[Ips-dhfpr] ASWFC Daily HF Prop Report - 14 September 22 issued 2331 UT on 14 Sep 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/14 SEPTEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (14 SEPTEMBER) 
Date   T index  Conditions    
14 Sep    86    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 M1/--    1019UT  possible   lower  European

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 30% during local night.
   Niue Island Region:
      Enhanced by 20-35%.
   Northern Australian Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   Southern Australian Region:
      Mostly near predicted monthly values.
      Enhanced by 20% after local dawn.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Enhanced by 30% over the UT day.

PCA Event : No event.

Monthly T index:
Month  T index
Aug      53
Sep      68
Oct      69


2. FORECAST (15 SEPTEMBER - 17 SEPTEMBER)
Date   T index  Conditions       MUFs                              
15 Sep    75    Normal           About 15% above predicted monthly 
                                 values
16 Sep    75    Normal-fair      About 15% above predicted monthly 
                                 values    
17 Sep    75    Normal           Near predicted monthly values   

COMMENT: Maximum usable frequencies (MUFs) on UT day 14-Sep were 
mostly near predicted monthly values to 30% enhanced. Spread 
F was observed during local night hours at Hobart, indicating 
mildly degraded overnight HF conditions for the south-east Australian 
region. Regional MUFs are expected to be mostly near to 15% above 
predicted monthly values during 15-17 Sep, with mildly degraded 
HF conditions possible during local night hours and briefly after 
local dawn for southern region Australia only, in association 
with an anticipated mild increase in geomagnetic activity from 
a coronal hole wind stream.

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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.

Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au