Marine, Tropical and Tsunami Services Branch
National Program
<Summary WMOID> <DDHHMM>
HSFEPI
HIGH SEAS FORECAST FOR METAREA XII
ISSUED BY U.S. NATIONAL WEATHER SERVICE
0100 UTC <DOW> <MON> <DD> <YYYY>
CCODE/<ccode priority>:31:<ccode area>:<ccode repeat>:00/<ccode SAT>/NWS/CCODE
SECURITE
PART IA: WARNINGS
VALID: 24 HOURS STARTING 00 UTC 2018 AUG 28
FOR WARNING DETAILS SEE WHPN01-05 KWBC HSWPAC
1. T.S. MIRIAM
HURRICANE FORCE WARNING PA0100250826/18(014)
STORM FORCE WARNING PA0200480826/18(015)
GALE FORCE WARNING PA0301050824/18(019)
VERY HIGH SEAS PA0600140826/18(014)
HIGH SEAS PA0700220826/18(014)
VERY ROUGH SEAS PA0800920824/18(019)
2. LOW 45N165E
STORM FORCE WARNING PA0200490827/18(005)
GALE FORCE WARNING PA0301060827/18(005)
HIGH SEAS PA0700230826/18(005)
VERY ROUGH SEAS PA0800920824/18(005)
3. LOW 45N178E
GALE FORCE WARNING PA0301040827/18(008)
VERY ROUGH SEAS PA0800920824/18(008)
4. LOW 59N150W
GALE FORCE WARNING PA0301030825/18(010)
VERY ROUGH SEAS PA0800910825/18(010)
5. LOW 15N110W
VERY ROUGH SEAS PA0800930824/18(001)
6. DEVELOPING LOW
PART IB: WARNINGS
VALID: 24 HOURS STARTING 00 UTC 2018 AUG 29
FOR WARNING DETAILS SEE WHPN01-06 KWBC HSWPAC
1. HURR MIRIAM
HURRICANE FORCE WARNING PA0100250826/18(015)
STORM FORCE WARNING PA0200480826/18(016)
GALE FORCE WARNING PA0301050824/18(020)
VERY HIGH SEAS PA0600140826/18(015)
HIGH SEAS PA0700220826/18(015)
VERY ROUGH SEAS PA0800920824/18(020)
2. LOW 51N178E
GALE FORCE WARNING PA0301060827/18(006)
VERY ROUGH SEAS PA0800920824/18(006)
3. LOW 54N178W
GALE FORCE WARNING ABSORBED INTO PA0301060827/18(006)
VERY ROUGH SEAS ABSORBED INTO PA080920824/18(006)
4. LOW DISSIPATED AND CONDITIONS DIMINISHED.
5. LOW...POSSIBLE TROPICAL CYCLONE...17N114W
GALE FORCE WARNING PA0301070827/18(008)
VERY ROUGH SEAS PA0800930824/18(002)
6. NEW LOW 28N171W
GALE FORCE WARNING PA0301050827/18(001)
VERY ROUGH SEAS PA0800920824/18(008)
PART II: SYNOPSES
1. T.S. MIRIAM 14.0N 131.8W 998 MB MOVING W OR 270 DEG AT 13 KT.
24 HOUR FORECAST HURRICANE MIRIAM NEAR 13.9N 135.5W.
48 HOUR FORECAST HURRICANE MIRIAM NEAR 14.5N 139.0W.
2. LOW 45N165E 988 MB MOVING NE 25 KT.
24 HOUR FORECAST LOW 51N178E 992 MB.
48 HOUR FORECAST LOW 59N178W 987 MB.
3. LOW 45N178E 998 MB MOVING NE 25 KT.
24 HOUR FORECAST LOW 54N178W 992 MB.
48 HOUR FORECAST LOW AND CONDITIONS ABSORBED BY LOW 59N178W
DESCRIBED ABOVE.
4. LOW 59N150W 1010 MB MOVING SE 15 KT. FRONT EXTENDS FROM LOW CENTER TO
48N165W.
24 HOUR FORECAST LOW 58N136W 1007 MB.
48 HOUR FORECAST LOW DISSIPATED AND CONDITIONS DIMINISHED.
5. LOW 15N110W 1006 MB MOVING E 10 KT.
24 HOUR FORECAST LOW...POSSIBLE TROPICAL CYCLONE...NEAR 17N114W 1005 MB.
48 HOUR FORECAST LOW...POSSIBLE TROPICAL CYCLONE...NEAR 18N118W 1003 MB.
6. AREA OF WINDS FROM 36N TO 54N BETWEEN 124W AND 135W.
24 HOUR FORECAST WINDS DIMINISHED BUT SEAS REMAIN ROUGH.
48 HOUR FORECAST SEAS DIMINISHED.
7.DENSE FOG. VSBY OCCASIONALLY LESS THAN 1 NM FROM 47N TO 52N
BETWEEN 145W AND 154W AND FROM 38N TO 44N BETWEEN 172W AND 178E
AND WITHIN 300 NM SE OF A LINE FROM 50N159W TO 43N172W.
24 HOUR FORECAST DENSE FOG FROM 44N TO 50N BETWEEN 145W AND
164W AND FROM 39N TO 52N BETWEEN 164W AND 176E.
48 HOUR FORECAST DENSE FOG FROM 47N TO 51N BETWEEN 148W AND
158W AND FROM 42N TO 57N BETWEEN 158W AND 175W.
8. 48 HOUR FORECAST NEW LOW 28N171W 1011 MB.
PART IIIA: FORECASTS
VALID: 24 HOURS STARTING 00 UTC 2018 28 AUG
WINDS - NEAR GALE
1.NEAR GALE PA0400570828/18(001)
AREA: 36.0N 124.0W, 54.0N 124.0W, 54.0N 135.0W, 36.0N 135.0W
WINDS 28 TO 33 KT.
2.ROUGH SEAS PA0900570828/18(001)
AREA: 36.0N 124.0W, 54.0N 124.0W, 54.0N 135.0W, 36.0N 135.0W
SIGNIFICANT WAVE HEIGHT 2.5 TO 4 M
VISIBILITY
1.DENSE FOG PA1000240828/18(001)
AREA: 47.0N 145.0W, 52.0N 145.0W, 52.0N 154.0W, 47.0N 154.0W
VISIBILITY LESS THAN 1 NM
2.DENSE FOG PA1000250828/18(001)
AREA: 38.0N 178.0E, 44.0N 178.0E, 44.0N 172.0W, 38.0N 172.0W
VISIBILITY LESS THAN 1 NM
3.DENSE FOG PA1000260828/18(001)
AREA: 43.0N 172.0W, 50.0N 159.0W, 45.0N 154.0W, 38.0N 167.0W
VISIBILITY LESS THAN 1 NM
PART IIIB: FORECASTS
VALID: 24 HOURS STARTING 00 UTC 2018 29 AUG
24 HOUR FORECAST WINDS DIMINISHED. SEAS REMAIN ROUGH.
48 HOUR FORECAST SEAS DIMINISHED.
1.ROUGH SEAS PA0900570828/18(002)
AREA: 37.0N 123.0W, 51.0N 123.0W, 51.0N 134.0W, 37.0N 135.0W
SIGNIFICANT WAVE HEIGHT 2.5 TO 4 M
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Marine, Tropical and Tsunami Services Branch
1325 East-West Hwy, 13th floor
Communications Office
Silver Spring, MD 20910
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