MARINE WEATHER BULLETIN FOR FORTIES
Area from 40S to 55S, western boundary from 40S 163E to 45S 160E then to 55S 160E, eastern boundary 170W.
Issued by Meteorological Service of New Zealand,
Wellington issued at 182021UTC Valid until 191200UTC.
Part 1 - WARNINGS
WARNINGS IN FORCE: 411
Part 2 - Situation analysis at 181800UTC:
Front F1 40S 175E 49S 179E 55S 175W, moving east 10kt.
Low L1 986hPa near 58S 179W, moving eastsoutheast 10kt.
Low L2 992hPa near 41S 165E, moving northnortheast 5kt.
Part 3 - Forecast:
Refer to latest warnings.
Within 660 nautical miles east of F1: Northwest 30kt, areas of fog, with poor visibility in rain.
Within 840 nautical miles of L1 in western quadrant: Clockwise 30kt at times, areas of poor visibility in rain.
Within 420 nautical miles of L1 in sector from northwest through northeast to southwest: Clockwise 30kt, areas of poor visibility in rain.
Within 720 nautical miles of L2 in sector from southeast through southwest to northeast: Clockwise 30kt, with gales as in warning 411, areas of poor visibility in rain, areas of heavy swell.
Within 480 nautical miles of L2 in eastern quadrant: Areas of poor visibility in rain, areas of heavy swell.
Outlook for the following 72 hours:
In a moderate area west of Fiordland: southerly quarter 30kt to gale. Front about 41S 178W 46S 177W 51S 173W, moving east. In a moderate area east of front: northerly quarter 30kt at times. Low expected near 41S 178E by 200000UTC, moving south. In a broad sector from southeast through southwest to northeast about low centre: clockwise 30kt to gale at times.
MARINE WEATHER BULLETIN FOR SUBTROPIC
Area from 25S to 40S, western boundary from 40S 163E to 29S 170E then to 25S 170E, eastern boundary 170W.
Issued by Meteorological Service of New Zealand,
Wellington issued at 182021UTC Valid until 191200UTC.
Part 1 - WARNINGS
WARNINGS IN FORCE: 411
Part 2 - Situation analysis at 181800UTC:
Front F1 24S 168E 32S 172E 40S 175E, moving east 15kt.
Low L1 992hPa near 41S 165E, moving northnortheast 5kt.
Part 3 - Forecast:
Refer to latest warnings.
Within 480 nautical miles east of F1: Northwest 30kt, areas of poor visibility in rain with possible thunderstorms.
Within 720 nautical miles of L1 in sector from southeast through southwest to northeast: Clockwise 30kt, with gales as in warning 411, areas of poor visibility in rain, areas of heavy swell.
Within 480 nautical miles of L1 in eastern quadrant: Areas of poor visibility in rain, areas of heavy swell.
Outlook for the following 72 hours:
West of the North Island: Heavy westerly quarter swell, easing by 211200UTC. In a moderate area west of Cape Egmont: southeast quarter 30kt to gale for a time between 200000UTC and 211200UTC.
MARINE WEATHER BULLETIN FOR SOUTHERN
Area from 55S to southern ice edge between 160E and 120W.
Issued by Meteorological Service of New Zealand,
Wellington issued at 182021UTC Valid until 191200UTC.
Part 1 - WARNINGS
WARNINGS IN FORCE: 407 408 410 412 413 414
Part 2 - Situation analysis at 181800UTC:
Area A1 bounded by 67S 172E 63S 150W 64S 120W 71S 120W 70S 170E 67S 172E, slow moving.
Front F1 52S 154W 57S 165W 59S 176W, moving eastsoutheast 25kt.
Ridge R1 55S 156W 61S 158W 67S 168W, moving east 35kt.
Low L1 986hPa near 58S 179W, moving eastsoutheast 10kt.
Area A2 bounded by 61S 159E 62S 167E 70S 178E 70S 161E 61S 159E, moving south 10kt.
Part 3 - Forecast:
Refer to latest warnings.
Within A1: Heavy ice accretion as in warnings 412 413.
Within 600 nautical miles northwest of F1: Northwest quarter 25kt, areas of fog, with poor visibility in precipitation.
Within 1380 nautical miles east of R1: Southwest quarter 30kt, with gales as in warnings 407 408, areas of poor visibility in rain, areas of heavy westerly quarter swell.
Within 240 nautical miles west of R1: Areas of heavy westerly swell.
Within 840 nautical miles of L1 in western quadrant: Clockwise 30kt at times, with gales as in warning 410, areas of poor visibility in rain.
Within 420 nautical miles of L1 in sector from northwest through northeast to southwest: Clockwise 30kt, areas of poor visibility in rain.
