January 19, 2016

Two Pairs of Hurricane Force Storms

The Ocean Prediction Center of the United States' National Weather Service highlighted this unusual situation on their Twitter feed yesterday:

Four hurricane force lows in the two ocean basins within the next 24 hours!

Let's see how that prediction has worked out. Here's the OPC's current synopsis for the North Pacific:

and here's the equivalent for the North Atlantic:

There's obviously two hurricane force systems in the Pacific, but the OPC "high seas" bulletin for the Atlantic has this to say this morning:

HURRICANE FORCE WIND WARNING…

LOW 56N52W 982 MB MOVING NW 10 KT. FRONT EXTENDS FROM LOW CENTER TO 57N42W TO 56N35W.
FROM 58N TO 60N BETWEEN 42W AND 49W. WINDS 50 TO 65 KT. SEAS 21 TO 28 FT.
ELSEWHERE FROM 58N TO 60N BETWEEN 37W AND 52W WINDS 40 TO 50 KT. SEAS 19 TO 24 FT.
ALSO WITHIN 240 NM NW AND N OF THE FRONT WINDS 25 TO 40 KT. SEAS 12 TO 20 FT.

24 HOUR FORECAST LOW DISSIPATED. N OF A FRONT TO EXTEND FROM 60N44W TO 59N35W WINDS 25 TO 35 KT. SEAS 11 TO 18 FT.

48 HOUR FORECAST CONDITIONS DIMINISHED.

and also this:

HURRICANE FORCE WIND WARNING…

24 HOUR FORECAST NEW LOW 41N45W 990 MB. FRONT TO EXTEND FROM LOW CENTER TO 37N59W TO 36N67W. WITHIN 120 NM SE OF THE FRONT. WINDS 40 TO 50 KT. SEAS 18 TO 28 FT.
ELSEWHERE OVER FORECAST WATERS WITHIN 600 NM SE…1500 NM SW…AND 660 NM NW QUADRANTS. WINDS 25 TO 40 KT. SEAS 12 TO 24 FT.

48 HOUR FORECAST LOW 57N36W 956 MB. BETWEEN 60 NM AND 120 NM N AND S QUADRANTS WINDS 50 TO 65 KT. SEAS 17 TO 26 FT.
ELSEWHERE WITHIN 180 NM N AND S QUADRANTS WINDS 40 TO 50 KT. SEAS 16 TO 20 FT. ALSO WITHIN 300 NM OF CENTER…EXCEPT 180 NM SW QUADRANT WINDS 25 TO 40 KT. SEAS 15 TO 18 FT.

Two separate hurricane force systems then, but whether they'll be simultaneously producing winds of that strength remains to be seen. Nonetheless, here is Magic Seaweed's surf forecast for the North Atlantic on Thursday afternoon:

One large swell heading for Southern Greenland, and another one heading straight for Soggy South West England! Meanwhile over in the Pacific surfers in Alaska have this to look forward too later in the week:

As far as I can ascertain Magic Seaweed don't produce a surf forecast for Greenland!

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Comments on Two Pairs of Hurricane Force Storms »

January 19, 2016

Jim @ 6:19 pm

Heading on to land just for a change, the NWS home page currently reads as follows:

Potential major winter storm for the Eastern U.S. later this week

NWS forecasters are monitoring the possibility of a major winter storm affecting the Northeast later this week, including the possibility of heavy snow for the urban corridor extending from Washington, DC, to New York and Boston Friday into Sunday. Based on the anticipated storm track, as much as 1 to 2 feet of snow is possible near and northwest of I-95. Coastal flooding is also likely.

The NWS's Weather Prediction Center chart for the United States on Friday looks like this:

Note that it shows both solid and liquid precipitation on both east and west coasts.

January 20, 2016

Jim @ 6:28 pm

Back out at sea, here's the OPC's 12:00 UTC chart for today:

The low just north of Newfoundland is down to 953 hPa central pressure, and not too far away there are "developing hurricane force" winds once again. Here's the OPC's current forecast:

HURRICANE FORCE WIND WARNING…

LOW 41N52W 986 MB MOVING NE 40 KT AND RAPIDLY INTENSIFYING. WITHIN 240 NM S AND 360 NM SW QUADRANTS WINDS 40 TO 50 KT. SEAS 22 TO 29 FT.
ALSO OVER FORECAST WATERS FROM 31N TO 41N E OF 60W AND WITHIN 780 NM W QUADRANT WINDS 25 TO 40 KT. SEAS 11 TO 24 FT.

