Round The Island Race - 2018 Weather Briefing

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Weather Briefing - Friday 6th July, 2018 at 18:00hrs
Race Day - Saturday 7th July, 2017 at 06:30hrs

As Official Technical Partner, Raymarine will once again team with leading marine meteorologist, Simon Rowell, to deliver the all-important pre-race weather strategy using the high precision Theyr weather and ocean forecasting app via Raymarine’s Axiom multifunction navigation system and powerful LightHouse 3 operating software.

LIVE WEATHER BRIEFING

The 2018 Round The Island Race Weather Briefing begins at 6pm on Friday 6th July, 2018.

Daily Weather Updates

General Situation (all times in BST)

Today there is a small but unstable low centred over NE France, so the breeze should be a moderate ENE gradually easing & veering ESE through the day. Once it cools down it should back left again & ease overnight, NE 8-12 kts. There is a good chance of showers in the morning, clearing into a hot & sunny afternoon. During Tuesday this low should expand into the Western Approaches, with an unstable trough along the N coast of France, bringing moderate ENE veering E & ESE winds. It will be generally hot & sunny but with a chance of afternoon squalls along the coast. Wednesday is looking very light & changeable so far – there won’t be much pressure gradient and the breeze will be light & variable. This could be a sea breeze day with a light SW up the W Solent, & a light SE up the E Solent. On Thursday & Friday the N Atlantic High should extend E again into Biscay with W flow between it & depressions to the N coming up the Channel, bringing a light to moderate W/SW wind, still under clear skies. For Race day on Saturday this W/SW flow should continue, but it is looking quite light so far, albeit hot & sunny.

Gusts are likely to be 1/3 as much again as the average wind speed. Squall-driven gusts may be higher still – the deeper the cloud, the stronger the gust.


Monday July 2nd: ENE 10-14 kts to start, gradually veering right E then ESE 8-12 kts through the afternoon, backing NE 8-12 kts overnight. Cloudy with possible showers in the morning, hot & sunny in the afternoon, 23°C on land, 21°C on the water.

Met Office: ENE 10-14 kts, veering E then ESE 10-14 kts, backing NE 8-12 kt s overnight.

ECMWF: E 10-14 easing 8-12 kts.

NOAA’s GFS model: NE veering E 10-14 kts.


Wednesday 4th: light & variable day – a light & unsteady NE/E to start, with a possible light SW sea breeze in the W Solent, light SE in the E Solent in the afternoon. Hot & sunny.

Met Office: NE/ENE 5-9 kts, dying then coming back SW 5-9 kts after noon.

ECMWF: E 4-8 kts, dying then S/SW 5-9 kts later.

NOAA’s GFS model: NE/E 6-10 kts, then S/SW 5-9 kts later.


Friday 6th: light WSW/WNW, very shifty. Hot and sunny though.

Met Office: NW-SW 6-9 kts, 7-11 kts in the afternoon.

ECMWF: W/SW 4-7 kts to start, 8-12 kts in the afternoon.

NOAA’s GFS model: SW 6-10 kts increasing 8-12 kts.


Sunday 8th: the ridge of high pressure should be directly overhead – it’s likely to be a sunny, dry and very light & variable day for the trip back home.

Tuesday 3rd: ENE 10-15 kts, veering & easing E/ESE 7-11 kts after noon, backing ENE still light overnight, hot & sunny possible afternoon squalls along the coast.

Met Office: ENE 10-15 kts veering E 9-13 kts then backing E 6-10 in the evening.

ECMWF: NE 10-15 kts veering E 8-12 kts after noon, easing E 6-10 kts overnight.

NOAA’s GFS model: NE 12-17 kts veering E 8-12 kts after noon, easing E 7-11 kts overnight.


Thursday 5th: light to moderate SW through the day, some cloud with possible afternoon squalls along the coast.

Met Office: SSW 6-10 kts veering SW 8-12 kts in the afternoon. Clouding over later.

ECMWF: W/SW 4-8 kts in the morning, SW 8-12 kts after noon.

NOAA’s GFS model: S/SW 2-6 kts in the morning, SW 7-11 kts after noon.


Saturday 7th: light to moderate NW to SW - a shifty & unstable day, but hot & sunny.

Met Office: NW 5-9 kts backing SW 8-12 kts in the afternoon. Hot & sunny.

ECMWF: W backing SW 6-10 kts.

NOAA’s GFS model: light & variable settling in S/SW 5-8 kts.

