From aswfc at bom.gov.au Wed May 6 11:13:34 2026 From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre) Date: Wed, 06 May 2026 11:13:34 +1000 Subject: [Ips-whfpr] ASWFC Weekly Prop. Report (06 May 26) issued 0113 UT on 06 May 2026 [SEC=OFFICIAL] Message-ID: <69fa95be.WQZeThX2RnBSZJtT%aswfc@bom.gov.au> SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT ISSUED ON 06 MAY 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE AUSTRALIAN REGION SUMMARY AND FORECAST 1. SUMMARY (29 APRIL - 05 MAY) Date T index Conditions 29 Apr 69 Normal MUFS: Niue Island Region: Mostly near predicted monthly values. Depressed by 20% after local dawn. 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. 30 Apr 77 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. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 01 May 84 Normal-fair MUFS: Niue Island Region: Enhanced by 15% during local day. Near predicted monthly values during local night. Northern Australian Region: Near predicted monthly values. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Depressed by 20% over the UT day. 02 May 86 Normal MUFS: Niue Island Region: Enhanced by 20% during local day. Near predicted monthly values during local night. Northern Australian Region: Enhanced by 15% during local day. Near predicted monthly values during local night. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 03 May 92 Normal MUFS: Niue Island Region: Enhanced by 45% during local day. Near predicted monthly values during local night. Northern Australian Region: Enhanced by 15% during local day. Near predicted monthly values during local night. Southern Australian Region: Mostly near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 04 May 84 Normal MUFS: Niue Island Region: Near predicted monthly values during local day. Enhanced by 15% during local night. Northern Australian Region: Enhanced by 25% during local day. Enhanced by 15% during local night. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 05 May 81 Normal MUFS: Niue Island Region: Enhanced by 15% during local day. Near predicted monthly values during local night. Northern Australian Region: Enhanced by 15% during local day. Near predicted monthly values during local night. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Depressed by 25% over the UT day. Predicted Monthly T index for May: 71 2. FORECAST (06 MAY - 12 MAY) MUFS: Maximum Usable Frequencies (MUFs) are expected to be near predicted monthly values this week. Propagation conditions: Normal to fair propagation conditions are expected. T index: 75 3. OUTLOOK (13 MAY - 12 JUNE) Degraded HF propagation conditions possible: 15-18 May 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 May 13 11:30:21 2026 From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre) Date: Wed, 13 May 2026 11:30:21 +1000 Subject: [Ips-whfpr] ASWFC Weekly Prop. Report (13 May 26) issued 0130 UT on 13 May 2026 [SEC=OFFICIAL] Message-ID: <6a03d42d.QjPKUigU1ChbK7jw%aswfc@bom.gov.au> SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT ISSUED ON 13 MAY 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE AUSTRALIAN REGION SUMMARY AND FORECAST 1. SUMMARY (06 MAY - 12 MAY) Date T index Conditions 06 May 61 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 15% during local night. Northern Australian Region: Near predicted monthly values during local day. Enhanced by 30% during local night. 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. 07 May 58 Normal-fair MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Mostly near predicted monthly values. Northern Australian Region: Near predicted monthly values during local day. Depressed by 15% during local night. Southern Australian Region: Near predicted monthly values during local day. Depressed by 15% during local night. Antarctic Region (Casey/Davis/Mawson): Enhanced by 15% over the UT day. 08 May 75 Normal 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 15% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 15% during local night. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 09 May 69 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 25% 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. 10 May 59 Normal 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 15% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 35% during local night. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 11 May 52 Normal-fair MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Depressed by 25% during local day. Depressed by 30% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 25% during local night. 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. 12 May 53 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 15% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 25% during local night. Southern Australian Region: Near predicted monthly values during local day. Depressed by 20% during local night. