[Ips-dhfpr] SWS Daily HF Prop Report - 22 March 19 issued 2330 UT on 22 Mar 2019 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 MARCH 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 MARCH) 
Date   T index  Conditions    
22 Mar    -3    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 25% during local night.
   Niue Island Region:
      No data available.
   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
Feb      -15
Mar      -12
Apr      -13


2. FORECAST (23 MARCH - 25 MARCH)
Date   T index  Conditions       MUFs                              
23 Mar     0    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 20%
24 Mar     5    Normal-fair      Near to 15% above predicted 
                                 monthly values    
25 Mar    -5    Normal           Near predicted monthly values/depressed 
                                 5 to 30%   

COMMENT: SWS SWF HF Communications Warning 3 was issued on 22 
March and is current for 22-23 Mar. Mostly near predicted monthly 
MUFs were observed for Australian region on UT day 22 March, 
with mild depressions for Northern Australian region during local 
day. Similar conditions are expected for the beginning of the 
next UT day, 23 March, with a chance of MUF depressions for Northern 
and Southern Australian regions. Later on 23 March and on 24 
March the HF propagation conditions are expected to degrade due 
to the predicted increase in the geomagnetic activity up to Storm 
levels. Mildly enhanced MUFs are expected for 23-24 March as 
a consequence of the predicted geomagnetic storm.

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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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