Monthly Weather Summary


Station: Maitri, Antarctica

Month: December, 2011



1

Pressure (hPa)

 

 

 

4

Blizzard



1.1

Average

979.5


 

4.1

No. of Blizzards

03


1.2

Highest / Date

988.7

31-12-2011

 

4.2

No. of days with blizzard

06


1.3

Lowest / Date

963.5

09-12-2011

 

4.3

Longest duration (Hours)

64 Hrs.



 



 


 



2

Temperature (° C)



 

5

Sky Condition



2.1

Average

-3.1


 

5.1

No. of days with clear sky

1


2.2

Highest / Date

06.4

24.12.11

 

5.2

No. of days with obscured sky

1


2.3

Lowest / Date

-10.6

03.12.11

 

5.3

No. of days with overcast

16


2.4

Average Max.

-03.1


 


 



2.5

Average Min.

-06.2


 

6

Weather




 



 

6.1

No. of days with fog

0


3

Wind (Knots)



 

6.2

No. of days with pptn.

8


3.1

Average Speed (Kts)

14


 

6.3

Snowfall in mm.

45.5


3.2

Highest Speed (Kts)

45G76

15.12.11

 

6.4

Spl. Phenomena with date (eg: Aurora etc.)

Nil


3.3

No. of days

with speed 23 >= Kts

25


 





HISTORY OF EACH BLIZZARD (Wind Speed >= 23 Kts)


S.No


Date/Time

Extreme Values (with Date/Time)

MSL Pressure (hPa)

Temperature OC

Wind

(Knots)

Commencement

Cessation

Max.

Min.

Max.

Min.

Max.

1

08/0300z

10/1850z

979.4

08/0300z

962.90

09/1500z

-3.0

10/1200z

-8.8

09/0300z

44
09/0000z

G54
09/03z

2

15/0350z

16/1020z

977.9

15/0600z

960.9

15/1500z


-2.5

16/0900z

-6.4

15/1200z

45
15/1200Z,

G76
15/1500z

3

17/0400z

17/2030z

970.5

17/0600z

967.1

17/1200

0.3

17/1200

-0.4

17/0900z

29

17/0900z

G50

17/0900z