[Ips-dhfpr] ASWFC Daily HF Prop Report - 16 February 23 issued 2331 UT on 16 Feb 2023 [SEC=OFFICIAL]

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SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/16 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (16 FEBRUARY) 
Date   T index  Conditions    
16 Feb    80    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.1    0032UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Depressed by 20% during local day.
      Depressed by 15% during local night.
      Enhanced by 35% after local dawn.
   Niue Island Region:
      Enhanced by 20% during local day.
      Enhanced by 25% during local night.
   Northern Australian Region:
      Enhanced by 15% during local day.
      Enhanced by 35% during local night.
   Southern Australian Region:
      Depressed by 15% during local day.
      Near predicted monthly values 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
Jan      119
Feb      75
Mar      76


2. FORECAST (17 FEBRUARY - 19 FEBRUARY)
Date   T index  Conditions       MUFs                              
17 Feb    80    Normal           Near predicted monthly values
18 Feb    60    Fair             Near predicted monthly values to 15% depressed 
 
19 Feb    80    Normal-fair      Near predicted monthly values   

COMMENT: ASWFC SWF HF Communications Warning 17 was issued on 
15 February and is current for 15-17 Feb. Maximum usable frequencies 
(MUFs) in the Southern Australian region on 16-Feb were depressed 
by 15%. MUFs in the Northern Australian region on 16-Feb were 
up to 15% enhanced, with periods of up to 35% enhancements during 
local night. Spread F was observed at Hobart. MUFs are expected 
to be near predicted monthly values over 17-19 Feb. MUF depressions 
are possible over 17-18 Feb due to anticipated increased geomagnetic 
activity. Shortwave fadeouts are possible.

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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