Remnants of Jangmi Approaching Northern Borneo

Wind shear continues to prevent reintensification of former Tropical Storm Jangmi and the circulation consists primarily of shallow convection.  The system still possesses a well developed cyclonic circulation in the lower atmosphere that is clearly apparent on visible satellite imagery.  At 11:00 p.m. EST on Wednesday the center of the remnants of Jangmi were located at latitude 6.8°N and longitude 118.8°E which put it about 175 miles west-northwest of Jolo in the Philippines, about 140 miles east of Kudat, Malaysia and about 150 miles northeast of Sandakan, Malaysia.  The center was moving toward the west-southwest at 6 m.p.h.  The maximum sustained wind speed was 30 m.p.h. and there were gusts to 40 m.p.h.  The minimum surface pressure was 1007 mb.

A subtropical ridge to the north of Jangmi continues to generate southeasterly winds with speeds near 35 m.p.h. in the upper levels over the system.  The strong upper level winds are shearing the tops of thunderstorms which start to develop near the center and are preventing the redevelopment of Jangmi.  The center of circulation is over warm Sea Surface Temperatures and so convection continues to develop but the strong wind shear keeps it shallow.

Since circulation is comprised almost entirely of shallow convection it is being steered by the winds in the lower level of the atmosphere.  Those winds are likely to continue to carry the circulation in a generally west-southwesterly direction, which would bring it near the northern coast of Borneo in 18 to 24 hours.  It could produce locally heavy rainfall and some flooding may be possible where it makes landfall.