From aswfc at bom.gov.au Wed Aug 5 11:17:32 2026 From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre) Date: Wed, 05 Aug 2026 11:17:32 +1000 Subject: [Ips-whfpr] ASWFC Weekly Prop. Report (05 August 26) issued 0117 UT on 05 Aug 2026 [SEC=OFFICIAL] Message-ID: <6a728f2c.fUZufyKtMcG/JRFs%aswfc@bom.gov.au> SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT ISSUED ON 05 AUGUST 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE AUSTRALIAN REGION SUMMARY AND FORECAST 1. SUMMARY (29 JULY - 04 AUGUST) Date T index Conditions 29 Jul 93 Normal MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Enhanced by 30% during local day. Near predicted monthly values during local night. Northern Australian Region: Near predicted monthly values. Southern Australian Region: Enhanced by 15% during local day. Enhanced by 20% during local night. Enhanced by 20% after local dawn. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 30 Jul 85 Normal MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Enhanced by 30% during local day. Near predicted monthly values during local night. Northern Australian Region: Near predicted monthly values. Southern Australian Region: Near predicted monthly values during local day. Enhanced by 15% during local night. Enhanced by 20% after local dawn. Antarctic Region (Casey/Davis/Mawson): Enhanced by 15% over the UT day. 31 Jul 81 Normal-fair MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Enhanced by 30% during local day. Near predicted monthly values during local night. Northern Australian Region: Near predicted monthly values. Southern Australian Region: Mostly near predicted monthly values. Enhanced by 20% after local dawn. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 01 Aug 81 Normal-fair MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Enhanced by 20% during local day. Near predicted monthly values during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 15% during local night. Southern Australian Region: Mostly near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Enhanced by 25% over the UT day. 02 Aug 77 Normal-fair MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Enhanced by 20% during local day. Near predicted monthly values during local night. Northern Australian Region: Near predicted monthly values. Southern Australian Region: Mostly near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Enhanced by 20% over the UT day. 03 Aug 92 Normal-fair MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Enhanced by 15% during local day. Enhanced by 15% during local night. Northern Australian Region: Enhanced by 20% during local day. Enhanced by 15% during local night. Southern Australian Region: Enhanced by 15% during local day. Enhanced by 25% during local night. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 04 Aug 72 Normal-fair MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Near predicted monthly values during local day. Depressed by 20% during local night. Depressed by 20% after local dawn. Northern Australian Region: Mostly near predicted monthly values. Southern Australian Region: Near predicted monthly values during local day. Enhanced by 15% during local night. Antarctic Region (Casey/Davis/Mawson): Depressed by 20% over the UT day. Predicted Monthly T index for August: 64 2. FORECAST (05 AUGUST - 11 AUGUST) Maximum Usable Frequencies (MUFs) will be near predicted monthly values on all days this week, with some mild depressions possible over 07-08 Aug due to forecast minor geomagnetic activity. Propagation conditions: Gloabl Ionospheric conditions are expected to be Normal across 05-11 Aug, with some mild degradations possible in high latitude regions over 07-08 Aug. T index: 64 3. OUTLOOK (12 AUGUST - 11 SEPTEMBER) Degraded HF propagation conditions possible: 17-19 Aug PLEASE NOTE: Space weather conditions can frequently be determined by short timescale events that cannot be forecast a week in advance, particularly at solar maximum. For an explanation of some of the terms in this report, go to https://www.sws.bom.gov.au, and follow links to Educational-> Glossary on Solar Terrestrial Terms. Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au From aswfc at bom.gov.au Wed Aug 12 11:25:26 2026 From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre) Date: Wed, 12 Aug 2026 11:25:26 +1000 Subject: [Ips-whfpr] ASWFC Weekly Prop. Report (12 August 26) issued 0125 UT on 12 Aug 2026 [SEC=OFFICIAL] Message-ID: <6a7bcb86.bpSri2cY89uvqAWV%aswfc@bom.gov.au> SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT ISSUED ON 12 AUGUST 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE AUSTRALIAN REGION SUMMARY AND FORECAST 1. SUMMARY (05 AUGUST - 11 AUGUST) Date T index Conditions 05 Aug 59 Normal MUFS: Niue Island Region: Near predicted monthly values during local day. No data available during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 20% during local night. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 06 Aug 58 Normal MUFS: Niue Island Region: No data available during local day. No data available during local night. Northern Australian Region: Near predicted monthly values. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 07 Aug 49 Normal-fair MUFS: Niue Island Region: Depressed by 15% during local day. Depressed by 35% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 25% during local night. Depressed by 20% after local dawn. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 08 Aug 47 Normal-fair MUFS: Niue Island Region: Near predicted monthly values during local day. Depressed by 25% during local night. Northern Australian Region: Depressed by 15% during local day. Near predicted monthly values during local night. Southern Australian Region: Mostly near predicted monthly values. Depressed by 20% after local dawn. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 09 Aug 42 Fair-normal MUFS: Niue Island Region: Near predicted monthly values during local day. Depressed by 15% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 20% during local night. Southern Australian Region: Depressed by 25% during local day. Near predicted monthly values during local night. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 10 Aug 35 Fair MUFS: Niue Island Region: Depressed by 15% during local day. Depressed by 30% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 30% during local night. Southern Australian Region: Depressed by 15% during local day. Depressed by 20% during local night. Antarctic Region (Casey/Davis/Mawson): Depressed by 15% over the UT day. 11 Aug 41 Normal-fair MUFS: Niue Island Region: Depressed by 15% during local day. Depressed by 20% during local night. Depressed by 20% after local dawn. Northern Australian Region: Mostly near predicted monthly values. Southern Australian Region: Near predicted monthly values during local day. Depressed by 15% during local night. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. Predicted Monthly T index for August: 64 2. FORECAST (12 AUGUST - 18 AUGUST) MUFS: MUFs are expected to be mostly near predicted monthly values this week, though depressions of 15% are possible due to the current low observed sunspot number. Propagation conditions: Mostly normal HF propagation conditions are expected this week. T index: 50 ASWFC HF Communications Warning 72 was issued on 11 August and is current for 12 Aug only. 3. OUTLOOK (19 AUGUST - 18 SEPTEMBER) Degraded HF propagation conditions possible: 19 Aug, 15 Sep PLEASE NOTE: Space weather conditions can frequently be determined by short timescale events that cannot be forecast a week in advance, particularly at solar maximum. For an explanation of some of the terms in this report, go to https://www.sws.bom.gov.au, and follow links to Educational-> Glossary on Solar Terrestrial Terms. Australian Space Weather Forecasting Centre Bureau of Meteorology ASWFC at bom.gov.au www.bom.gov.au | www.sws.bom.gov.au