[Ips-dhfpr] SWS Daily HF Prop Report - 28 October 16 issued 2330 UT on 28 Oct 2016 [SEC=UNCLASSIFIED]

Regional Warning Centre rwc at ips.gov.au
Sat Oct 29 10:30:35 EST 2016


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/28 OCTOBER 2016 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (28 OCTOBER) 
Date   T index  Conditions    
28 Oct    -4    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      Depressed by 35% during local day.
      Depressed by 40% during local night.
      Depressed by 25% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 35% during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
      Depressed by 20% after local dawn.
   Southern Australian Region:
      Depressed by 30% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Sep      30
Oct      30
Nov      30


2. FORECAST (29 OCTOBER - 31 OCTOBER)
Date   T index  Conditions       MUFs                              
29 Oct    -5    Normal-fair      20 to 30% below predicted monthly 
                                 values
30 Oct    10    Normal-fair      15 to 25% below predicted monthly 
                                 values    
31 Oct    10    Normal           10 to 25% below predicted monthly 
                                 values   

COMMENT: SWS HF Communications Warning 49 was issued on 27 October 
and is current for 28-30 Oct. Mildly depressed to depressed MUFs 
were observed for the UT day, 28 October, in the Aus/NZ region. 
Current depressions are associated with low levels of ionising 
radiation and geomagnetic activity resulting in ionospheric storming. 
Expect these conditions to prevail for the next three days with 
some degradation in HF communication. Note, there were periods 
of sporadic E observed in the Australian region.

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