One person is dead after heavy thunderstorms triggered flash flooding across the Southwest on Friday. A similar danger exists today.
Roads and washes flooded and mudslides ensued across parts of southeastern California and western Arizona on Friday from the drenching thunderstorms.
A person drowned after a car got swept into a flooded wash (normally a stream bed) five miles north of Lake Havasu City, Ariz., late Friday.
Around the same time, runoff from a downpour led to significant flooding on California's Highway 62 from Yucca Valley to east of Twentynine Palms. Water and boulders covered the road, parts of which caved in. Numerous vehicles got stuck in the debris.
The combination of a slow-moving weather disturbance and monsoonal moisture is to blame for Friday's heavy thunderstorms, while the region's typical dry climate contributed to the flash flooding's rapid onset.
Yuma, Ariz., picked up 1.66 inches of rain on Friday--equivalent to half of what the city normally receives during an entire year. It was also Yuma's wettest day since January 21, 2010.
Simply put, the soil across southeastern California and western Arizona cannot handle that amount of rain.
The same ingredients that led to Friday's flash flooding are once again in place through this evening across the Southwest with southern Nevada, southwestern Utah and western Arizona at greatest risk.
Las Vegas lies within the threat zone, as well as Kingman, Ariz., and St. George, Utah.
Thunderstorms will rumble elsewhere throughout the Intermountain West today with the flood threat more localized. Severe weather is also a concern this afternoon across northeastern Oregon and neighboring Idaho.
The weekend is then set to end Sunday just as it started with more thunderstorms throughout the Intermountain West. The danger of flash flooding will be greatest across Arizona.
While prospects for a white Christmas are grim along the I-95 corridor, many communities from the Great Lakes to the Rockies should be able enjoy a snowy scene for the holiday.
People who are dreaming of a white Christmas across the interior Northwest may see their dreams come true this year as another storm impacts the region.
While snow falling around the Christmas holiday may create an ideal setting for celebrations, massive storms that have slammed parts of the country in the last decade have created mass chaos.
Rain and thunderstorms, some capable of producing severe weather, will affect much of the South from Tuesday into Christmas Eve.
Several fast-moving storm systems will bring windy and wet weather to the British Isles and northern Europe.
A storm bearing gusty winds, heavy snow, torrential rain, thunderstorms and fog will converge on the East and Midwest on Christmas Eve and will likely create ground and flight delays.
New Orleans, LA (1989)
1" of snow.
Chicago, IL (1993)
Only 0.2" of snow to this point in the season an all time low for so late in the season.
Marquette, MI (2000)
113.3" of snow to this point in the season.