Summary:
A massive storm system will impact the Central and Southern U.S. over the next few days. Widespread heavy snow with blizzard conditions and a zone of wintry mix is possible from the north-central High Plains to the Upper Midwest. Meanwhile, in the warm sector of the storm, a severe weather event with all hazards is possible in the southern Plains and Lower Mississippi Valley to Florida. Impacted Lanes: I-90, I-94, I-80, I-76, I-15, I-335, I-70, I-44, I-29
South Dakota
Blizzard Warning remains in effect until 5 AM MST Thursday Morning
- Blizzard conditions. Total snow accumulations of 8 to 22 inches, highest amounts generally across southern portions of Fall River and Oglala Lakota counties. Heaviest snowfall will generally be today and tonight. Winds gusting as high as 50 mph.
- Impacts: Travel could be very difficult to impossible. Widespread blowing snow could significantly reduce visibility. Gusty winds could bring down tree branches.
Ice Storm Warning remains in effect until 6 PM CST this evening
- Significant icing. Ice accumulations of up to one quarter of an inch.
- Impacts: Power outages and tree damage are likely due to the ice. Travel could be nearly impossible.
Winter Storm Warning remains in effect until 6 AM CST Thursday morning
- Heavy mixed precipitation expected. Total snow accumulations of 5 to 9 inches and ice accumulations of up to one tenth of an inch. Winds gusting as high as 40 mph.
- Impacts: Power outages and tree damage are likely due to the ice. Travel could be nearly impossible. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute.
Winter Weather Advisory remains in effect until 6 PM CST Thursday evening
- Mixed precipitation expected. Total snow accumulations of 4 to 6 inches and ice accumulations of a light glaze. Northwest winds gusting as high as 40 mph, causing areas of blowing snow. This will be a long duration event. Freezing drizzle may mix with snow at times tonight and Wednesday, before changing to all snow Wednesday night. Winds will increase Wednesday afternoon producing areas of blowing snow.
- Impacts: Travel could be very difficult. Patchy blowing snow could significantly reduce visibility. The hazardous conditions could impact the morning or evening commute.
Kansas
High Wind Warning remains in effect until 6 PM CST Wednesday evening
- Northwest winds at 35 to 45 mph with gusts up to 65 mph expected.
- Impacts: High winds may move loose debris, damage property and cause power outages. Travel will be difficult, especially for high profile vehicles.
Wind Advisory remains in effect until 6 PM CST this evening
- Southwest winds 20 to 30 mph with gusts up to 50 mph expected.
- Impacts: Gusty winds could blow around unsecured objects. Tree limbs could be blown down and a few power outages may result. Travel could be difficult, especially for high profile vehicles.
Louisiana
Flood Advisory remains in effect until 2 PM CST Wednesday afternoon
- Flash flooding caused by excessive rainfall continues to be possible.
- Impacts: Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. There is a chance of excessive, heavy rain from late Tuesday through Wednesday afternoon. This may produce areas of flash flooding, especially in urban areas and roadways.
Pennsylvania
Winter Strom Watch remains in effect until Friday morning
- Heavy mixed precipitation possible. Total snow accumulations of up to 4 inches and ice accumulations of one tenth to three tenths of an inch possible. Winds could gust as high as 40 mph on the ridgetops to the west of I-99.
- Impacts: Significant travel disruptions are possible. Power outages and tree damage may occur due to the ice. The hazardous travel conditions will likely impact the Thursday morning and evening commute.
Additional Blizzard Warnings include but are not limited to: Montana, Wyoming, Colorado, and Nebraska
Additional Ice Storm Warnings include but are not limited to: Minnesota and Iowa
Additional Winter Storm Warnings include but are not limited to: Montana, Wyoming, Utah, Colorado, North Dakota, Nebraska, Minnesota, and Wisconsin
Additional Winter Weather Advisories include but are are not limited to: Montana, Wyoming, Utah, Colorado, Nebraska, Minnesota, Iowa, and Wisconsin
Additional High Wind Warnings include but are not limited to: New Mexico and Colorado
Additional Wind Advisories include but are not limited to: New Mexico, Texas, Oklahoma, Arkansas, Missouri, Iowa, and Illinois
Additional Flood Advisories include but are not limited to: Mississippi
Additional Winter Storm Watches include but are not limited to: West Virginia and Virginia
