A Storm Expected To Impact The Central U.S.

A storm system will emerge from the Rockies and impact the Central U.S. through midweek. A swath of heavy snow is expected from the Central Rockies to the Upper Mississippi Valley and Great Lakes. Locally heavy rain with a marginal chance for excessive rainfall will be possible from the Lower Mississippi Valley to the South. The system will then shift into the East to produce a number of hazards.
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Hazardous Weather Conditions

Last Update: 345 AM EST Tue Jan 22 2019

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Miami - South Florida Local Forecast Office

4NM WSW Marco Island FL

Marine Zone Forecast


...SMALL CRAFT SHOULD EXERCISE CAUTION...
Synopsis: Building high pressure to the north is forecast to bring increasing wind out of the east today. The wind across the Atlantic waters is forecast between 20 and 25 kts, with seas building to 7 to 9 feet in the Gulf Stream, especially off the Palm Beach Coast by late this afternoon. A fresh to strong breeze to forecast to continue through most of the week, turning to the southeast Wednesday and to the South by Thursday morning. A cold front is forecast to move through the area on Thursday, bringing a high chance of showers and possibly some thunderstorms. There is a small craft advisory in effect for the Atlantic waters from this morning, through Thursday afternoon, as marine conditions will be hazardous for small craft. Conditions may also become hazardous for small craft on the remaining waters of South Florida, where small craft should exercise caution.

.GULF STREAM HAZARDS...An east wind of 20 to 25 kts with gusts to 30 kts possible, with seas building to 7 to 9 feet through Thursday.

THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM IS CURRENTLY UNAVAILABLE.

Today
East winds 15 to 20 knots. Seas 2 to 3 feet. Period 3 seconds. Bay and inland waters a moderate chop.
Tonight
East southeast winds 15 to 20 knots. Seas 2 to 3 feet. Period 4 seconds. Bay and inland waters a moderate chop.
Wednesday
Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Period 4 seconds. Bay and inland waters a light chop.
Wednesday Night
South southeast winds 10 to 15 knots. Seas 2 to 3 feet. Period 4 seconds. Bay and inland waters a light chop. A slight chance of showers in the evening...then a chance of showers and thunderstorms after midnight.
Thursday
Southwest winds 10 to 15 knots becoming west northwest in the afternoon. Seas 2 to 3 feet. Bay and inland waters a light chop. Showers likely and a chance of thunderstorms.
Thursday Night And Friday
North winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Bay and inland waters a light chop. A chance of showers.
Friday Night
North northeast winds 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a light chop. A slight chance of showers.
Saturday
Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Bay and inland waters a light chop. A chance of showers.
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ABOUT THIS FORECAST

Last Update: 345 AM EST Tue Jan 22 2019
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