GFS: High Pressure Builds In Easter Weekend, Looks Set To Last Throughout Next Week!

There’s no real change to the Easter weekend idea. Models still show high pressure building in from the WSW and this should help push out the fronts that have brought all the wind, rain and snow of late and will continue to through tomorrow. Speaking of snow, this was the scene I was greeted to near Drumnochter Pass yesterday afternoon on my drive up to Invergordon.

Credit: Mark Vogan

Credit: Mark Vogan

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Despite it being the first day of spring’s 2nd month, old man winter made his presence felt once again with persistent cold, biting NW winds blowing straight from Greenland but as we head into the holiday weekend, ridging will settle things down with much lighter winds and a milder air mass.

The one change from Tuesday’s Easter forecast would be that daytime highs and nighttime lows are likely to be milder. With more cloud by night, there won’t be as great a chance of frost and by day, with sun or cloud, expect highs to be in the 9-14C range.

Here’s the GFS surface charts into the weekend. The last in a series of fronts crosses Ireland today and the UK tonight and tomorrow. The last front bringing more rain should be out into the North Sea by Saturday leaving behind much more quieter, more settled conditions.

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

According to the latest GFS, this more settled anticyclonic pattern appears to build further Easter Monday and establish itself right through next week.

Exact positioning of the high will be key as to temperature and cloud cover. The high appears to start off to the SW which may pull cooler NNE air in but if it builds directly overhead as suggested early and mid next week, this may allow warmer days but equally cooler nights.

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

If slightly east of the UK as suggested for the 2nd half of next week, that would mean warmer temps and southerly flow.

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Mind what was said for the end of April’s opening week? Warmer weather??

GFS ensemble 5-day mean 500mb height anomalies show the building of high pressure into the UK.

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

GFS operational shows the mean position W of the UK in the 0-5 day and then E of UK day 5-10 which signals a warmer setup.

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

Credit: AccuWeather Pro (Inc) 2015

See video for the summer 2015 forecast discussion.

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