[Ips-dhfpr] ASWFC Daily HF Prop Report - 29 November 22 issued 2331 UT on 29 Nov 2022 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/29 NOVEMBER 2022
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 NOVEMBER) 
Date   T index  Conditions    
29 Nov    42    Fair           

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
   Niue Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
   Northern Australian Region:
      Near predicted monthly values.
   Southern Australian Region:
      Depressed by 20% 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
Oct      83
Nov      70
Dec      70


2. FORECAST (30 NOVEMBER - 02 DECEMBER)
Date   T index  Conditions       MUFs                              
30 Nov    45    Normal-fair      Depressed 10 to 15%/near predicted 
                                 monthly values
01 Dec    45    Normal-fair      Depressed 10 to 15%/near predicted 
                                 monthly values    
02 Dec    50    Normal-fair      Depressed 5 to 10%/near predicted 
                                 monthly values   

COMMENT: ASWFC Preliminary HF Communications Warning 90 was issued 
on 27 November and is current for 30 Nov to 1 Dec. Maximum usable 
frequencies (MUFs) on UT day 29-Nov varied from near predicted 
monthly values to 25% depressed due to geomagnetic activity caused 
by coronal hole high speed wind stream effects. Periods of sporadic 
E was observed across the Australian region during local evening 
and night. MUFs are generally expected to be near predicted monthly 
values to mildly depressed over 30-Nov to 2-Dec. Degraded HF 
conditions may be experienced during local night hours on 30-Nov 
to 02-Dec for the southern Australian region due to mildly enhanced 
geomagnetic conditions induced by coronal hole wind streams.

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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