Within A2: Heavy ice accretion as in warning 414.
Southern Ice Edge between 160E and 120W issued 18 Apr 2026 UTC
65.0S,160.0E 68.6S,170.0E 68.8S,180.0
68.1S,170.0W 69.1S,160.0W 69.0S,150.0W
69.5S,140.0W 68.5S,130.0W 67.7S,120.0W
Ice edge not for navigational purposes.
MARINE WEATHER BULLETIN FOR PACIFIC
Area from 25S to 55S and 170W to 120W.
Issued by Meteorological Service of New Zealand,
Wellington issued at 182021UTC Valid until 191200UTC.
Part 1 - WARNINGS
WARNINGS IN FORCE: 409
Part 2 - Situation analysis at 181800UTC:
Trough T1 21S 130W 30S 127W 40S 121W, slow moving.
Front F1 44S 146W 47S 140W 55S 123W, moving eastnortheast 20kt.
Ridge R1 45S 154W 51S 154W 55S 156W, moving east 30kt.
Front F2 24S 155W 30S 154W 37S 154W, moving east 10kt.
Low L1 1000hPa near 34S 157W, moving southsouthwest 15kt.
Part 3 - Forecast:
Refer to latest warnings.
Within 300 nautical miles of T1: Poor visibility in rain with possible thunderstorms.
Within 900 nautical miles east of F1: Northwest 30kt at times, areas of poor visibility in rain.
Within 600 nautical miles southwest of F1 from 47S 140W to 55S 123W: Southwest 30kt at times.
West of R1: Northwest 30kt, areas of fog, with poor visibility in rain.
Within 300 nautical miles east of R1 from 51S 154W to 55S 156W: Heavy westerly swell developing by 190600UTC.
Within 180 nautical miles east of F2: Northwest 25kt.
Within 480 nautical miles of L1 in sector from east through south to northwest: Clockwise 30kt, with gales as in warning 409, areas of poor visibility in rain.
Within 240 nautical miles of L1 in sector from northwest through northeast to east: Clockwise 25kt.
Outlook for the following 72 hours:
Ridge 47S 170W 49S 144W 45S 120W, moving east. South of ridge: westerly quarter 30kt to gale at times and areas of westerly quarter swell. Low developing near 52S 159W by 210000UTC, moving east. In a small sector from southeast through southwest to northeast about low centre: 30kt to gale. Front expected near 45S 167W 47S 169W 49S 172W by 220000UTC, moving south. In a small area south of front: northeast quarter 30kt to gale, easing by 221200UTC.
MARINE WEATHER BULLETIN FOR ISLANDS AREA
EQUATOR TO 25S BETWEEN 160E AND 120W.
ISSUED BY FIJI METEOROLOGICAL SERVICE Apr 182000 UTC.
PART 1 : WARNING NIL.
PARTS 2 AND 3 : SYNOPSIS AND FORECAST VALID UNTIL Apr 191800 UTC.
LOW PRESSURE L CENTER [1009HPA] WAS ANALYSED NEAR 18.1S 169.0E AT
181800UTC. POSITION POOR. SLOW MOVING.
TROUGH T1 17S 160E TO L TO 25S 175E SLOW MOVING. POOR VISIBILITY IN
OCCASIONAL SHOWERS, HEAVY AT TIMES AND FEW THUNDERSTORMS WITHIN 150
NAUTICAL MILES OF T1.
TROUGH T2 FM L TO 16S 176E SLOW MOVING. POOR VISIBILITY IN OCCASIONAL
SHOWERS AND ISOLATED THUNDERSTORMS WITHIN 120 NAUTICAL MILES OF T2.
TROUGH T3 11S 177E 10S 175W 11S 169W SLOW MOVING. POOR VISIBILITY IN
OCCASIONAL SHOWERS AND ISOLATED THUNDERSTORMS WITHIN 120 NAUTICAL
MILES OF T3.
TROUGH T4 17S 167W 21S 162W 25S 158W SLOW MOVING. POOR VISIBILITY IN
OCCASIONAL SHOWERS AND ISOLATED THUNDERSTORMS WITHIN 140 NAUTICAL
MILES OF T4.
TROUGH T5 10S 159W 02S 150W SLOW MOVING. POOR VISIBILITY IN
OCCASIONAL SHOWERS, HEAVY AT TIMES AND FEW THUNDERSTORMS WITHIN 150
NAUTICAL MILES OF T5.
TROUGH T6 18S 133W 25S 127W SLOW MOVING. POOR VISIBILITY IN
OCCASIONAL SHOWERS AND ISOLATED THUNDERSTORMS WITHIN 120 NAUTICAL
MILES OF T6.