088  
WTPZ21 KNHC 302043  
TCMEP1  
 
TROPICAL STORM ALVIN FORECAST/ADVISORY NUMBER 9  
NWS NATIONAL HURRICANE CENTER MIAMI FL EP012025  
2100 UTC FRI MAY 30 2025  
 
TROPICAL STORM CENTER LOCATED NEAR 18.1N 109.0W AT 30/2100Z  
POSITION ACCURATE WITHIN 30 NM  
 
PRESENT MOVEMENT TOWARD THE NORTH-NORTHWEST OR 335 DEGREES AT 9 KT  
 
ESTIMATED MINIMUM CENTRAL PRESSURE 1001 MB  
MAX SUSTAINED WINDS 45 KT WITH GUSTS TO 55 KT.  
34 KT.......120NE 100SE 60SW 80NW.  
4 M SEAS....120NE 60SE 60SW 90NW.  
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 18.1N 109.0W AT 30/2100Z  
AT 30/1800Z CENTER WAS LOCATED NEAR 17.7N 108.9W  
 
FORECAST VALID 31/0600Z 19.4N 109.3W  
MAX WIND 35 KT...GUSTS 45 KT.  
34 KT... 90NE 70SE 30SW 50NW.  
 
FORECAST VALID 31/1800Z 20.8N 109.5W...POST-TROP/REMNT LOW  
MAX WIND 30 KT...GUSTS 40 KT.  
 
FORECAST VALID 01/0600Z 22.4N 109.4W...POST-TROP/REMNT LOW  
MAX WIND 25 KT...GUSTS 35 KT.  
 
FORECAST VALID 01/1800Z...DISSIPATED  
 
REQUEST FOR 3 HOURLY SHIP REPORTS WITHIN 300 MILES OF 18.1N 109.0W  
 
NEXT ADVISORY AT 31/0300Z  
 

 
FORECASTER HAGEN  
 
 
 
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