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Monsoon activities weak over NE region

By Ajit Patowary
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GUWAHATI, July 30 � Monsoon this time is weak over the NE region as well as over other parts of the country, even as rainfall activities over the Northern part of the country this monsoon is comparatively good, said Hargobinda Pathak, Deputy Director General of Meteorology (DDGM) of the Regional Meteorology Centre (RMC) here. He was talking to this newspaper.

Pathak has linked the above phenomenon to the non-formation of weather systems, like monsoon low-pressure areas, monsoon depressions and monsoon trough over the North Bay of Bengal. This development may be attributed to the change in global atmospheric circulation system, confirmation of which requires extensive study taking into consideration the meteorological data of at least 100 years, including those related with the global wind system, he said.

According to him, Assam has recorded 27 per cent deficit rainfall, between June 1 last and 27 th of the current month. Against the 833 mm of normal rainfall, the State recorded a rainfall of 607.9 mm during the period.

Similarly, Manipur has recorded a deficit rainfall of 46 per cent with Meghalaya recording a deficit rainfall of 31 per cent, each of Mizoram and Nagaland recording a deficit rainfall of 34 per cent and Tripura recording a deficit rainfall of 22 per cent this monsoon.

Though Arunachal Pradesh has recorded a deficit rainfall of 7 per cent during the period, it is within the range of normal rainfall, Pathak said.

It may be mentioned here that in 2009, Assam recorded a deficit rainfall of 33 per cent and in 2010, it recorded a deficit rainfall of 8 per cent. However, 8 per cent is very much within the range of normal rainfall.

Meanwhile, Guwahati recorded above the normal maximum temperature on 21 days during the current month. It recorded below normal maximum temperature on four days and normal maximum temperature on equal number of days during the month.

On July 12, the city recorded the highest maximum temperature of the current month with 37 degree Celsius, against its normal maximum temperature of 32 degree Celsius for the period between July 4 and July 31.

Likewise, Dibrugarh recorded above normal maximum temperature during the month on 15 days. It recorded below the normal maximum temperature on 10 days and normal temperature on five days.

During the month, Tezpur recorded above the normal maximum temperature on 16 days. It recorded below normal maximum temperature on seven days and normal maximum temperature on six days.

Silchar recorded above normal maximum temperature on 23 days and on six days it recorded below the normal maximum temperature during the month.

North Lakhimpur town recorded above normal maximum temperature on 17 days and below normal maximum temperature on eight days and on four days it recorded normal maximum temperature during the month.

Pathak said that during the current month, Guwahati witnessed 12 rainy days, when the rainfall occurred above 2.5 mm. The city witnessed 18 non-rainy days. It witnessed 10 moderate rainfall days with rainfall occurring between 1cm and 3 cm in a day.

The city witnessed no rather heavy rainfall days�that is, rainfall occurring between 3 cm and 6 cm in a day, and heavy rainfall days�that is, rainfall occurring over 7 cm in a day, during the month. During the month, it recorded the highest rainfall of 21.5 mm on July 18, said the DDGM.

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Monsoon activities weak over NE region

GUWAHATI, July 30 � Monsoon this time is weak over the NE region as well as over other parts of the country, even as rainfall activities over the Northern part of the country this monsoon is comparatively good, said Hargobinda Pathak, Deputy Director General of Meteorology (DDGM) of the Regional Meteorology Centre (RMC) here. He was talking to this newspaper.

Pathak has linked the above phenomenon to the non-formation of weather systems, like monsoon low-pressure areas, monsoon depressions and monsoon trough over the North Bay of Bengal. This development may be attributed to the change in global atmospheric circulation system, confirmation of which requires extensive study taking into consideration the meteorological data of at least 100 years, including those related with the global wind system, he said.

According to him, Assam has recorded 27 per cent deficit rainfall, between June 1 last and 27 th of the current month. Against the 833 mm of normal rainfall, the State recorded a rainfall of 607.9 mm during the period.

Similarly, Manipur has recorded a deficit rainfall of 46 per cent with Meghalaya recording a deficit rainfall of 31 per cent, each of Mizoram and Nagaland recording a deficit rainfall of 34 per cent and Tripura recording a deficit rainfall of 22 per cent this monsoon.

Though Arunachal Pradesh has recorded a deficit rainfall of 7 per cent during the period, it is within the range of normal rainfall, Pathak said.

It may be mentioned here that in 2009, Assam recorded a deficit rainfall of 33 per cent and in 2010, it recorded a deficit rainfall of 8 per cent. However, 8 per cent is very much within the range of normal rainfall.

Meanwhile, Guwahati recorded above the normal maximum temperature on 21 days during the current month. It recorded below normal maximum temperature on four days and normal maximum temperature on equal number of days during the month.

On July 12, the city recorded the highest maximum temperature of the current month with 37 degree Celsius, against its normal maximum temperature of 32 degree Celsius for the period between July 4 and July 31.

Likewise, Dibrugarh recorded above normal maximum temperature during the month on 15 days. It recorded below the normal maximum temperature on 10 days and normal temperature on five days.

During the month, Tezpur recorded above the normal maximum temperature on 16 days. It recorded below normal maximum temperature on seven days and normal maximum temperature on six days.

Silchar recorded above normal maximum temperature on 23 days and on six days it recorded below the normal maximum temperature during the month.

North Lakhimpur town recorded above normal maximum temperature on 17 days and below normal maximum temperature on eight days and on four days it recorded normal maximum temperature during the month.

Pathak said that during the current month, Guwahati witnessed 12 rainy days, when the rainfall occurred above 2.5 mm. The city witnessed 18 non-rainy days. It witnessed 10 moderate rainfall days with rainfall occurring between 1cm and 3 cm in a day.

The city witnessed no rather heavy rainfall days�that is, rainfall occurring between 3 cm and 6 cm in a day, and heavy rainfall days�that is, rainfall occurring over 7 cm in a day, during the month. During the month, it recorded the highest rainfall of 21.5 mm on July 18, said the DDGM.

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