Category Archives: wind

Winds from hurricanes, typhoons, tropical cyclones and land gales

Temora Storm Complex 27th November 2017

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Temora Storm Complex 27th November 2017

A few of the higher resolution pics of the Temora storm complex from SW of Temora today. A line of convergence occurred near Narrandera. These literally took off as we passed under them. The main core was further south so we took note of its structure. After some time I noted that the precipitation was persistent and we decided to check it out. This lead to the main chase. Consolidated base and inflow outflow interaction. Lightning caused a grass fire with thin plume rising under the updraft. Unfortunately we had to head back and leave a long lived storm complex go!

temora storm

Storm SW of Temora cranking up. Lightning started a fire - smoke plume below base

Hailstorms near Luddenham 24th November 2017

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Hailstorms Luddenham 24th November 2017

Higher resolution of the hailstorms Luddenham - pictures are provided here and brief chase report

After a very warm day, storm towers that were already developing spread further northeast towards the Sydney basin. As the sea breeze ventured towards the west, north west winds from outflow of previous storms over the mountains and of course outflow from cells near Badgerys Creek, a triple point allowed for sufficient convergence promoting the development of another storm. This rapidly dumped very heavy rain and hailstones.

Just was lucky for a change and only had to chase 10 minutes away from school/work. Parked and time-lapsed at Luddenham and watched as the new base developed overhead.

This would dump and form a black core on radar which produced hail to under 2cm (perhaps up to 1.5cm based on hits on the car) as we passed through and then filmed pea sized hailstones. Traffic was horrendous so the new core further north was virtually impossible to get through with the storm collapsing. Thanks for the drive from Rodney once again.

Severe Sydney Storms hits St Clair 22nd March 2017

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Some severe storms hit St Clair during the afternoon with hail, very heavy rain and some powerful winds causing blackouts and traffic chaos. The storms developed over the Blue Mountains southwest of Sydney and moved rather quickly towards the Sydney region. A severe thunderstorm warning was released by the Bureau of Meteorology for storm winds large hailstones and heavy rainfall. Although the hail size reached the severe threshold of 2cm in some suburbs, the more significant threat were the winds. The worst damage seem to occur in the suburb of Whalan with debris and trees also reported in Glendenning and St Clair. Downburst winds known as microbursts descend rapidly from thunderstorms and can sometimes accelerate and spread out at the surface. Winds of about 100km/h resulted in trees being felled and branches stripped from trees across the suburbs.

After a parched summer, the region was still saturated from heavy and persistent rainfall in previous weeks. Severe runoff was quite widespread and some roads underwater.

The storms moved towards the coast and seemed to weaken as they progressed northeast to Gosford and Newcastle.