionally, Heat Advisories are over parts of northern Nevada/western Utah and southern Oregon/southern Idaho into Wednesday.
High temperatures will be in the upper-80s to upper-90s and low temperatures will be in the low-70s to mid-60s.
There is an Elevated Risk of fire weather over parts of the Northern High Plains and a second area over parts of the Northern Intermountain Region through Tuesday morning.
Likewise, there is an Elevated Risk of fire weather over parts of Northeastern California, the Pacific Northwest, and the Great Basin from Tuesday through Wednesday morning.
As a result, the fire weather threat has prompted Red Flag Warnings over parts of the region. ■
A trailing cold front in connection with a low pressure system currently moving east across the Great Lakes toward New England will bring a chance of rain into the eastern U.S. on this first day of November following an exceptionally dry October for this part of the country.