[Ips-dhfpr] SWS Daily HF Prop Report - 22 January 19 issued 2330 UT on 22 Jan 2019 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 JANUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 JANUARY) 
Date   T index  Conditions    
22 Jan   -20    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 15% during local day.
      No data available during local night.
   Niue Island Region:
      Depressed by 45% during local day.
      Near predicted monthly values during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Depressed by 35% during local day.
      Near predicted monthly values during local night.
   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
Dec      -32
Jan      -12
Feb      -13


2. FORECAST (23 JANUARY - 25 JANUARY)
Date   T index  Conditions       MUFs                              
23 Jan   -20    Normal           Near predicted monthly values
24 Jan   -30    Normal           Near predicted monthly values    
25 Jan   -20    Normal           Near predicted monthly values   

COMMENT: On UT day 22 January, MUFs were moderately depressed 
to mostly near predicted monthly values across the Australian 
region. Sporadic E layers were seen across the Australian region. 
Near predicted to moderately depressed MUFs are expected for 
today (UT day 23 January), as a consequence of very low levels 
of ionising radiation from the Sun. Slightly stronger depressions 
are expected on UT day 24 January as an aftermath of the forecasted 
geomagnetic activity associated with the approaching coronal 
hole effects.

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For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Space Weather Services              email: asfc at bom.gov.au
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