[Ips-dhfpr] ASWFC Daily HF Prop Report - 07 February 23 issued 2330 UT on 07 Feb 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/07 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (07 FEBRUARY) 
Date   T index  Conditions    
07 Feb    85    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  M1.0    1354UT  possible   lower  European
  M1.6    2007UT  possible   lower  East Pacific/
                                    North American
  M3.9    2258UT  possible   lower  East Pacific/
                                    North American
  M6.4    2307UT  probable   lower  West Pacific

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

PCA Event : No event.

Monthly T index:
Month  T index
Jan      119
Feb      75
Mar      76


2. FORECAST (08 FEBRUARY - 10 FEBRUARY)
Date   T index  Conditions       MUFs                              
08 Feb    95    Normal           Near predicted monthly values
09 Feb    95    Normal           Near predicted monthly values    
10 Feb    95    Normal           Near predicted monthly values   

COMMENT: ASWFC HF Communications Warning 13 was issued on 7 February 
and is current for 7-8 Feb. Maximum usable frequencies (MUFs) 
in the Australian region on UT day 07-Feb were depressed by 20% 
in southern Australia and near predicted monthly values to 30% 
enhanced in northern Australia. Depressions in southern Australia 
may be due to a recent mild increase in geomagnetic activity. 
Sporadic E was observed throughout the Australian region. MUFs 
are expected to be near predicted monthly values over 08-10 Feb. 
There is a chance of degraded HF conditions on 08-Feb due to 
possible increased geomagnetic activity. Sporadic E is possible 
during local night, affecting lower frequencies. 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