Weather

06
Apr
6:41 UTC

Asia Tactical (UPDATE): Tropical Cyclone Seroja likely to strengthen, make landfall in Western Australia by April 8; remain cognizant of local updates

Please be advised:

  • Indonesia’s Meteorology, Climatology, and Geophysical Agency (BMKG) stated that Tropical Cyclone Seroja was recorded leaving the East Nusa Tenggara (NTT) during the early morning hours (local time) on April 6 and is expected to move in the southwest direction away from Indonesian territory. The system is expected to strengthen over the next 24 hours until April 7. BMKG forecast heavy rains, strong winds, and high tides in the waters near the NTT region until April 7. 
  • The country’s National Disaster Management Agency (BNPB) announced that the death toll from the floods and landslides in NTT crossed 130  with over 70 people missing. Nearly 8,500 flood evacuees are at temporary shelters in the region, with the largest number of evacuations carried out in East Sumba Regency where over 7,000 people were displaced. 
  • Heavy rainfall and strong winds have impeded relief and rescue operations in Indonesia and neighboring East Timor. East Timor confirmed 27 flood casualties while the flood situation in Dili remains serious, with April 5 reports indicating that roads outside the Presidential Palace were also rendered impassable. Rains are expected to continue until April 7.
  • Tropical Cyclone Seroja is expected to gain strength as it heads away from Indonesian waters and towards Western Australia. Weather authorities forecast that Seroja could develop into a Category 3 severe tropical cyclone by April 7. The north coast of Australia is likely to experience rough sea conditions and strong winds as Seroja draws close. From April 8-9, Seroja is expected to merge with another low-pressure area approaching Christmas Island. While the exact path of the weather systems remains uncertain, it is expected to affect the Gascoyne and Pilbara coasts.

Recommendations

  1. Those operating or residing in Australia, East Timor, and Indonesia on April 6 and over the coming days are advised to avoid nonessential travel to the aforementioned locations given the reported inclement conditions and ongoing emergency response operations.
  2. Remain cognizant of local authorities’ updates and the risks associated with outdoor travel. These include tree collapses onto roads and railway tracks, as well as electrocution caused by open circuits.
  3. Do not walk or drive through flood waters.
  4. In case of flood warnings, immediately evacuate to higher ground. Once higher ground has been reached, do not attempt to evacuate the wider region alone and seek professional assistance with evacuations. 
  5. Allot for disruptions to traffic and public utilities, and reconfirm all flight and overland travel itineraries. 
  6. Avoid contact with flood water, including through bathing and drinking. Ensure adequate supply of bottled water; boil water before consumption as a last resort.
  7. Practice increased health and sanitation precautions to mitigate risks of contracting waterborne diseases during the flooding. Drink only bottled water and avoid exposure to flood water and natural bodies of water when possible.
  8. Confirm that places of stay have working generators in case of power outages, while packing sufficient batteries and flashlights.
  9. Charge essential electronic devices such as cellular phones, laptops, and tablet computers ahead of the planned power outage, and initiate energy-saving functions on these devices as needed. Disconnect all surge-prone devices such as computers, televisions, and appliances to prevent potential damage.
AFFECTED AREA Australia; East Timor; Indonesia
INCIDENT RISK LEVEL High
STRENGTH OF SOURCE Credible

Please be advised:

  • Indonesia’s Meteorology, Climatology, and Geophysical Agency (BMKG) stated that Tropical Cyclone Seroja was recorded leaving the East Nusa Tenggara (NTT) during the early morning hours (local time) on April 6 and is expected to move in the southwest direction away from Indonesian territory. The system is expected to strengthen over the next 24 hours until April 7. BMKG forecast heavy rains, strong winds, and high tides in the waters near the NTT region until April 7. 
  • The country’s National Disaster Management Agency (BNPB) announced that the death toll from the floods and landslides in NTT crossed 130  with over 70 people missing. Nearly 8,500 flood evacuees are at temporary shelters in the region, with the largest number of evacuations carried out in East Sumba Regency where over 7,000 people were displaced. 
  • Heavy rainfall and strong winds have impeded relief and rescue operations in Indonesia and neighboring East Timor. East Timor confirmed 27 flood casualties while the flood situation in Dili remains serious, with April 5 reports indicating that roads outside the Presidential Palace were also rendered impassable. Rains are expected to continue until April 7.
  • Tropical Cyclone Seroja is expected to gain strength as it heads away from Indonesian waters and towards Western Australia. Weather authorities forecast that Seroja could develop into a Category 3 severe tropical cyclone by April 7. The north coast of Australia is likely to experience rough sea conditions and strong winds as Seroja draws close. From April 8-9, Seroja is expected to merge with another low-pressure area approaching Christmas Island. While the exact path of the weather systems remains uncertain, it is expected to affect the Gascoyne and Pilbara coasts.

Recommendations

  1. Those operating or residing in Australia, East Timor, and Indonesia on April 6 and over the coming days are advised to avoid nonessential travel to the aforementioned locations given the reported inclement conditions and ongoing emergency response operations.
  2. Remain cognizant of local authorities’ updates and the risks associated with outdoor travel. These include tree collapses onto roads and railway tracks, as well as electrocution caused by open circuits.
  3. Do not walk or drive through flood waters.
  4. In case of flood warnings, immediately evacuate to higher ground. Once higher ground has been reached, do not attempt to evacuate the wider region alone and seek professional assistance with evacuations. 
  5. Allot for disruptions to traffic and public utilities, and reconfirm all flight and overland travel itineraries. 
  6. Avoid contact with flood water, including through bathing and drinking. Ensure adequate supply of bottled water; boil water before consumption as a last resort.
  7. Practice increased health and sanitation precautions to mitigate risks of contracting waterborne diseases during the flooding. Drink only bottled water and avoid exposure to flood water and natural bodies of water when possible.
  8. Confirm that places of stay have working generators in case of power outages, while packing sufficient batteries and flashlights.
  9. Charge essential electronic devices such as cellular phones, laptops, and tablet computers ahead of the planned power outage, and initiate energy-saving functions on these devices as needed. Disconnect all surge-prone devices such as computers, televisions, and appliances to prevent potential damage.
AFFECTED AREA Australia; East Timor; Indonesia
INCIDENT RISK LEVEL High
STRENGTH OF SOURCE Credible