24 HOUR FORECAST LOW 48N34W 967 MB JUST E OF AREA. FROM 43N TO 47N E OF 38W WINDS 50 TO 65 KT. SEAS 17 TO 34 FT. ALSO WITHIN 180 NM NW AND 300 NM SW QUADRANTS WINDS 35 TO 50 KT. SEAS 14 TO 28 FT…HIGHEST IN SW QUADRANT.
ELSEWHERE FROM 36N TO 47N E OF 60W WINDS 25 TO 40 KT. SEAS 12 TO 25 FT.

January 21, 2016

Jim @ 10:02 am

In their forecast this morning the NWS Ocean Prediction Center have two warnings for hurricane force winds in the North Atlantic once again:

HURRICANE FORCE WIND WARNING…
LOW 45N41W 980 MB MOVING NE 30 KT. WITHIN 480 NM S AND SW QUADRANTS WINDS 40 TO 50 KT. SEAS 17 TO 31 FT. ALSO FROM 32N TO 46N BETWEEN 35W AND 60W WINDS 25 TO 40 KT. SEAS 12 TO 25 FT.
12 HOUR FORECAST LOW 48N33W 969 MB JUST E OF AREA. WITHIN 300 NM S QUADRANT WINDS 50 TO 65 KT. SEAS 18 TO 34 FT.
24 HOUR FORECAST LOW E OF AREA 54N27W 969 MB WITH CONDITIONS MOVED E OF AREA.

HURRICANE FORCE WIND WARNING…
24 HOUR FORECAST NEW LOW 39N55W 998 MB. WITHIN 480 NM SW QUADRANT WINDS 25 TO 40 KT. SEAS 12 TO 16 FT.
42 HOUR FORECAST LOW 43N40W 976 MB. WITHIN 300 NM S AND SW QUARANTS WINDS 50 TO 65 KT. SEAS 13 TO 20 FT.
48 HOUR FORECAST LOW 42N37W 969 MB. WITHIN 240 NM S AND SW QUADRANTS WINDS 45 TO 60 KT. SEAS 13 TO 18 FT. ALSO FROM 40N TO 49N E OF 42W WINDS 12 TO 16 FT.

Here's their Atlantic forecast for two days time:

which amongst many other things suggests that the Davis Strait to the west of Greenland will soon be experiencing much colder temperatures than of late. Here's the resulting Magic Seaweed North Atlantic surf forecast for today:

Let's not forget those storms still spinning in the North Pacific either. Here is today's MSW surf forecast for Alaska:

Finally, for the moment at least, here is the current NWS weather forecast for the United States' eastern seaboard:


A potentially crippling winter storm is anticipated for portions of the mid-Atlantic Friday into early Saturday.

Their Washingtom DC branch has issued a blizzard watch:

URGENT – WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
526 AM EST THU JAN 21 2016

BLIZZARD WATCH REMAINS IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE SATURDAY NIGHT…

HAZARD TYPES…HEAVY SNOW AND WIND WITH BLOWING AND DRIFTING SNOW FRIDAY AFTERNOON THROUGH SATURDAY NIGHT. SLEET MAY MIX WITH THE SNOW FRIDAY NIGHT INTO SATURDAY MORNING EAST OF INTERSTATE 95, BEFORE CHANGING BACK TO ALL SNOW BY SATURDAY AFTERNOON.

ACCUMULATIONS…SNOW ACCUMULATION OF 18 TO 24 INCHES.

TIMING…HEAVY SNOW FRIDAY AFTERNOON THROUGH SATURDAY NIGHT. CONDITIONS ARE EXPECTED TO DETERIORATE FRIDAY AFTERNOON WITH THE HEAVIEST SNOW… STRONGEST WINDS…AND POTENTIAL LIFE THREATENING CONDITIONS EXPECTED FRIDAY NIGHT THROUGH SATURDAY.

IMPACTS…HEAVY SNOW AND BLOWING SNOW WILL CAUSE DANGEROUS CONDITIONS AND WILL BE A THREAT TO LIFE AND PROPERTY. TRAVEL IS EXPECTED TO BE SEVERELY LIMITED IF NOT IMPOSSIBLE DURING THE HEIGHT OF THE STORM FRIDAY NIGHT AND SATURDAY. VISIBILITY WILL BE REDUCED TO NEAR ZERO AT TIMES IN WHITEOUT CONDITIONS.

WINDS…NORTHEAST 25 TO 35 MPH WITH GUSTS UP TO 55 MPH.

TEMPERATURES…IN THE UPPER 20S.

January 24, 2016

Jim @ 11:11 am

Here's the latest synoptic chart from the Ocean Prediction Center for the North-East Pacific:

Hurricane force winds around a 956 hPa central pressure low, about which the OPC have this to say:

Pacific hurricane force low continues to intensify, altimeter passes detect significant wave heights > 30 ft

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