Tuesday, June 14, 2011

14 June, 2011

TODAY'S TOP WEATHER STORIES
On Weather & Climate Through the Eyes of Mark Vogan

Courtesy of CBS News

Arizona wildfire is now the state's largest ever
CNN

Ariz. wildfire becomes biggest in state history
NBC NEWS

Arizona wildfire now largest in state's history
CBS NEWS

TODAY'S WEATHER ACROSS UK & EUROPE
By Mark Vogan

Major trough and low to push into UK from Atlantic renewing cool, unsettled pattern, possibly bringing late weekend high wind and rain event

Pattern Highlights of the Next 72 Hours

1) Warm & Sunny Weather throughout the UK will be removed by a new Atlantic low currently positioned over the N. Atlantic that will reach the UK bringing a return to cooler and more unsettled weather progressing from NW to SE Thursday through Friday.

2) By Saturday-Sunday, the trough of cold air will cover ALL OF THE UK and highs won't reach 20C in the typically warm SE of England. Even France will see cloudier, cooler temps with Paris also failing to reach 20C.

3) All the warmth currently covering mainland Europe will all get forced east as the ridge gets replaced by a deepening trough. A well pronounced SW flow will be activated and positioned over eastern Europe forcing very warm air up into the eastern block countries.

4) The ridge remains dominant over Spain and unaffected by the trough to it's north. In fact this ridge will build by late week and this could well push the trough eastwards.

5) By the Sunday to Tuesday time frame, high pressure builds and expands eastwards from Spain eastwards across the Med Sea at the same time the trough becomes elongated over the north. This sets up quite the divide and thermal contrast between north and south. To the south and beneath the intensifying high pressure, the atmosphere becomes further 'capped' all but shutting down the atmosphere's ability to produce showers and thunderstorms as well as deflecting the recent series of tiny upper lows that have trigger showers and storms over the region.

European model has VERY HOT air over central/southern Spain next Tuesday and classic warmth and sun across the Mediterannean

If the European model is correct, the heat remains over central and southern Spain throughout the rest of this week with an actual building of the ridge by next Monday into Tuesday. It shows a 588mb height line to the north of Madrid and this would suggest 38C heat at the least for Madrid, perhaps 40-42C in Seville.

On the same model, a trough stretched from the UK all the way across to eastern Europe over top of a strong high over the Med Sea. This would indicate cool, unsettled weather from the UK down into France and across Germany, Poland and into western Russia while hot, brilliantly sunny conditions support classic temps in the 29-35C across the Med Sea and it's surrounding countries and islands.

TODAY'S WEATHER ACROSS AMERICA
By Mark Vogan

US Divided north to south, storminess rules in between

The below graphic shows clearly the current pattern across the country. The heat continues to brutalise the Southern Plaind and Southeast while a cold pool drapes across the Northern Plains. You don't have to be a meteoroologist to work out whehere the fight and storm zone will be... That's the Central Plains!


The battery source for the storminess is a large upper low centered over Montana that has a powerful jet stream flowing to it's south and aligned west to southeast. This upper flow is far enough south that it likely will trigger some showers and thunderstorms over north Georgia and more thunderstorm clusters will fire up over Florida this afternoon also. Today's main active region for storms will be across the Central Plains states into the mid-Mississippi Valley and Ohio Valley. To the south upper 90s to low 100s rule beneath a powerful, blowtorch June sun.


Here below is a graphic of foprecast highs from The Weather Channel. As you can see the Northeast has a cool, refreshing air mass in place thanks to a trough and low over the region as is dipicted by the graphic at the top of this segment.


Hot conditions prevail across the Desert Southwest with highs rising into the low 100s across both Las Vegas and Phoenix, typical for the time of year. However, a trough covers most of the Western US just above the high over NW Mexico and Arizona.

More 100 degree days for Houston, Texas, likely today and coming days!



VAGARIES OF THE WEATHER
INDIA & SUB-CONTINENTAL ASIA WEATHER
BY RAJESH KAPADIA

BB1, is likely to descend to seal level as a low pressure by tonite. Initially, at around 998 mb, it will form off the Orissa coast, with clouds in the southern and SW quadrant of the system.

Since a seasonal trough today runs from west to east, with its western end over Upper Sindh and running thru Rajasthan, U.P. and the eastern end into the system.

Normally, BB1 will track along this trough. Presuming the trough to remain in the same position, which it should, the low, on deepening into a well marked low by Thursday, will track into North M.P. and thence into U.P.
But, bearing in mind the clouding is in the south and SW of the centre of BB1, rainfall will be more in Eastern Vidharbha initially, and moving into east M.P. from Thursday/Friday. Similarly, the eastern end pf the trough will get active to precipitate heavy rains in the NE states, and presumably move SWM into more areas of the east and Nepal.

In line with BB1, west winds will be attracted towards the low on the west coast. Heavy rain along North Konkan accordingly from Thursday. Mumbai forecast put up yesterday remains intact !

As-1 is now out and over, done with. Precipitation is dying out off the Saurashtra coast. I understand there were traces of rain in Karachi yesterday. Dont think more can be expected from "ex-AS1" Continue reading!

WHAT'S REACHING TODAY'S BLOGS?

THE EXTREMES OF THE DAY

TODAY'S US EXTREMES
COURTESY OF ACCUWEATHER

HIGH: 111° at Pecos, TX
LOW: 27° at Sunset Crater, AZ

TODAY'S UK EXTREMES
COURTESY OF THE MET OFFICE

HIGH: 74° (23.4°C) at Charlwood (Surrey)
LOW: 32° (0.1°C) at Katesbridge (Co Down)

TODAY'S EXTREMES HERE AT MY HOUSE

HIGH: 68°
LOW: 47°

Thanks for reading.
-Mark

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