Monday Storm Brings Rain, Snow, Mudslides, and Flash Flooding to California

California and other parts of the western United States – including Sierra, Nevada – saw the first winter-like storm of the season on Monday. the storm brought heavy rain and snow and even caused a 20 car pile up due to gusts of wind bringing up dust. Five people were minorly injured.

San Francisco saw an inch of rain and other Bay Area cities had an inch or more of rain thanks to the cold front from the Pacific Northwest. Traffic accidents and power outages were widespread across the region according to ABC News. Mudslides also blocked roads close to Livermore.

Mountain areas around Lake Tahoe on the California-Nevada border reported a foot of snow. The Sierra Nevada mountain range had storm warnings for heavy snow from Kings Canyon to Yosemite that were in effect until late night hours. Areas above 9,000 feet saw 5 inches of snow by early evening, and snow levels were expected to fall to 5,000 feet.

Yolo, Lake, and Colusa counties were issued flash flood warnings according to the weather service.

The snow in Sierra could help with the drought that has hit California. California counts on snowpack to feed reservoirs. The storm also hit areas that were burned by wildfires earlier this year.

Current El Nino Already Second Strongest Ever Recorded for August

Federal meteorologists say the current El Nino is already the second strongest ever recorded for this time of year.

The officials with the National Oceanic Atmospheric Administration (NOAA) say it could be one of the “most potent weather changers” in the last 65 years.

“There is a greater than 90% chance that El Niño will continue through Northern Hemisphere winter 2015-16, and around an 85% chance it will last into early spring 2016,” the NOAA said in a statement.

However, one NOAA official is warning that it might not bring the rain needed to end the drought in California and other western states.

“A big El Nino guarantees nothing,” said Mike Halper, deputy director of NOAA’s Climate Prediction Center. “At this point there’s no cause for rejoicing that El Nino is here to save the day.”

El Nino, created when the water in the Pacific Ocean is warmer than normal, usually brings large amounts of winter rain to California and snow to the Rocky Mountain range.

California’s state climatologist, Michael Anderson, told the New York Times that California would need one and half times the normal amount of rainfall to get out of their drought conditions and he found that unlikely to take place.

“The one important element is that El Niño events are associated with large variability of outcome,” he said. And while people tend to remember years with powerful El Niño effects, he said, “People don’t associate as strongly the years when an El Niño event didn’t lead to a big outcome.”

Almost 50 Million Americans Under Tornado Threat Monday

The National Weather Service says that Monday could bring afternoons and evenings of severe weather to almost 50 million Americans.

The predictions for heavy rain, damaging winds and lightning stretches from the deep south through Wisconsin.

The storms struck some parts of the Midwest early Monday as Chicago’s O’Hare airport had to close for a short period during the morning rush hour.  Additional storms are expected through the evening at O’Hare.

Weather Channel lead forecaster Kevin Roth said “quite a few states” will be affected and that while many will not see a tornado, severe thunderstorms with damaging winds could be a distinct possibility.

Straight-line wind damage was seen in Belleville, Wisconsin where a home weather station reported a 74 m.p.h. gust.  At least one roof was taken off a home in that town.  WE Energies reported 30,000 customers without power in the region.

All weather experts reviewed for this story urge anyone who receives a weather warning tonight or tomorrow to seek shelter immediately as the storms are very dangerous.

Storm Death Toll Reaches 19; Dam Break Less Likely

Rains continue to fall across Texas, increasing the massive flood from major weekend storms that have left 19 people confirmed dead.

Meanwhile, engineers believe a dam on the verge of collapse because of the rising waters will be able to hold after pumping out lake water to ease pressure.  A re-evaluation found the dam more stable than believed.

“The previous reports of an imminent breech have now been… we’re standing down basically,” said Captain John Spann with the Midlothian Police Department.

A dam collapse would flood Highway 287 and likely destroy 25 homes according to local officials.

Two more bodies were found in Houston on Wednesday which raised the official death toll to 19.

The flooding in Houston continues to cause major problems.  A waste treatment plant in the city was overrun by flood waters, sending 100,000 gallons of wastewater into the flood water.  Over 700 homes have sustained some kind of damage from the rushing water.

Firefighters have reported over 500 water rescues and over 2,500 stranded vehicles.

Meanwhile, eight people in a family whose vacation home was swept away by the flood waters remain missing.  Local residents say the authorities were neglectful in their alerting residents to the problem of the Blanco river.

“Nobody was saying, ‘Get out; get out; get out,'” said Brenda Morton of Wimberley, who lives three houses down from the home that was swept away. “We’re pretty trained, so we were calculating. We knew the flood plain. People who were visiting or had summer homes, you have company from out of town, you don’t know. You don’t know when that instant is.”

Hays County Emergency Management says phone calls went out to residents and that in some areas law enforcement officers made direct notifications.

“Milky Rain” Across Pacific Northwest

Scientists across the Pacific Northwest are investigating a rain that left a residue on cars in two states.

The “milky rain” fell on both Oregon and Washington states, leaving a powdery resident on vehicles and buildings.  Samples have been collected by the Pacific Northwest National Laboratory and the Benton Clean Air Agency in an attempt to discover what was in the rain.

So far the scientists have competing theories.  One is that a volcanic eruption in Japan has resulted in volcanic ash mixing with clouds to create the rain.  The other is that dust from central Oregon somehow mixed with a storm.

The National Weather Service has taken a mostly impartial view, stating dust storms were the likely cause but it could not rule out volcanic ash.  The NWS says they do not have the equipment necessary to analyze the rain and discover its origin.

Robin Priddy of Benton Clean Air says that air monitoring stations detected nothing during the rain but that they don’t feel it poses a health risk.

“We don’t have any reason to think there’s anything wrong, but there’s no reason not to be cautious if you’re concerned,” she added. “You may want to wash it off your car with water, rather than with your hands, and avoid touching it and breathing it in.”