Thursday, November 19th, 2009
It is incredible that we have almost repeated the heat wave conditions Victoria experienced earlier this year which produced the catastrophic bushfires. With 850hPa temperatures of 26 to 28C over the next few days, temperatures are sure to rise into the mid-40′s. Given it is still officially late spring, this is record breaking conditions. Drought conditions continue right across the region and with the heat, we have potentially near catastrophic bushfire conditions with the index nearing 100.
I note that you were able to experience an incredible lightning display Wednesday night.
Jimmy
Posted in Drought, Drought Conditions, Dry Weather, Dry Weekend, Heat Wave, Heat Waves, Nsw Region, Nsw Rural Fire Service, heat | Comments Off
Tags: bushfires, Drought Conditions, Few Days, Heat Wave, Late Spring, lightning, Temperatures, Victoria, Wave Conditions, Wednesday Night
Monday, November 2nd, 2009
Storms have been ongoing throughout Victoria over the past couple of days spreading into NSW. Some interesting pulse cells developed with some impressive anvil shields due to deep convection. Temperatures in the upper levels at anvil level have been rather cooler than I have seen it for many years. So the lapse rates in the upper portion of the atmosphere have allowed for some rapid development including the odd overshoot on pulse cells even. This has also enhanced the conditions for hail development once storms can tap into the upper atmosphere. Mid level temperatures have also been rather cool warming up yesterday as the ridge strengthened. We’ll see what happens over the next several days. At least moisture is no issue from now on. Sydney and the North Coast should be in the firing line over the coming days.
Jimmy
Posted in Hailstones, Hailstorm, Hailstorms, New South Wales, Severe Storms, Severe Thunderstorms, South East Australia, South Eastern Australia, Southern Ranges, Storm, Storm Chasing, Storm Events, Storm Reports, Storms, Sydney, Thunderstorm, Weather, moisture, storm chasing storms lightning hailstorms tornadoes severe weather discussion, storm storms tornadoes chasing and hailstorms | Comments Off
Tags: Anvil, Australia, Cells, Convection, Couple Of Days, Firing Line, Hail Storms, Lapse Rates, Mid Level, North Coast, Odd, Overshoot, Pulse, Rapid Development, Severe Storms, Shields, Sydney, Tap, Temperatures, Upper Atmosphere, Upper Portion, Victoria
The Melbourne hailstorm does appear to be unprecedented for Victoria in delivering gorilla sized hailstones. Hailstones up to 10cm diameter were reported by a Bureau observer south east of the CBD. The damage to vehicle and roofs in some areas leaves no doubt there was massive hail. Most other suburbs along the storm track appear to be mainly golf ball size. The very heavy rain also caused widespread flash flooding.