[Ips-dhfpr] SWS Daily HF Prop Report - 21 January 18 issued 2330 UT on 21 Jan 2018 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 JANUARY 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 JANUARY) 
Date   T index  Conditions    
21 Jan    -5    Normal-fair    

Flares: none.

MUFs:
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Depressed by 20% 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      -10
Jan      4
Feb      4


2. FORECAST (22 JANUARY - 24 JANUARY)
Date   T index  Conditions       MUFs                              
22 Jan    -2    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%
23 Jan    -2    Normal-fair      Near predicted monthly values/depressed 
                                 10 to 30%    
24 Jan     2    Normal           Near predicted monthly values   

COMMENT: Mostly normal HF conditions were observed in the Aus/NZ 
regions today (21 January) with some periods of minor MUF depressions 
in the region. Periods of Sporadic E blanketing were also evident. 
Expected enhancements in geomagnetic activity and continued very 
low levels of solar activity may result in minor to moderate 
MUF depressions in the region on 22 and 23 January. HF conditions 
may return to more normal levels on 24 January.

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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
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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