# Arnab Low Pressure Area Over Bay of Bengal Expected to Intensify

- Link: https://www.weather.lk/low-pressure-area-over-bay-of-bengal-expected-to-intensify/
- Published: 2026-09-20T17:09:35+05:30
- Author: Weather LK

A low-pressure area over the Bay of Bengal is expected to gradually intensify and
move west-northwestwards during the coming days, according to the Tropical Weather
Outlook for the North Indian Ocean issued on **20 September 2026**.

The weather system developed over the **north Andaman Sea and adjoining areas** 
at 1200 UTC on 19 September. By 0300 UTC on 20 September, it had moved into the **
eastcentral Bay of Bengal and adjoining north Andaman Sea**.

According to the outlook, the system is very likely to continue moving west-northwestwards
and strengthen into a **depression over the eastcentral Bay of Bengal on 21 September**.
It is then expected to intensify further into a **deep depression over the westcentral
Bay of Bengal on 22 September**.

The system is likely to continue its west-northwestward movement and could reach
the **westcentral and adjoining northwest Bay of Bengal near the north Andhra Pradesh–
south Odisha coasts around 23 September 2026**.

![](https://www.weather.lk/wp-content/uploads/2026/09/Low-Pressure-Area-Over-Bay-
of-Bengal-.jpg)

Satellite observations from INSAT-3D(S) indicate a low-level circulation over the
north Andaman Sea and nearby areas. Scattered to broken low- and medium-level clouds,
with embedded intense to very intense convection, are present over the **Andaman
Sea and parts of the Bay of Bengal**. Very low cloud-top temperatures have also 
been observed, indicating significant convective activity.

The outlook also notes an upper-air cyclonic circulation over **South Coastal Andhra
Pradesh and the adjoining westcentral Bay of Bengal** at around 0.9 km above mean
sea level.

### Cyclone Formation Probability

The outlook gives the following probability of cyclone formation during the next
168 hours:

 * **Next 24 hours:** Low
 * **24–48 hours:** Moderate
 * **48–72 hours:** High
 * **72–96 hours:** High
 * **96–120 hours:** Very High
 * **120–144 hours:** Very High
 * **144–168 hours:** Nil

Weather conditions remain active over the **Bay of Bengal, Andaman Sea, Arakan Coast,
Gulf of Martaban and Tenasserim Coast**, with scattered to broken clouds and embedded
intense convection.

Residents and maritime interests in the region should continue to monitor official
weather updates as the system develops.