[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 November 23 issued 2330 UT on 06 Nov 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 NOVEMBER 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 NOVEMBER) 
Date   T index  Conditions    
06 Nov    27    Poor           

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 30% during local day.
      Depressed by 25% during local night.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 45% during local day.
      Depressed by 35% during local night.
      Depressed by 40% after local dawn.
   Southern Australian Region:
      Depressed by 45% during local day.
      Depressed by 20% during local night.
      Depressed by 20% after local dawn.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Oct      130
Nov      100
Dec      98


2. FORECAST (07 NOVEMBER - 09 NOVEMBER)
Date   T index  Conditions       MUFs                              
07 Nov    50    Fair             10 to 30% below predicted monthly 
                                 values
08 Nov    80    Normal           0 to 15% below predicted monthly 
                                 values    
09 Nov   100    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 110 was issued on 5 
November and is current for 5-7 Nov. ASWFC SWF HF Communications 
Warning 111 was issued on 6 November and is current for 6-7 Nov. 
Maximum usable frequencies (MUFs) in the Australian region on 
UT day 6-Nov were depressed by up to 45%, with the most significant 
depressions occurring during local day. Sporadic E was observed 
during local night at Hobart, Brisbane, Townsville, Darwin and 
Cocos Islands. Spread F was observed at Hobart during local night. 
Ongoing geomagnetic activity means that depressions of 10-30% 
are expected to continue across the Australian region over 7-Nov. 
Conditions are expected to improve towards predicted monthly 
values over 8-9 Nov, with MUFs expected to be near predicted 
monthly values to 15% depressed on 8-Nov and near predicted monthly 
values on 9-Nov. Isolated shortwave fadeouts are possible.

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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