[Ips-dhfpr] ASWFC Daily HF Prop Report - 26 March 23 issued 2330 UT on 26 Mar 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 MARCH 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 MARCH) 
Date   T index  Conditions    
26 Mar   137    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 55% during local night.
   Niue Island Region:
      Enhanced by 50% during local day.
      Enhanced by 110% during local night.
   Northern Australian Region:
      Enhanced by 30% during local day.
      Enhanced by 40-45% during local night and after local dawn.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
      Enhanced by 30% after local dawn.
   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
Feb      117
Mar      80
Apr      80


2. FORECAST (27 MARCH - 29 MARCH)
Date   T index  Conditions       MUFs                              
27 Mar   135    Normal           Near to 20% above predicted 
                                 monthly values
28 Mar   135    Normal           Near to 20% above predicted 
                                 monthly values    
29 Mar   135    Normal           Near to 20% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 26-Mar in 
the Australian region were enhanced by 30-45% in Northern Australia 
and 20% enhanced in Southern Australia during local day. Sporadic 
E was observed at Brisbane. Degraded HF conditions during local 
night hours are possible for southern Australia over 27-Mar due 
to a mild increase in geomagnetic activity from a broad solar 
coronal hole. MUFs are expected to be near predicted monthly 
values to 20% enhanced over 27-29 Mar.

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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