[Ips-dhfpr] SWS Daily HF Prop Report - 19 May 17 issued 0002 UT on 20 May 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/19 MAY 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (19 MAY) 
Date   T index  Conditions    
19 May    10    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Depressed by 15% during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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
Apr      14
May      12
Jun      12


2. FORECAST (20 MAY - 22 MAY)
Date   T index  Conditions       MUFs                              
20 May     0    Normal-fair      20 to 40% below predicted monthly 
                                 values
21 May     0    Fair             20 to 40% below predicted monthly 
                                 values    
22 May     5    Normal-fair      Depressed 10 to 20%/near predicted 
                                 monthly values   

COMMENT: SWS Preliminary HF Communications Warning 28 was issued 
on 19 May and is current for 19-21 May. Minor to mild MUF depressions 
as well as enhancements were observed in the Aus regions today 
(UT day 19 May). Minor to moderate MUF depressions and degradation in 
HF conditions may be expected in the Aus/NZ regions on 20 and 
21 May due to an expected rise in geomagnetic activity during 
this period. Minor to mild MUF depressions and degradation in 
HF conditions may be expected in the Aus/NZ regions on 22 May.

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