>8 May, 2011

Written by Mark Vogan on May 8, 2011 in Rest of Europe with 0 Comments

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TODAY’S WEATHER ACROSS AMERICA By Mark Vogan

Blowtorch cranks across Southern Plains with record 108 @ Altus, Ok & 108 @ Laredo, Texas this afternoon

Through the early part of the new workweek, the heat will remain in full throttle across the Plains, up into the Ohio Valley with the core of this mid-summerlike blowtorch centered over central Texas into southern Oklahoma as we have seen today as a strong trough will begin deepening as of tomorrow, thus sweeping unseasonably chilly air across the west. This pushing down from the north, pushes air further east up from the south. Merge these two very conflicting air masses together and you’ve a garentee of nasty weather forming in between. The low of will form at the base of this trough to the lee of the Rockies will spark trouble and with varying speeds and direction of winds where the steep -15/20 verses +15/20 degree air meet, surface convergence and divergence aloft means regular thunderstorms which blow up will quickly transition to rotary supercells starting tomorrow (Monday) through at least midweek. STAY TUNED!

TODAY’S WEATHER ACROSS UK & EUROPE By Mark Vogan

Highs reach close to 30C once again across Belgium and Holland while Britain begins feeling the trough’s effects

The 850mb pressure heights for Monday, notice their greatly deduced across Britain with slightly stronger heights remaining only in the far southeast of England. These pale yellows show a much colder 850 or 5,000ft level temperature as lower pressures not control our weather bringing Atlantic cloudcover, rain showers and cool breezy conditions to most.

While Ireland and the UK begins to feel the cooldown as all the warm, humid air gets pushes back towards the mainland continent, the large low that’s been spinning off Ireland pretty much all week is finally making it’s way east and this will bring us a great reduction in temperature as the southerly flow gets cutoff and a southwest flow off the cool waters of the Atlantic arrive and dominate our airspace for certainly the next several days. The eastward shift hasn’t been far enough east to get rid of the powerful sunshine and 84-86 degree (28-30C) heat across interior Belgium, Netherlands on eastwards into Germany while the UK’s warmest temperature was removed from Greater London and confined to near the North Sea coast at Norwich Apt, Norfolk where it warmed to a still pleasant 75 degrees (23.9C) but down from previous days. London saw the cool effects of the low as it only got to around 68 or 70 degrees (20-21C) rather than 78 degrees (25C) the previous day. All this caused by lower heights aloft which cools the mid and upper levels and supresses the incoming solar radiation’s ability to heat the ground and thus warm the lowest levels of the atmosphere in which we walk around in.

As the large trough crosses deeper into the UK, dropping pressures over mainland western Europe in the next 24-48 hours we all see cooler more unsettled pattern with even the now hot spots of Interior Belgium and the Netherlands too seeing clouds and below 20C temps.

It appears to be a much cooler, more unsettled week ahead for all of Britain as well as the western mainland of the continent.