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Old September 12th 18, 02:59 PM posted to uk.sci.weather
Norman Lynagh[_5_] Norman Lynagh[_5_] is offline
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First recorded activity by Weather-Banter: Jun 2016
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Default Storm sequence next week

Graham Easterling wrote:

On Wednesday, September 12, 2018 at 12:15:34 PM UTC+1, N_Cook wrote:
Impressive set of storms for UK&Eire, starting with Helene, then a
cyclogenesis enhanced monster from Canada.
Impressive winds, such that NWW3 06Z run is giving 10m sig wave
height under Helene then and 12m under the "Canadian" low,
considering its only giving 12m under florence tomorrow , prior to
Carolinas landfall


Nothing out of the ordinary on Magic Seaweed yet, which is largely
GFS based At least up 'til next Tuesday, after that date is basically
guesswork https://magicseaweed.com/Sennen-Surf-Report/4/

It does reach 6-9' at Sennen next Tuesday, but it was that sort of
height last Monday when the period was longer & therefore the swell
was more powerful. (I speak from experience!)

The most powerful swell in the forecast is on Monday when the swell
is smaller (5-7') but the period when the swell arrives in 17secs,
which makes it powerful, but still nothing out of the ordinary. Could
be a great surfing day though.

Time will tell.

Just pleased I'm not in Carolina.

Graham
Penzance


Significant wave heights up to 25 metres were measured by satellite in
the NE quadrant of Florence this morning.

--
Norman Lynagh
Tideswell, Derbyshire
303m a.s.l.