[Ips-dhfpr] SWS Daily HF Prop Report - 17 February 17 issued 2333 UT on 17 Feb 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 FEBRUARY 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 FEBRUARY) 
Date   T index  Conditions    
17 Feb    29    Normal-fair    

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.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   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 (18 FEBRUARY - 20 FEBRUARY)
Date   T index  Conditions       MUFs                              
18 Feb    15    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 25%
19 Feb    18    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 20%    
20 Feb    25    Normal           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 with slight enhancements in the mid- and low-latitude 
regions of Australia on UT day 17 February. Minor depressions 
were observed in the high-latitude Australian regions. Over the 
next two days (18-19 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.

----------------------------------------------------------
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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