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More than 100 thousand lightning strikes lashed northwest WA this week
Ashleigh Madden, Thursday September 12, 2024 - 14:44 AEST
It’s been a very active thunderstorm week in the Pilbara and Gascoyne region, with thousands of lightning strikes detected in the region.
The thunderstorms were triggered by a near-stationary trough sitting along WA’s west coast, paired with an unstable airmass and unseasonably warm conditions.
The images below show the lightning strikes (pink), cloud and rain on Wednesday evening, September 11.
Image: Himawari-9 satellite image, rain and lightning strikes for the four hours leading up to 9pm on Wednesday, September 11
Weatherzone’s Total Lightning Network detected 113,178 strikes within 500km of the Pilbara between Sunday and lunchtime Thursday, September 12.
The most active storm day of the week was Wednesday into Thursday morning, with 53,859 strikes detected in the region in just 36 hours.
During this week so far, 25 to 50mm fell in parts of the Pilbara and Gascoyne districts in these thunderstorms. Mount Vernon in the Gascoyne saw 40mm fall in 48 hours, which is more than 14 times their September average of 2.8mm.
Image: Rain totals for the week ending on Thursday, September 12. Source: Bureau of Meteorology
The lightning was accompanied by this rainfall, which dampened the chance of fires being lit by the strikes in a time of high fire danger. The map below shows no hotspots or going fires in the Pilbara region on Thursday afternoon, September 12.
Images: Himawari-9 satellite image, hot spots and fires at 1:30pm on Thursday, September 12
The image above also shows an atmospheric gravity wave off the northwest coast of WA, which was caused by thunderstorms on Wednesday night.
This pattern will also bring extreme heat to WA's northwest for at least four to five days, elevating fire danger in the region.
Looking ahead, the storms have now eased in the region, however the Kimberley and the NT should see decent thunderstorm activity early next week.
Title image credit: @an.other.perspective/Instagram
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2024
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Giant hail and intense rain lash Qld, NSW
16:32 AEDT Severe thunderstorms have formed over parts of Qld and NSW this afternoon, with reports of hail around 7cm in diameter, intense rainfall and flooding and damaging winds. The combination of a surface and upper-level trough and moisture-laden easterly winds are triggering severe thunderstorms across southeastern Qld and northeastern NSW. The images below show the severe thunderstorms across the region on Wednesday afternoon.
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