Severe Storms in the Upper Midwest; Heavy Rain in the Mid-Atlantic; Widespread Heat in the Southwest

Severe storms with damaging winds, large hail, and locally heavy rain will impact portions of the Upper Midwest. A lingering front will bring another round of heavy showers and thunderstorms to the Mid-Atlantic. Excessive heat continues in the South Plains to the Southwest, and fire weather threats remain Critical across the Great Basin, Northern Rockies, and into the Plains.
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Hazardous Weather Conditions

Last Update: 944 AM EDT Thu Aug 13 2020

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Miami - South Florida Local Forecast Office

11NM WSW Highland Point FL

Marine Zone Forecast


Synopsis: High pressure across the Atlantic waters is maintaining light easterly to southeasterly surface flow and generally favorable marine conditions. Isolated to scattered showers and storms are possible across the Atlantic waters during the overnight and morning hours, transitioning to the Gulf waters during the late afternoon and early evening hours. The primary impacts with any storms will be locally gusty winds, cloud to surface lightning, and brief reductions to visibility during heavy downpours. Isolated waterspouts will also be possible, primarily during the morning hours.

.GULF STREAM HAZARDS...Locally higher winds and waves in and around showers and thunderstorms.

The approximate location of the west wall of the Gulf Stream as of Aug 13, 2020 at 1200 UTC...

6 nautical miles east southeast of Fowey Rocks. 11 nautical miles east northeast of Port Everglades. 8 nautical miles east southeast of Lake Worth. 13 nautical miles east southeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

Rest Of Today
Southeast winds 5 to 10 knots. Seas less than 2 feet. Period 3 seconds. Bay and inland waters a light chop. Chance of showers and thunderstorms.
Tonight
East winds 5 to 10 knots. Seas less than 2 feet. Period 3 seconds. Bay and inland waters a light chop. Chance of thunderstorms late in the evening. Chance of showers through the night.
Friday
East southeast winds 5 to 10 knots becoming south. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. Slight chance of thunderstorms in the morning. Chance of showers. Chance of thunderstorms.
Friday Night
East southeast winds 5 to 10 knots. Seas less than 2 feet. Period 2 seconds. Bay and inland waters a light chop. Chance of showers and slight chance of thunderstorms late in the evening.
Saturday
Southeast winds 5 to 10 knots becoming south southwest. Seas less than 2 feet. Bay and inland waters a light chop. Chance of showers and thunderstorms.
Saturday Night
South winds around 5 knots becoming east southeast 5 knots after midnight. Seas less than 1 foot. Bay and inland waters smooth. Chance of showers and slight chance of thunderstorms.
Sunday
South southeast winds around 5 knots becoming west 5 knots. Seas less than 2 feet. Bay and inland waters smooth. Chance of showers and thunderstorms.
Sunday Night
Northwest winds 5 knots becoming northeast after midnight, then becoming southeast after midnight. Seas less than 2 feet. Bay and inland waters smooth. Chance of showers and thunderstorms late in the evening, then slight chance of showers and thunderstorms after midnight.
Monday
South winds around 5 knots becoming west southwest. Seas less than 2 feet. Bay and inland waters a light chop. Chance of showers and thunderstorms.
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ABOUT THIS FORECAST

Last Update: 944 AM EDT Thu Aug 13 2020
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