[Ips-dhfpr] SWS Daily HF Prop Report - 18 September 21 issued 2335 UT on 18 Sep 2021

[rwc]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 SEPTEMBER 2021 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 SEPTEMBER) 
Date   T index  Conditions    
18 Sep    11    Normal-fair    

Flares: none.

MUFs:
   Cocos Island Region:
      No data available.
   Niue Island Region:
      No data available.
   Northern Australian Region:
      Depressed by 15% during local day.
      Depressed to 25% during local night.
   Southern Australian Region:
      Depressed by 20% during local day.
      Depressed by 25% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Depressed by 15% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Aug      14
Sep      27
Oct      30


2. FORECAST (19 SEPTEMBER - 21 SEPTEMBER)
Date   T index  Conditions       MUFs                              
19 Sep    15    Normal           Near predicted monthly values
20 Sep    15    Normal           Near predicted monthly values    
21 Sep    15    Normal           Near predicted monthly values   

COMMENT: MUFs in the Australian region on UT day 18 September 
were mostly near predicted monthly values to 25% depressed. Night 
spread F was observed at Canberra. MUFs in the Australian region 
on 19-21 September are expected to be near predicted monthly 
values to mildly depressed.

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