[Ips-dhfpr] SWS Daily HF Prop Report - 17 April 21 issued 2330 UT on 17 Apr 2021

Regional Warning Centre rwc at ips.gov.au
Sun Apr 18 09:30:11 EST 2021


SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/17 APRIL 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (17 APRIL) 
Date   T index  Conditions    
17 Apr    23    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      No data 
   Niue Island Region:
      No data 
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 30% during local day.
      Enhanced by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Mar      9
Apr      19
May      23


2. FORECAST (18 APRIL - 20 APRIL)
Date   T index  Conditions       MUFs                              
18 Apr     5    Normal           Near predicted monthly values/depressed 
                                 10 to 30%
19 Apr     0    Normal           Near predicted monthly values    
20 Apr    10    Normal           Near predicted monthly values   

COMMENT: SWS HF Communications Warning 11 was issued on 16 April 
and is current for 17-18 Apr. MUFs over the Australian regions 
were mostly near predicted monthly levels on UT day 17 April. 
Mild to moderate MUFs depressions are likely for 18-19 April 
due to the observed increase 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
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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