The Bureau of Meteorology has issued several warnings today after temperatures plummeted this morning and rain set in.

After a high of 28 degrees yesterday, a strong cold front is currently crossing Victoria with the heaviest rainfall and wind expected after 5pm this afternoon. "Rainfall totals of 20 to 50 mm are forecast for the Greater Melbourne catchments with isolated higher totals of up to 75 mm possible," the Bureau said in a warning this morning. To put this in context, Victoria's average rainfall for the entire month of April is 50mm, meaning some areas of the state could see their average monthly rain fall over a 24 hour period.

Damaging wind gusts of up to 110 km/h are expected across south and central districts, and the Bureau is advising anyone near rivers and streams to monitor the latest weather forecasts and warnings and be ready to move to higher ground.

Current emergency information is available at emergency.vic.gov.au. The next severe weather warning will be issued at 5pm AEST at bom.gov.au/vic/warnings.