Equatorial Storm in the North Indian Ocean

[Matt-hurricanewatcher]

This could be the proof/documented storm you been looking for!

New data out of the NRL says 35 knots with 997 millibars...We got a tropical storm here.

[Derek Ortt]

this appears as if it has to be in cyclostrophic balance, (v^2)/r=PGF as well since the corolis is insignificant at this latitude (insignificant meaning doesnt exist). These types of systems can spin either way depending upon the rotation of the larger circulation. This is the same principle that enables tornadoes to spin in either direction (corolis here is non-existent due to the small size of the system)

[HurricaneBill]

The NIO finally decided to start naming cyclones in their basin. I haven't seen them name one yet, but the first name on the list is "Agni".

[HurricaneBill]

this appears as if it has to be in cyclostrophic balance, (v^2)/r=PGF as well since the corolis is insignificant at this latitude (insignificant meaning doesnt exist). These types of systems can spin either way depending upon the rotation of the larger circulation. This is the same principle that enables tornadoes to spin in either direction (corolis here is non-existent due to the small size of the system)

I thought I heard somewhere that tornadoes spin counterclockwise. However, 1 out of every 1000 tornadoes will spin clockwise. Is that true? 1 out of every 1000?

I've seen footage of clockwise spinners.

[Aslkahuna]

Most Northern Hemisphere tornadoes rotate counterclockwise about 0.1% of them will rotate the other way. The sense of rotation is determined by the vertical shear when it is turned into a vertical column by the developing thunderstorm. Dust Devils, OTOH get their spin from surface roughness and thermal differences and thus can rotate in either sense because they are intially small.

Steve

[Aslkahuna]

The horizontal shear of the monsoon trough which is probably the primary contributor to the vorticity of the system will definitely be stronger than the Coriolis parameter at this low latitude and would counteract it if the system would track across the equator for a while at least. Probably it's just the atmosphere acting as a single entity rather than being divided like we humans want to do. Have to remember that cross equatorial flow is a common characteristic of monsoons.

Steve