[Ips-dhfpr] SWS Daily HF Prop Report - 13 April 22 issued 2330 UT on 13 Apr 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/13 APRIL 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (13 APRIL) 
Date   T index  Conditions    
13 Apr    66    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
      Enhanced by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values.
   Northern Australian Region:
      Enhanced by 25% during local day.
      Enhanced by 15% during local night.
      Enhanced by 25% after local dawn.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Enhanced 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      64
Apr      46
May      49


2. FORECAST (14 APRIL - 16 APRIL)
Date   T index  Conditions       MUFs                              
14 Apr    65    Normal-fair      Near to 15% above predicted 
                                 monthly values, depressions 
                                 possible late in UT Day.
15 Apr    35    Fair-normal      Depressed 10 to 20%/near predicted 
                                 monthly values    
16 Apr    60    Normal           Near predicted monthly values   

COMMENT: SWS Preliminary HF Communications Warning 33 was issued 
on 12 April and is current for 13-15 Apr. Maximum usable frequencies 
(MUFs) on UT day 13 Apr were near monthly predicted values to 
slightly enhanced. Forecast degraded conditions have not eventuated, 
however mild to moderate MUF depressions are still expected at 
high to mid latitude regions from late 14 Apr due to the anticipated 
arrival of coronal mass ejection observed on 11 Apr.

----------------------------------------------------------
For an explanation of some of the terms in this report, go to
https://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
PO Box 1386                         WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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