Tropical Systems Flashcards
Wind speed in a tropical severe cyclone is
(a) 21-33 kt
>(b) 48-63 kt
(c) 17-27 kt
Fronts are characteristic of:
(a) Tropical cyclone
>(b) Extra-tropical depressions
(c) Monsoon depressions
In a mature tropical cyclone, the eye area is characterised by:
(a) moderate winds and heavy rains
(b) hurricane force winds and squalls
>(c) calm wind, little clouding and practically no rainfall
Cyclonic storm cross Tamil Nadu coast in:
> (a) Oct-Nov
(b) Jul- Aug
(c) Feb -May
Cyclonic storms form over Indian seas during
(a) SW monsoon
(b) Winter Season
>(c) Pre-Monsoon & Post Monsoon
TRS occurs over Indian seas in: -
(a) Equatorial Region
>(b) 5 – 15° N
(c) 0-5°N
In the Bay of Bengal during the months of Jul, August, Monsoon Depression form
> (a) Over Head Bay
(b) Central Bay
(c) South Bay
In a monsoon depression maximum weather occurs in
(a) SE sector
(b) NW sector
>(c) SW sector
During re-curvature maximum weather in a monsoon depression occurs in
(a) SE sector
(b) NW sector
(c) SW sector
>(d) NE sector
On whatever compass course the cyclone is approached, strong winds from the port indicate that the centre lies somewhere
> (a) Ahead
(b) Behind
(c) Port
(d) Starboard
The well-developed extra tropical cyclonic storm is composed of two main frontal systems and an occluded front, which varies in extent:
(a) A stationary Front followed by a warm front
(b) A low with a warm front radiating out Southwards followed by a cold front.
(c) A warm front and an occluded front
(d) None of the above
(a) A stationary Front followed by a warm front
>(b) A low with a warm front radiating out Southwards followed by a cold front.
(c) A warm front and an occluded front
(d) None of the above
Cyclonic storms are confined almost entirely to the
(a) Latitudes near Equator
>(b) Tropical latitudes
(c) Polar lat
(d) Mid lat.
The weather expected in a well developed cyclonic storm is:
(a) Moderate Weather
>(b) Stormy weather
(c) Clear skies
(d) No wind or temperature Change
After entering land, the Cyclones gradually dies down
(a)True
(b) False
> (a)True
(b) False
The ……… is the most dangerous part of the cyclone is
> (a) eye wall
(b) eye
(c) Outer storm area
(d) complete cyclone
No Cyclones form
(a) At Poles
>(b)At Equator
(c) At Lat 40 deg
(d) All these
Average life of a tropical cyclone in India is
(a) 10 Days
(b) 6-8 Days
>(c)3-4 Days
Cyclones in India are mostly of intensity
(a) Severe
(b) Very Weak
>(c) Moderate
Eye of a Cyclone is surrounded by
(a) Shelf Clouds
>(b) Wall Clouds
(c) Rotor Clouds
(d) Roll clouds
Cyclones in Indian region are less intense because
> (a)They have a very short travel over the sea
(b) Sea surface temp. are not high
(c) India is close to Equator
Surge is sudden strengthening of wind in the ……. air mass
> (a) Same
(b) Different
(c) Both
Surge and Shear Line are features of ……… Monsoon
> (a) Vigorous
(b) Weak
(c) Moderate
Peninsular discontinuity occurs along
(a) West Coast
(b) East coast
(c) Central Peninsula
(a) West Coast
(b) East coast
>(c) Central Peninsula
peninsular discontinuity occurs during
(a) Monsoon
(b) NE Monsoon
>(c) Pre Monsoon
Surge is also
(a) Velocity Divergence
>(b) Velocity Convergence
(c) like ITCZ
In a depression the wind speed is
(a) <17kt
(b) 34-47 kt
>(c) 17-27 kt
(d) 48-63 kt
In a CS the wind speed is
(a) <17kt
>(b) 34-47 kt
(c) 17-27 kt
(d) 28-33 kt
A monsoon depression slopes ….. with height
(a) SE
(b) NW
>(c) SW
(d) NE
Average life of a monsoon depression is
(a) 2-3 days
(b) 8-9 days
>(C) 3-5 days
(d) 10-12 days
Monsoon depressions move faster over
(a) Sea
(b) Plains
(c) Hills
(d) Rivers
(a) Sea
>(b) Plains
(c) Hills
(d) Rivers
For formation of a CS sea surface temperature should be
> (a) 26-27°C
(b) 23-24°C
(c) 24-25°C
(d) 30°C
In extra tropical cyclone family there are 3-4 CS or depressions, one to the ……. of the other
(a) SE
(b) NW
>(c) SW
(d) NE
In TRS the central pressure is about
(a) 1002-1010hPa
>(b) 1000-900 hPa
(c)1010-1020hPa
TRS develop over
(a) Sea
(b) Land
(c) Islands
(d) at equator
> (a) Sea
(b) Land
(c) Islands
(d) at equator
TRS develop over ….. deg Lat
(a)0-5
>(b)5-15
(c) 25-30
(d) 30-40
In TRS pressure gradient is very steep upto a radius of
(a) 30 km
(b) 50 km
>(c) 100 km
(d) 400 km
Extra Tropical Storms originate in
(a) Equatorial Front
(b) Tropical Front
>(c) Polar Front
Extra-tropical Storms generally move in the direction
(a) S to E
>(b) W to E
(c) S to W
(d) E to W
A Tropical Cyclone moves ……. in a day
> (a) 300-500 km
(b) 500-700 km
(c) 700-900 km
A Tropical CS has outer storm area of about
> (a) >400 km
(b) >700 km
(c) >900 km
