Australia -- Queensland Weather Update

MELBOURNE - Apr 20/18 - SNS -- The current forecast for the state of Queensland was released by Australia's Bureau of Meteorology.

Weather Situation
A surface trough extends from the northwest of the state down through western Queensland. A high pressure system in the Tasman Sea will move slowly eastwards over the next few days, extending a firm, although slowly weakening ridge over eastern Queensland. A major upper trough will develop eastern Queensland in the next few days, eventually evolving into a slow moving upper low over southeastern Queensland by Sunday and early next week. This will induce some deepening of the surface trough just off the southeast coast; a low is likely to develop along this trough early next week, but this is likely to occur well to the south, off the New South Wales coast. the upper trough will combine with a relatively moist airmass to result in showers and thunderstorms over southeastern parts for the next few days.
Forecast for the rest of SaturdayA slight to medium chance of showers and thunderstorms south and east of about Bollon to Emerald to St Lawrence, increasing to a medium to high chance about the far southeast, although storms are more likely inland. A slight chance of showers and thunderstorms elsewhere about the interior south of about Boulia to Emerald. A slight to medium chance of showers about the east coast north of St Lawrence. Fine and mostly sunny elsewhere, with daytime temperatures rising above the April average in the west. Light to moderate east to southeasterly winds.Sunday 22 AprilA new high pressure system should move eastwards to the Tasman Sea maintaining a ridge about the east coast of Queensland. The upper trough will persist over eastern Queensland, maintaining instability over the area with showers and a few thunderstorms possible. Fine, warm and mostly sunny conditions will persist over much of the interior as a drier southerly air mass extends over much of the area. An onshore wind flow will result in the slight to medium chance of showers about the central and east tropical coasts and nearby inland. The chance of showers will remain over northern Cape York Peninsula.Monday 23 AprilThe new high pressure system should move eastwards over the Tasman Sea maintaining a ridge about the east coast of Queensland. The upper trough is likely to strengthen over eastern Queensland, evolving into an upper low over the southeast maintaining unstable conditions and showers and a few thunderstorms over this area. An onshore wind flow will result in the slight to medium chance of showers about the central and east tropical coasts and nearby inland, with instability provided by the upper trough leading to the potential for one or two thunderstorms south of about Cairns. Fine, warm and mostly sunny conditions will persist over much of the interior as a drier southerly air mass extends northwards. The chance of showers over northern Cape York Peninsula.Tuesday 24 AprilThe high pressure system should continue to move slowly eastwards across the Tasman Sea, maintaining a ridge along the east coast of Queensland, resulting in the slight to medium chance of showers remaining about the central and tropical east coasts and nearby inland. The upper low is likely to remain near stationary over southeastern Queensland, with showers and a few thunderstorms expected as a result over the area. A surface trough near the east coast of southern Queensland or northern New South Wales may deepen in response to the upper system, however this feature is expected to remain off the southern Queensland coast, with any heavier rainfall areas remaining offshore as well.Wednesday until FridayThe upper low is likely to remain slow-moving over southeast Queensland, although possibly weakening later in the week. The surface trough will remain in place about the far southern east coast or northern New South Wales, but more likely is expected to slip south offshore of New South Wales, although there is some uncertainty associated with the location of these systems. A low may develop along the trough during the period, but this is most likely to be off the northern New South Wales coast, limiting the chance of significant weather over southeast Queensland. Regardless of this development, at least some instability is expected to persist over southeastern Queensland, with showers and a few thunderstorms likely to continue. Fine, warm and mostly sunny conditions will persist over much of the interior as a drier southerly air mass extends northwards. An onshore wind flow will result in the slight to medium chance of showers about the central and east tropical coasts and nearby inland. The chance of showers over Cape York Peninsula should contract to the far north as a drier air mass extends into the region.The next routine forecast will be issued at 4:30 pm EST Saturday.Product IDQ10700
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This page was created at 23:15 on Friday 20 April 2018 (UTC)
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