[Ips-dhfpr] IPS Daily HF Prop Report - 29 March 01

[rwc]

SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 29/2330Z MARCH 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (29 MARCH) 
Date   T index  Conditions    
29 Mar   175    Normal-fair    

Flares    Max     Fadeout    Freq.  Sectors
  M1.3 28/2301UT  possible   lower  West Pacific
  M2.2 28/2331UT  possible   lower  West Pacific
  M2.1    0257UT  possible   lower  E. Asia/Aust.
  X1.7    1016UT  probable   all    European
  M1.7    1419UT  possible   lower  South American/
                                    Atlantic
  M1.4    1435UT  possible   lower  South American/
                                    Atlantic
  M1.5    1459UT  possible   lower  South American/
                                    Atlantic
  M1.2    1527UT  possible   lower  South American/
                                    Atlantic
  M1.2    2102UT  possible   lower  East Pacific/
                                    North American

MUFs:
   Equatorial PNG Region:
      Enhanced by 15-30% during local night.
   Northern Australian Region:
      Enhanced by 15-45% during local day,
   Southern Australian and New Zealand Region:
      Enhanced by 15-35% during local day,
   Antarctic Region (Casey/Scott Base):
      Near predicted monthly values over the UT day.


Predicted Monthly T index for March: 115
2. FORECAST (30 MARCH - 01 APRIL)
Date   T index  Conditions       MUFs                              
30 Mar   120    Fair             Enhanced 15%, then depressed 
                                 15% later in UT day. 
31 Mar    80    Poor             depressed 15 to 30%/near predicted 
                                 monthly values     
01 Apr    60    Normal-Fair      depressed 20 to 40%/near predicted 
                                 monthly values    
COMMENT: IPS HF Communications Warning 15 was issued on 28 March 
and is current for interval 30 March to 1 April. Enhanced MUFs 
observed yesterday. Depressed MUFs and degraded HF conditions 
expected beginning late 30 Mar. Mid latitude MUFs are expected 
to become significantly degraded/depressed in association with 
anticipated geomagnetic activity 30-31 Mar. Proton event from
X1 flare degraded polar HF circuits.

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