Friday, 1 December 2017 - Monthly Climate Summary for New South Wales - Product code IDCKGC15R0

New South Wales in November 2017: warmer than average overall and thunderstorms throughout

November in New South Wales received average rainfall overall, with warmer than average temperatures. Most regions experienced thunderstorms during the month, as easterly winds brought moist tropical air across the State.

Average rainfall overall with an active thunderstorm season

• Rainfall was around average for the State overall, 6% above the long-term mean
• Above average totals were recorded in parts of the Lower Western and Riverina districts, the South Coast, and patches of the north west; slightly below average totals were recorded west of Sydney into the Hunter District, and in pockets of the north and west
• The highest totals were recorded in the Northern Rivers district; over 200 mm of rainfall were recorded at Ballina and Mullumbimby for the month, including 89 mm in 60 minutes at Ballina on the 5th
• The driest location was Winnathee in the State's far west, with 0.6 mm
• Thunderstorms and associated heavy falls were observed across the State throughout the month; reports included golf-ball sized hail in the Northern Rivers and Hunter Valley regions, flash flooding in the central west, and tornadoes around the Riverina
• Some sites in the east had their highest November daily rainfall on record in the 24 hours to 9am on the 18th

A cool start but warm finish

• Maximum and minimum temperatures were above average in south and west of the State, but below average along the northeast coast into the Hunter and Northern Tablelands districts as a result of persistent easterly flow
• The State maximum temperature was 1.25 °C above average, very similar to last year (1.26 °C)
• The mean minimum temperature was 1.37 °C above average, and more than 1.5 °C warmer than the cool nights of November 2016
• While the month ended warmer than average, a number of stations in the east experienced record long runs of consecutive days below 25 °C from early in the month: Armidale had 16 consecutive days below 22 °C, while many other stations in the Illawarra, Metropolitan and the Hunter districts experienced more than two weeks without a day over 25 °C, or a night above 15 °C

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top

Maps
	Observed	Anomaly	Decile rank
Total rainfall
Mean daily maximum temperatures
Mean daily minimum temperatures

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* note: there are gaps in the historical record at this site, so it is possible a higher value has gone unreported

* note: there are gaps in the historical record at this site, so it is possible a lower value has gone unreported

Extremes Maps Records Summaries Important notes the top

Extremes Maps Records Summaries Important notes the top