[Ips-dhfpr] SWS Daily HF Prop Report - 20 April 18 issued 2344 UT on 20 Apr 2018 [SEC=UNCLASSIFIED]

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SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/20 APRIL 2018 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    17    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      No data available during local day.
      No data available during local night.
   Niue Island Region:
      Depressed by 20% during local day.
      Enhanced by 65% during local night.
      Enhanced by 35% after local dawn.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 55% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 25% 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
Mar      2
Apr      2
May      1


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

COMMENT: On UT day 20 April, MUFs were mainly enhanced above 
predicted monthly values over most of the Aus/NZ region. There 
were minor depressions in the Niue Island Region during the local 
day and the Southern Australian Region after local dawn. There 
were a few cases of Sporadic E blanketing. MUFs are expected 
to have minor to moderate depressions on 21-22 April due to current 
geomagnetic activity, returning to near predicted monthly values 
on 23 April.

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