[Ips-dhfpr] IPS Daily HF Prop Report - 31 May 06

rwc rwc at ips.gov.au
Thu Jun 1 09:40:20 EST 2006


SUBJ: IPS DAILY HF PROPAGATION REPORT
ISSUED AT 31/2330Z MAY 2006 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
AUSTRALIAN REGION SUMMARY AND FORECAST

1. SUMMARY (31 MAY) 
Date   T index  Conditions    
31 May    28    Normal         

Flares: none.

MUFs:
Currently slightly above predicted monthly values
Likely to be suppressed in the next 2-3 days.

PCA Event : No event.

Predicted Monthly T index for May:  15
2. FORECAST (01 JUNE - 03 JUNE)
Date   T index  Conditions       MUFs                              
01 Jun    23    Normal-Fair      about 15% below predicted monthly 
                                 values 
02 Jun    17    Normal-Fair      about 15% below predicted monthly 
                                 values     
03 Jun    15    Normal-Fair      about 20% below predicted monthly 
                                 values    
COMMENT: IPS HF Communications Warning 8 was issued on 31 May 
and is current for interval 1 June only. As the effects of the 
coronal hole solar wind speed increase take effect on the geomagnetic 
field, it will supress the ionosphere in the next 2-3 days. Depressions 
of up to 30% are possible and likely to average 15-20%. Spread 
F is already occurring at most tropical and some mid-latitude 
stations, particularly night and pre-dawn. This is likely to 
continue and degrade night time communications at all latitudes 
over the next 2-3 days together with reduced MUFs. 
----------------------------------------------------------
For an explanation of some of the terms in this report, goto
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 

IMPORTANT: This e-mail, including any attachments, may contain,confidential
or copyright information.  The views expressed in this message are those of
the individual sender, unless specifically stated to be the views of IPS.
If you are not the intended recipient, please contact the sender immediately
and delete all copies of this e-mail and attachments. Occasionally IPS sends 
email promoting IPS products and services to its mailing list customers. 
If you do not wish to receive this promotional material please email 
no-spam at ips.gov.au with the subject header:UNSUBSCRIBE"





More information about the ips-dhfpr mailing list