Just as Perth residents were bracing for another scorching summer day, a significant shift in the weather is on the horizon. The Bureau of Meteorology has announced that a cool change is set to sweep across the metropolitan area, bringing with it the potential for thunderstorms over the next 24 hours.
Unstable Airmass Triggers Storm Potential
The weather shift is being driven by a surge of moisture moving into the southwest of Western Australia. Meteorologists have identified a weak but increasingly unstable airmass moving over the region, creating the conditions for potential storm activity.
While the BoM does not anticipate a full-scale severe storm, it has flagged a chance for isolated, pop-up thunderstorms to develop. The main window for this activity is late Tuesday afternoon and into the early evening. Residents are being urged to stay alert and monitor conditions.
What to Expect: Heavy Rain and Gusty Winds
The primary risks associated with these potential storms include localised heavy rainfall, which could lead to minor flash flooding in low-lying or poorly drained areas. The other significant hazard is gusty winds that may exceed the strength of the typical afternoon sea breeze.
A BoM spokesperson provided a detailed forecast for Tuesday, stating Perth can expect "Cloudy conditions with a slight chance of a shower, becoming less likely in the evening. There is a chance of a thunderstorm in the afternoon and early evening." Winds are predicted to be easterly at 15 to 25 km/h, shifting throughout the day.
Weather Outlook for the Rest of the Week
The unsettled conditions are not confined to a single day. The forecast for Wednesday indicates partly cloudy skies with a slight chance of a shower, most likely in the morning and afternoon. Thunderstorms also remain a possibility.
Looking further ahead, the weather is expected to settle. The forecast for the subsequent days is as follows:
- Thursday: Partly sunny
- Friday: Sunny
- Saturday: Light rain
- Sunday: Sunny
- Monday: Sunny
This cool change offers a brief respite from the summer heat, but residents should remain prepared for sudden changes and heed any warnings issued by the Bureau of Meteorology.
