[Ips-dhfpr] SWS Daily HF Prop Report - 20 April 17 issued 2330 UT on 20 Apr 2017 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 APRIL 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (20 APRIL) 
Date   T index  Conditions    
20 Apr    31    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Enhanced by 15% during local night.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% 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
Mar      11
Apr      14
May      14


2. FORECAST (21 APRIL - 23 APRIL)
Date   T index  Conditions       MUFs                              
21 Apr    20    Normal           Near predicted monthly values/depressed 
                                 5 to 15%
22 Apr    10    Normal           Near predicted monthly values/depressed 
                                 5 to 15%    
23 Apr    25    Fair             Near predicted monthly values   

COMMENT: For the UT day, 20 April, mostly near predicted monthly 
MUFs were observed over the Australian region. Enhanced MUFs 
were also observed during local night in the Northern Australian 
Region. Mildly depressed MUFs were observed in the Antarctic 
region. Near predicted MUFs over the Australian region are expected 
for the next two UT days, 21-22 April. However, moderately depressed 
MUFs can occur in the Southern Australian Region and in Antarctica. 
Near predicted and enhanced MUFs are expected for 23 April due 
to predicted increase in the geomagnetic activity.

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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.

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