BOM

Storms brewing as inland temperatures soar

SATURDAY 10.42AM: THUNDERSTORMS are expected across the Central Highlands and Capricornia border regions this afternoon as temperatures climb into the high 30s.

Areas around Gogango, Biloela, Westwood, Monto, Theodore, Wowan and Dingo are likely to experience storm activity late this afternoon and evening.

All eyes are on a slow moving trough, which is likely to bring much needed rainfall to the region. 

Detailed modelling is expected this evening and will provide the best indication of rainfall totals expected in the early part of next week. 

Current indications suggest upwards of 100mm is possible.

Weather forecaster, Mike Griffin says very warm overnight temperatures in Rockhampton (24.2), Yeppoon (26.7) and Gladstone (24.9) made for a very humid start to the last day of the year.

He says already this morning one or two early showers dropped 1-2mm at Shoalwater Bay and showers are starting to develop around Byfield and heading east towards North Keppel Island.

"Already there are signs of cloud development around Mt Morgan and Mt Larcom…this is part of a north easterly moist and steamy airstream associated with the monsoon trough in the north."
 

11am: Thundery rain areas may develop around the Capricorn Coast on Monday (see graphic below) with possible heavy falls in the CQ region as the monsoonal trough continues to move across the state.

The Bureau of Meteorology said this morning that the monsoonal flow over the far north of the state would likely start to weaken on Monday while the upper low will remain slow moving over the northern interior of the state.

"A deep trough will extend over the interior from this low, resulting in a high chance of showers and storms to its east through northern and central districts and into the southeastern interior of the state," the BOM said in its extended state forecast.

"Thundery rain areas may develop about the central and Capricornia coasts with possible heavy falls though this is dependant on the location and movement of a coastal trough."

The BOM's computer modelling  is predicting more than 100mm of rain for parts of CQ next week however there is some uncertainty about that forecast at this time.

The Bureau of Meteorology's computer modelling forecasts up to 50mm of rain for the Rockhampton Region on Monday as a monsoonal trough moves through the state. There is some uncertainty about this forecast at this time.
The Bureau of Meteorology's computer modelling forecasts up to 50mm of rain for the Rockhampton Region on Monday as a monsoonal trough moves through the state. There is some uncertainty about this forecast at this time. Frazer Pearce

 

11am, Thursday. A MONSOONAL trough could dump more than 100mm of rain on the Rockhampton and Capricorn Coast regions next week.

Experienced Rockhampton-based weather forecaster Mike Griffin said people in the area should prepare for possible flash flooding from Monday as the system moves down the coast.

"Early next week part of the monsoon is going to develop up in the gulf and it's going to roll down the coast with a low developing," Mr Griffin said.

"There is a lot of rain expected for the Northern Queensland coast which could eventually affect the Central Queensland coast and then roll on down Brisbane."

Computer modelling on the The Bureau of Meteorology this morning shows falls of 400mm are possible between January 2-5 but Mr Griffin said that appeared to be unlikely at this stage.

"I don't know about 400mm, but 100mm is possible," Mike said.

"They're models and they're only limited to what they can do... to get the tropics right is very difficult."

"The heavy falls (in CQ) next week will be patchy."

 

Flash flooding, as seen here in an Emu Park downpour in 2014, is possible. Courtesy Sari Beasley
Flash flooding, as seen here in an Emu Park downpour in 2014, is possible. Courtesy Sari Beasley

Mr Griffin said there had been extremely heavy falls recorded near Sarina, south of Mackay this week.

"(About) 36 hours ago they had 119mm, some bloke reckons he got 200mm at his place," Mike said.

The bureau's forecast for next week includes "some uncertainty surrounding the movement of the monsoonal trough" after the weekend.

"These systems (upper troughs) will likely combine to result in a deep trough forming over the interior of the state, extending a deep moist air mass through northern, central and eastern districts with some showers, rain areas and storms likely.

" Some heavy falls are likely in this scenario, particularly with thunderstorms."

There were good 24 hour rainfall totals recorded at Hedlow (42mm) and Pacific Heights (40mm) (to 9am Tuesday) this week.

For current storm warning updates check the Bureau of Meteorology website.

The gallery below shows previous flooding events.



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