[Ips-dhfpr] SWS Daily HF Prop Report - 24 February 19 issued 2330 UT on 24 Feb 2019 [SEC=UNCLASSIFIED]

[Regional Warning Centre]

SUBJ: SWS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/24 FEBRUARY 2019 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (24 FEBRUARY) 
Date   T index  Conditions    
24 Feb   -15    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 15% during local day.
      Enhanced by 55% during local night.
   Niue Island Region:
      No data available during local day.
      No data available during local night.
   Northern Australian Region:
      Depressed by 20% during local day.
      Near predicted monthly values during local night.
   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      -27
Feb      -12
Mar      -13


2. FORECAST (25 FEBRUARY - 27 FEBRUARY)
Date   T index  Conditions       MUFs                              
25 Feb   -15    Normal           Near predicted monthly values
26 Feb   -15    Normal           Near predicted monthly values    
27 Feb   -15    Normal-fair      Near predicted monthly values   

COMMENT: On UT day 24 February, MUFs were mostly near monthly 
predicted levels over most of the Australian region. The Cocos 
Island region experienced mild to moderate enhancements during 
both the local day and local night. The Northern Australian region 
experienced mild depressions during the local day. Some periods 
of sporadic E layers were seen across the region. During the 
next three UT days, 25-27 February, MUFs are expected to be mostly 
near monthly predicted levels. However, mild to moderate depressions 
are possible due to continued very low levels of ionising radiation 
from the Sun and expected disturbed geomagnetic conditions associated 
with a coronal hole on 27 February.

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For an explanation of some of the terms in this report, go to
http://www.sws.bom.gov.au, and follow links to Educational->
Glossary on Solar Terrestrial Terms.

Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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