Simulation of Cyclone ‘Aila-2009’ by Using WRF-ARW Model and Numerical Storm Surge Model - Monitoring and Prediction of Tropical Cyclones in the Indian Ocean and Climate Change - page 261

(2008). Debsarma (2009) made 3-D simulations of storm surges in the Bay
of Bengal.
3. Data Used
Best track information of Aila was taken from Unisys Weather (http://
weather.unisys.com/hurricane/index.html) and University of Hawaii (http://
www.solar.ifa.hawaii.edu/Tropical/tropical.html). Satellite derived parameters
were taken from Colorado State University (http://rammb.cira.colostate.edu/
products/tc_realtime). Three hourly storm centres along with pressure drops,
radii of maximum winds of cyclone Aila from Bangladesh Meteorological
Department (BMD) and USGS ETOPO2 bathymetry data were used as input
in the storm surge model.
4. Severe Cyclonic Storm Aila (23-26 May 2009)
Cyclone Aila was of category 3 in Saffir-Simpson scale that formed in the Bay
of Bengal in 2009. The disturbance became Cyclone Aila on 21 May 2009
about 950 km south of Kolkata, India. The disturbance at this time had a broad
and poorly organized area of deep convection. The system was under favourable
conditions to develop with low vertical wind shear and warm sea surface
temperatures. On 22 May 2009, the disturbance developed further, the low
level circulation centre became stronger and more defined. The satellite imagery
showed further organization and later the deep depression intensified into a
cyclonic storm Aila about 350 km southeast of Sagar Island. Aila became a
severe cyclonic storm for a short while at 06 UTC on 25 May 2010 and made
landfall at its peak intensity (60 kts, 967 hPa) between 08 and 09 UTC (Fig. 1).
Fig. 1: Observed and Model track of Cyclone Aila-2009.