RTIR Monday Forecast | Raymarine - A Brand by FLIR

General Situation (all times in BST)

Today the low is centred over N France with an occluded front along the N coast there. This gives moderate sometimes blustery NE winds to start, and these will veer moderate E then ESE through the afternoon & evening. The front will move W down Channel & slowly encroach N today, with increasing cloud this afternoon & some late afternoon coastal showers. By tomorrow this low will have weakened and there will not be a strong organised pressure gradient. The day will be unstable, light & variable, with a light to moderate E/ESE in the morning veering to a light & shifty S then SW in the afternoon. It will start off cloudy with a chance of light showers, clearing by late afternoon. On Thursday & Friday a ridge of high pressure should settle in W of Ireland & towards Biscay, with a heat low developing over SE England. This will bring a light WNW wind each morning, backing WSW & increasing a little after noon. Both days should be hot and mostly clear. This high is likely to move E over the UK on Saturday, probably settling N of the Isle of Wight. This should bring a light NE gradient wind to start, with the chance of a sea breeze later –it is looking light, hot & sunny.

Gusts are likely to be 1/3 as much again as the average wind speed. Squall-driven gusts may be higher still – the deeper the cloud, the stronger the gust.


Tuesday 3rd: NE 13-17 kts to start, veering E 10-15 kts by noon, then veering SE 6-10 kts by early evening. Sunny this morning, clouding over in the afternoon with some coastal showers. Hot again, 25°C on land, 21°C on the water, watch out for sunburn.

Met Office: ENE 12-16 kts veering E 10-15 kts then easing SE 6-10 in the evening.

ECMWF: NE 15-19 kts veering E 15-19 kts after noon, easing E 8-12 kts overnight.

NOAA’s GFS model: NE 12-17 kts veering E 10-15 kts after noon, easing E 7-11 kts overnight.


Thursday 5th: WNW 6-10 in the morning, backing WSW 8-12 kts after noon. Hot, mostly sunny

Met Office: WNW 6-10 kts backing WSW 8-12 kts after noon.

ECMWF: NW 4-8 kts in the morning, backing W 8-12 kts after noon.

NOAA’s GFS model: W 2-6 kts in the morning, backing SW 7-11 kts after noon.


Saturday 7th: light NE 5-8 kts at first, with a sea breeze coming in around noon – SW 6-10 kts in the W & around the back, SSE 6-10 kts up the E Solent. This is an uncertain forecast, apart from the wind speed which looks light for now. It will be hot & sunny – bring plenty of sun screen.

Met Office: N/NE 3-7 kts, coming back in SSW 5-9 kts after noon.

ECMWF: N 3-6 kts then SE/S 5-9 kts.

NOAA’s GFS model: light & variable settling in S 5-8 kts.

Wednesday 4th: unstable, light & variable. E 5-8 kts to start, dying & veering S 3-7 kts by noon, coming back in as an unstable & shifty gradient-driven SW 5-9 kts by mid afternoon & overnight. Cloudy to start, clearing by mid afternoon, still quite hot.

Met Office: ENE 5-9 kts, dying then coming back SW 5-9 kts after noon, SW 5-9 kts after that.

ECMWF: E 4-8 kts, dying by noon then S/SW 5-9 kts through the afternoon & overnight.

NOAA’s GFS model: E 5-9 kts, easing then returning S/SW 5-9 kts later.


Friday 6th: light NNW 3-7 kts to start, backing WSW/SW 5-8 kts after noon. Hot & mostly clear.

Met Office: NNW 3-7 kts in the morning, Backing WSW/SW 5-9 kts in the afternoon.

ECMWF: N 4-7 kts to start, backing SW 6-10 kts in the afternoon.

NOAA’s GFS model: N/NE 4-7 kts before noon, backing SW 6-10 kts after noon.


Sunday 8th: the ridge of high pressure should be just N – it’s likely to be a sunny & dry day with a light E for the delivery home.

RTIR Tuesday Forecast | Raymarine - A Brand by FLIR

General Situation (all times in BST)

There’s a small low centred just off Lands End today which will slowly move W and fill. Replacing it will be a ridge of high pressure moving in from the W towards Ireland, so we should have a mostly overcast day with some sunny patches – it should stay dry though. The wind will start off as a light E, dying off around noon & then filling back in as a light SSW/SW through the afternoon & evening. Tomorrow this high will be up along the W coast of Ireland with a small heat low over E England. This will bring a light WSW breeze up Channel, becoming moderate in the afternoon. It should be a mostly sunny day. During Friday the high should encroach on the UK mainland, bringing another hot day with a light N/NW to start & a rather fitful SW sea breeze later. On Saturday the high should be right over the centre of the UK, with a light NE to start, veering SE or even S during the afternoon depending where you are. It will be hot & sunny, so apart from the sunburn danger thermal effects & possible sea breeze cell developments will make it a very tactical & head out of the boat day.

