[Ips-dhfpr] ASWFC Daily HF Prop Report - 09 November 24 issued 2331 UT on 09 Nov 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/09 NOVEMBER 2024
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 NOVEMBER) 
Date   T index  Conditions    
09 Nov   120    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  M1.2    2050UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
      Enhanced by 30% after local dawn.
   Niue Island Region:
      Enhanced by 15% during local day.
      Enhanced by 35% during local night.
      Enhanced by 20% after local dawn.
   Northern Australian Region:
      Mostly near predicted monthly values.
      Learmonth depressed 30-40% early in UT day.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Perth depressed 30-40% early in UT day.
      Depressed by 20% after local dawn this morning.
   Antarctic Region (Casey/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Oct      139
Nov      119
Dec      117


2. FORECAST (10 NOVEMBER - 12 NOVEMBER)
Date   T index  Conditions       MUFs                              
10 Nov   120    Fair-normal      Depressed 15%/Near to 15% above 
                                 predicted monthly values
11 Nov   140    Normal           Near to 15% above predicted 
                                 monthly values    
12 Nov   140    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC HF Communications Warning 131 was issued on 9 
November and is current for 10 Nov only. Maximum usable frequencies 
(MUFs) in the Australian region on UT day 09-Nov were generally 
near predicted monthly values in the northern Australian region, 
with the exception of Learmonth which was 30-40% depressed early 
in the UT day. Southern Australian region MUFs were near predicted 
monthly values during the local day yesterday with the exception 
of Perth which was 30-40% depressed early in the UT day. Southern 
Australian region MUFS are 15-20% depressed after local dawn 
this morning. Strong spread F was observed at Hobart during local 
night hours. MUFs are expected to generally be near predicted 
monthly values to 15% enhanced over 11-12 Nov. Mildly depressed/degraded 
HF conditions may be experienced during local night hours for 
the southern Australian region 10-Nov. 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