Low pressure system over Central West WA on Wednesday.

Tropical Storm Fung-Wong building over the Philippine Sea. The system is expected to intensify and cross northern parts of the Philippines early next week.

Typhoon Fung-wong / Uwan near the Philippine coastline.

Dry, stable air in the wake of a cold front will produce late-season frost across prone parts of south east Australia on Wednesday morning.

Another burst of strong westerlies (then shallow coastal southerlies) across eastern NSW on Tuesday, before dry and rapidly stabilising air brings late-season frost to the ranges and slopes.

This cold front, and tonight's late-season frost under the dry air behind it, are the latest effects of ongoing negative AAO/SAM on south east Australia.

An incursion of dry, polar air brought widespread frost and a swag of November record low temperatures across south east Australia on Wednesday morning. Records for stations with 15+ years of history are highlighted.

November top-up for the Snowy Mountains. link.dataspace.copernicus.eu/lqip

Cold front ploughing across TAS on Thursday.

Himawari's high temporal resolution "target" area monitoring the tropical low developing over the Timor Sea.

The fingerprint of negative AAO/SAM - sub-Antarctic westerlies pushed northward. Differing alignment of planetary waves has brought slightly cooler air masses to southern Australia during the first half of November, compared with October.

Tropical #CycloneFina - the Australian region's first of the season - north of the Top End. bom.gov.au/warning/tropic…

Convection associated with Tropical #CycloneFina. The system may be over Van Diemen Gulf, north east of Darwin, by Saturday. bom.gov.au/warning/tropic…

Comparison between projections from ECMWF HRES and BOM ACCESS-G for Tropical #CycloneFina. Official forecast track at bom.gov.au/warning/tropic….

Tropical #CycloneFina's cirrus shield concealing a well-defined eye feature.

Tropical #CycloneFina doing some rebuilding on Thursday. Consolidation is expected on Friday, with a return to category 2 intensity.

Tropical #CycloneFina approaching the Top End's Cobourg Peninsula.

Severe Tropical #CycloneFina - now category 3 - over Van Diemen Gulf, north east of Darwin. bom.gov.au/warning/tropic…

Latest projections from BOM ACCESS-C and ECMWF HRES for Severe Tropical #CycloneFina. Both already a little off the mark; ACCESS closer. Official forecast track at bom.gov.au/warning/tropic….