[Ips-dhfpr] SWS Daily HF Prop Report - 23 May 21 issued 2339 UT on 23 May 2021

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/23 MAY 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (23 MAY) 
Date   T index  Conditions    
23 May     9    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 M1/-- 22/2136UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Near predicted monthly values.
   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
Apr      12
May      21
Jun      24


2. FORECAST (24 MAY - 26 MAY)
Date   T index  Conditions       MUFs                              
24 May    10    Normal           Near predicted monthly values
25 May    20    Fair-poor        Near predicted monthly values    
26 May     0    Fair             Near predicted monthly values/depressed 
                                 10 to 30%   

COMMENT: SWS SWF HF Communications Warning 16 was issued on 22 
May and is current for 23-25 May. MUFs in the Australian region 
on UT day 23 May were mostly near predicted monthly values. For 
UT days 24-25 May, MUFs are expected to be mostly near predicted 
monthly values. Enhanced MUFs are expected in the second half 
of 25 May. Mild to strong MUF depressions may occur on UT day 
26 May due to the expected increase in geomagnetic activity. 
Short wave fadeouts are possible for the next three UT days, 
24-26 May.

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