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About Surface Analysis Charts

Surface analysis are produced manually every 6 hours and depict the locations of synoptic scale high and low pressure centers with associated surface fronts and troughs for the specific analysis time. Central pressure is depicted with 3 or 4 digits. Arrows point to the 24 hour forecast positions. The term "developing" gale or storm means gale or storm conditions are expected by 24 hours.

The pressure analysis has a 4 millibar (mb) contour interval. Forecast pressure values are written with 2 digits omitting the preceding 10 or 9. As an example a high pressure center with a central pressure of 1032 mb would be 32 and low pressure of 974 mb would be 74. For intense low pressure centers below 1000 mb, the analyst may use a dashed line to depict the 1000 mb isobar. By convention, isobars less than the 1000 mb dashed line are defined with an 8 mb contour interval.

 

UK Shipping Forecast downloaded from the NOAA server downloaded 13/03/2010 21:18
262
FPUK71 EGRR 131500
AND NOW THE SHIPPING FORECAST ISSUED BY THE MET OFFICE ON BEHALF OF
THE MARITIME AND COASTGUARD AGENCY AT 1725 ON SATURDAY 13 MARCH 2010

THERE ARE WARNINGS OF GALES IN SOUTH UTSIRE AND FISHER

THE GENERAL SYNOPSIS AT MIDDAY
HIGH JUST WEST OF SHANNON 1038 EXPECTED SHANNON 1037 BY MIDDAY
TOMORROW

THE AREA FORECASTS FOR THE NEXT 24 HOURS

VIKING NORTH UTSIRE
NORTHWESTERLY 5 TO 7 DECREASING 4 OR 5 FOR A TIME ROUGH RAIN OR
SLEET THEN WINTRY SHOWERS MODERATE OR GOOD OCCASIONALLY POOR

SOUTH UTSIRE
NORTHWESTERLY 5 TO 7 OCCASIONALLY GALE 8 FOR A TIME MODERATE OR
ROUGH RAIN OR SLEET THEN WINTRY SHOWERS MODERATE OR GOOD
OCCASIONALLY POOR

FORTIES CROMARTY
NORTHWEST 5 TO 7 BECOMING VARIABLE 3 OR 4 LATER IN CROMARTY ROUGH
OCCASIONALLY MODERATE IN CROMARTY RAIN OR SQUALLY SHOWERS MODERATE
OR GOOD OCCASIONALLY POOR

FORTH TYNE DOGGER
NORTHWEST 5 OR 6 OCCASIONALLY 7 FOR A TIME IN DOGGER BECOMING
VARIBLE 3 OR 4 LATER IN FORTH AND TYNE MODERATE OCCASIONALLY ROUGH
IN DOGGER RAIN OR SQUALLY SHOWERS MODERATE OR GOOD

FISHER GERMAN BIGHT
NORTHWESTERLY 5 TO 7 INCREASING GALE 8 AT TIMES IN EAST FISHER
MODERATE OR ROUGH RAIN OR SHOWERS MODERATE OR GOOD OCCASIONALLY
POOR

HUMBER THAMES
WEST OR NORTHWEST 4 OR 5 OCCASIONALLY 6 IN HUMBER MODERATE
OCCASIONALLY ROUGH IN HUMBER SHOWERS MODERATE OR GOOD

DOVER WIGHT PORTLAND PLYMOUTH
WEST OR NORTHWEST 4 OR 5 SLIGHT OR MODERATE MAINLY FAIR MODERATE
OR GOOD

BISCAY
NORTHEASTERLY VEERING SOUTHEASTERLY LATER 4 OR 5 OCCASIONALLY 6 IN
SOUTH LATER SLIGHT OR MODERATE SHOWERS AT FIRST MODERATE OR GOOD

FITZROY
EASTERLY OR NORTHEASTERLY 4 OR 5 OCCASIONALLY 6 FOR A TIME IN
SOUTHEAST SLIGHT OR MODERATE SHOWERS AT FIRST MODERATE OR GOOD

SOLE
NORTHEAST BECOMING VARIABLE LATER 3 OR 4 SLIGHT OR MODERATE FAIR
GOOD

LUNDY FASTNET IRISH SEA
NORTH OR NORTHWEST 3 OR 4 OCCASIONALLY 5 IN IRISH SEA MAINLY
SLIGHT MAINLY FAIR GOOD

SHANNON
VARIABLE 3 OR 4 SLIGHT OR MODERATE MAINLY FAIR GOOD

ROCKALL MALIN
WEST OR NORTHWEST 5 OR 6 OCCASIONALLY 7 LATER IN ROCKALL MODERATE
OR ROUGH RAIN OR SHOWERS MODERATE OR GOOD

HEBRIDES BAILEY
NORTHWEST BACKING WEST LATER 5 TO 7 MODERATE OR ROUGH RAIN OR
SHOWERS MODERATE OR GOOD

FAIR ISLE
NORTHWESTERLY 5 TO 7 DECREASING 4 AT TIMES BECOMING VARIABLE 3 IN
WEST LATER ROUGH RAIN OR SQUALLY SHOWERS MODERATE OR GOOD

FAEROES SOUTHEAST ICELAND
NORTHERLY OR NORTHWESTERLY 5 TO 7 BECOMING VARIABLE 4 THEN
SOUTHEASTERLY 4 OR 5 LATER MODERATE OR ROUGH RAIN OR SHOWERS
WINTRY IN NORTH MODERATE OR GOOD OCCASIONALLY POOR
Current North Atlantic Chart from The Ocean Prediction Centre
File last downloaded 13/03/2010 21:22

48 hour North Atlantic Chart from The Ocean Prediction Centre
File last downloaded 13/03/2010 21:18

96 hour North Atlantic Chart from The Ocean Prediction Centre
File last downloaded 13/03/2010 21:19