TODAY'S TOP WEATHER STORIES
On Weather & Climate Through the Eyes of Mark Vogan
US RATTLED BY SEVERE WEATHER/TORNADOES
TEMPS PLUNGE 30 TO 50 DEGREES FROM ROCKIES TO PLAINS BEHIND STORM'S FRONT WHILST NEAR 80-DEGREE HEAT EYES PHILADELPHIA
SEE TODAY'S WEATHER ACROSS AMERICA BY MARK VOGAN FOR DETAILS!
We are seeing quite a temperature difference across the Mid-Atlantic and Northeast with a toasty 84 degrees currently at Baltimore, MD whilst it's only 33 degrees at Bangor, ME. While it's reached 77 which is the warmest of the year in Philadelphia, PA, New York City is only 59 thanks to the warm front sitting between the two metropolis' and splitting the warmth from cool. It's an even cooler 44 at the moment in Boston!
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TODAY'S WEATHER ACROSS UK & EUROPE
By Mark Vogan
Published (Yesterday)
This week may see major European cities warm to levels not seen in 6-7 months!
A 13 or 14C high for Moscow would be the warmest since November 10-11th, for London, a 21C high by Thursday would be it's warmest since October 8th
For the first two days of April, 2011, Moscow has warmed to 4.7 and 5.9C respectively but as of 7pm this evening, it's a balmy 11C. Moscow has likely topped out at 13 or 14C. This would in fact soar beyond the past two days and first two of the new month. This is also the warmest readings for the Russian capital since way back on November 10-11th last year which was 13 and 14C and as well as that, the normal for the first few days of April is only 5C and the normal low is -2C. Incidentally, Moscow just two nights ago saw a low fall to -9C or 16F.
LONDON MAY REACH LEVELS NOT WITNESSED SINCE SEPTEMBER!!
By late this upcoming workweek temperatures in and around London may well top 21C for the first time since way back on October 8, 2011 when it also reached 21C or 70F. However, it's very possible that it may reach even warmer than 21, perhaps a 22, even 23C isn't out of reach by this upcoming Thursday, that's a warm 73 or 74 degrees F. Would you believe that not only would this be the warmest readings since September 22, but also the warmest during all of September for London Heathrow was only 23.9C (75 degrees), so it may actually get close to reaching that by Thursday. Incidentally, the warmest so far was 18.8C or 66 degrees which was last month.
As for the UK as a whole, the warmest so far was firstly reached on Friday last week in the northern Scotland town of Lossiemouth, located along the Moray coast where it reached 19C in the sun. The warmth here in particular was likely boosted by a strong southwest wind which likely downsloped off the northern Grampians. Those hills also stopped rain bearing clouds which brought heavy, thundery rains over the west, northwest Highlands from reaching the more sheltered Moray coast, helping both sun and compressional downslope winds to warm this northern town to Britain's warmest levels since 2010.
Yesterday however, saw a 20C or 69 degree high at Writtle, Essex, marginally besting that of Lossiemouth's the day before. These numbers will be long forgotten about come late this week as highs in the southeast of England likely see temperatures not witnessed since at least October, if not September last year.
BRUSSELS, BELGIUM 20-25F ABOVE NORMAL, MAY TOP THAT LATE THIS WEEK COMING!
Even in western mainland Europe as strong southwesterlies blow and unusually warm high pressure pulling up from Spain and the western Sahara, temperatures though warm last week, may quite easily surpass what was the warmest readings of 2011 so far in the cities of the low countries.
Incredibly, Brussels, Belgium saw a toasty 23.4C (74 degrees F) high yesterday which in fact was way way above the average high of just 12C, later this week, whilst southeast England climbs into the low 20s C (low 70s F), so too will cities across the North Sea in the low countries. Belgium will take another run at those incredible levels witnessed yesterday.
AMSTERDAM, HOLLAND SEES HIGH 14C (25F) ABOVE NORMAL!
Belgium's neighbouring cities also saw incredible April 2nd heat with a very warm 23.2C (74 degrees F) recorded at Amsterdam, Holland, that's a huge 14C or 25 degree F above normal.
