Heavy Rain and Mountain Snow For the West Coast; Lake Effect Snow in the Great Lakes

A series of Pacific storms will deliver multiple rounds of heavy rain and mountain snow Wednesday into the Thanksgiving holiday weekend. There is an elevated concern for flash flooding, mudslides and debris flows near wildfire burn scars in California. A weak storm system will cross the Great Lakes Wednesday with accumulating Lake Effect snow.
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Hazardous Weather Conditions

Last Update: 419 PM EST Tue Nov 20 2018

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Miami - South Florida Local Forecast Office

36NM E South Palm Beach FL

Marine Zone Forecast


Synopsis: A chance of showers throughout the forecast period with a slight chance of thunderstorms carrying overnight Tuesday into Wednesday over the Atlantic waters. Seas will be generally 2 feet or less in the Gulf and around 2 feet, and up to 3 feet, the next few days over the Atlantic waters. Northeasterly winds will increase into the 10-15 kt range throughout the day Wednesday and continuing into Thursday. This will allow for higher seas in the Atlantic waters towards the end of the week with a northerly swell.

.GULF STREAM HAZARDS...None.

The approximate location of the west wall of the Gulf Stream as of Nov 20, 2018 at 1200 UTC...

10 nautical miles east northeast of Fowey Rocks. 12 nautical miles east of Port Everglades. 6 nautical miles east southeast of Lake Worth. 10 nautical miles east southeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

Tonight
Northwest winds 5 to 10 knots becoming north after midnight. Seas around 2 feet. Period 14 seconds becoming 3 seconds after midnight. Intracoastal waters a light chop. A chance of thunderstorms in the evening. A chance of showers through the night.
Wednesday
North winds 10 to 15 knots. Seas 2 to 3 feet. Period 4 seconds. Intracoastal waters a light chop. A slight chance of showers.
Wednesday Night
North northeast winds around 15 knots. Seas 2 to 3 feet. Period 4 seconds. Intracoastal waters a moderate chop. A chance of showers in the evening...then a slight chance of showers after midnight.
Thursday
Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Period 4 seconds. Intracoastal waters a moderate chop. A chance of showers.
Thursday Night
East northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a moderate chop. A chance of showers through the night. A slight chance of thunderstorms after midnight.
Friday
East winds 15 to 20 knots. Seas 4 to 6 feet with occasional seas to 8 feet. Intracoastal waters choppy in exposed areas. A chance of showers and a slight chance of thunderstorms.
Friday Night
East southeast winds 15 to 20 knots becoming south southeast around 10 knots in the morning. Seas 7 to 9 feet with occasional seas to 11 feet. North northeast swell 3 to 5 feet. Intracoastal waters a moderate chop. A slight chance of showers.
Saturday
Southwest winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas to 9 feet subsiding to 3 to 5 feet with occasional seas to 6 feet in the afternoon. Intracoastal waters light chop. A slight chance of showers.
Saturday Night
West winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas to 5 feet. Intracoastal waters a light chop. A chance of showers.
Sunday
West winds 5 to 10 knots. Seas 2 to 3 feet. Intracoastal waters a light chop. A chance of showers.
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ABOUT THIS FORECAST

Last Update: 419 PM EST Tue Nov 20 2018
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