[Ips-dhfpr] SWS Daily HF Prop Report - 16 February 17 issued 2330 UT on 16 Feb 2017 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 FEBRUARY 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 FEBRUARY) 
Date   T index  Conditions    
16 Feb    13    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 20% during local night.
      Depressed by 25% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Southern Australian Region:
      Near predicted monthly values.
   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      0
Feb      18
Mar      16


2. FORECAST (17 FEBRUARY - 19 FEBRUARY)
Date   T index  Conditions       MUFs                              
17 Feb    -3    Normal-fair      Depressed 15%/near predicted 
                                 monthly values
18 Feb    -5    Normal           Depressed 15%/near predicted 
                                 monthly values    
19 Feb    -3    Normal           Depressed 15%/near predicted 
                                 monthly values   

COMMENT: SWS HF Communications Warning 14 was issued on 16 February 
and is current for 17-19 Feb. MUFs were near monthly predicted 
values in the mid- and low-latitude regions of Australia on UT 
day 16 February. Minor depressions were observed in the high-latitude 
Australian regions during the latter part of the UT day. Over 
the next two days (17-18 February), the high latitude depressions 
are expected to extend into the mid latitude regions as disturbed 
geomagnetic conditions associated with the coronal hole persist. 
HF users are advised to use lower than the monthly predicted 
frequencies.

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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
PO Box 1386                         WWW: http://www.sws.bom.gov.au
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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