IT WOULD TAKE A LOT TO BEAT YESTERDAY'S 25C HIGH IN PARIS, LATE WEEK PATTERN DOESN'T FAVOR JUST AS WARM... WHY SO WARM HERE ANYWAY, PERHAPS BLAME WEATHER OVER SCOTLAND?
If you thought both Brussels and Amsterdam was warm yesterday, try a 25C or 77 degrees F at Paris, France, helped perhaps by lower pressures, sliding across Scotland which excellerated a southwesterly flow over northern France forcing hot weather over Spain to cross the Pyrenees and funnel between the Alps to the east and the strong boundary sliding east over the UK. This set up with the near 30C air over Spain being forced north, northeast at high speed meant little time to moderate as it progressed north. The flat topography of the region from central France to northern Holland was also likely a big influence. The cooling effects of the nearby North Sea was'nt there simply because the sea was underneath the boundary and not to the east where the hot air was blowing north, directly into these lowland cities of far western Europe.
WITH LESS LOW PRESSURE OVER SCOTLAND AND LESS SOUTHWEST WINDS FORCED UP FROM SPAIN LATER THIS WEEK, IT'S LIKELY TO BE LESS WARM IN PARIS, BRUSSELS AND AMSTERDAM
It's likely to warm into the low 20s C later this week in Paris, but to beat yesterday's extremely warm levels, well it's unlikely. The thing to remember is that the core of heat was over northern France yesterday and the pattern overall across western Europe and the UK was perfect for the exceptional warmth found in Brussels, Amsterdam and Paris. Scotland saw a boundary slide in from off the Atlantic which helped areas further east to see strenghening southwest winds. By lower pressure moving east over Scotland and towards a strong high pressure over Spain this tightened the pressure gradient. The fact that Spain was seeing very warm spring heat (25-30C) and winds blew strong from here northwards, this allowed these three cities (Paris, Brussels and Amsterdam) to see yesterday's amazing warmth.
With warmer air spreading north once again this week but further west and shared with the UK, that southwest wind won't be blowing as hard from Spain, therefore, without a powerful southwest wind aligned and funnelled purely over 'mainland western Europe' means, the core of heat isn't as concentrated over the mainland as much as yesterday, The warmth, though well above normal is shared more widely, therefore temperatures won't get as warm as they have done in Paris, Brussels and Amsterdam but London all the way to Glasgow will likely see their warmest levels of the year so far.
TODAY'S WEATHER ACROSS AMERICA
By Mark Vogan
OHIO/MISSISSIPPI VALLEY UNDER TORNADIC GUN THIS AFTERNOON
POWERFUL COLD FRONT SWEEPS EAST THROUGH THE OHIO/MISSISSIPPI VALLEY
AHEAD OF THE COLD FRONT TEMPS TO PUSH 80 AT DC/BALTIMORE, 78 IN PHILADELPHIA TODAY BUT COOLER IN NYC AND BOSTON
Today, it's the Eastern coastal plain's turn for some heat as the cold front sweeping across the country, delivers nasty severe thunderstorms and tornadoes to the Ohio/Mississippi valleys.
As his strong front approaches, the air out ahead of it (east of the front) draws warm, humid air northwards, thus allowing areas well to the north to rise into the 70s or even 80s. Today as warmth sweeps northeastwards up and east of the Appalachain chain, a warm front is drawing north and this will allow 80-degree heat to cross Washington DC, Baltimore and may get close to Philadelphia later this afternoon. That warm front with rain showers and even embedded thunderstorms won't reach New York City and therefore, highs will only get into the upper 60s with off-on rains today and mostly cloudy conditions. Even further north and it's likely to remain cold with Boston only reaching the upper 40s as colder air draws south from a high over Ontario. The Northeast may have a temperature spread of over 40 degrees this afternoon, the difference between summer over the Mid-Atlantic to winter over New England.
