Overall Orange alert Tropical Cyclone for GATI-20
in Somalia

Impact

Tropical Cyclone GATI-20 can have a medium humanitarian impact based on the maximum sustained wind speed,exposed population and vulnerability.

Meteorological source GDACS (JTWC)
Glide number: TC-2020-000232-SOM
Exposed countries Somalia
Exposed population 40 thousand in Category 1 or higher
Maximum wind speed 185 km/h
Maximum storm surge 0.4 m (22 Nov 18:00 UTC)
Vulnerability High (Somalia)

GDACS Score

GDACS alert score for Tropical Cyclones is 0.5 (GREEN Alert), 1.5 (ORANGE Alert), 2.5 (RED Alert)
For more info on GDACS alert score click here.
  Wind Storm surge Rainfall GDACS score
GDACS Current 74 km/h 0.4 m n.a. 0.5
GDACS Overall 185 km/h 0.4 m n.a. 0.5

Maximum winds, storm surge, rainfall (Current: over the next 72 h, Overall: entire TC track)

Wind

74 km/h Current

Up to 370000 people in Tropical storm (see SSHS)

Impact Timeline

Alert Date (UTC) Max Winds (km/h) Population in
Tropical Storm
Population in
Cat. 1 or higher
Countries
Green 1 21 Nov 2020 18:00 74 380 thousand No people Somalia

Bulletin Timeline

Alert Date (UTC) Category Max winds
(km/h)
Population in
Tropical Storm
Population in
Cat.1 or higher
Location (lat, lon) Countries
GREEN
1 21 Nov 2020 18:00 Tropical storm 65 no people no people 10.8, 55.6
GREEN
1 22 Nov 2020 06:00 Tropical storm 74 160000 people no people 10.6, 53.2 Somalia
GREEN
1 22 Nov 2020 18:00 Tropical storm 65 370000 people no people 10.5, 51 Somalia
GREEN
1 23 Nov 2020 06:00 Tropical depression 46 no people no people 10.7, 49.1 Somalia
GREEN
1 23 Nov 2020 18:00 Tropical depression 37 no people no people 10.9, 47.9 Somalia
Actual track of the current bulletin
The alert for forecast greater than 3 days is limited to Orange level.



Exposed population

Countries

Country
Somalia

Provinces

Region Province Country Population
Bari Somalia 430000 people
Sanaag Somalia 420000 people

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft)
Scusciuban CMS 342 Civ. Unpaved No 6500
Bosaso BSA 6 Civ. Unpaved No 3400

Ports

Name LOCODE Country
Dante (Ras Hafun) SODAN Somalia
Handa Somalia
Bosaso Somalia

Rainfall

Rainfall accumulation of the past 24h, as detected by the Global Precipitation Measurement mission of NASA. For more information, see https://www.nasa.gov/mission_pages/GPM/main/index.html.

...

StormSurge

0.4 m

The maximum Storm surge height is  0.6m in Sala Gon, Somalia. This height is estimated for 22 Nov 2020 15:00 UTC .

The JRC has developed an experimental global storm surge model, which is run after each advisory issued by the regional tropical cyclone centres. The calculations are published about 20 minutes after a new advisory is detected by GDACS. The calculations identify the populated places affected by storm surge up to three days in advance, using the forecasted track. When forecasts change, the associated storm surge changes too and alert levels may go up or down. All links, data, statistics and maps refer to the latest available calculation. If the calculation for the last advisory is not completed, the latest available calculation is shown.

Locations affected by Storm surge (48 locations). Calculation based on advisory number 8 of 23 Nov 2020 12:00:00 UTC. (Simulation using 0.5 minute resolution)

Alert Date (UTC) Name Country Storm surge height (m)
22 Nov 2020 15:00 Sala Gon Somalia  0.6
22 Nov 2020 16:00 Ascira Somalia  0.5
22 Nov 2020 14:00 Xaafuun Somalia  0.3
22 Nov 2020 15:00 Hurdiyo Somalia  0.3
23 Nov 2020 15:00 Takhushih Somalia  0.2
23 Nov 2020 16:00 Aylu Eritrea  0.2
22 Nov 2020 14:00 Deh-Cabo Somalia  0.2
23 Nov 2020 15:00 Alela Eritrea  0.2
23 Nov 2020 15:00 Aseb Eritrea  0.2
23 Nov 2020 15:00 Rehayto Eritrea  0.2
23 Nov 2020 15:00 Saylac Somalia  0.2
23 Nov 2020 06:00 Marero Somalia  0.2
23 Nov 2020 16:00 Beraisole Eritrea  0.2
23 Nov 2020 15:00 Mersa Fatma Eritrea  0.2
23 Nov 2020 20:00 Fagal Djibouti  0.1
23 Nov 2020 15:00 Mayyun Yemen  0.1
23 Nov 2020 06:00 Boosaaso Somalia  0.1
23 Nov 2020 15:00 Hundegal Somalia  0.1
23 Nov 2020 14:00 Laasqoray Somalia  0.1
23 Nov 2020 15:00 Bandar Jedid Somalia  0.1
23 Nov 2020 15:00 Rasa Eritrea  0.1
22 Nov 2020 16:00 Bola Cohuan Somalia  0.1
23 Nov 2020 15:00 Loyado Djibouti  0.1
23 Nov 2020 15:00 Murad Yemen  0.1
23 Nov 2020 08:00 Bender Siyaada Somalia  0.1
23 Nov 2020 15:00 Port Smyth Eritrea  0.1
23 Nov 2020 15:00 Cumbeiba Eritrea  0.1
23 Nov 2020 15:00 Debealuwa Eritrea  0.1
23 Nov 2020 15:00 Lughaye Somalia  0.1
23 Nov 2020 16:00 Quddam Yemen  0.1
23 Nov 2020 16:00 Dhubab Yemen  0.1
23 Nov 2020 15:00 Berbera Somalia  0.1
23 Nov 2020 15:00 Djibouti Djibouti  0.1
23 Nov 2020 15:00 Khor Angar Djibouti  0.1
23 Nov 2020 08:00 Ceelaayo Somalia  0.1
23 Nov 2020 04:00 Bacaad Somalia  0.1
23 Nov 2020 15:00 Geeri Somalia  0.1
23 Nov 2020 16:00 Behld Eritrea  0.1
23 Nov 2020 15:00 Sabawanaag Somalia  0.1
23 Nov 2020 15:00 Anteral Somalia  0.1
23 Nov 2020 05:00 Aantaara Somalia  0.1
23 Nov 2020 15:00 Harag Jid Somalia  0.1
23 Nov 2020 15:00 Bullaxaar Somalia  0.1
23 Nov 2020 15:00 Mulaax Beyle Somalia  0.1
23 Nov 2020 15:00 Maydh Somalia  0.1
23 Nov 2020 15:00 Carmaale Somalia  0.1
23 Nov 2020 15:00 Ari Adeso Somalia  0.1
22 Nov 2020 14:00 Cadayo Somalia  0.1