Gusts are likely to be 1/3 as much again as the average wind speed. Squall-driven gusts may be higher still – the deeper the cloud, the stronger the gust.


Wednesday 4th: a light & patchy day, & generally cloudy, with more sunny patches in the afternoon. It will be around 20°C on land, 18°C on the water. Expect ESE 4-8 kts at first, light & variable by noon, returning SW 4-8 kts through the afternoon & overnight.

Met Office: ESE 4-8 kts, veering gradually S3-6 kts by early afternoon then SSW 4-8 kts later.

ECMWF: E 6-10 kts, SE 5-8 kts around noon then S/SW 5-9 kts through the afternoon & overnight.

NOAA’s GFS model: E 5-9 kts, easing S 4-7 kts around noon then S/SW 5-9 kts later.


Friday 6th: light NNW 3-7 kts, returning as a WSW/SW 5-8 kts after noon. Hot & mostly clear.

Met Office: N 6-9 kts in the morning, backing WSW/SW 5-9 kts in the afternoon.

ECMWF: N 4-8 kts to start, backing SW 8-12 kts in the afternoon.

NOAA’s GFS model: N/NE 4-7 kts before noon, backing SW 6-10 kts after noon.

Thursday 5th: W 3-6 kts backing SW by noon & increasing 9-13 kts through the afternoon. Sunny.

Met Office: WNW 4-7 kts backing WSW 8-12 kts after noon.

ECMWF: NW 4-8 kts in the morning, backing W then SW 8-12 kts after noon.

NOAA’s GFS model: NW 2-6 kts in the morning, backing SW 7-11 kts after noon.


Saturday 7th: light NE 5-8 kts to start, veering S/SSE 6-10 kts after noon. In the E Solent this is likely to be SE/SSE 5-9 kts through the afternoon. It’s going to be hot & sunny, with local thermal effects very important.

Met Office: NE 3-7 kts, coming back in SE 5-9 kts after noon.

ECMWF: N 3-6 kts then SW 5-9 kts.

NOAA’s GFS model: NE 5-8 kts in the morning, then SE 5-8 kts.


Sunday 8th: the high should still be sitting over the UK, so it’s likely to be a hot & dry day with a light NE veering SE for the trip back.

RTIR Wednesday Forecast | Raymarine - A Brand by FLIR

General Situation (all times in BST)

The low off Lands End should fill today, with the N Atlantic High moving E over Ireland. As the day warms up a weak heat low will develop over the E of England, and this will bring a light W/WSW wind along the S coast, which will be thermally enhanced through the afternoon. It will be a warm day with patchy cloud and no rain. Tomorrow this high should move over the UK bringing a light N/NW gradient wind. It should be a hot and sunny day, allowing the heat low to develop again over the E of England. As it does so the breeze should back left WSW up the Channel, remaining quite light. For Saturday the high should be firmly settled over the UK with its central ridge extending from S of Ireland to around Newcastle. This will bring a hot and sunny day with a light NNE/NE gradient wind to start. This is likely to be replaced by a developing sea breeze around 1100, light S/SSW around the back of the Island, light SSE/SSW through the E Solent. It will be a very tactical day.

Gusts are likely to be 1/3 as much again as the average wind speed. Squall-driven gusts may be higher still – the deeper the cloud, the stronger the gust.


Thursday 5th: W/WSW 7-10 kts increasing WSW 8-12 kts through the afternoon. Warm and dry with scattered cloud, up to 23°C inland (less if exposed to the breeze), 21°Con the water and sea temperature 18-19°C.

Met Office: WNW 6-10 kts backing WSW 8-12 kts after noon.

ECMWF: W 6-9 kts in the morning, backing SW 8-12 kts after noon.

NOAA’s GFS model: NW 2-5 kts in the morning, backing SW 6-10 kts after noon.


Saturday 7th: light NE 4-7 kts to start, going very light amd patchy then returning S/SSE 6-10 kts around noon veering right SSW 6-10 kts around the back of the Island. In the E Solent this is likely to be SE/SSE 5-9 kts through the afternoon. It’s going to be hot and sunny, with significant local thermal effects.

Met Office: NE 5-8 kts, dying around 1100, settling back in S/SSW 5-9 kts after noon.

ECMWF: N 3-6 kts then SW 6-10 kts.

