Omani port city of Salalah is likely to be heavily affected with heavy rainfall.
Heavy to moderate rains, which have continuously lashed the Khat and Al Gheil areas over the last two days, have filled several valleys.
According to Emiratis and other residents, it rained continuously for two hours from 12.30pm to 2.30pm on Tuesday. It rained on Wednesday morning, too.
The system will support survey engineers in three municipalities in the Capital: Abu Dhabi City, Western Region and Al Ain City.
The directorate has also called on motorists to refrain from commuting on Abu Dhabi roads until visibility improves.
Some low clouds will appear to the east over the mountains during the afternoons.
The mercury was significantly down at most southern areas of the emirate that the locals and residents went out to enjoy the rare summer rains and clean weather after the end of the storm.
The portal, an online observatory, is open for all but registered users will have access to advanced functions.
NCMS has urged motorists to exercise caution, reduce speed and leave enough space between vehicles.