Friday Morning Situation:
1. The Arabian Sea UAC is now embedded in a weakish trough off the West coast. Centered at around 50 kms South of Mumbai, that is partly on land.
2. A strongish off shore trough from sea level to 850 hpa runs Southwards from the (seasonal) low over the NE states of India. It runs along the coastline upto AP coast. As on Friday morning, due to its strength, it has an embedded vortex at 700 hpa formed off the North AP coast.
3. Due to excessive "high pressure" and anti-cyclone dominance in the NW regions, (normal for this time as SWM has withdrawn from NW), both the above trough lines (1. and 2.) are expected to move Eastwards.
The Arabian Sea trough moves inland, and carries the UAC into South Interior Maharashtra by Friday night. Where it is expected to precipitate thundershowers on Friday/Saturday. It will fade away by Saturday.
Mumbai gets thunder developments on Friday evening with showers drifting into the city and some regions getting localised heavy downpours.
Marked decrease from Saturday in rainfall.
Pune gets more thundershowers next 2 days.
The other East coast trough also moves East. The embedded UAC tags along , but due to conducive conditions, can form a Low in the Central Bay by Sunday.