[Ips-dhfpr] IPS Daily HF Prop Report - 18 July 15 issued 2330 UT on 18 Jul 2015

Regional Warning Centre rwc at ips.gov.au
Sun Jul 19 09:30:36 EST 2015


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 2330UT/18 JULY 2015 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (18 JULY) 
Date   T index  Conditions    
18 Jul    50    Normal         

Flares: none.

MUFs:
   Cocos Island Region:
      Enhanced by 20% during local day.
      Depressed by 40% during local night.
      Depressed by 20% after local dawn.
   Niue Island Region:
      Near predicted monthly values during local day.
      Depressed by 30% during local night.
   Northern Australian Region:
      Depressed by 25% during local day.
      Depressed by 35% during local night.
      Depressed by 20% after local dawn.
   Southern Australian and New Zealand Region:
      Depressed by 15% during local day.
      Depressed by 15% 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
Jun      70
Jul      84
Aug      82


2. FORECAST (19 JULY - 21 JULY)
Date   T index  Conditions       MUFs                              
19 Jul    55    Normal           Depressed 15%/near predicted 
                                 monthly values
20 Jul    50    Normal           15 to 20% below predicted monthly 
                                 values    
21 Jul    50    Normal           15 to 20% below predicted monthly 
                                 values   

COMMENT: IPS HF Communications Warning 24 was issued on 17 July 
and is current for 18-20 Jul. MUF depressions of up to 20% have 
been seen across much of the Australian region over the last 
24 hours. These conditions are due to low levels of ionising 
solar flux. IPS HF Warning 15/24 has been issued and is current 
for the next 2 days.

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

Space Weather Services              email: asfc at ips.gov.au
Bureau of Meteorology
PO Box 1386                         WWW: http://www.ips.gov.au
Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp.ips.gov.au 
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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