This weather forecast provides a detailed overview of the unsettled weather patterns across various regions of the United States, spanning from the West to the Midwest and into the Southern Plains and Ohio Valley. Here’s a summary of the key points:
West (Southern California, Arizona, Great Basin, Southwest, Rockies):
- Continuation of unsettled weather with widespread showers and storms, especially in Southern California and Arizona.
- Risk of heavy rainfall leading to isolated instances of flooding, particularly in Southern California and the Lower Colorado River Valley.
- Snowfall expected in higher elevations, including the Sierra, Great Basin, Four Corners region, and central Rockies.
- Temperatures cooler than average in the West, with highs mainly in the 60s.
Central Plains and Southern Plains:
- Lee cyclogenesis strengthening an area of low pressure over the Central Plains.
- Widespread showers and thunderstorms expected along a frontal boundary extending from the Middle Mississippi Valley into the Southern Plains.
- Enhanced risk of severe weather in central Missouri to eastern Oklahoma, including potential for large hail, damaging winds, and tornadoes.
- Slight risk of excessive rainfall leading to flash flooding from central Missouri to northeastern Oklahoma.
- Critical risk of fire weather over the Southern High Plains due to gusty winds and dry conditions.
Midwest and Ohio Valley:
- Increasing storms along the boundary from the Middle Mississippi Valley to the Midwest/Ohio Valley.
- Slight risk of severe weather, mainly for large hail, in central Illinois to central Indiana.
- Storms expected to intensify on Monday, with a broader slight risk of severe weather extending into central/southern Illinois and Indiana.
- Potential for flash flooding, though uncertainty exists regarding the extent.
- Warmer temperatures with highs in the upper 70s to 80s, particularly in the Southern Plains and Ohio Valley.
Overall, the forecast highlights the dynamic weather patterns expected across the country, ranging from heavy rainfall and flooding in the West to severe thunderstorms and potential flash flooding in the Central and Southern Plains, along with warmer temperatures in the eastern regions.