[Ips-dhfpr] SWS Daily HF Prop Report - 21 March 17 issued 2330 UT on 21 Mar 2017 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/21 MARCH 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (21 MARCH) 
Date   T index  Conditions    
21 Mar    18    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Near predicted monthly values.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 20% during local night.
      Depressed by 20% 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
Feb      10
Mar      16
Apr      15


2. FORECAST (22 MARCH - 24 MARCH)
Date   T index  Conditions       MUFs                              
22 Mar     0    Fair             10 to 30% below predicted monthly 
                                 values
23 Mar     0    Fair             10 to 30% below predicted monthly 
                                 values    
24 Mar     5    Normal-fair      Depressed 5 to 15%/near predicted 
                                 monthly values   

COMMENT: SWS Preliminary HF Communications Warning 19 was issued 
on 20 March and is current for 22-23 Mar. MUFs across the Australian/NZ 
region were mostly near predicted monthly values today (21 March, 
UT) with some periods of minor depressions in Central and Southern 
regions. Minor to moderate MUF depressions and degradations in 
HF conditions are expected in the Australian/NZ regions on 22 
and 23 March due to expected continued rise in geomagnetic activity 
levels on these days. Minor to mild depressions in MUFs and degradations 
in HF conditions are likely in the region on 24 March.

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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
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
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