[Ips-dhfpr] SWS Daily HF Prop Report - 26 September 19 issued 2331 UT on 26 Sep 2019

Regional Warning Centre rwc at ips.gov.au
Fri Sep 27 09:31:31 EST 2019


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/26 SEPTEMBER 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (26 SEPTEMBER) 
Date   T index  Conditions    
26 Sep    -4    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Depressed by 20% during local day.
      Depressed by 35% during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% during local night.
      Enhanced by 25% 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
Aug      -3
Sep      -14
Oct      -16


2. FORECAST (27 SEPTEMBER - 29 SEPTEMBER)
Date   T index  Conditions       MUFs                              
27 Sep     5    Normal-fair      Near to 15% above predicted 
                                 monthly values
28 Sep     0    Fair-poor        Near predicted monthly values    
29 Sep    -5    Normal-fair      Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region were mostly near predicted monthly values during UT day 
26 September. Some periods of minor to moderate MUF enhancements 
were also observed, mostly in the Southern Australian region. 
Sporadic-E and Spread-F occurrences were observed over some sites. 
For the next three UT days, 27-29 September, MUFs are expected 
to be mostly near predicted monthly values; moderately enhanced 
MUFs are likely for 27 September. Degraded HF propagation conditions 
are likely for 27-29 September as a consequence of the predicted 
increase in geomagnetic activity.

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