Tropical Cyclone Sagar - May 2018
A tropical cyclone formed in the Gulf of Aden between Yemen and northern Somalia on 16 May 2018. The cyclone system caused heavy rains along the coast of Puntland on 17 May. Flash flooding was reported in the Bari region, which were not limited to seasonal riverbeds. The road linking Bossaso and points south has reportedly been affected. There are also reports of some fishing boats having been washed away by waves off the coast of Sanaag region, which along with Sool are disputed between Somaliland and Puntland. The two authorities have been engaged in an armed standoff in Sool that had displaced almost 10,000 people prior to the storms arrival, further complicating an already complex humanitarian picture. By 18 May, the cyclone had gained strength, reaching tropical storm-wind levels and assigned the name Tropical Cyclone Sagar. Heavy rains are projected for the escarpment and plateau of Somaliland. (OCHA 19 May 2018)
In Somaliland, the largest concentration of fatalities were reported in coastal Galbeed and Awdal, where the cyclone made landfall. Houses were destroyed, and livestock washed away. The heavy rains and subsequent flooding are hindering humanitarians’ ability to access some of the areas affected by the cyclone to assess the extent of the damage and provide assistance. In Puntland, severe weather conditions also resulted in fatalities, livestock loss and the destruction of farms, property and infrastructure including fishing boats...Meanwhile, forces from Puntland and Somaliland have been engaged in an armed standoff in Sool that had displaced almost 10,000 people prior to the cyclone’s arrival, further complicating an already complex humanitarian picture. By the morning of 20 May, meteorological authorities were reporting that Sagar was beginning to weaken into a tropical depression. The tropical depression itself has remained over parts of Ethiopia, Djibouti and north-west Somaliland, about 140 kilometres from Hargeisa. (OCHA , 20 May 2018)
This map illustrates satellite detected potentially damaged buildings within the affected neighborhoods in Djibouti, Djibouti District, Djibouti Region, Djibouti. Potentially affected neighborhoods were defined according to field data. The analysis was conducted by analyzing a post-event Pleiades image acquired on 23 May 2018, after the passage of Tropical Cyclone Sagar-18, compared with a pre-event WorldView-2 image acquired on 23 April 2018.
UNITAR-UNOSAT, following the request of UNOCHA Djibouti , has performed a flood analysis to illustrate the potential impact in the wake of Tropical Cyclone Sagar-18 over the city of Djibouti.
UNOSAT analysis illustrates the potential satellite detected water extent within the city of Djibouti and classifies the areas as:
This map illustrates satellite-detected flood water extent within the city of Djibouti, Djibouti District, Djibouti Region, Djibouti.
UNITAR – UNOSAT, following the request of UNOCHA Djibouti , has performed a rapid flood assessment to illustrate the impact caused after the passage of Tropical Cyclone Sagar-18 over Djibouti & Balbala. For this rapid flood analysis UNOSAT has used post-event cloud free images of the area, collected on the 20th & 21st May 2018, 3 meters resolution.
Expected Landfall in Ethiopia: Sunday 20 May, 14:00 local time
Tropical Storm SAGAR will likely have transformed into a Tropical Depression when it reaches Ethiopia - expected for Sunday early afternoon. Wind speeds will reach up to 56 km/h. SAGAR is expected to cause increased rainfall when it hits.
Following a Tropical Cylcone in the gulf of Aden, heavy rains that led to flash floods were experienced in Bari region of Puntland in the last 12 hours. The rains are expected intensify during the next two days in most parts of Puntland and Somaliland with a reduction on 21/05/2018. Flash floods and strong winds will be experienced during this time in these areas.