Summary:
Two storms are expected to impact both the West and the East Coasts simultaneously over the next couple of days beginning late Monday. Another atmospheric river will bring a moderate risk of flash flooding and heavy mountain snow over parts of California. A nor'easter will produce heavy wet snow inland, high winds with rain/snow near the coast, and coastal flooding. Impacted Lanes: I-90, I-86, I-390, I-81, I-5, I-84, I-86, I-15, I-80, I-43, I-69, I-75, I-271, I-77, I-76, I-87, I-91
Montana
High Wind Warning remains in effect until 12 PM MDT Tuesday afternoon
- South winds 30 to 40 mph with gusts up to 65 mph expected.
- Impacts: High winds may move loose debris, damage property and cause power outages. Travel could be difficult, especially for high profile vehicles. Reduced visibility due to blowing snow and partial lane blockages is also possible.
Winter Weather Advisory remains in effect until 9 AM MDT Tuesday morning
- Snow expected. Total snow accumulations of 3 to 5 inches. Winds gusting as high as 40 mph.
- Impacts: Plan on slippery road conditions. A period of heavy snow with snowfall rates of 1 to 2 inches per hours is expected between 2am and 6am, bringing low visibility.
Wind Advisory remains in effect until 12 PM MDT Tuesday afternoon
- Southwest winds gusting up to 60 mph expected.
- Impacts: Strong crosswinds will make travel difficult along Interstate 90 from Livingston to near Big Timber and roads along the Beartooth Foothills.
New York
Coastal Flood Advisory remains in effect until 7 AM EDT Tuesday morning
- Up to 1 1/2 feet of inundation above ground level expected in vulnerable areas near the waterfront and shoreline.
- Impacts: Minor flooding is expected in the most vulnerable locations near the waterfront and shoreline. Expect up to 1 1/2 feet of inundation above ground level in low lying, vulnerable areas with the late tonight/early tomorrow AM high tide. Some roads and low lying property including parking lots, parks, lawns and homes/businesses with basements near the waterfront will experience shallow flooding.
Winter Storm Warning remains in effect until 8 AM EDT Wednesday morning
- Heavy, wet snow expected. Total snow accumulations of 10 to 15 inches.
- Impacts: Travel could be very difficult. The weight of the heavy wet snow on tree branches will likely result in power outages. Snowfall rates in excess of 1 inch per hour are possible.
Winter Weather Advisory remains in effect until 8 AM EDT Wednesday morning
- Snow expected. Total snow accumulations of 4 to 7 inches. Winds gusting as high as 40 mph Tuesday.
- Impacts: Plan on slippery road conditions. The hazardous conditions could impact the morning or evening commute.
Nevada
Flood Advisory remains in effect until 7 PM PDT Wednesday evening
- Flooding caused by rain and snowmelt is possible.
- Impacts: Excessive runoff may result in flooding of rivers, creeks, streams and other low-lying and poor drainage areas. Flooding may occur in mountain urban areas due to deep snow confining flow and restricting drainage. Runoff exceeding drainage capacity is expected to impact roads, agricultural areas, and poor drainage areas.
High Wind Warning remains in effect until 7 PM PDT Tuesday evening
- South winds 20 to 30 mph with gusts up to 55 mph possible.
- Impacts: Strong winds could blow down trees and power lines. Power outages are possible. Travel could be difficult, especially for high profile vehicles.
Additional High Wind Warnings include but are not limited to: California and Wyoming
Additional Winter Storm Warnings include but are not limited to: Washington, California, Idaho, Utah, Wisconsin, Pennsylvania, New Jersey, Connecticut, Rhode Island, Massachusetts, Vermont, New Hampshire and Maine
Additional Winter Weather Advisories include but are not limited to: Washington, Oregon, Idaho, Wisconsin, Michigan, West Virginia, Pennsylvania, Connecticut, Rhode Island, and Vermont
Additional Wind Advisories include but are not limited to: Oregon and California
Additional Coastal Flood Advisories include but are not limited to: Virginia and Maryland
Additional Flood Advisories include but are not limited to: Oregon, California, Illinois, Missouri, Arkansas and Mississippi
