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

[Regional Warning Centre]

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

1. SUMMARY (21 APRIL) 
Date   T index  Conditions    
21 Apr    10    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Mostly near predicted monthly values.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values during local night.
   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 (22 APRIL - 24 APRIL)
Date   T index  Conditions       MUFs                              
22 Apr    10    Normal-fair      Near predicted monthly values/depressed 
                                 5 to 15%
23 Apr    25    Fair             Near predicted monthly values    
24 Apr    10    Fair-poor        Near predicted monthly values/depressed 
                                 5 to 15%   

COMMENT: For the UT day, 21 April, mostly near predicted monthly 
MUFs were observed over the Australian region. Mildly depressed 
MUFs were observed in the Southern Australian region during local 
day. Near predicted MUFs over the Australian region are expected 
for the next three UT days, 22-24 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.

----------------------------------------------------------
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
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