THE MAIN WEATHER AND CLIMATE FEATURES OF THE NORTHERN HEMISPHERE IN JUNE 2018

Air Temperature.

Only Siberian inhabitants felt a real hot summer weather on the Russia territory since the first day until the end one of June. The last June became here the hottest month on the record, i.e. since 1891. Let remind you, that the last year June was also extremely hot. This time the average monthly air temperature anomalies exceeded +8°. In some areas, the temperature reached 40°, the new temperature records were registered repeatedly.
In the other regions of the country, the warmth and cold replaced each other during the month. In the European territory and Urals the cold weather (even frosts) in the first and second decades was replaced by the heat in the third one. In the south, the temperature was higher than +40°. As a result, if in the Central region, especially in the ETR south, the heat overpowered the cold (average monthly air temperature anomalies are positive here), in the most part of Volga area and Urals the cold at the average during the month overpowered the warmth.
It was colder than usual in the south of the Far East, in the north it was cold, even frosts and warmth replaced each other, as a result, the average monthly air temperature was placed in the third line of the highest ranged values since 1891.

THE MAIN WEATHER AND CLIMATE FEATURES OF THE NORTHERN HEMISPHERE IN MAY 2018

Air Temperature.

During at least two last years (2016 and 2017) every month the average monthly air temperature in the Northern Hemisphere was in the first five highest values on the record, i.e. since 1891. However, the situation has been changed in the beginning of 2018. In January, the average monthly air temperature got 6th rank, and then it reached the end of the second five values, in February – 9th rank, in April – 8th one. May continued this tendency. Its average monthly air temperature holds 7-12 line among the highest ranged values.
Oceans are responsible substantially for the cold anomalies of the last May. In the north of Indian ocean, in the north and south of Atlantic and central part of Pacific oceans the average monthly air temperature became lower the norm, at some places by 2° and lower. In the continents, the cold dominated in a lot of Northern Hemisphere regions.
First of all, it is Canada, in the north-east of which the average monthly air temperature is above the norm by 2-4° and more. But in comparison with the south neighbour – USA- this warmth can be considered as not apparent, because in all US territory in May the warm, sometimes hot weather dominated. In all country territory, the average monthly air temperatures exceeded the norms by 2° and more, in the centre and Pacific coast – by 4-6° and more. In some places, the temperature was higher 35°. Warm air was transferred far to the east to the Atlantic ocean, in subtropical latitudes of it the May average air temperature exceeded the norm by 2-4°. In USA, the last May became the warmest one on the record in the country. The previous record achievement of the average monthly air temperature was exceeded by more than 0.5°. In Mexico, it was very warm, especially in the north of the country.