Monday, December 26, 2011

Chennai under Threat - Cyclone Thane, a Category 1 Storm as per ADT


Wow what a speedy intensification the storm has gone through last 6 hours. It took 12 hours for the storm to intensify from T 2.0(30 kts) to T.30 (45 kts). But it took just past 6 hrs to intensify from T 3.0 (45 kts) to T 4.0 (65 kts). Some of the Salient status of the storm are as follows.


Intensity – 4.0
Pressure – 985 mmb
Wind Speed – 65 kts
Location – 11.06 N 87.76 E
Scene Type – EYE/L

2 comments:

Anonymous said...

What does the term intensity =4 indicates?

Pradeep said...

Dvorak Scale:
Scale of eight full-number and seven x.5 categories used to estimate tropical cyclone intensity based on the analysis of cloud patterns in visible and infrared imagery from geostationary and polar-orbiting satellites. JTWC primarily uses the Dvorak technique.
T-Number Estimated Intensity (kt)
1.0 25
1.5 25
2.0 30
2.5 35
3.0 45
3.5 55
4.0 65
4.5 77
5.0 90
5.5 102
6.0 115
6.5 127
7.0 140
7.5 155
8.0 170