Snow, Blowing Snow, and Dangerous Wind Chills from the North Plains to the Northeast

A powerful storm system will moving northeast and offshore later Sunday. An upper level low will continue producing snow and blowing snow from the Upper Midwest to the Northeast, especially, downwind of the Great Lakes. Bitterly cold air will plunge into the Plains following this system, with wind chills as cold as -40 degrees.
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Coastal Waters Forecast for Coastal Waters OF Southwestern Puerto Rico out 10 NM (AMZ745) (Text-Only)
NWS Forecast for: Coastal Waters OF Southwestern Puerto Rico out 10 NM (AMZ745)
Issued by: National Weather Service San Juan, PR
Last Update: 918 PM AST Sat Jan 18 2020
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Rest Of Tonight: East winds 15 to 20 knots. Seas 8 to 10 feet with occasional seas up to 11 feet. Dominant period 13 seconds. Northwest swell 4 to 8 feet.

Sunday: East winds 15 to 20 knots. Seas 10 to 12 feet with occasional seas up to 15 feet. Dominant period 13 seconds. North swell 6 to 11 feet.

Sunday Night: East winds 10 to 15 knots. Seas 10 to 12 feet with occasional seas up to 14 feet. Dominant period 13 seconds. North swell 5 to 10 feet. Isolated showers.

Monday: Southeast winds 10 to 15 knots. Seas 8 to 10 feet with occasional seas up to 13 feet. Dominant period 14 seconds. Northwest swell 4 to 8 feet. Scattered showers.

Monday Night: East winds 10 to 15 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 13 seconds. Northwest swell 4 to 7 feet. Isolated showers.

Tuesday: Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Southwest swell 4 to 5 feet. Isolated showers.

Wednesday: Southeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 10 seconds. Isolated showers.

Thursday: North winds 15 to 20 knots. Seas 2 feet or less. Dominant period 8 seconds. Isolated showers.



Zone Forecast: Coastal Waters OF Southwestern Puerto Rico out 10 NM (AMZ745)

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