[Ips-dhfpr] SWS Daily HF Prop Report - 15 April 22 issued 2331 UT on 15 Apr 2022 [SEC=OFFICIAL]

Regional Warning Centre rwc at ips.gov.au
Sat Apr 16 09:31:01 EST 2022


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/15 APRIL 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (15 APRIL) 
Date   T index  Conditions    
15 Apr    45    Fair           

Flares    Max     Fadeout    Freq.  Sectors
  M1.2    1101UT  possible   lower  European
  M1.9    1359UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Near predicted monthly values during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 30% during local day.
      Near predicted monthly values during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 25% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Mar      64
Apr      46
May      49


2. FORECAST (16 APRIL - 18 APRIL)
Date   T index  Conditions       MUFs                              
16 Apr    60    Normal-fair      Near to 20% above predicted 
                                 monthly values
17 Apr    60    Normal           Near to 20% above predicted 
                                 monthly values    
18 Apr    65    Normal           Near to 20% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 15 Apr were 
near monthly predicted values to 20% enhanced at lower latitudes. 
Norfolk Is., Brisbane and more southern sites were mostly depressed, 
at times to 35%. MUFs are expected to be near predicted monthly 
values to enhanced 16-18 Apr. Mid to high latitudes may experience 
some minor degradations in conditions on 16-18 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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