[Ips-dhfpr] SWS Daily HF Prop Report - 10 May 22 issued 2331 UT on 10 May 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/10 MAY 2022 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 MAY) 
Date   T index  Conditions    
10 May    62    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  X1.5    1355UT  probable   all    European
  M1.0    1433UT  possible   lower  South American/
                                    Atlantic

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Depressed by 15% during local night.
   Niue Island Region:
      Enhanced by 25% during local day.
      Depressed by 20% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Southern Australian Region:
      Enhanced 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
Apr      77
May      51
Jun      54


2. FORECAST (11 MAY - 13 MAY)
Date   T index  Conditions       MUFs                              
11 May    60    Normal           Near predicted monthly values 
                                 to 20% enhanced.
12 May    60    Normal           Near predicted monthly values 
                                 to 20% enhanced.    
13 May    60    Normal           Near predicted monthly values 
                                 to 20% enhanced.   

COMMENT: SWS SWF HF Communications Warning 41 was issued on 9 
May and is current for 9-11 May. Maximum usable frequencies (MUFs) 
on UT day 10 May were mostly near monthly predicted values with 
some daytime enhancements. Night spread F was observed at Townsville. 
MUFs are expected to be mostly near monthly predicted values 
to slightly enhanced 11-13 May. Short-wave fadeouts are possible 
during this period.

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