Tropical storms are quite rare in the Atlantic at this time of the year, which
is why the formation of Tropical Storm Arlene in the north Central Atlantic
yesterday, Thursday April 20th at 5:00 pm EDT, was so unusual. The National
Hurricane Center (NHC) noted that Arlene became only the 2nd tropical storm to form in the Atlantic during the month of April in the entire satellite era, the other being Tropical Storm Ana back in 2003.
Tropical Storm Maarutha became the first tropical cyclone of 2017 in the Bay of Bengal when it formed on April 15, 2017. Maarutha intensified slightly as it moved northeastward toward Burma (Myanmar). Maarutha reached it's maximum sustained wind speed of 45 kts (52 mph) over the open waters of the Bay Of Bengal.
Tropical cyclone Debbie formed in the Coral Sea northeast of Australia om March 24, 2017. Debbie intensified and had hurricane force wind speeds within a day of formation. While headed toward northeastern Australia Debbie reached it's maximum sustained wind speeds estimated at over 100 kts (115 mph) on March 27, 2017 (UTC). Tropical cyclone Debbie came ashore on March 28th and brought destructive winds and extremely heavy rain to northeastern Australia. It was reported that heavy rainfall caused flash flooding that cut off a coastal town and covered several roads in Queensland.
Tropical cyclone Enawo hit Madagascar on Tuesday with powerful winds and drenching rain. At least three people have been reported killed by the tropical cyclone. Floods and landslides are likely as Enawo moves southward down the center of Madagascar. Tropical cyclones rotate in a clockwise direction in the southern hemisphere so the eastern side of Madagascar will have a strong onshore flow. The extreme amount of moisture flowing onto Madagascar from the Indian Ocean is expected to produce flooding and landslides.