[Ips-dhfpr] ASWFC Daily HF Prop Report - 06 March 23 issued 2330 UT on 06 Mar 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/06 MARCH 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (06 MARCH) 
Date   T index  Conditions    
06 Mar    98    Normal         

Flares    Max     Fadeout    Freq.  Sectors
 M5/--    0228UT  possible   lower  E. Asia/Aust.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Near predicted monthly values during local night.
      Enhanced by 40% after local dawn.
   Niue Island Region:
      Enhanced by 15% during local day.
      Near predicted monthly values during local night.
      Enhanced by 25% after local dawn.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 20% during local night.
      Enhanced by 35% after local dawn.
   Southern Australian Region:
      Depressed by 25% 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
Feb      117
Mar      80
Apr      80


2. FORECAST (07 MARCH - 09 MARCH)
Date   T index  Conditions       MUFs                              
07 Mar    90    Normal           Near predicted monthly values
08 Mar   110    Normal           Near predicted monthly values    
09 Mar   110    Normal           Near predicted monthly values 
                                 to 20% enhanced   

COMMENT: ASWFC HF Communications Warning 27 was issued on 5 March 
and is current for 6-7 Mar. ASWFC SWF HF Communications Warning 
28 was issued on 6 March and is current for 7-8 Mar. Maximum 
usable frequencies (MUFs) on UT day 06-Mar were enhanced by 20% 
in the northern Australian regions, but near predicted values 
to 25% depressed in the southern Australian regions. Sporadic-E 
was observed during local night hours at Brisbane and Hobart. 
Scintillation was observed at Weipa from 06/1225-1226UT. A shortwave
fadeout was observed from 06/0218-0335UT due to an R2 flare. MUFs 
are expected to be near predicted values in the southern Australian 
region over 7-9 Mar, and near predicted values to 20% enhanced 
in the northern Australian region over 7-9 Mar. More enhancements 
may be observed by the end of the period.

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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