A storm that will bring major disruptions of travel and daily activities to much of the nation will impact Washington, D.C., with rain, wet snow and a wintry mix Sunday night and Monday.
The storm is likely to bring at least 6 inches of snow with up to a foot possible. The local area has the potential for a heavy amount of snow and some ice if the storm turns more to the east, rather than to the north.
A south to north zone as little as 100 miles may bring a temperature difference of 50 degrees and a transition from rain and warmth to ice, snow and temperatures in the teens.
The snow may be difficult to shovel and plow due to its weight north and west of the city. There is also the potential for downed trees and power lines due to the weight of the snow and the possibility of ice.
Lengthy flight delays and many cancelations are expected well ahead of the storm, since it will move from west to east across the nation this weekend. The storm will hit portions of the Midwest with snow and ice Saturday into Sunday.
A bit of melting, wet snow and rain can fall on Sunday, ahead of the main storm.
The main storm is forecast to bring very heavy precipitation rates Sunday night and Monday. Snowfall rates can reach or surpass 2 inches per hour in some locations. Such intense snowfall can overwhelm shoveling and plowing operations, as well as strand motorists.
Motorists heading northward along I-95, I-66 and I-70 should expect very slippery conditions along much of the way with the potential for road closures in some locations.
More cold weather will follow the storm Tuesday and Wednesday.
As July draws to a close, a storm system swinging up from the Deep South will bring downpours to the northeastern U.S. and break the back of an extended heat wave.
Repeating and slow-moving storms will raise the risk of flash flooding and damaging winds over northern and central High Plains into Thursday night.
The F1 season continues this weekend with the German Grand Prix in Hockenheim with disruptive showers and thunderstorms in the forecast.
Highs will run between 10 and 15 degrees Fahrenheit above average across much of the interior western United States into the upcoming weekend.
Repeating downpours will raise the risk for flash flooding along the Gulf coast and lower Mississippi Valley through the middle days of the week.
The heat felt across the United Kingdom during the middle of July has faded and is not expected to return through at least the first week of August.
Hurricane Bertha formed 450 miles east of Jacksonville, FL. Maximum sustained winds of 75 mph with gusts to 90 mph.
Western Pacific (1990)
Typhoon Steve east of Iwo Jimo. Peak winds of 125 mph sustained gusts to 155 mph.
5-12" of rain north of Denver led to serious flash flooding (28th-29th). 108 mobile homes were destroyed and 481 others were damaged in Ft. Collins. 5 people were killed and 40 others injured.