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. Predicted Monthly T index for May: 71 2. FORECAST (13 MAY - 19 MAY) Maximum Usable Frequencies (MUFS) are likely to be depressed during 15-18 May due to a recurrent coronal hole high speed wind stream. MUFs near predicted monthly values on other days. Propagation conditions: Fair on 15-18 May. Otherwise normal. Shortwave fadeouts are possible, particularly early in the week. T index: 71 ASWFC SWF HF Communications Warning 47 was issued on 10 May and is current for 11-13 May. 3. OUTLOOK (20 MAY - 19 JUNE) Degraded HF propagation conditions possible: 27-28 May, 11-14 Jun 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 May 20 11:32:22 2026 From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre) Date: Wed, 20 May 2026 11:32:22 +1000 Subject: [Ips-whfpr] ASWFC Weekly Prop. Report (20 May 26) issued 0132 UT on 20 May 2026 [SEC=OFFICIAL] Message-ID: <6a0d0f26.xp6AabmciQaaAyWZ%aswfc@bom.gov.au> SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT ISSUED ON 20 MAY 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE AUSTRALIAN REGION SUMMARY AND FORECAST 1. SUMMARY (13 MAY - 19 MAY) Date T index Conditions 13 May 45 Normal-fair MUFS: Niue Island Region: Depressed by 15% during local day. Depressed by 25% during local night. Northern Australian Region: Depressed by 15% during local day. Depressed by 30% during local night. 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. 14 May 52 Normal MUFS: Niue Island Region: Depressed by 15% during local day. Depressed by 25% during local night. Northern Australian Region: Depressed by 15% during local day. Depressed by 15% during local night. Depressed by 20% after local dawn. Southern Australian Region: Mostly near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Depressed by 15% over the UT day. 15 May 47 Normal MUFS: Niue Island Region: Depressed by 15% during local day. Depressed by 20% during local night. Northern Australian Region: Depressed by 15% during local day. Depressed by 15% 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. 16 May 64 Normal-fair MUFS: Niue Island Region: Near predicted monthly values. Northern Australian Region: Near predicted monthly values. Southern Australian Region: Depressed by 25% during local day. Near predicted monthly values during local night. Depressed by 25% after local dawn. Antarctic Region (Casey/Davis/Mawson): Depressed by 25% over the UT day. 17 May 48 Normal 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 15% during local night. Southern Australian Region: Depressed by 20% during local day. Depressed by 20% during local night. Antarctic Region (Casey/Davis/Mawson): Depressed by 20% over the UT day. 18 May 39 Fair MUFS: Niue Island Region: Depressed by 20% during local day. Depressed by 30% during local night. Northern Australian Region: Near predicted monthly values during local day. Depressed by 25% during local night. Southern Australian Region: Depressed by 15% during local day. Depressed by 30% during local night. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 19 May 50 Fair MUFS: Niue Island Region: Depressed by 25% during local day. Depressed by 25% during local night. Northern Australian Region: Near predicted monthly values. Southern Australian Region: Depressed by 20% 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 May: 71 2. FORECAST (20 MAY - 26 MAY) MUFS: Maximum Useable Frequencies (MUFs) are expected to be near predicted monthly values this week. Propagation conditions: Mostly normal propagation conditions are expected this week. T index: 65 3. OUTLOOK (27 MAY - 26 JUNE) Degraded HF propagation conditions possible: 11-13 Jun 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 May 27 13:26:35 2026 From: aswfc at bom.gov.au (Australian Space Weather Forecasting Centre) Date: Wed, 27 May 2026 13:26:35 +1000 Subject: [Ips-whfpr] ASWFC Weekly Prop. Report (27 May 26) issued 0326 UT on 27 May 2026 [SEC=OFFICIAL] Message-ID: <6a16646b.SPTemQwTQt29f2r5%aswfc@bom.gov.au> SUBJ: ASWFC WEEKLY HF PROPAGATION REPORT ISSUED ON 27 MAY 2026 FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE AUSTRALIAN REGION SUMMARY AND FORECAST 1. SUMMARY (20 MAY - 26 MAY) Date T index Conditions 20 May 48 Normal-fair MUFS: Cocos Island Region: No data available during local day. No data available during local night. 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 20% 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 20% over the UT day. 21 May 50 Normal 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 35% 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. 22 May 59 Normal 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 15% 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 during local day. Depressed by 20% during local night. Antarctic Region (Casey/Davis/Mawson): Enhanced by 15% over the UT day. 23 May 64 Normal 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. Northern Australian Region: Near predicted monthly values during local day. Enhanced by 35% during local night. 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. 24 May 67 Normal MUFS: Cocos Island Region: No data available during local day. No data available during local night. Niue Island Region: Near predicted monthly values. Northern Australian Region: Near predicted monthly values during local day. Depressed by 15% during local night. Southern Australian Region: Near predicted monthly values. Antarctic Region (Casey/Davis/Mawson): Near predicted monthly values over the UT day. 25 May 76 Normal 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 15% 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. 26 May 80 Normal 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. Near predicted monthly values 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. Predicted Monthly T index for May: 71 2. FORECAST (27 MAY - 02 JUNE) MUFS: MUFs in the Australian region are expected to be near predicted monthly values over 27-May to 02-Jun. Propagation conditions: HF radio propagation conditions are expected to be mostly normal over 27-May to 02-Jun. T index: 71 3. OUTLOOK (03 JUNE - 03 JULY) Degraded HF propagation conditions possible: 03-Jun, 06-16 Jun, 30-Jun, 03-Jul. 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