[Ips-dhfpr] ASWFC Daily HF Prop Report - 04 February 23 issued 2331 UT on 04 Feb 2023 [SEC=OFFICIAL]

[Regional Warning Centre]

SUBJ: ASWFC DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/04 FEBRUARY 2023
FROM THE AUSTRALIAN SPACE WEATHER FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (04 FEBRUARY) 
Date   T index  Conditions    
04 Feb   132    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 25% during local day.
      Enhanced by 75% during local night.
      Enhanced by 50% after local dawn.
   Niue Island Region:
      Enhanced by 35% during local day.
      Enhanced by 20% during local night.
   Northern Australian Region:
      Enhanced by 30% during local day.
      Enhanced by 30% during local night.
   Southern Australian Region:
      Enhanced by 20% during local day.
      Enhanced by 20% during local night.
      Enhanced by 20% after local dawn.
   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 (05 FEBRUARY - 07 FEBRUARY)
Date   T index  Conditions       MUFs                              
05 Feb   130    Normal           Near to 15% above predicted 
                                 monthly values
06 Feb   125    Normal           Near to 15% above predicted 
                                 monthly values    
07 Feb   120    Normal           Near to 15% above predicted 
                                 monthly values   

COMMENT: Maximum usable frequencies (MUFs) in the Australian 
region on UT day 4-Feb were 20-30% enhanced. Sporadic E was observed 
throughout the Australian region. Spread F was observed at Hobart 
during local night. MUFs are expected to be near predicted monthly 
values to 15% enhanced over 5-7 Feb, with a chance of depressions 
over 6-7 Feb due to possible geomagnetic activity caused by a 
group of equatorial coronal holes currently rotating towards 
a geoeffective position and possible glancing impacts from CMEs 
first observed on 3-Feb and 4-Feb. Sporadic E is possible during 
local night, affecting lower frequencies.

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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