FLASH FLOOD RISK TO CONTINUE FOR THE COMING 24 HOURS ON THE SOUTH COAST.

Significant rainfall has been observed over the east coast with river levels rising in response to heavy rainfall wrapping around a low in the Tasman.


That low is drifting south tonight, elevating the risk of flash flooding once again to areas that have seen heavy rainfall totals so far this week.


Upper low moving south through the Tasman.

The moisture content is still running very high over the coming 12 hours for the east coast, but once we see the winds ease and the low wash out over the Tasman on Saturday, the air is able to stabalise and dry out, leading to a clearing trend to these regions.


Forecast relative humidity for the next 3 days - Euro Valid May 6th 2021.

High pressure will kick in for the weekend and conditions will dry out. For now the flash flood risk will run until about lunchtime tomorrow with the rainfall intensity dropping off rapidly tomorrow night.


Forecast GFS shows the low moving away over the coming day or so - Valid May 4th 2021. GFS has handled this event the best out of all modelling.

Forecast flash flood risk for the coming 12 hours. This forecast will likely expire by midday on Friday.

Need more severe weather preparations and discussion? Head over the weather matters forum to talk to others who may be in your region. If you need more tailored forecast solutions, email me at karllijnders@weathermatters.org for more details.

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