[Ips-dhfpr] SWS Daily HF Prop Report - 30 July 22 issued 2330 UT on 30 Jul 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/30 JULY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (30 JULY) 
Date   T index  Conditions    
30 Jul    48    Normal         

Flares: none.

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

PCA Event : No event.

Monthly T index:
Month  T index
Jun      60
Jul      65
Aug      67


2. FORECAST (31 JULY - 02 AUGUST)
Date   T index  Conditions       MUFs                              
31 Jul    50    Normal           Near predicted monthly values, 
                                 depressions of 10-20% at times 
                                 in Northern Australian regions
01 Aug    50    Normal           Near predicted monthly values    
02 Aug    50    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 30-Jul were 
mostly near predicted monthly values to 30% depressed in the 
Australian region. Spread-F was observed in most Australian sites, 
and sporadic-E was observed at Cocos Islands and Canberra. Ionospheric 
conditions were degraded during local night hours in Northern 
Australia, particularly near Darwin. The cause of these degraded 
conditions is unknown. MUFs are expected to be near predicted 
monthly values over 31-Jul to 02-Aug, with possible depressions 
of 10-20% at times in the Northern Australian region. .

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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
Level 2 Bice Building, Lot Fourteen Precinct, North Terrace, Adelaide SA 5000
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au