[Ips-dhfpr] SWS Daily HF Prop Report - 22 April 21 issued 2330 UT on 22 Apr 2021

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/22 APRIL 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (22 APRIL) 
Date   T index  Conditions    
22 Apr    15    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      No data available during.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Depressed by 25% 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      9
Apr      19
May      23


2. FORECAST (23 APRIL - 25 APRIL)
Date   T index  Conditions       MUFs                              
23 Apr    15    Normal           Near predicted monthly values
24 Apr     5    Normal           Near predicted monthly values/depressed 
                                 10 to 15%    
25 Apr     0    Normal-fair      Depressed 10 to 20%/near predicted 
                                 monthly values   

COMMENT: MUFs in the Australian region on UT day 22 April were 
mostly near predicted monthly values with some moderate depressions 
in the Northern Australian region during the local night. MUFs 
are expected to be near predicted monthly values on UT day 23 
April. Minor to mild MUF depressions are possible on UT days 
24 April due to expected rise in geomagnetic activity. Moderate 
MUF depressions may be observed on UT day 25 April due to expected 
further rise in 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
Bureau of Meteorology
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