Met Office

High seas forecast

Issued at 0800 UTC on Saturday 15 December 2018
by the Met Office, Exeter, United Kingdom
for the period 0800 UTC Saturday 15 December until 0800 UTC Sunday 16 December 2018

Storm warnings

At 150000UTC, low 46 north 19 west 995 expected 57 north 09 west 975 by 160000UTC. Westerly or southwesterly winds will reach storm force 10 at times in sole until 151300UTC, and in shannon until 151500UTC. Westerly winds will also reach violent storm force 11 at times until 151100UTC in sole, and in shannon until 151400UTC. Southeasterly winds will also reach storm force 10 at times in the south of Norwegian Basin after 160000UTC. Low 59 north 28 west 958 expected 59 north 27 west 965 by same time. Northeasterly winds will reach storm force 10 at times north of 68 north in Denmark Strait after 151200UTC, and may reach violent storm force 11 at times between 151500UTC and 160300UTC

General synopsis

At 150000UTC, low 46 north 19 west 995 expected 57 north 09 west 975 by 160000UTC. Low 59 north 28 west 958 expected 59 north 27 west 965 by same time. New low expected 55 north 04 west 979 by that time. New high expected 77 north 16 west 1014 by 160000UTC. High 62 north 11 east 1038 dissipating

Area forecasts for the next 24 hours

Sole

Southeast veering southwest, gale 8 to storm 10, increasing violent storm 11 for a time, then decreasing 5 to 7 later. Very rough or high. Rain or squally showers. Moderate or poor.

Shannon

Cyclonic 7, increasing severe gale 9 to violent storm 11, becoming southwest 5 to 7 later. High, occasionally very high in southeast, becoming very rough later. Rain or squally showers. Moderate or poor.

Rockall

South, becoming cyclonic, 6 to gale 8, increasing severe gale 9 at times. Very rough or high. Good, occasionally poor. Moderate or poor.

Bailey

South becoming cyclonic, 5 to 7, occasionally gale 8 at first. Very rough or high. Rain. Good, occasionally poor.

Faeroes

Southeast 6 to gale 8, occasionally severe gale 9. Very rough or high. Rain. Good, occasionally poor.

Southeast Iceland

Southeast 6 to gale 8, occasionally severe gale 9. Very rough or high. Rain. Good, occasionally poor.

East Northern Section

In north

Easterly or southeasterly, 5 to 7, increasing gale 8 at times. High, becoming rough or very rough later. Rain or squally showers. Moderate or good, occasionally poor.

In south

Southerly or southwesterly 6 to gale 8, occasionally severe gale 9 at first, becoming cyclonic 5 or 6 later in north. Very rough or high. Rain or squally showers. Moderate or good, occasionally poor.

West Northern Section

Cyclonic, mainly northeasterly in north and westerly in south, 6 to gale 8, increasing severe gale 9 at times. Very rough or high, occasionally rough later in southwest. Occasional rain or showers, occasional sleet or snow in far northwest. Moderate or good, occasionally poor, becoming moderate or poor later in far northwest.

East Central Section

Cyclonic 7 to severe gale 9 at first in southeast, otherwise westerly or southwesterly 6 or 7, increasing gale 8 at times. Very rough or high. Rain at first in east, otherwise squally showers, occasionally wintry in northwest. Moderate or poor at first in east, otherwise good, occasionally poor.

West Central Section

In north

Westerly or northwesterly 6 to gale 8, becoming variable 3 or 4 later in west. Very rough or high. Rain or showers. Moderate or good, occasionally poor.

In south

Westerly 6 to gale 8, becoming cyclonic 7 to severe gale 9 later in west. Very rough or high. Rain or showers. Moderate or good, occasionally poor.

Denmark Strait

Northeasterly 5 to 7, increasing gale 8 to storm 10, then occasionally violent storm 11 for a time north of 68 north. Rough or very rough, becoming high. Occasional rain, sleet or snow. Moderate or poor, occasionally very poor, but occasionally good near Iceland. Light to moderate icing within 150 miles of ice edge with temperatures ms02 to ms05, with severe icing developing within 50 miles of the ice edge north of 68 north after 151200utc, with temperatures ms08 to ms11.

North Iceland

In north

Southwesterly 5 or 6 in southeast, otherwise northeasterly 6 to gale 8, occasionally severe gale 9 in far southwest. Rough or very rough. Rain in southeast, snow in northwest. Moderate or poor, occasionally very poor, but occasionally good in southeast. Light to moderate icing within 100 miles of ice edge with temperatures ms02 to ms05, with severe icing developing within 50 miles of the ice edge after 151000utc, with temperatures ms08 to ms11.

In south

Southeasterly 6 to gale 8, backing northeasterly 7 to severe gale 9 in far northwest, then decreasing 5 later in far northeast. Rough or very rough, becoming high in southeast, and occasionally high later in far northwest. Occasional rain, turning to snow at times in northwest. Moderate or good, occasionally poor, but occasionally very poor in northwest. Light to moderate icing in far northwest with temperatures ms02 to ms05. Severe icing developing near the ice edge in northwest after 151500utc, with temperatures ms07 to ms10.

Norwegian Basin

East of 05 east, southerly or southeasterly 4 or 5, increasing 6 at times. Moderate or rough. Mainly fair. Mainly good.

In rest of area

Southerly or southeasterly 7 to severe gale 9, occasionally storm 10 later in south. Very rough or high, occasionally very high later in south. Showers then rain. Good, occasionally poor.

Outlook for following 24 hours

Storms expected in East Central Section, West Central Section, Denmark Strait and Norwegian Basin, with severe gales in all other areas except Southeast Iceland where gales are expected.

Unscheduled storm warnings are broadcast via Safetynet and in bulletin WONT54 EGRR available via some internet and ftpmail outlets

Storm warnings

Storm warnings, issued by the Met Office, on behalf of the Maritime and Coastguard Agency.

Sole, Shannon, Denmark Strait and Norwegian Basin.

Issued: 0800 UTC on Saturday 15 December 2018

At 150000UTC, low 46 north 19 west 995 expected 57 north 09 west 975 by 160000UTC. Westerly or southwesterly winds will reach storm force 10 at times in Sole until 151300UTC, and in Shannon until 151500UTC. Westerly winds will also reach violent storm force 11 at times until 151100UTC in Sole, and in Shannon until 151400UTC. Southeasterly winds will also reach storm force 10 at times in the south of Norwegian Basin after 160000UTC. Low 59 north 28 west 958 expected 59 north 27 west 965 by same time. Northeasterly winds will reach storm force 10 at times north of 68 north in Denmark Strait after 151200UTC, and May reach violent storm force 11 at times between 151500UTC and 160300UTC.