[Ips-dhfpr] ASWFC Daily HF Prop Report - 09 February 23 issued 2330 UT on 09 Feb 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/09 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (09 FEBRUARY) 
Date   T index  Conditions    
09 Feb    76    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  M3.1    0310UT  possible   lower  E. Asia/Aust.
  M1.1    0717UT  possible   lower  Mid East/Indian
  M2.8    0907UT  possible   lower  Mid East/Indian
  M1.5    1456UT  possible   lower  South American/
                                    Atlantic
  M1.4    1525UT  possible   lower  South American/
                                    Atlantic
  M1.8    1842UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Enhanced by 30% during local day.
      Near predicted monthly values during local night.
      Enhanced by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   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
Jan      119
Feb      75
Mar      76


2. FORECAST (10 FEBRUARY - 12 FEBRUARY)
Date   T index  Conditions       MUFs                              
10 Feb    80    Normal           Near predicted monthly values
11 Feb    85    Normal           Near predicted monthly values    
12 Feb    90    Normal           Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 14 was issued on 
7 February and is current for 8-10 Feb. Maximum usable frequencies 
(MUFs) in the Australian region were near predicted monthly values, 
with depressions of up to 15% observed in the Southern Australian 
region during local day. MUFs are expected to be near predicted 
monthly values on 10-Feb, with a chance of depressed conditions 
due to possible increased geomagnetic activity. MUFs are expected 
to be near predicted monthly values over 11-12 Feb. Sporadic 
E is possible during local night, affecting lower frequencies. 
Shortwave fadeouts are probable.

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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