Excessive Heat Continues for the Pacific Northwest; Flooding Impacts Expected in the Southwest U.S.

A dangerous heat wave persists for the Northwest into portions of California today with excessive heat warnings and heat advisories in effect. The active monsoon pattern with organized showers and thunderstorms and possible flash flooding with debris flows continues and will become enhanced in the Southwestern U.S. through Saturday.
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Hazardous Weather Conditions

Hazardous Weather Outlook

For More Weather Information:

Miami - South Florida Local Forecast Office

4NM WSW Biscayne Bay FL

Marine Point Forecast

[NOTICE]

This
Afternoon
S 13kt
High: 88 °F
Tonight

SSW 8kt
Low: 83 °F
Friday

ESE 9kt
High: 87 °F
Friday
Night
E 9kt
Low: 83 °F
Saturday

ESE 10kt
High: 87 °F
Saturday
Night
E 11kt
Low: 84 °F
Sunday

E 12kt
High: 87 °F
Sunday
Night
E 11kt
Low: 84 °F
Monday

E 11kt
High: 87 °F

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:40 pm EDT Aug 18, 2022
Forecast Valid: 3pm EDT Aug 18, 2022-6pm EDT Aug 24, 2022

View Nearby Observations

Detailed Forecast

Synopsis: A frontal boundary near the Florida/Georgia border will remain nearly stationary through tonight as high pressure stays south of the region. The front will then begin to move north on Friday as a ridge of high pressure moves over the local waters, and eventually across Central and North Florida this coming weekend. Southwest to west winds will become east to southeast and slightly increase by the weekend.

Gulf Stream Hazards...Locally elevated winds and/or seas near thunderstorms.

The approximate location of the west wall of the Gulf Stream as of Aug 18, 2022 at 12 UTC...

12 nautical miles east southeast of Lake Worth. 13 nautical miles northeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

This Afternoon

S wind 11 to 13 kt. A chance of showers and thunderstorms. Bay waters a light chop.

Tonight

SSW wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms before 7pm. Bay waters smooth.

Friday

Variable winds less than 5 kt becoming ESE 5 to 9 kt in the morning. A chance of showers and thunderstorms after 2pm. Bay waters smooth becoming a light chop.

Friday Night

E wind around 9 kt. A chance of showers and thunderstorms, mainly before 8pm. Bay waters a light chop.

Saturday

ESE wind around 10 kt. A chance of showers and thunderstorms. Bay waters a light chop.

Saturday Night

E wind around 11 kt. A slight chance of showers and thunderstorms. Bay waters a light chop.

Sunday

E wind 9 to 12 kt. A chance of showers and thunderstorms. Bay waters a light chop.

Sunday Night

E wind around 11 kt. A chance of showers and thunderstorms. Bay waters a light chop.

Monday

E wind 9 to 11 kt. Showers and thunderstorms likely. Bay waters a light chop.

*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.