Typhoon HAGUPIT/Ruby – the tracks spread

Weather 2014-12-04 JMA-1

Typhoon HAGUPIT/Ruby – the tracks spread now more and more. The southernmost and fastest track is maintained by Japan’s JMA. US’s JTWC on the other side sees the typhoon slowly going towards northern Luzon. The other agencies spread between the two extremes.  Typhoon HAGUPIT/Ruby becomes more and more a showdown between the forecast models. Meanwhile Typhoon HAGUPIT/Ruby has been upgraded to Super Typhoon Category 4.

Weather 2014-12-04 Multi-1

The only thing that is clear at this moment is the important role of the high pressure areas in continental Asia. These high pressure areas prevent Typhoon HAGUPIT/Ruby moving northwards. If they weaken, the storm will follow the American track, if they rest stable the storm will follow the Japanese track.

The Pressure map

This is the reason why now all eyes are on the isobars maps covering eastern Asia.

High Pressure Area over East Asia High Pressure Area over East Asia
High Pressure Area over East Asia High Pressure Area over East Asia

The red circles show the positions of the dominant high pressure areas in the last 24 hours. Follow them from top left to down right to see the change. You may enlarge the maps by clicking on them.  Current isobar map is here.


Typhoon HAGUPIT/Ruby Storm data

Name (INTL. / local): HAGUPIT/Ruby
Class: Super Typhoon Cat.4
Time/Date of observation: 05:00 AM on December 4, 2014
Location of Center: 9.6º North 134.4º East
Moving Direction and Speed: West – Northwest @ 31 km/h
Moving towards: Siargao / Samar
Distance from the Philippines: 975 km E of Surigao
Estimated Date / Time of Landfall: Saturday / Sunday
Max. Wind Speed near Center: 220 km/h
Peak Wind Gusts: 280 km/h
Minimum Central Pressure: 926 hPa
Diameter: 990 km
24h Rainfall near Center: 100 – 300 mm
Max. Wave Height: 10 – 15 m
Here you find how to read and understand this data

Next update around noon today

Nearly real-time storm information


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