Back-to-Back Pacific Storms to Impact the West Coast; Heavy Snow in the Central Appalachians

Back-to-back powerful Pacific storm systems to impact the Pacific Northwest and northern California through the end of this week with heavy rain, flooding, strong winds, and higher elevation mountain snow. A strong, long-duration atmospheric river will accompany the Pacific storms, bringing excessive rainfall and flash flooding to southwest Oregon and northwest California through the week. Read More >

Interactive Hazard Map and Regional Radar

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Winter Headlines

Briefings

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Rapid City

Aberdeen

Sioux Falls

Winter Reports

Interactive Snowfall Map

Public Information Statements: Rapid City | Aberdeen | Sioux Falls

River Flooding

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Precipitation Forecast

Liquid Precipitation

Snowfall

Ice

**1-Day Ice Forecast** *Click for bigger image*

**2-Day Liquid Precipitation Forecast** *Click for bigger image*

**2-Day Snowfall Forecast** *Click for bigger image*

**2-Day Ice Forecast** *Click for bigger image*

**3-Day Liquid Precipitation Forecast** *Click for bigger image*

**3-Day Snowfall Forecast** *Click for bigger image*

**3-Day Ice Forecast** *Click for bigger image*

Range of 3-Day Snowfall Possibilities

**Expect at least this much snow** *Click for bigger image*

**Official snowfall forecast** *Click for bigger image*

**Be prepared for this much snow** *Click for bigger image*

Probability of Snow Amounts

**Probability of 6 Inches** *Click for bigger image*

**Probability of 8 Inches** *Click for bigger image*

**Probability of 12 Inches** *Click for bigger image*

Winter Storm Severity Index

Winter Storm Severity Index Web Page

WSSI Fact Sheet

Maximum Wind Gusts

Additional Weather Elements

(mouse over day or period to see map below)

Max Temperature	Day 1		Day 2		Day 3		Day 4		Day 5
Min Temperature	Day 1		Day 2		Day 3		Day 4		Day 5
Min Rel Humidity	Day 1		Day 2		Day 3		Day 4		Day 5
Wind Chill	Period 1	Period 2	Period 3	Period 4	Period 5	Period 6	Period 7	Period 8	Period 9
Max Wind Gust	Period 1	Period 2	Period 3	Period 4	Period 5	Period 6	Period 7	Period 8	Period 9
Chance of Precip	Period 1	Period 2	Period 3	Period 4	Period 5	Period 6	Period 7	Period 8	Period 9