780  
FZPN03 KNHC 220303  
HSFEP2  
 
HIGH SEAS FORECAST  
NWS NATIONAL HURRICANE CENTER MIAMI FL  
0430 UTC MON OCT 22 2018  
 
SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS  
 
SEAS GIVEN AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE  
HEIGHT OF THE HIGHEST 1/3 OF THE WAVES. INDIVIDUAL WAVES MAY BE  
MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.  
 
PAN PAN  
 
E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE  
EQUATOR E OF 120W  
 
SYNOPSIS VALID 0000 UTC MON OCT 22.  
24 HOUR FORECAST VALID 0000 UTC TUE OCT 23.  
48 HOUR FORECAST VALID 0000 UTC WED OCT 24.  
 
.WARNINGS.  
   
..HURRICANE WARNING
 
 
.HURRICANE WILLA NEAR 17.7N 107.2W 941 MB AT 0300 UTC OCT 22 MOVING  
N-NW OR 340 DEG AT 6 KT. MAXIMUM SUSTAINED WINDS 125 KT GUSTS 150  
KT. TROPICAL STORM FORCE WINDS WITHIN 80 NM NE...70 NM SE AND NW  
QUADRANTS AND 50 NM SW QUADRANTS. WINDS 20 TO 33 KT AND SEAS 12 FT  
OR GREATER WITHIN 150 NM OF CENTER EXCEPT 120 NM SW QUADRANT WITH  
SEAS TO 35 FT. ELSEWHERE WITHIN 420 NM SE AND 180 NM NW SEMICIRCLES  
OF CENTER WINDS 20 KT OR LESS. SEAS TO 11 FT PRIMARILY IN MIXED  
SWELL.  
.24 HOUR FORECAST HURRICANE WILLA NEAR 19.7N 107.5W. MAXIMUM  
SUSTAINED WINDS 125 KT GUSTS 150 KT. TROPICAL STORM FORCE WINDS  
WITHIN 100 NM E SEMICIRCLE...70 NM SW QUADRANT AND 80 NM NW  
QUADRANT. WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER WITHIN 240  
NM SE AND 180 NM NW SEMICIRCLES WITH SEAS TO 37 FT. ELSEWHERE  
WITHIN 540 NM SE AND 300 NM NW SEMICIRCLES OF CENTER WINDS 20 KT  
OR LESS. SEAS TO 11 FT PRIMARILY IN MIXED SWELL. SCATTERED TSTMS  
IN BANDS WITHIN 300 NM OF CENTER.  
.48 HOUR FORECAST HURRICANE WILLA NEAR 22.1N 106.2W. MAXIMUM  
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS  
WITHIN 70 NM W SEMICIRCLE...80 NM NE AND 100 NM SE QUADRANTS.  
WINDS 20 TO 33 KT AND SEAS 12 FT OR GREATER WITHIN 270 NM S AND  
150 NM N SEMICIRCLES WITH SEAS TO 33 FT. ELSEWHERE WITHIN 270 NM  
OF LINE FROM 13N102W TO 25N115W...INCLUDING GULF OF CALIFORNIA S  
OF 25.5N...WINDS 20 KT OR LESS. SEAS TO 11 FT PRIMARILY IN MIXED  
SWELL. SCATTERED TSTMS IN BANDS WITHIN 300 NM OF CENTER.  
.72 HOUR FORECAST POST-TROPICAL WILLA NEAR 26.2N 101.3W. MAXIMUM  
SUSTAINED WINDS 30 KT GUSTS 40 KT.  
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.   
96 HOUR FORECAST
 
DISSIPATED.  
   
