[Ips-dhfpr] SWS Daily HF Prop Report - 17 January 19 issued 2330 UT on 17 Jan 2019 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 JANUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 JANUARY) 
Date   T index  Conditions    
17 Jan   -27    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Depressed by 25% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Depressed by 25% during local day.
      Depressed by 25% 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
Dec      -32
Jan      -12
Feb      -13


2. FORECAST (18 JANUARY - 20 JANUARY)
Date   T index  Conditions       MUFs                              
18 Jan   -30    Normal-fair      Depressed 15 to 30%/near predicted 
                                 monthly values
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   

COMMENT: On UT day 17 January, there were Minor to Moderate MUF 
depressions across the Niue Island and the Northern Australian 
regions as compared to the monthly predicted levels. In the Southern 
Australian region, MUFs were mainly near predicted monthly values 
with Minor depressions during the local day. In the Antarctic 
regions, MUFs had Minor depressions throughout the UT day. Sporadic 
E layers were observed across the Australian region and in Antarctica. 
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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