[Ips-dhfpr] ASWFC Daily HF Prop Report - 03 February 23 issued 2330 UT on 03 Feb 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/03 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (03 FEBRUARY) 
Date   T index  Conditions    
03 Feb   127    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 65% during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 40% during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Enhanced by 25% 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
Jan      119
Feb      75
Mar      76


2. FORECAST (04 FEBRUARY - 06 FEBRUARY)
Date   T index  Conditions       MUFs                              
04 Feb   120    Normal           Near to 15% above predicted 
                                 monthly values
05 Feb   120    Normal           Near to 15% above predicted 
                                 monthly values    
06 Feb   120    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Northern Australian 
region on UT day 3-Feb were 25-40% enhanced, MUFs in the Southern 
Australian region were near predicted monthly values to 25% enhanced. 
Sporadic E was observed at several Australian sites during local 
night. MUFs are expected to be near predicted monthly values 
to 15% enhanced over 4-6 Feb, with a chance of depressions over 
6-Feb due to possible geomagnetic activity caused by a group 
of equatorial coronal holes currently rotating towards a geoeffective 
position and a possible glancing impact from a CME first observed 
on 3-Feb. Sporadic E is possible during local night, affecting 
lower frequencies.

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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