[Ips-dhfpr] ASWFC Daily HF Prop Report - 09 June 24 issued 2330 UT on 09 Jun 2024 [SEC=OFFICIAL]

[Australian Space Weather Forecasting Centre]

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

1. SUMMARY (09 JUNE) 
Date   T index  Conditions    
09 Jun   123    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.6    0701UT  possible   lower  Mid East/Indian
  M1.2    0820UT  possible   lower  Mid East/Indian
  M1.0    2018UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Mostly near predicted monthly values.
   Southern Australian Region:
      Mostly near predicted monthly values.
   Antarctic Region (Casey/Davis/Mawson):
      Near predicted monthly values over the UT day.

PCA Event : 10MeV Proton/PCA Event Began at 0250UT 08/06, Ended at 1930UT 09/06
 and, 100MeV Proton/PCA Event Began at 0215UT 08/06, Ended at 1435UT 08/06

Monthly T index:
Month  T index
May      121
Jun      116
Jul      117


2. FORECAST (10 JUNE - 12 JUNE)
Date   T index  Conditions       MUFs                              
10 Jun   105    Normal-fair      Near predicted monthly values 
                                 to 20% depressed
11 Jun   100    Normal-fair      Near predicted monthly values 
                                 to 20% depressed    
12 Jun   100    Normal-fair      Near predicted monthly values 
                                 to 20% depressed   

COMMENT: ASWFC SWF HF Communications Warning 62 was issued on 
8 June and is current for 8-10 Jun. ASWFC Preliminary HF Communications 
Warning 63 was issued on 8 June and is current for 10-12 Jun. 
Maximum usable frequencies (MUFs) on UT day 09-Jun were mostly 
near predicted values in the Australian region. Sporadic-E was 
observed in Brisbane, Canberra and Hobart during local night 
hours. Signal spreading was observed in Canberra, Hobart and 
Niue Island during local night hours. Scintillation was observed 
at Niue between 10/0903-1010 UT. Polar cap absorption was observed 
at high latitudes. MUFs are expected to be near predicted values 
on the first half of 10-Jun, before becoming up to 20% depressed 
for the forecast period due to anticipated geomagnetic activity.

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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