Deep Depression ARB 01 (2013)

[1] On November 6, 2013, the Joint Typhoon Warning Center (JTWC) began monitoring a broad low-pressure area over the southeastern Arabian Sea.

Moderate wind shear offset the positive effects of upper-level outflow, though high sea surface temperatures aided further development.

[3] Subsequently, the India Meteorological Department (IMD) classified the disturbance as Depression ARB 01 at 1000 UTC, making it the first tropical cyclone in the Arabian Sea during 2013.

[7] Around this time, IMD assessed the system to have intensified into a deep depression and attained its peak intensity, with three-minute sustained winds of 55 km/h (35 mph) and a barometric pressure of 1002 mbar (hPa; 29.59 inHg).

[9] Continued moderate wind shear displaced most convection to the northwest of the center of circulation, counteracting the favorable poleward outflow prevailing over the cyclone.

The Puntland government concurrently firmed up on its surveillance system, alerting regional authorities, fishermen and other civilians of the impending tropical storm through the local media and via text messages.

[20] According to the Puntland Disaster Management and Rescue committee, the torrential rains inundated littoral towns and faraway rural areas at a higher level than expected.

[22] Photos taken by Puntland Maritime Police Force (PMPF) units using special boats captured images of submerged dirt roads between urban and rural areas, as well as debris from flattened houses and fallen trees that was blocking off parts of the Bosaso–Galkayo highway.

[20] According to OCHA, strong coordination between the Puntland government and humanitarian agencies led to an effective emergency response for the nearly 30,000 people affected by the cyclone.

[20] The International Federation of the Red Cross likewise treated 757 individuals for acute respiratory infections and skin-related diseases over three days,[19] and recommended that clean drinking water be made available to the impacted areas to avert waterborne illnesses like diarrhoea.

Map plotting the storm's track and intensity, according to the Saffir–Simpson scale
Map key
Tropical depression (≤38 mph, ≤62 km/h)
Tropical storm (39–73 mph, 63–118 km/h)
Category 1 (74–95 mph, 119–153 km/h)
Category 2 (96–110 mph, 154–177 km/h)
Category 3 (111–129 mph, 178–208 km/h)
Category 4 (130–156 mph, 209–251 km/h)
Category 5 (≥157 mph, ≥252 km/h)
Unknown
Storm type
triangle Extratropical cyclone , remnant low, tropical disturbance, or monsoon depression
ARB 01 after landfall on November 11