000
FZPN03 KNHC 201557
HSFEP2

HIGH SEAS FORECAST
NWS NATIONAL HURRICANE CENTER MIAMI FL
1630 UTC FRI OCT 20 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SUPERSEDED BY NEXT ISSUANCE IN 6 HOURS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 1200 UTC FRI OCT 20.
24 HOUR FORECAST VALID 1200 UTC SAT OCT 21.
48 HOUR FORECAST VALID 1200 UTC SUN OCT 22.

.WARNINGS.

...HURRICANE WARNING...
.HURRICANE NORMA NEAR 19.4N 109.2W 960 MB AT 1500 UTC OCT 20 
MOVING NNW OR 335 DEG AT 7 KT. MAXIMUM SUSTAINED WINDS 95 KT 
GUSTS 115 KT. TROPICAL STORM FORCE WINDS WITHIN 150 NM NE 
QUADRANT...110 NM SE QUADRANT...90 NM SW QUADRANT...AND 120 NM NW
QUADRANT. SEAS 12 FT OR GREATER WITHIN 270 NM OF CENTER EXCEPT 
210 NM NE QUADRANT WITH SEAS TO 38 FT. ELSEWHERE WITHIN 19N104W 
TO 22N108W TO 21N111W TO 18N112W TO 15N109W TO 16N107W TO 
19N104W...INCLUDING NEAR CABO CORRIENTES...WINDS 20 TO 33 KT. 
SEAS 10 TO 12 FT. REMAINDER OF AREA WITHIN 18N103W TO 23N106W TO 
23N118W TO 16N117W TO 12N111W TO 13N105W TO 18N103W...INCLUDING 
NEAR CABO CORRIENTES AND THE GULF OF CALIFORNIA...WINDS 20 KT OR
LESS. SEAS 8 TO 11 FT IN MIXED SWELL.
.24 HOUR FORECAST HURRICANE NORMA NEAR 22.1N 109.8W. MAXIMUM 
SUSTAINED WINDS 75 KT GUSTS 90 KT. TROPICAL STORM FORCE WINDS 
WITHIN 130 NM NE QUADRANT...100 NM SE QUADRANT...90 NM SW 
QUADRANT...AND 110 NM NW QUADRANT. SEAS 12 FT OR GREATER WITHIN 
150 NM NE QUADRANT...240 NM SE QUADRANT...270 NM SW 
QUADRANT...AND 310 NM NW QUADRANT WITH SEAS TO 30 FT. ELSEWHERE 
WITHIN 24N107W TO 24N112W TO 22N112W TO 19N110W TO 21N105W TO 
24N107W...INCLUDING NEAR CABO CORRIENTES AND THE GULF OF 
CALIFORNIA...WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF 
AREA WITHIN 21N112W TO 25N108W TO 26N117W TO 18N117W TO 15N109W 
TO 19N105W TO 21N112W...INCLUDING NEAR CABO CORRIENTES AND THE 
GULF OF CALIFORNIA...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN 
MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM NORMA NEAR 23.9N 109.1W. 
MAXIMUM SUSTAINED WINDS 60 KT GUSTS 75 KT. TROPICAL STORM FORCE 
WINDS WITHIN 90 NM E SEMICIRCLE...70 NM SW QUADRANT AND 80 NM NW 
QUADRANT. SEAS 12 FT OR GREATER WITHIN 180 NM SE QUADRANT...150 
NM SW QUADRANT...AND 90 NM IN N SEMICIRCLE WITH SEAS TO 22 FT. 
ELSEWHERE WITHIN 25N108W TO 26N110W TO 23N111W TO 21N109W TO 
22N106W TO 23N106W TO 25N108W...INCLUDING THE GULF OF 
CALIFORNIA...WINDS 20 TO 33 KT. SEAS 10 TO 12 FT. REMAINDER OF 
AREA WITHIN 23N106W TO 27N110W TO 22N113W TO 19N111W TO 18N106W 
TO 20N105W TO 23N106W...INCLUDING NEAR CABO CORRIENTES AND THE 
GULF OF CALIFORNIA...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN 
MIXED SWELL.
.72 HOUR FORECAST TROPICAL STORM NORMA INLAND NEAR 24.7N 107.4W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. EXTENDED 
OUTLOOK...USE FOR GUIDANCE ONLY...ERRORS MAY BE LARGE. .96 HOUR 
FORECAST POST-TROPICAL NORMA NEAR 26.0N 106.0W. MAXIMUM SUSTAINED
WINDS 20 KT GUSTS 30 KT.
.120 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 16N95W TO 16N96W TO 14N96W TO 13N95W TO 14N95W TO
16N95W...INCLUDING THE GULF OF TEHUANTEPEC...N TO NE WINDS 20 TO
25 KT. SEAS 8 FT.
.24 HOUR FORECAST WITHIN 16N95W TO 16N96W TO 14N97W TO 12N97W TO
13N95W TO 14N94W TO 16N95W...INCLUDING THE GULF OF 
TEHUANTEPEC...N TO NE WINDS 20 TO 25 KT. SEAS 8 FT.
.36 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS 
LESS THAN 8 FT.

