[Ips-dhfpr] IPS Daily HF Prop Report - 08 March 11

Regional Warning Centre rwc at ips.gov.au
Wed Mar 9 10:55:30 EST 2011


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 08/2330Z MARCH 2011 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (08 MARCH) 
Date   T index  Conditions    
08 Mar    73    Normal         

Flares    Max     Fadeout    Freq.  Sectors
  M1.3    0229UT  possible   lower  E. Asia/Aust.
  M1.5    0400UT  possible   lower  E. Asia/Aust.
  M5.3    1044UT  possible   lower  European
  M4.4    1829UT  possible   lower  East Pacific/
                                    North American
  M1.4    2027UT  possible   lower  East Pacific/
                                    North American
  M1.0    2223UT  possible   lower  West Pacific

MUFs:
   Cocos Island Region:
      Enhanced by 35% during local day,
      Enhanced by 40% during local night.
      Enhanced by 25% after local dawn.
   Niue Island Region:
      Enhanced by 45% during local day,
      Near predicted monthly values during local night.
   Northern Australian Region:
      Enhanced by 15% during local day,
      Enhanced by 100% during local night.
   Southern Australian and New Zealand Region:
      Near predicted monthly values during local day,
      Enhanced by 15% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values over the UT day.
      Proton event in progress, increased absorption observed.

PCA Event : 10Mev Proton/PCA Event Began 08 03 2011 0115UT and is in progress

Predicted Monthly T index for March:  40
2. FORECAST (09 MARCH - 11 MARCH)
Date   T index  Conditions       MUFs                              
09 Mar    50    Normal-Fair      5 to 15% above predicted monthly 
                                 values 
10 Mar    35    Normal           depressed 5 to 15%/near predicted 
                                 monthly values     
11 Mar    40    Normal           Near predicted monthly values    
COMMENT: IPS HF Communications Warning 21 was issued on 8 March 
and is current for interval 8-9 March (SWFs) . Significantly 
degraded conditions were observed at high latitudes during 8 
March due to a Polar Cap Absorption event. Mostly normal to good 
conditions should be observed for 9 March. Some slightly degraded 
conditions may be observed during 10 March in response to anticipated 
mildly increased geomagnetic activity on 9 March. SWFs possible 
for 9 March. 
----------------------------------------------------------
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.

IPS Radio and Space Services        email: asfc at ips.gov.au
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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