Tropical Cyclone 04B / Invest 93W
Friday, August 19, 2022

Current Snapshot

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By PDC’s Senior Weather
Specialist Glenn James

Tropical Cyclone 04B is located 71 NM west-southwest of Kolkata, India – Final Warning


Northeast Pacific:

There are no tropical cyclones nor any areas of disturbed weather under investigation by the NHC

Central Pacific:

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:

Northwest Pacific Ocean

According to the JTWC, there’s an area of disturbed weather being referred to as Invest 93W, which is located approximately 709 NM southeast of Taipei.

Animated enhanced infrared satellite imagery depicts scattered pockets of deep convection associated with the strong low level convergent flow…and disorganized deep convection with no evidence of a defined low level circulation center.

Environmental analysis reveals marginally favorable conditions for development defined by weak poleward and moderate equatorward outflow aloft, low (5-10 knot) vertical wind shear and very warm sea surface temperature values.

Global models have backed off on the intensification of 93wW but generally agree that the system will slowly meander along a west-northwestward track toward Taiwan./span>

Maximum sustained surface winds are estimated at 10 to 15 knots. 

The potential for the development of a significant tropical cyclone within the next 24 hours remains low.

North Indian Ocean

Tropical Cyclone 04B – Final Warning

According to the JTWC warning number 5…sustained winds are 35 knots, with gusts to near 45 knots

TC 04B is making landfall along the coast of India, 50 NM south ofKolkata. Animated enhanced infrared satellite imagery depicts flaring deep convection and limited convective banding over the southern semicircle.

TC 04B is expected to track generally west-northwestward under the steering influence of the ridge to the north while rapidly weakening due to the frictional effects of land. the system is expected to dissipate by 12 hours.