IDW13160 Australian Government Bureau of Meteorology Western Australia Great Southern District Forecast Issued at 4:25 pm WST on Sunday 17 November 2024 for the period until midnight WST Thursday 21 November 2024. Warning Information For latest warnings go to www.bom.gov.au, subscribe to RSS feeds, call 1300 659 210* or listen for warnings on relevant TV and radio broadcasts. Weather Situation A strong ridge is developing along the south coast. A trough and associated low pressure system will develop near the west coast later Sunday, deepening early in the week and moving east later Wednesday and into Thursday. Forecast for the rest of Sunday 17 November Clear. Winds southeasterly 20 to 30 km/h. Forecast for Monday 18 November Mostly sunny. Medium chance of showers in the west in the late afternoon and evening. Near zero chance of rain elsewhere. The chance of a thunderstorm in the afternoon and evening. Winds easterly 20 to 30 km/h tending northeasterly 15 to 25 km/h in the morning then tending northeast to southeasterly 20 to 30 km/h in the early afternoon. Overnight temperatures falling to between 7 and 11 with daytime temperatures reaching the low 30s. Katanning Mostly sunny. Min 8 Max 31 Lake Grace Mostly sunny. Min 9 Max 31 Narrogin Possible late shower. Min 10 Max 32 Fire Danger: Arthur: High Roe: High Lakes: High Stirling North: High Stirling West: High Sun protection 7:50am to 3:50pm, UV Index predicted to reach 11 [Extreme] Forecast for Tuesday 19 November Partly cloudy. High chance of showers, most likely in the afternoon and evening. The chance of a thunderstorm. Winds east to southeasterly 15 to 25 km/h tending east to northeasterly 25 to 35 km/h early in the morning then tending northwest to northeasterly 20 to 30 km/h in the early afternoon. Overnight temperatures falling to between 14 and 19 with daytime temperatures reaching the low to mid 30s. Katanning Showers. Possible storm. Min 15 Max 33 Lake Grace Showers increasing. Min 18 Max 33 Narrogin Shower or two. Possible storm. Min 17 Max 34 Forecast for Wednesday 20 November Partly cloudy. High chance of showers, most likely in the morning and afternoon. The chance of a thunderstorm. Heavy falls possible in the northeast. Winds north to northeasterly 15 to 20 km/h tending north to northwesterly 15 to 25 km/h during the morning then becoming light during the afternoon. Overnight temperatures falling to between 15 and 18 with daytime temperatures reaching the mid to high 20s. Katanning Showers. Possible storm. Min 18 Max 27 Lake Grace Showers. Possible storm. Min 19 Max 25 Narrogin Showers. Possible storm. Min 18 Max 27 Forecast for Thursday 21 November Partly cloudy. Medium chance of showers, most likely in the morning and afternoon. The chance of a thunderstorm in the east. Light winds becoming west to northwesterly 15 to 25 km/h during the morning then tending west to southwesterly 15 to 20 km/h during the afternoon. Overnight temperatures falling to around 15 with daytime temperatures reaching 23 to 28. Katanning Shower or two. Min 15 Max 25 Lake Grace Possible shower. Min 16 Max 27 Narrogin Shower or two. Min 15 Max 26 The next routine forecast will be issued at 5:00 am WST Monday. * Calls to 1300 numbers cost around 27.5c incl. GST, higher from mobiles or public phones. Copyright Commonwealth of Australia 2011, Bureau of Meteorology (ABN 92 637 533 532). Users of these web pages are deemed to have read and accepted the conditions described in the Copyright, Disclaimer, and Privacy statements (http://www.bom.gov.au/other/copyright.shtml).