By PDC’s Senior Weather
Specialist Glenn James
Remnants of Tropical Cyclone 19E (Roslyn)…is located approximately 50 miles west-northwest of Monterrey, Mexico – Last Advisory
Tropical Cyclone 05B…is located approximately 312 NM south-southwest of Chittagong, Bangladesh
Northeast Pacific Ocean:
Remnants of Tropical Cyclone 19E (Roslyn) – Last Advisory
NHC Advisory number 17
ROSLYN DISSIPATES OVER EAST-CENTRAL MEXICO
The remnants are moving toward the northeast near 22 mph (35 km/h) and this general motion is expected to continue tonight.
Maximum sustained winds have decreased to near 30 mph (45 km/h) with higher gusts. Further weakening is likely overnight while the remnants lose their identity.
HAZARDS AFFECTING LAND
RAINFALL: Roslyn’s remnants are expected to produce up to an additional inch of rain across northeastern Mexico and an additional 1 to 2 inches of rain across portions of coastal and west-central Mexico. This rainfall could lead to flash flooding and landslides in areas of rugged terrain.
There are no tropical cyclones nor any areas of disturbed weather under investigation by the CPHC
Northwest and Southwest Pacific Ocean, Indian Ocean, Arabian Sea:
North Indian Ocean
Tropical Cyclone 05B (Sitrang)
According to the JTWC Warning number 3, sustained winds were 35 knots with gusts to near 45 knots.
Animated enhanced infrared satellite imagery depicts a partially exposed low-level circulation with extensive deep convection over the northern semicircle. A microwave image reveals shallow banding wrapping tightly into a defined low-level circulation center
Environmental conditions are highly favorable with strong poleward outflow, enhanced by a sharp upper-level trough positioned over central India, low vertical wind shear and warm sea surface temperature values.
Tropical cyclone 05B is forecast to rapidly consolidate under highly favorable conditions as it tracks poleward along the western periphery of the north-south oriented ridge. TC 05B should consolidate quickly with a sharp increase to a peak of 55 knots within the next 24 hours.
After 24 hours, interaction with land and increasing vertical wind shear will contribute to a steady weakening trend and eventual dissipation over Bangladesh by 48 hours. However, the large system is expected to produce heavy rainfall across Bangladesh, including the eastern region near Chittagong and Cox’s Bazar.