..TROPICAL STORM WARNING
 
 
.TROPICAL STORM VICENTE NEAR 13.9N 98.7W 1005 MB AT 0300 UTC OCT  
22 MOVING W OR 260 DEG AT 9 KT. MAXIMUM SUSTAINED WINDS 35 KT  
GUSTS 45 KT. TROPICAL STORM FORCE WINDS WITHIN 20 NM E AND 30 NM  
W SEMICIRCLES. SEAS 12 FT OR GREATER WITHIN 45 NM NE...30 NM SE  
AND 15 NM NW QUADRANTS WITH SEAS TO 13 FT. ELSEWHERE WITHIN 90  
NM OF CENTER WINDS 20 TO 33 KT. SEAS TO 9 FT.  
.24 HOUR FORECAST TROPICAL STORM VICENTE NEAR 15.7N 101.7W.  
MAXIMUM SUSTAINED WINDS 35 KT GUSTS 45 KT. TROPICAL STORM FORCE  
WINDS WITHIN 20 NM E SEMICIRCLE. WINDS 20 TO 33 KT AND SEAS 8 TO  
12 FT ELSEWHERE WITHIN 120 NM OF CENTER. SCATTERED TSTMS IN  
BANDS WITHIN 120 NM OF CENTER.  
.48 HOUR FORECAST POST TROPICAL VICENTE NEAR 18.8N 103.7W.  
WITHIN 30 NM OF CENTER WINDS 20 TO 30 KT. SEAS TO 10 FT  
PRIMARILY IN MIXED SWELL. SCATTERED TSTMS IN BANDS WITHIN 90 NM  
OF CENTER.   
72 HOUR FORECAST
 
DISSIPATED.  
 
FORECAST WINDS IN AND NEAR ACTIVE TROPICAL CYCLONES SHOULD BE  
USED WITH CAUTION DUE TO UNCERTAINTY IN FORECAST TRACK...SIZE  
AND INTENSITY.  
 
.SYNOPSIS AND FORECAST.  
   
WITHIN 30 NM OF LINE FROM 16N95W TO 14N95.5W
 
INCLUDING THE  
GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS TO 8 FT.  
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 
.LOW PRES 11N117W 1008 MB. WITHIN 180 NM SE QUADRANT WINDS 20 KT  
OR LESS. SEAS TO 8 FT.  
.24 HOUR FORECAST LOW PRES 12N118.5W 1009 MB. WITHIN 300 NM SE  
QUADRANT WINDS 20 KT OR LESS. SEAS TO 9 FT.  
.48 HOUR FORECAST LOW PRES 12N119W 1011 MB. WITHIN 150 NM E  
QUADRANT WINDS 20 KT OR LESS. SEAS TO 8 FT.  
 
.WITHIN 120 NM OF 05N83W WINDS 20 KT OR LESS. SEAS TO 8 FT IN SW  
SWELL.  
.12 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 
.S OF LINE FROM 03.4S100W TO 02N122W WINDS 20 KT OR LESS. SEAS  
TO 8 FT PRIMARILY IN SW SWELL.  
.24 HOUR FORECAST S OF LINE FROM 03.4S94W TO 00N116W WINDS 20 KT  
OR LESS. SEAS TO 8 FT PRIMARILY IN SW SWELL.  
.36 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 
.WITHIN AREA BOUNDED BY 22N140W TO 12N134W TO 12N140W TO 22N140W  
WINDS 20 KT OR LESS. SEAS TO 8 FT IN MIXED SWELL.  
.24 HOUR FORECAST WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 
.REMAINDER OF AREA WINDS 20 KT OR LESS. SEAS LESS THAN 8 FT.  
 
CONVECTION VALID AT 0300 UTC MON OCT 22...  
   
HURRICANE WILLA
 
NUMEROUS STRONG WITHIN 75 NM OF CENTER  
SURROUNDED BY SCATTERED MODERATE TO STRONG IN BANDS ELSEWHERE  
WITHIN 300 NM OF CENTER.  
   
TROPICAL STORM VICENTE
 
SCATTERED MODERATE TO STRONG IN BAND  
WITHIN 150 NM OVER THE W SEMICIRCLE OF CENTER.  
   
TROPICAL WAVE N OF 06N ALONG 88.5W
 
SCATTERED MODERATE  
ISOLATED STRONG WITHIN 60 NM OF 06N89.5W.  
   
LOW PRES 11N117W
 
SCATTERED MODERATE ISOLATED STRONG WITHIN  
150 NM SE SEMICIRCLE AND WITHIN 30 NM OF 14.5N118.5W.  
   
INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH
 
 
MONSOON TROUGH FROM 09N83W TO 09N88W TO 12N96W THEN RESUMES FROM  
13N111W TO LOW PRES 11N117W TO 09N130W TO 10N140W. SCATTERED  
MODERATE ISOLATED STRONG WITHIN 120 NM OF LINE FROM 05N78W TO 09N86W  
AND WITHIN 150 NM OF 10N93W. SCATTERED MODERATE FROM 05N TO 12N  
BETWEEN 130W AND 140W.  
 

 
.FORECASTER NELSON. NATIONAL HURRICANE CENTER.  
 
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