Two major hurricane-force storm lows are forecast to develop and move across the North Atlantic during the next 72 hours producing winds up to 80 knots and significant wave heights to 17 meters (over 55 feet)! This will be a significant challenge to shipping between ports in Northern Europe and the USEC ports.
Rapidly deepening storm south of Newfoundland 12Z 12 Feb 2020:
By 12Z 13th Surface forecast shows a deepening storm of 944 mb with winds to 80 knots over the main shipping lanes. In addition a second storm is expected to develop along the US East Coast.
Surface Forecast 12Z 13 Feb 2020
NOAA OPC 12z 13 Feb Significant wave forecasts showing waves to 15.5 meters (over 50 feet)!
NOAA OPC Significant Wave Height Forecast
NOAA OPC Surface forecast for 12Z 14th Feb shows the deep 936 mb low becoming semi-stationary southwest of Iceland while a second rapidly deepening low is moving northeastward well east of Newfoundland deepening rapidly to 924 mb by 15th.
NOAA OPC Surface Forecast 12Z 14 Feb 2020
By 12Z 14th significant wave heights are forecast to 17 meters (over 55 feet) west of Ireland.
NOAA OPC Significant wave height forecast 12Z 14 Feb 2020
Learn more about these winter hurricane storms
NOAA OPC Surface Forecast 12Z 28 Jan 2020
A rapidly deepening storm low is forecast over the east-central North Pacific during the next 48 hours then moving northeastward over the Gulf of Alaska. This storm will produce storm to hurricane force winds (50-65 knots) and seas building to 14 meters (45 feet).
NOAA OPC 12Z 29 Jan Surface Forecast
NOAA OPC 48 hr Significant Wave Height Forecast
An intense winter storm over the eastern North Atlantic northwest of Ireland has been producing hurricane-force winds with significant wave heights to 16 meters (52 feet) west of Ireland.
NOAA OPC Significant Wave Height Analysis 12Z 13 Jan 2020feet).
NOAA OPC Surface Analysis Jan 13, 2020 1200Z
The National Transportation Safety Board (NTSB) has determined that the probable cause of the capsizing and sinking of the Dredge200 and the R.E. Pierson 2 in December 2, 2018 was the decision by the tow captain and owner to attempt a transit in forecasted wind and waves that exceeded their original plan for the voyage. A workboat and barge sank, resulting in nearly $2 million in losses.
Although the captain and owner had a discussion regarding a plan for the tow configuration and set a limit of 4-foot seas for the voyage, they proceeded through the canal and into Cape Cod Bay despite knowing that the weather forecast called for seas that exceeded the limits they established for the voyage.
NOAA Surface Analysis Dec. 2, 2018 1800 UTC
Read the entire NTSB report “Capsizing and Sinking of Barge Dredge200 and Loss of Workboat R.E. Pierson 2 Pushed by Tugboat Big Jake”
NOAA OPC Surface Analysis
A rapidly deepening storm low over the western North Pacific east of Japan is forecast to reach 944 mb with winds of 55-75 knots and seas building to 58 feet (17.7 meters) over the next 12-24 hours.
West Pacific Hi Res Satellite Image
NOAA OPC 48 Hour Surface Forecast
NOAA 48 Hour Significant Wave Height Forecast
Tropical Storm Phanfone Satellite image
Tropical Storm Phanfone over the western North Pacific east of the Philippines is tracking westward at 14 knots with max winds about 55 knots.
Conditions favor additional strengthening with max winds reaching near 70 knots within the next 12 hours with landfall over the Philippines expected within 18-24 hours.
JTWC forecast Track
NOAA OPC 48 hour 500 mb forecast chart
A strong 500 mb jet is setting up west to east across the North Atlantic over the next couple of days near 40N latitude. This will favor strong storm development across the main North Atlantic shipping lanes.
NOAA 48 hour Surface Forecast
Expecting storm to hurricane-force winds and significant wave heights to 16 meters (52 feet) moving eastward from the central North Atlantic towards the Bay of Biscay which will present problems routing ships between North Europe and Mediterranean ports to US East Coast and Gulf ports.
Lean more about using the 500 mb chart at sea.
NOAA OPC 48 hour Significant Wave Height forecast
72 hour Surface Forecast
NOAA OPC 72 hour Surface Forecast
72 hour Wave Height
NOAA OPC 72 Hour Significant Wave Height Forecast
The 500mb forecast chart is an excellent tool for mariners to estimate where to anticipate the heaviest sea and swell conditions as well as a guide to the expected surface storm tracks and intensities. The closer the height contours on the 500mb chart, the faster the upper level wind flow, the stronger the temperature contrasts and the more active is the surface weather below. The development and strengthening of surface lows and the associated bad weather most often occurs on the eastern side of 500mb troughs while surface high pressure and good weather is associated with the western side of these troughs. Without even looking at the surface pressure charts, a mariner can estimate what areas might be best to avoid.
Today’s 500 mb chart of the North Pacific is a good example.
NOAA OPC 500 mb Analysis Dec
Note the actual significant wave height analysis
Click here to read more about using the 500 mb chart at sea.
NOAA OPC Surface Analysis 18Z 8 Dec 2019
Earlier today a hurricane-force storm system west and north of of Ireland was producing storm to hurricane force winds and seas to 15 meters (49 ft).
This system will trigger gale to storm force winds over the Gulf of Lion Monday into Tuesday.
Wind Forecast Tuesday morning for Gulf of Lion – Image credit buoyweather.com
NOAA OPC 00Z 9th Dec Surface Analysis
A rapidly deepening storm low over the central North Pacific near 40 N Latitude will result in winds of 50-65 knots and seas building to 45 feet (nearly 14 meters) south and southwest of the center over the next 24-48 hours. This system will create high winds and waves in the main North Pacific shipping lanes.
NOAA OPC 48 hour surface forecast
NOAA OPC 48 hour Wave Height Forecast