Flash Flood Threat Shifts to Florida; Snowy in the Northern Plains; Fire Danger in the West

Showers and thunderstorms may produce flash flooding in northern and central Florida into Tuesday; and gusty winds and hail are also possible across the area Sunday. A strong cold front will bring below average temperatures and wintry precipitation to the northern High Plains. Elevated fire weather conditions are expected across parts of the Northwest and southern California.
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Jacksonville, FL Local Forecast Office

2NM S Saint Augustine FL

Marine Point Forecast

[NOTICE]

This
Afternoon
N 7kt
< 1ft
High: 67 °F
Tonight

Light Wind
< 1ft
Low: 63 °F
Monday

WNW 7kt
< 1ft
High: 71 °F
Monday
Night
Light Wind
< 1ft
Low: 61 °F
Tuesday

ENE 11kt
< 1ft
High: 71 °F
Tuesday
Night
E 6kt
< 1ft
Low: 63 °F
Wednesday

W 8kt
< 1ft
High: 79 °F
Wednesday
Night
NNW 12kt
< 1ft
Low: 55 °F
Thursday

N 14kt
< 1ft
High: 66 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:15 am EDT Apr 18, 2021
Forecast Valid: 1pm EDT Apr 18, 2021-6pm EDT Apr 24, 2021

View Nearby Observations

Detailed Forecast

Synopsis: A frontal boundary will remain just south of the local waters through Monday, then a low will track along the front on Tuesday and pass through the Northeast Florida waters. Widespread showers and embedded storms with heavy rainfall are expected through Tuesday Night. A secondary cold frontal passage is expected on Wednesday and a surge of northerly winds Wednesday Night may bring a brief period of Small Craft Advisory conditions.

.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of Apr 17, 2021 at 1200 UTC...

62 nautical miles east of Flagler Beach. 68 nautical miles east of Saint Augustine Beach. 81 nautical miles east of Jacksonville Beach. 85 nautical miles east southeast of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

This Afternoon

N wind 5 to 7 kt becoming variable and less than 5 kt. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Seas 1 ft or less.

Tonight

Variable winds 5 kt or less. Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Seas 1 ft or less.

Monday

W wind 5 to 7 kt becoming NNE in the afternoon. Showers and possibly a thunderstorm before 3pm, then a chance of showers. Some of the storms could produce heavy rainfall. Seas 1 ft or less.

Monday Night

Variable winds 5 kt or less. A chance of showers, mainly after 2am. Seas 1 ft or less.

Tuesday

Variable winds less than 5 kt becoming ENE 6 to 11 kt in the morning. Winds could gust as high as 17 kt. A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. Some of the storms could produce heavy rainfall. Seas 1 ft or less.

Tuesday Night

E wind around 6 kt becoming variable and less than 5 kt in the evening. A chance of showers, mainly before 2am. Seas 1 ft or less.

Wednesday

W wind 6 to 8 kt. A slight chance of showers before 8am. Seas 1 ft or less.

Wednesday Night

W wind 8 to 12 kt becoming NNW after midnight. Winds could gust as high as 18 kt. Mostly clear. Seas 1 ft or less.

Thursday

N wind 12 to 14 kt, with gusts as high as 21 kt. Sunny. Seas 1 ft or less.

*Notices:

This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.