000
FZPN03 KNHC 290314
HSFEP2

HIGH SEAS FORECAST
NWS TPC/NATIONAL HURRICANE CENTER MIAMI FL
0430 UTC TUE MAY 29 2007
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS

SECURITE

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W

SYNOPSIS VALID 0000 UTC TUE MAY 29
24 HOUR FORECAST VALID 0000 UTC WED MAY 30
48 HOUR FORECAST VALID 0000 UTC THU MAY 31

.WARNINGS.
...TROPICAL STORM WARNING...
.TROPICAL STORM ALVIN NEAR 12.6N 113.7W 1004 MB AT 0300 UTC MAY
29 MOVING WSW OR 245 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 35 KT 
GUSTS 45 KT. TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR 
GREATER WITHIN 50 NM OF CENTER...WITH SEAS TO 13 FT.
.24 HOUR FORECAST TROPICAL STORM ALVIN NEAR 12.3N 115.4W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE 
WINDS AND SEAS 12 FT OR GREATER WITHIN 60 NM OF CENTER...WITH 
SEAS TO 15 FT.
.48 HOUR FORECAST TROPICAL STORM ALVIN NEAR 12.1N 117.5W. 
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. LITTLE CHANGE IN 
RADIUS OF TROPICAL STORM FORCE WINDS AND SEAS 12 FT OR GREATER.
SEAS TO 18 FT. 
.72 HOUR FORECAST TROPICAL STORM ALVIN NEAR 12.0N 119.0W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM ALVIN NEAR 12.0N 120.2W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.
.120 HOUR FORECAST TROPICAL STORM ALVIN NEAR 12.0N 121.5W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.

.SYNOPSIS AND FORECAST
.LOW PRES 13N98W 1008 MB. WITHIN 30 NM N AND WITHIN 90 NM S 
SEMICIRCLE WINDS 20 KT SEAS 8 FT. 
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR  
13N101W 1008 MB. WITHIN 60 NM N AND WITHIN 120 NM S SEMICIRCLE 
WINDS 20 TO 25 KT SEAS 8 TO 11 FT.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR 
13N102W 1007 MB. WITHIN 120 NM OF CENTER WINDS 20 TO 25 KT SEAS 
8 TO 12 FT.  

.EXCEPT AS NOTED IN WARNINGS...ELSEWHERE S OF 12N BETWEEN 93W 
AND 116W S TO SW WINDS TO 20 KT SEAS TO 9 FT. S OF 9N E OF 85W 
SW WINDS TO 20 KT SEAS LESS THAN 8 FT.
.24 HOUR FORECAST...EXCEPT AS NOTED IN WARNING...ELSEWHERE 
WITHIN 300 NM EITHER SIDE OF LINE 13N105W TO EQUATOR AT 120W S 
TO SW WINDS TO 20 KT SEAS TO 9 FT PRIMARILY IN SW SWELL. 
.48 HOUR FORECAST...EXCEPT AS NOTED IN WARNINGS..ELSEWHERE S OF 
13N BETWEEN 90W AND 125W SLY WINDS TO 20 KT SEAS TO 9 FT 
PRIMARILY IN SW SWELL. 

.REMAINDER OF AREA WINDS LESS THAN 20 KT SEAS LESS THAN 8 FT.

CONVECTION VALID 0300 UTC TUE MAY 29...
TROPICAL STORM ALVIN...NUMEROUS MODERATE TO STRONG WITHIN 30 NM 
N SEMICIRCLE AND WITHIN 75 NM S SEMICIRCLE OF CENTER. SCATTERED 
MODERATE ISOLATED STRONG ELSEWHERE WITHIN 150 NM NW SEMICIRCLE 
AND 120 NM SE SEMICIRCLE.  

LOW PRES 13N98W...NUMEROUS STRONG WITHIN 30 NM 13N97W.

INTERTROPICAL CONVERGENCE ZONE...AXIS 11N85W 12N99W 6N113W 
7N140W. SCATTERED MODERATE ISOLATED STRONG WITHIN 60 NM 11N95W 
AND WITHIN 90 NM OF LINE 13N99W 10N103W AND LINE 9N105W 9N111W 
AND LINE 7N124W 7N131W.

$$
FORECASTER NELSON
TROPICAL PREDICTION CENTER
TROPICAL ANALYSIS AND FORECAST BRANCH