NOAA’s GFS model: N 3-6 kts in the morning, then SW 6-10 kts.

Friday 6th: light NNW 3-7 kts, backing WSW/SW 5-8 kts after noon. Hot and sunny.

Met Office: N 6-9 kts in the morning, backing WSW/SW 5-9 kts in the afternoon.

ECMWF: N 4-8 kts to start, backing SW 8-12 kts in the afternoon.

NOAA’s GFS model: N/NE 4-7 kts before noon, backing SW 6-10 kts after noon.


Sunday 8th: hot, sunny, light and variable winds.

RTIR Thursday Forecast | Raymarine - A Brand by FLIR

General Situation (all times in BST)

The high pressure that’s been moving in from the W will start to dominate today. This is sitting in a wide ridge centred from in between Lands End and Ireland to the NE of England. It has a reasonably strong inversion too, visible as the dusty layer over the mainland. The breeze today will start off as a light N/NNW gradient wind. This should allow a sea breeze cell to develop underneath it, with the breeze dying off around noon then coming in from the WSW/SW, and this will be strongest through the warmest part of the afternoon, easing off and veering NW again by dusk. In the E Solent and outside the Forts this is likely to be further left, light SW to SSW this afternoon. For Race Day tomorrow the high will have strengthened, with a light NNW/N wind at first for the start. This will die off at surface around noon with a sea breeze cell developing underneath it, coming in light SW around the back of the Island and probably S/SSW outside the Forts. By mid to late afternoon this will be a light WSW in the E Solent, easing and backing W/WNW towards dusk. It will be a very patchy day, so lots of gains can be made if you keep your head out of the boat. It will also be very hot and sunny, so watch for sunburn and dehydration.

Gusts are likely to be 1/3 as much again as the average wind speed. Squall-driven gusts may be higher still – the deeper the cloud, the stronger the gust.


Friday 6th: light NNW/NW 2-6 kts, dying off then coming in WSW/SW 5-8 kts around noon then increasing 7-11 kts and becoming steadier as the land is warmest in the afternoon, easing and veering NW 5-7 kts by dusk. The E Solent and outside the Forts will start off NW 4-7 kts, then back left SW/SSW 7-11 kts through the afternoon, veering right NW 3-6 by dusk. It’ll be a glorious day, 28°C onshore, about 23°C on the water, with the water at 18-19°C.

Met Office: N/NNW 6-9 kts in the morning, backing WSW/SW 7-11 kts in the afternoon.

ECMWF: N 4-8 kts to start, backing SW 7-11 kts in the afternoon.

NOAA’s GFS model: N 4-7 kts before noon, backing SW 5-8 kts after noon.

Saturday 7th: light NNW 4-7 kts to start, going very light and patchy with a sea breeze developing. Expect WSW 4-8 kts around noon backing SW 6-10 kts around the back of the Island. In the E Solent and outside the Forts this is likely to be further left, S/SSW 5-9 kts through the afternoon. It’s going to be hot and sunny, much as today.

Met Office: NNW 5-8 kts, dying by noon, settling back in SW/SSW 6-10 kts through the afternoon.

ECMWF: N 4-7 kts then SW 6-10 kts after noon.

NOAA’s GFS model: N 3-6 kts in the morning, then SW 5-8 kts through the afternoon.


Sunday 8th: hot, sunny, light N/NE until early afternoon with a late and light SW sea breeze after that.

RTIR Thursday Forecast | Raymarine - A Brand by FLIR

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AIS CASHBACK OFFER

Purchase a new AIS700 and Get £150 Cashback

May 1st to July 31st, 2018

OFFER: If you are racing the 2018 Round the Island Race and purchase a NEW Raymarine AIS700 between May 1st and July 31st you are entitled to £150 cashback.

HOW TO QUALIFY FOR AND REDEEM YOUR CASHBACK OFFER:

  1. You are competing in the 2018 Round the Island race and havve a copy of your race entry.
  2. You purchase a NEW Raymarine AIS700 from any Raymarine retailer or Certified service dealer between 1 May 2018 and 31 July 2018.
  3. Provide a copy of the purchase invoice and a copy of your race entry Download Cashback form here.
  4. Within 30-days of purchase, mail the items as per listed below to:

    AIS700 Cashback Raymarine UK Ltd
    Cartwright Drive,
    Segensworth
    Fareham,
    Hampshire PO15 5RJ

    • copy of your invoice
    • copy of your race entry
    • completed Cashback Form

See Cashback Offer Terms, Conditions, Limitations and Exclusions (on reverse) for additional requirements and other important information.