000
FZPN03 KNHC 190907
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1030 UTC THU OCT 19 2023

SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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.

SECURITE

E PACIFIC FROM THE EQUATOR TO 30N E OF 140W AND 03.4S TO THE
EQUATOR E OF 120W

SYNOPSIS VALID 0600 UTC THU OCT 19.
24 HOUR FORECAST VALID 0600 UTC FRI OCT 20.
48 HOUR FORECAST VALID 0600 UTC SAT OCT 21.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE NORMA NEAR 16.7N 107.7W 953 MB AT 0900 UTC OCT 19 
MOVING N OR 355 DEG AT 5 KT. MAXIMUM SUSTAINED WINDS 105 KT 
GUSTS 130 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM NW AND SE 
QUADRANTS...130 NM NE QUADRANT AND 70 NM SW QUADRANT.  SEAS 12 
FT OR GREATER WITHIN 180 NM E SEMICIRCLE AND 150 NM W SEMICIRCLE 
WITH SEAS 12 FT. ELSEWHERE WITHIN 18N104W TO 20N107W TO 18N110W 
TO 14N110W TO 11N105W TO 14N103W TO 18N104W WINDS 30 TO 40 KT. 
SEAS 12 FT. REMAINDER AREA WITHIN 15N101W TO 20N107W TO 15N114W 
TO 05N113W TO 07N104W TO 15N101W WINDS 20 KT OR LESS. SEAS 8 TO 
12 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE NORMA NEAR 18.6N 108.5W. MAXIMUM 
SUSTAINED WINDS 100 KT GUSTS 120 KT. TROPICAL STORM FORCE WINDS 
WITHIN 120 NM NW AND SE QUADRANTS...150 NM NE QUADRANT AND 80 NM 
SW QUADRANT. SEAS 12 FT OR GREATER WITHIN 210 NM OF 
CENTER...EXCEPT 180 NM NE QUADRANT WITH SEAS TO 36 FT. ELSEWHERE 
WITHIN 20N106W TO 21N109W TO 20N111W TO 18N111W TO 17N110W TO 
16N107W TO 20N106W WINDS 20 TO 33 KT. SEAS DESCRIBED ABOVE. 
REMAINDER AREA WITHIN 17N101W TO 30N119W TO 07N119W TO 04N115W 
TO 07N105W TO 17N101W WINDS 20 KT OR LESS. SEAS 8 TO 12 FT IN 
MIXED SWELL.
.48 HOUR FORECAST HURRICANE NORMA NEAR 21.2N 109.6W. MAXIMUM 
SUSTAINED WINDS 80 KT GUSTS 100 KT. TROPICAL STORM FORCE WINDS 
WITHIN 130 NM NE QUADRANT...110 NM SE QUADRANT...80 NM SW 
QUADRANT...AND 100 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
240 NM E SEMICIRCLE...150 NM NE QUADRANT...AND 180 NM SE 
QUADRANT WITH SEAS TO 34 FT. ELSEWHERE WITHIN 23N107W TO 24N109W 
TO 23N112W TO 20N112W TO 19N109W TO 20N107W TO 23N107W WINDS 20 
TO 33 KT. SEAS DESCRIBED ABOVE. REMAINDER AREA WITHIN 25N108W TO 
30N119W TO 10N117W TO 11N103W TO 16N101W TO 25N108W WINDS 20 KT 
OR LESS. SEAS 8 TO 12 FT IN MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM NORMA NEAR 23.0N 109.7W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT.
EXTENDED OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE.
.96 HOUR FORECAST TROPICAL STORM NORMA NEAR 23.4N 109.3W. 
MAXIMUM SUSTAINED WINDS 50 KT GUSTS 60 KT.
.120 HOUR FORECAST TROPICAL STORM NORMA NEAR 24.0N 108.4W. 
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT.

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 16N94W TO 16N95W TO 16N96W TO 15N96W TO 15N95W TO 15N94W 
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... N WINDS 20 TO 
25 KT. SEAS LESS THAN 8 FT.
.24 HOUR FORECAST WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 
15N95W TO 15N94W TO 16N94W...INCLUDING THE GULF OF 
TEHUANTEPEC... N WINDS 20 TO 25 KT. SEAS LESS THAN 8 FT.
.48 HOUR FORECAST LITTLE CHANGE.

.WITHIN 30N121W TO 30N140W TO 08N140W TO 15N129W TO 30N121W 
WINDS 20 KT OR LESS. SEAS 8 TO 13 FT IN NW SWELL.
.24 HOUR FORECAST WITHIN 30N120W TO 30N140W TO 04N140W TO 
04N122W TO 30N120W WINDS 20 KT OR LESS. SEAS 8 TO 11 FT IN MIXED 
SWELL.
.48 HOUR FORECAST WITHIN 12N120W TO 29N121W TO 17N135W TO 
00N135W TO 03.4S112W TO 08N101W TO 12N120W WINDS 20 KT OR LESS. 
SEAS 8 TO 10 FT IN MIXED SWELL.

.WITHIN 01N111W TO 00N120W TO 03.4S120W TO 03.4S109W TO 01N111W 
WINDS 20 KT OR LESS. SEAS 8 FT IN S TO SW SWELL. 
.24 HOUR FORECAST WITHIN 01S105W TO 00N114W TO 01S120W TO 
03.4S120W TO 03.4S103W TO 01S105W WINDS 20 KT OR LESS. SEAS 8 FT 
IN S TO SW SWELL. 
.48 HOUR FORECAST CONDITIONS MERGED. 

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

CONVECTION VALID AT 0830 UTC THU OCT 19...

HURRICANE NORMA...NUMEROUS MODERATE SCATTERED STRONG CONVECTION 
IS NOTED WITHIN 120 NM OF THE CENTER OF NORMA. SCATTERED 
MODERATE AND ISOLATED STRONG CONVECTION IS ELSEWHERE FROM 09N TO 
21N BETWEEN 101W AND 111W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH FROM 09.5N84W TO LOW PRESSURE NEAR 08.5N94.5W TO 
10N100W...THEN NEAR 11N115W TO 07N132W TO 09N140W. SCATTERED 
MODERATE ISOLATED STRONG FROM 03N TO 12N BETWEEN 86W AND 100W.

$$
.FORECASTER AL. NATIONAL HURRICANE CENTER.