[Ips-dhfpr] SWS Daily HF Prop Report - 18 January 19 issued 2330 UT on 18 Jan 2019 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 JANUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 JANUARY) 
Date   T index  Conditions    
18 Jan   -31    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 30% during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Depressed by 25% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 20% 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
Dec      -32
Jan      -12
Feb      -13


2. FORECAST (19 JANUARY - 21 JANUARY)
Date   T index  Conditions       MUFs                              
19 Jan   -30    Normal-fair      Depressed 15 to 30%/near predicted 
                                 monthly values
20 Jan   -30    Normal-fair      Depressed 15 to 30%/near predicted 
                                 monthly values    
21 Jan   -30    Normal-fair      Depressed 15 to 30%/near predicted 
                                 monthly values   

COMMENT: On UT day 18 January, MUFs were either near predicted 
monthly values or mildly to moderately depressed across the Island, 
Australian and Antarctic regions. Sporadic E layers were observed 
across all regions. Similar levels of ionospheric support are 
expected for the next 3 days with MUFs either near predicted 
monthly values or mildly to moderately depressed due to continued 
low levels of ionising radiation from the Sun.

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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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