[Ips-dhfpr] SWS Daily HF Prop Report - 27 May 17 issued 2346 UT on 27 May 2017 [SEC=UNCLASSIFIED]

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/27 MAY 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (27 MAY) 
Date   T index  Conditions    
27 May     7    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% 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 (28 MAY - 30 MAY)
Date   T index  Conditions       MUFs                              
28 May   -20    Fair             Near predicted monthly values/depressed 
                                 10 to 30%
29 May     0    Normal           Near predicted monthly values/depressed 
                                 10 to 20%    
30 May    12    Normal           Near predicted monthly values   

COMMENT: SWS HF Communications Warning 30 was issued on 27 May 
and is current for 28-29 May. Mostly near predicted monthly MUFs 
with Minor depressions in the Northern Australian region during 
local day hours observed for the UT day, 27 May. Expect Minor 
to Moderate depressions with degraded HF communication at higher 
latitudes possible today and tomorrow due arrival of CME and 
then a return to near predicted MUFs on day three.

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