High seas forecast

Issued by the Met Office at

For the period until

Storm warnings

At 111200UTC, developing Atlantic low moving steadily northeastwards, expected 61 north 05 west 962 by 121200UTC. Westerly or southwesterly winds will reach storm force 10 at times in the far northeast of sea area shannon until 112100UTC. Westerly or southwesterly winds will also reach storm force 10 or violent storm force 11 for a time in the eastern half of sea area rockall until 112300UTC. Northerly winds will also reach storm force 10 at times between 10 west and 15 west in sea area Southeast Iceland throughout the period. Also, southerly or southeasterly winds will reach storm force 10 between 04 west and 05 east in Norwegian Basin throughout the period, and also violent storm force 11 to the south of 63 north in Norwegian Basin until 121400UTC. Finally, northerly winds will reach storm force 10 at times in the far south of sea area north Iceland just east of Iceland after 121100UTC

General synopsis

At 111200UTC, developing Atlantic low moving steadily northeastwards, expected 61 north 05 west 962 by 121200UTC. Developing Atlantic low moving rather quickly eastwards, expected 46 north 19 west 995 by same time. Lows 57 north 18 west 974, 61 north 13 west 972 and 72 north 02 west 1003 all losing their identities

Area forecasts for the next 24 hours

Sole

Southerly or southwesterly 6 to gale 8 decreasing 4 to 6. Rough or very rough. Rain or showers. Moderate or good.

Shannon

Southwesterly 7 to severe gale 9, occasionally storm 10 at first in northeast, then decreasing 5 to 7, becoming cyclonic 4 to 6 later. Very rough, occasionally high at first in northeast. Showers. Moderate or poor.

Rockall

Cyclonic 6 to gale 8, becoming southwesterly severe gale 9 to violent storm 11 for a time in east. Rough or very rough, occasionally high. Rain then showers. Moderate or poor.

Bailey

Cyclonic becoming northwest 6 to gale 8, increasing severe gale 9 at times. Rough or very rough, becoming high. Rain. Moderate or poor.

Faeroes

Cyclonic 6 to gale 8, occasionally 5 at first and severe gale 9 later. Rough or very rough, becoming very rough or high later. Rain. Good, occasionally poor.

Southeast Iceland

Northeasterly backing northerly 7 to severe gale 9, increasing storm 10 at times. Rough or very rough becoming very rough or high. Rain or snow. Moderate to very poor.

East Northern Section

Northerly or northwesterly 6 to gale 8, occasionally severe gale 9 until later in east. Rough or very rough, becoming high for a time in far east. Rain or showers in southeast, sleet or snow showers in northwest. Moderate or good, becoming poor at times, but occasionally very poor in northwest.

West Northern Section

In eastern half of the area

Northerly or northwesterly 6 to gale 8, decreasing 4 or 5 later. Rough or very rough, becoming moderate or rough in north. Sleet or snow showers. Moderate or good, occasionally very poor. Light icing at first in far north.

In western half of the area

Northerly or northeasterly 4 to 6 becoming variable 2 to 4, then becoming southeasterly 5 to 7 later in south. Very rough at first in southeast, otherwise moderate or rough. Snow showers then fair, then rain or snow later in south. Good, occasionally very poor at first, then becoming moderate to very poor later in south.

East Central Section

In area to the north of 48 north

Cyclonic 4 to 6, becoming northwesterly 5 to 7 later. Rough or very rough. Showers, becoming fair later in west. Moderate or good.

In area to the south of 48 north

Westerly or southwesterly 5 or 6 becoming cyclonic 4 to 6 then northerly or northwesterly 6 to gale 8. Rough or very rough. Rain or showers, thundery at times. Moderate or good, occasionally poor.

West Central Section

In southeast

Cyclonic 4 to 6 becoming northerly 5 to 7, occasionally gale 8 at first in far south, backing northwesterly 3 to 5 later. Rough or very rough. Thundery rain at first in far south, otherwise showers, becoming fair later. Moderate or good, occasionally poor at first in far south.

In southwest

Northwesterly mainly 4 to 6, but 7 to severe gale 9 at first in far south, backing westerly 3 or 4, then southerly 5 to 7 later. High at first in far south, otherwise rough or very rough. Rain or showers, but becoming fair for a time. Moderate or good, occasionally poor at first in far south.

In northeast

Northerly 5 to 7, backing northwesterly 3 to 5 later. Very rough becoming rough. Wintry showers, becoming fair later. Good, occasionally poor at first.

In northwest

Northeasterly 4 to 6 becoming variable 2 to 4, then southerly or southeasterly 4 to 6 later. Rough. Wintry showers then fair, then rain later. Good, occasionally poor.

Denmark Strait

Northerly or northeasterly 5 to 7, occasionally gale 8 in east, but becoming variable 2 to 4 within 100 miles of the greenland coast to the south of 69 north. Moderate or rough, becoming rough or very rough later in far east. Snow showers, mainly in east and south. Good, occasionally very poor in east and south. Light or moderate icing, with temperatures ms02 to ms05, but severe icing developing later in east near the ice, with temperatures ms06 to ms09.

North Iceland

Cyclonic mainly northerly or northeasterly, 5 to 7 in north but 7 to severe gale 9 in south, occasionally storm 10 later in far south just east of Iceland. Moderate at first in north, otherwise rough or very rough, but becoming high in south. Snow showers in north and west, then rain or snow in southeast spreading northwestwards, fog patches in far southeast, moderate or good, occasionally very poor. Light or moderate icing in northwestern half of the area, with temperatures ms02 to ms05, but severe icing developing later near the ice, with temperatures ms06 to ms09.

Norwegian Basin

In area to the west of 05 east

Southerly or southeasterly gale 8 to storm 10, occasionally violent storm 11 in southeast, becoming cyclonic 6 to gale 8 later in far west. High or very high. Rain. Poor.

In area to the east of 05 east

Southeasterly 6 to gale 8, occasionally severe gale 9 in far northeast. Rough or very rough. Mainly fair. Moderate or good.

Outlook for following 24 hours

Violent storm force winds expected in West Central Section. Storm force winds expected in Southeast Iceland, West Northern Section, north Iceland and Norwegian Basin. Severe gales expected in Faeroes and Denmark Strait, but with a risk of storm force winds later in far east of Denmark Strait. Gales expected in Bailey, East Northern Section and East Central Section. Risk of gales in west Sole.

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.

Shannon, Rockall, Southeast Iceland, North Iceland and Norwegian Basin.

Issued:

At 111200UTC, developing Atlantic low moving steadily northeastwards, expected 61 north 05 west 962 by 121200UTC. Westerly or southwesterly winds will reach storm force 10 at times in the far northeast of sea area Shannon until 112100UTC. Westerly or southwesterly winds will also reach storm force 10 or violent storm force 11 for a time in the eastern half of sea area Rockall until 112300UTC. Northerly winds will also reach storm force 10 at times between 10 west and 15 west in sea area Southeast Iceland throughout the period. Also, southerly or southeasterly winds will reach storm force 10 between 04 west and 05 east in Norwegian Basin throughout the period, and also violent storm force 11 to the south of 63 north in Norwegian Basin until 121400UTC. Finally, northerly winds will reach storm force 10 at times in the far south of sea area north Iceland just east of Iceland after 121100UTC.