[Ips-dhfpr] SWS Daily HF Prop Report - 18 August 18 issued 2330 UT on 18 Aug 2018 [SEC=UNCLASSIFIED]

Regional Warning Centre rwc at ips.gov.au
Sun Aug 19 09:30:26 EST 2018


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 AUGUST 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 AUGUST) 
Date   T index  Conditions    
18 Aug     2    Normal-fair    

Flares: none.

MUFs:
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Depressed by 20% 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
Jul      6
Aug      -3
Sep      -4


2. FORECAST (19 AUGUST - 21 AUGUST)
Date   T index  Conditions       MUFs                              
19 Aug     0    Normal           Near predicted monthly values
20 Aug    10    Normal           Near predicted monthly values    
21 Aug    -5    Normal-fair      Depressed 10 to 20%/near predicted 
                                 monthly values   

COMMENT: Mostly normal HF conditions were observed across the 
Aus/NZ regions on UT day 18, with Minor MUF depressions in the 
Northern Australian region during local day. Incidents of Spread 
F and Sporadic E were observed at some Australian sites. Mostly 
normal to moderately enhanced MUFs are expected in the Aus/NZ 
regions for the next two UT days (19-20 Aug). Periods of moderately 
degraded conditions are possible on 21 Aug due to expected increase 
of 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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