Sunday, May 02, 2010

Heat Wave Abates in India:
The W.D.s discussed in our previous blog have effectively reduced the day temperatures in almost the whole of India.Yes,the heat wave in India has abated. What a relief! The days have in fact now gone into the "below normal" range in the Eastern half of the country, and save the extreme west, which is still above normal,and East U.P.and Bihar, which are very much below normal, the rest of India has slipped into the normal range.(IMD Map).
And yes, alongwith the west, the Sindh region of Pakistan remains hot, with Nawabshah in Sindh reaching 46c today.
Meanwhile for India, the highest was a "bearable" 43.6c at Ahemdabad.
In fact, taken Asia as a whole, India's highest slips down to No.5 place, along with 5 other places at 44c, after
Nawabshah (Pakistan)                46°
Jacobabad ( Pakistan)                45°
Hyderabad Airport (Pakistan)      45°
Chhor (Pakistan)                       45°
Badin (Pakistan)                       44°
Monywa (Myanmar)                   44°
Mandalay (Myanmar)                 44°
Rohri (Pakistan)                       44°
Sibi (Pakistan)                         44°
Ahmadabad Airport (India)         44°.
The extreme west of India and into Pakistan still show high temperatures today (2 May), with several 45s. Some 41s and 40s do pop up at random places in India,but rest of the other places were in their late 30s,(see Max day temperatures ,2nd. May, Univ. of Cologne Map).

The W.D. has precipitated rain in the North-West, North and Central regions of the country in the last 2 days, which have brought the day temperatures "under control" Though the rain amounts in the above regions were not much, as shown here, the effect has been good enough.
Now, another W.D has been predicted to cross over into India on the 4th. As I see it from the satellite imagery, the approaching W.D. seems to be a bit stronger, and may have a larger effect rainfall wise in the North and Central regions. And of-course, temperatures in these areas can come down a further 2/3c, from 4th.
But as it is not "in season", I think the W.D.may pass off quickly to the Eastern Himalayas.
In fact, it should be that way. We certainly do not want cooler day temperatures in the Central plains,as it would ruin the formation of the seasonal low, now required to deepen.
We shall see the effect, if any ,of this change of weather on the Monsoon preparations in the next Monsoon Watch which will be posted on 5th. May.

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