[Ips-dhfpr] SWS Daily HF Prop Report - 20 September 18 issued 2345 UT on 20 Sep 2018 [SEC=UNCLASSIFIED]

rwc rwc at ips.gov.au
Fri Sep 21 09:45:00 EST 2018


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 SEPTEMBER 2018 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 SEPTEMBER) 
Date   T index  Conditions    
20 Sep    -4    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Mostly near predicted monthly values.
      Depressed by 20% after local dawn.
   Northern Australian Region:
      Depressed by 25% during local day.
      No data available during local night.
   Southern Australian Region:
      Near predicted monthly values.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Aug      1
Sep      -4
Oct      -4


2. FORECAST (21 SEPTEMBER - 23 SEPTEMBER)
Date   T index  Conditions       MUFs                              
21 Sep    -5    Normal           Near predicted monthly values
22 Sep    -5    Normal           Near predicted monthly values    
23 Sep   -15    Normal-fair      Near predicted monthly values   

COMMENT: Continued minor MUF depressions for Northern AUS/Equatorial 
regions observed over the last 24 hours and occasional disturbed 
ionospheric support for Antarctic regions. Similar HF conditions 
are expected over the next 2 days with possible minor MUF depressions 
for low latitude stations and periods of poor ionospheric support 
at high latitudes. Depressed MUFs possible for Southern AUS/NZ 
regions and disturbed conditions for Antarctic regions 23Sep 
due to expected 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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