.WITHIN 16N101W TO 15N118W TO 30N116W TO 30N140W TO 00N140W TO
03.4S98W TO 16N101W...INCLUDING SEBASTIAN VIZCAINO BAY...WINDS 
20 KT OR LESS. SEAS 8 TO 12 FT IN NW SWELL.
.24 HOUR FORECAST WITHIN 13N104W TO 17N117W TO 30N126W TO 
00N139W TO 03.4S120W TO 03.4S97W TO 13N104W...INCLUDING SEBASTIAN
VIZCAINO BAY...WINDS 20 KT OR LESS. SEAS 8 TO 10 FT IN NW SWELL.
.48 HOUR FORECAST WITHIN 18N113W TO 30N115W TO 30N122W TO 
00N131W TO 03.4S120W TO 03.4S97W TO 18N113W...INCLUDING THE GULF 
OF CALIFORNIA AND SEBASTIAN VIZCAINO BAY...WINDS 20 KT OR LESS. 
SEAS 8 TO 9 FT IN NW SWELL.

.LOW PRES NEAR 09N95W 1007 MB. WITHIN 10N92W TO 11N95W TO 10N97W
TO 06N97W TO 05N95W TO 06N92W TO 10N92W WINDS 20 KT OR LESS. 
SEAS 8 FT IN SW SWELL.
.24 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
10N96W 1007 MB. WITHIN 11N94W TO 13N101W TO 10N102W TO 05N100W 
TO 04N95W TO 06N92W TO 11N94W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN W TO NW SWELL.
.48 HOUR FORECAST LOW PRES...POSSIBLE TROPICAL CYCLONE...NEAR
11N96W 1006 MB. WITHIN 12N93W TO 15N100W TO 11N103W TO 06N102W 
TO 03N96W TO 05N92W TO 12N93W WINDS 20 KT OR LESS. SEAS 8 TO 9 
FT IN W TO NW SWELL.

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

CONVECTION VALID AT 1530 UTC FRI OCT 20...

HURRICANE NORMA...NUMEROUS MODERATE TO STRONG FROM 17N TO 22N 
BETWEEN 107W AND 112W.

.INTERTROPICAL CONVERGENCE ZONE/MONSOON TROUGH...
MONSOON TROUGH EXTENDS FROM 10N86W TO LOW PRES NEAR 09N96W 1007 
MB TO 23N101W...THEN FROM 13N112W TO LOW PRES NEAR 20N121W 1008 
MB TO 07N130W TO 11N140W. SCATTERED MODERATE ISOLATED STRONG 
FROM 02N TO 10N BETWEEN 78W AND 93W. SCATTERED MODERATE 
FROM 06N TO 13N BETWEEN 110W AND 124W AND FROM 07N TO 12N AND W 
OF 133W. 

$$ 
.FORECASTER AREINHART. NATIONAL HURRICANE CENTER.