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| Heat Advisory issued August 18 at 12:28AM EDT until August 18 at 7:00PM EDT by NWS Miami FL | ||
| NWS Miami FL | ||
| Category | Certainty | Severity |
| Met | Likely | Moderate |
| Status | Urgency | Category |
| Actual | Expected | Met |
| Effective | Ends | Expires |
| 08/18/2026 12:28 AM | 08/18/2026 07:00 PM | 08/18/2026 07:00 PM |
* WHAT...Heat index values of 105 to 112 expected.
* WHERE...All of South Florida.
* WHEN...From 11 AM this morning to 7 PM EDT this evening.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses.
|
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Hourly Forecast
Tue, 12:00 AM
ClearWinds: 5 mph SW
Tue, 01:00 AM
ClearWinds: 5 mph SW
Tue, 02:00 AM
ClearWinds: 5 mph W
Tue, 03:00 AM
ClearWinds: 3 mph W
Tue, 04:00 AM
ClearWinds: 5 mph W
Tue, 05:00 AM
Mostly ClearWinds: 5 mph W
Tue, 06:00 AM
SunnyWinds: 5 mph W
Tue, 07:00 AM
SunnyWinds: 5 mph W
Tue, 08:00 AM
SunnyWinds: 5 mph W
Tue, 09:00 AM
SunnyWinds: 5 mph W
Tue, 10:00 AM
SunnyWinds: 6 mph W
Tue, 11:00 AM
SunnyWinds: 6 mph W
Tue, 12:00 PM
SunnyWinds: 6 mph W
Tue, 01:00 PM
SunnyWinds: 5 mph NW
Tue, 02:00 PM
SunnyWinds: 6 mph N
Tue, 03:00 PM
SunnyWinds: 6 mph SE
Tue, 04:00 PM
SunnyWinds: 6 mph SE
Tue, 05:00 PM
SunnyWinds: 5 mph SE
Tue, 06:00 PM
Mostly ClearWinds: 5 mph SE
Tue, 07:00 PM
Mostly ClearWinds: 6 mph SE
Tue, 08:00 PM
Partly CloudyWinds: 6 mph SE
Tue, 09:00 PM
Mostly ClearWinds: 5 mph S
Tue, 10:00 PM
Mostly ClearWinds: 3 mph S
Tue, 11:00 PM
Mostly ClearWinds: 3 mph S
Coastal Waters Forecast for Florida
National Weather Service Miami FL
for Jupiter Inlet to Ocean Reef FL out to 60 nm and for East Cape Sable to Bonita Beach FL out to 60 nm.
Atlantic coastal waters from Jupiter Inlet to Ocean Reef out to 60 nm and Gulf coastal waters from East Cape Sable to Chokoloskee out 20 nm and Chokoloskee to Bonita Beach out 60 nm.including the waters of Biscayne Bay and Lake Okeechobee. Seas are provided as a range of the average height of the highest 1/3 of the waves.along with the occasional height of the average highest 10 percent of the waves. Gentle to moderate southerly winds across the Atlantic waters today, with west to northwesterly winds across the Gulf waters. A brief period of cautionary winds are possible over the Gulf waters Tuesday afternoon. Gulf Stream Hazards: None The approximate location of the west wall of the Gulf Stream as of Aug 12, 2026. 22 nautical miles north northeast of Fowey Rocks. 7 nautical miles east of Port Everglades. 3 nautical miles east northeast of Lake Worth. 6 nautical miles east northeast of Jupiter Inlet. This data courtesy of the Naval Oceanographic Office.