Residents and motorists can expect to find warning signs and, in places, salt water over a number of streets in the region this week.
Signs may be set-up by Moreton Bay Regional Council in low-lying areas such as Scarborough, Bribie, Beachmere, Griffin, Toorbul and White Patch.
It is caused by a "super new moon" with lower pressure, allowing water from Deception Bay to be pushed onto land through stormwater drains.
According to the Forbes magazine, the earth, moon and sun are in alignment, with the moon closest to the earth since 1030 – that’s 992 years ago.
The next time this will happen will be in 2368, the magazine says.
Yesterday’s (Sunday) morning high tide (Brisbane Bar) was just after 10am at a level of 2.77m. Today, at around 10.50am, it was expected to be 2.79m.
Tuesday will see a high tide of 2.74m, at about 11.35am and on Wednesday at 12.19pm a level of 2.62m.
Yesterday, seawater bubbled out into Reef Point Esp and Second Ave at Scarborough. Deeper water is expected today.
Moreton Bay Regional Council disaster management team has placed an illuminated sign in Reef Point Esplanade saying it was monitoring the tidal flows.
Council workers were also out early erecting "Salt Water Over Road" signs.
High water lapped the Webb Bridge, on Klingner Rd, Kippa-Ring, while nearby a "tinnie" and a canoe bobbed at anchor.
At Fifth Ave, Scarborough, high water lapped the red cliffs, while a tree hung precariously in the water.
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