HUGE TEMPERATURE DIFFERENCE TODAY ACROSS PLAINS STATES AS BACKSIDE COLD, SNOWY AIR SWEEPS SOUTH ON STORM'S BACKSIDE
MANY AREAS FROM THE CENTRAL PLAINS TO LOWER MIDWEST FALL FROM 80s AND 90s TO 40s AND 50s TODAY
You only have to compare yesterday's highs (below graphic) with the highs expected today (above graphic). Take a look at the southern and central Plains up into the Lower Midwest. This heat was generated out ahead of the cold front which sweeped through Colorado late Saturday after Denver reached a record high of 84 degrees. Yesterday, it remained in the 30s with an inch of snow down at Denver Airport. The passing of the front produced 70 to over 90 mph winds also, illustrative of the power of this front. Yesterday, saw the heat surge northwards, prior to the front's arrival, pushing upper 80s to even 90 degree temperatures as far north as Iowa and Illinois. Last night saw the front swing through the Midwest and today, the atmosphere has been cleaned out the huge region from Denver to Chicago feeling Canadian air after it's taste of summer tropical!
VAGARIES OF THE WEATHER
INDIA & SUB-CONTINENTAL ASIA WEATHER
BY RAJESH KAPADIA
The A1 Effect:
Look at the day temperatures in the sub-continent on Monday, 4th April. A couple of 39s, and some 38s. Highest in India being at Kurnool, 39.4c. and the entire Northern region is in the 33/34 range. Kashmir and H.P. were very cold today, with the highest in Srinagar at 10c.
The departure from normal map from IMD says it all !
Across the border too, the days were less hot on the 4th, with the highest in Pakistan showing 38.6c at Lasbella.
A thundershower on Monday noon turned weather pleasant for the residents of Islamabad. Day was comfortable with a high of 21c and low dropping to 9c on Monday.
But, A1 sprang a surprise in Muree. The hill station reieved snowfall, and according to reports, the last time it snowed in April was in 1996.
Seeing days getting hotter in Sindh again, to 42/43 levels, next 3 days.
Forecast for Tuesday/Wednesday/Thursday/Friday..forecast till 8th April.
Summary of events till Friday, 8th in Vagaries map; Click here for map enlargement.
Now, with A1 moving away from tomorrow, Tuesday, I see precipitation decreasing in Kashmir and H.P. Rainfall will be restricted to the NE states and Orissa coast in the Indian region next 4 days, i.e. till Friday, 8th. April.
Some covective thundershowers in Central India on Friday.
As the rain effect wears off, mild heat wave conditions, are expected to spread into the Vidharbha, Southern M.P. and Gujarat regions from Wednesday thru Friday. Ahmadabad could see a high of 42c by Thursday.
Rise in Northern India may be to the high 30s, next 3 days.(Again, to compare the increase, see current days in the map above).
But, as a line of wind dis-continuity may form, resultant convective rains and thundershowers will cool the days on Friday in Vidharbha and east M.P.regions.
Nepal too, may see warmer days till Friday. However, some thundershowers in the hilly areas could be possible till Friday due to moisture remaining from A1.
Mumbai: Pleasant for this time, with the days at 31/32c and nights a pleasant 20/23c. Quite comforrtable for Mumbai, with a week gone in April !
Interior maharashtra is, in fact shivering last few nights. As mentioned in vagaries. Pune and Ahmadnagar were 11c a couple of days ago. Even on Monday morning (4th), Nasik was 13.2c and Pune was 13.4c.Both 5c below normal. Several cities were around 15c.
For Saturday,, 9th April onwards Vagaries will put up a fresh forecast, as A2 arrives and will be active. As of now, seems A2 is set to be a bit more active than A1.
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THE EXTREMES OF THE DAY
TODAY'S US EXTREMES
COURTESY OF ACCUWEATHER
HIGH: 103 degrees at McAllen, TX
LOW: 0 degrees at Berthoud Pass, CO
TODAY'S EXTREMES HERE AT MY HOUSE
HIGH: 51 degrees
LOW: 39 degrees
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Thanks for reading.
-Mark
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