Hurricane Erin Forecast Advisory Number 21

By | August 16, 2025

Issued at 1500 UTC SAT AUG 16 2025

000
WTNT25 KNHC 161431
TCMAT5
 
HURRICANE ERIN FORECAST/ADVISORY NUMBER  21
NWS NATIONAL HURRICANE CENTER MIAMI FL       AL052025
1500 UTC SAT AUG 16 2025
 
HURRICANE CENTER LOCATED NEAR 19.7N  62.8W AT 16/1500Z
POSITION ACCURATE WITHIN  20 NM
 
PRESENT MOVEMENT TOWARD THE WEST OR 280 DEGREES AT  15 KT
 
ESTIMATED MINIMUM CENTRAL PRESSURE  923 MB
EYE DIAMETER   5 NM
MAX SUSTAINED WINDS 135 KT WITH GUSTS TO 165 KT.
64 KT....... 25NE  15SE  15SW  20NW.
50 KT....... 40NE  30SE  20SW  40NW.
34 KT.......120NE  50SE  40SW 110NW.
4 M SEAS....240NE 150SE 120SW 180NW.
WINDS AND SEAS VARY GREATLY IN EACH QUADRANT.  RADII IN NAUTICAL
MILES ARE THE LARGEST RADII EXPECTED ANYWHERE IN THAT QUADRANT.
 
REPEAT...CENTER LOCATED NEAR 19.7N  62.8W AT 16/1500Z
AT 16/1200Z CENTER WAS LOCATED NEAR 19.6N  62.1W
 
FORECAST VALID 17/0000Z 20.1N  64.7W
MAX WIND 145 KT...GUSTS 175 KT.
64 KT... 25NE  20SE  15SW  25NW.
50 KT... 50NE  40SE  30SW  40NW.
34 KT...140NE  80SE  60SW 110NW.
 
FORECAST VALID 17/1200Z 21.0N  66.8W
MAX WIND 140 KT...GUSTS 170 KT.
64 KT... 30NE  25SE  20SW  30NW.
50 KT... 70NE  60SE  40SW  50NW.
34 KT...150NE 120SE  90SW 130NW.
 
FORECAST VALID 18/0000Z 22.3N  68.5W
MAX WIND 135 KT...GUSTS 165 KT.
64 KT... 40NE  30SE  20SW  30NW.
50 KT... 80NE  70SE  50SW  60NW.
34 KT...150NE 140SE 110SW 150NW.
 
FORECAST VALID 18/1200Z 23.5N  69.7W
MAX WIND 130 KT...GUSTS 160 KT.
64 KT... 50NE  40SE  30SW  40NW.
50 KT... 80NE  70SE  50SW  60NW.
34 KT...160NE 150SE 120SW 150NW.
 
FORECAST VALID 19/0000Z 24.9N  70.4W
MAX WIND 125 KT...GUSTS 150 KT.
64 KT... 60NE  60SE  40SW  40NW.
50 KT... 90NE  90SE  60SW  70NW.
34 KT...170NE 160SE 140SW 160NW.
 
FORECAST VALID 19/1200Z 26.4N  70.9W
MAX WIND 120 KT...GUSTS 145 KT.
64 KT... 70NE  70SE  40SW  50NW.
50 KT...100NE 100SE  70SW  80NW.
34 KT...180NE 180SE 150SW 160NW.
 
EXTENDED OUTLOOK. NOTE...ERRORS FOR TRACK HAVE AVERAGED NEAR 125 NM
ON DAY 4 AND 175 NM ON DAY 5...AND FOR INTENSITY NEAR 15 KT EACH DAY
 
OUTLOOK VALID 20/1200Z 30.6N  70.9W
MAX WIND 115 KT...GUSTS 140 KT.
50 KT...120NE 130SE  80SW 100NW.
34 KT...210NE 230SE 170SW 170NW.
 
OUTLOOK VALID 21/1200Z 35.7N  66.4W
MAX WIND  95 KT...GUSTS 115 KT.
50 KT...120NE 140SE 120SW 100NW.
34 KT...240NE 270SE 210SW 200NW.
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 19.7N  62.8W
 
INTERMEDIATE PUBLIC ADVISORY...WTNT35 KNHC/MIATCPAT5...AT 16/1800Z
 
NEXT ADVISORY AT 16/2100Z
 
$$
FORECASTER BEVEN

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