[Ips-dhfpr] SWS Daily HF Prop Report - 26 May 17 issued 2330 UT on 26 May 2017 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 MAY 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 MAY) 
Date   T index  Conditions    
26 May     4    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Near predicted monthly values 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 (27 MAY - 29 MAY)
Date   T index  Conditions       MUFs                              
27 May     0    Fair             Near predicted monthly values/depressed 
                                 10 to 30%
28 May     0    Normal           Near predicted monthly values/depressed 
                                 10 to 30%    
29 May    12    Normal           Near predicted monthly values   

COMMENT: SWS Preliminary HF Communications Warning 29 was issued 
on 24 May and is current for 26-27 May. Mostly near predicted 
monthly MUFs with Minor depressions in the Northern Australian 
region during local day hours observed for the UT day, 26 May. 
Expect near predicted monthly MUFs today in the Australian region 
with a possibility of Minor to Moderated depressions later in 
the UT day depending on the timing of the expected arrival of 
the coronal mass ejection that is likely to hit the Earth.

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