[Ips-dhfpr] ASWFC Daily HF Prop Report - 10 February 23 issued 2331 UT on 10 Feb 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/10 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (10 FEBRUARY) 
Date   T index  Conditions    
10 Feb   100    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M3.7    0303UT  possible   lower  E. Asia/Aust.
  M1.4    0805UT  possible   lower  Mid East/Indian
  M1.2    1455UT  possible   lower  South American/
                                    Atlantic
  M1.7    1601UT  possible   lower  South American/
                                    Atlantic
  M1.3    2241UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Cocos Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15-30%.
   Niue Island Region:
      Enhanced by 35% during local day.
      Near predicted monthly values during local night.
      Enhanced by 30% after local dawn.
   Northern Australian Region:
      Enhanced by 20-30%.
   Southern Australian Region:
      Near predicted monthly values.
   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
Jan      119
Feb      75
Mar      76


2. FORECAST (11 FEBRUARY - 13 FEBRUARY)
Date   T index  Conditions       MUFs                              
11 Feb    95    Normal           Near to 15% above predicted 
                                 monthly values
12 Feb    95    Normal           Near to 15% above predicted 
                                 monthly values    
13 Feb    95    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: ASWFC SWF HF Communications Warning 15 was issued on 
10 February and is current for 11-13 Feb. Maximum usable frequencies 
(MUFs) in the Australian region were near predicted monthly values 
to 30% enhanced. Spread F was observed during local night hours 
at Hobart and Perth. Mildly depressed MUFs observed after local 
dawn at Hobart which is not expected to persist. MUFs are expected 
to be near predicted monthly values to 15% enhanced. Shortwave 
fadeouts are probable. Degraded HF conditions may be experienced 
14-15 Feb due to the anticipated arrival of a CME.

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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