At around 12:30 HKT (0430Z)… a thunderstorm cell brought hails of size more than 5 cm to Shaoguan, Guangdong Province of China… The hail-fall lasted for more than 5 minutes…
Radar imagery shows an intense storm cell with reflectivity of 75 dBZ?!!
Radar Reflectivity 2012-04-15 0424Z (from GRMC)
IR 2012-04-10 1200Z (from NRL)
The low level circulation centre of 90C is now fully exposed… This system should weaken further in the coming few days…
VIS 2012-04-08 0514Z (from NRL)
90C has entered the Northwestern Pacific…
Little change to the organization of 90C… Convection has developed slightly closer to the centre… but it’s still partly exposed…
Sustained wind speed around the centre is about 20 kts based on ASCAT descending pass… Gale force easterlies prevail in the northern quadrant…
The system will move west in the coming 48 hours.. Significant development is unlikely…
IR 2012-04-07 1501Z (from NRL)
ASCAT Ascending Pass 2012-04-07 (from NOAA)
An sub-tropical low (Tropical Disturbance 90C) is located near 18N 178W… just east of the Dateline… Its low level circulation centre is complete but mostly exposed… rather warm and limited DG convection can be found on the eastern quadrant…
Latest ASCAT pass showed sustained wind speed of around 15 kts near the centre… but strong easterlies (above 30kts) prevail in regions north of 20N… Sea surface pressure is estimated to be 1002 hPa…
The system will move west in the coming few days… Further deepening appears unlikely according to numerical guidance…
Over PAKHAR
Photo taken on March 30 near PAKHAR (1201) over the South China Sea…
Please note that PTCC will be “on holiday” from March 30th to April 4th… Alert advisory and general report will not be provided…
During this period, no significant tropical cyclone is expected to affect Hong Kong…
IR 2012-03-26 1132Z (from NRL)
Tropical Disturbance 96W is developing slowly over the South China Sea… VIS imagery during daytime revealed a clear low level circulation centre…
Sustained wind speed around the centre is around 15 kts… estimated from ASCAT descending pass… Strong northeasterlies help speed up the airflow on the northern quadrants…
The system is expected to drift westward in the coming few days… and it may develop into a Tropical Depression later this week… At this moment, this system is NOT a threat to Hong Kong…
VIS 2012-03-18 0801Z (from NRL)
A Tropical Disturbance (94W) has formed to the east of Mindanao, Philippines… near 6N 130E… The system is currently very weak…
No significant development is expected within the next 2 to 3 days…
IR 2012-02-15 1232Z (from NOAA)
Tropical Disturbance 93W is situated near 10N 126E… near the central Philippines… The low level circulation centre is expected to be weak…
The system will move west to west-northwest into the South China Sea later this week… Although significant development is unlikely in the next couple of days… heavy showers can be expected in the Visayas and Mindanao…
People in the Philippines should be aware of possible flash floods…
Happy new year!!
6 years have passed since the establishment of PTCC… (and >10 yrs for former HKTCMC)
Thanks for your support and we’ll continue to provide information and warnings on TC in 2012…
The West Pac is rather calm at this moment… Scattered showers are affecting the seas around Palau and Yap…
IR 2012-01-05 1401Z (from NRL)
香港天文台現時生效警告
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