Sunday, August 15, 2021

...FRED MAY ENCOUNTER WIND SHEAR AND DRY AIR TO ITS NORTH...SEA SURFACE TEMPS ARE PERFECT...GRACE STRUGGLING SOME SHEAR OVER THE STORM...

FRED IS MORE THAN LIKELY NEARING TROPICAL STORM STATUS.  40MPH SUSTAIN SURFACE WINDS ARE WITHIN THAT THRESHOLD FOR A TROPICAL STORM.  ALL NIGHT WINDS AT THE KEYS HAVE BEEN GUSTING AT TIME 40-50MPH.  

ON FRED'S TRACK IT WILL ENCOUNTER SOME WESTERLY AND SOUTHWESTERLY SHEAR FROM AND UPPER LEVEL LOW THAT HAS BEEN LINGERING SOUTH OF THE FLORIDA PAN HANDLE.

ALSO THERE IS AN ABUNDANCE OF DRY AIR STILL LINGERING IN THE GULF WHICH COULD BE HOLDING FRED FROM RAPIDLY STRENGTHENING.

RTW

NATIONAL HURRICANE CENTER

...REMNANTS OF FRED TRYING TO RE-ORGANIZE INTO A TROPICAL STORM OVER THE SOUTHEASTERN GULF OF MEXICO... ...TROPICAL STORM WATCH ISSUED FOR PORTIONS OF THE NORTHERN GULF COAST...


5:00 AM EDT Sun Aug 15
Location: 24.4°N 84.6°W
Moving: NNW at 8 mph
Min pressure: 1011 mb
Max sustained: 40 mph






 



MODEL TREND

 

GRACE IS ENCOUNTERING DRY AIR AND WESTERLY WIND SHEAR AT THIS TIME.  ON THE FORECAST TRACK, GRACE WILL ENCOUNTER THE MOUNTAINOUS TERRAIN OF DOMINICAN REPUBLIC AS FRED DID. THIS WILL WEAKEN GRACE EVEN FURTHER AND SOME OF THE MODELS SHOW GRACE AS AN OPEN WAVE WHEN THE STORM EXITS DOMINICAN.  SO WE WILL CONTINUE TO WATCH GRACE.

THE FORECAST MODELS ARE ALL OVER THE PLACE AND THIS MAKES FORECASTING GRACE MORE COMPLICATED.  SO KEEP WATCHING GRACE DURING THE COMING DAYS.

RTW

NATIONAL HURRICANE CENTER

...GRACE REMAINS DISORGANIZED AS IT APPROACHES PUERTO RICO... ...HEAVY RAINFALL ACROSS THE LESSER AND GREATER ANTILLES REMAINS THE PRIMARY THREAT OVER THE NEXT FEW DAYS...


5:00 AM AST Sun Aug 15
Location: 16.9°N 64.4°W
Moving: WNW at 16 mph
Min pressure: 1010 mb
Max sustained: 40 mph



 

MODEL TREND





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Ralph's Tropical Weather

...GRACE DISORGANIZED AT THIS TIME...FRED IS FORECAST TO STRENGTHEN BACK TO STORM STRENGTH ON SUNDAY...

NATIONAL HURRICANE CENTER

...POORLY ORGANIZED GRACE NOW MOVING A BIT SLOWER... ...HEAVY RAINFALL ACROSS THE LESSER AND GREATER ANTILLES REMAINS A PRIMARY THREAT OVER THE NEXT FEW DAYS...


11:00 PM AST Sat Aug 14
Location: 16.8°N 62.4°W
Moving: WNW at 20 mph
Min pressure: 1010 mb
Max sustained: 40 mph






 





...REMNANTS OF FRED EXPECTED TO RE-DEVELOP INTO A TROPICAL STORM OVER THE GULF OF MEXICO ON SUNDAY...

11:00 PM EDT Sat Aug 14
Location: 23.8°N 84.3°W
Moving: WNW at 9 mph
Min pressure: 1012 mb
Max sustained: 35 mph








 



Saturday, August 14, 2021

GRACE AND FRED FORECAST COMBINED

 


...SQUALLY WEATHER FROM GRACE SPREADING ACROSS THE LESSER ANTILLES... ...HEAVY RAINFALL ACROSS THE LESSER AND GREATER ANTILLES WILL BE A CONCERN IN THE COMING DAYS...


5:00 PM AST Sat Aug 14
Location: 15.9°N 60.7°W
Moving: W at 26 mph
Min pressure: 1010 mb
Max sustained: 40 mph



 


...REMNANTS OF FRED MOVING WEST-NORTHWESTWARD ACROSS THE SOUTHEAST GULF OF MEXICO... ...FORECAST TO RE-DEVELOP ON SUNDAY OVER THE GULF OF MEXICO...


5:00 PM EDT Sat Aug 14
Location: 24.0°N 84.6°W
Moving: WNW at 13 mph
Min pressure: 1012 mb
Max sustained: 35 mph




 







...LATEST NHC TRACK ALMOST MIMICS FRED'S PREVIOUS TRACK...

 

AS YOU CAN SEE IN MAP BELOW THE LATEST NHC FORECAST TRACK FOR GRACE, TRACKS OVER THE GREATER ANTILLES, SOUTH OF PUERTO RICO, DOMINICAN AND CUBA.  WE ALL KNOW THIS WILL CHANGE FROM FORECAST TO FORECAST RUN, BUT IT DOES SEEM TO BE THE ATLANTIC RIDGE CAMPED OUT IN THIS REGION AND THESE STORMS ARE FOLLOWING THE SAME PATH.  ALSO WEAKER SYSTEMS TEND TO TRACK MORE WESTWARD THAN STRONGER SYSTEMS, THAT ARE GOVERN BY COLD FRONTS AND WHERE THE HIGH PRESSURE RIDGE IS LOCATED.