[Ips-wgr] IPS Weekly Geo. Report (20 August 15) issued 0203 UT on 20 Aug 2015

[rwc]

SUBJ: IPS WEEKLY GEOPHYSICAL REPORT 
ISSUED ON 20 AUGUST 2015, BY IPS RADIO AND SPACE SERVICES,
FROM THE AUSTRALIAN SPACE FORECAST CENTRE

1. SUMMARY (11 AUGUST - 19 AUGUST)
K indices are in UT (0-24). For conversion to local time:

AEST = UT + 10 hours; ACST = UT + 9.5 hours; AWST = UT + 8 hours
        Australian Region*              
 Date     K-INDICES    A               
 11 Aug   2222 2001    4  
 12 Aug   2221 2222    6  
 13 Aug   2222 2110    5  
 14 Aug   0100 0001    0  
 15 Aug   2245 5432   23  In the IPS magnetometer data for 15 
                          Aug, a weak (19nT) impulse was observed 
                          at 0829UT and a weak (19nT) impulse 
                          was observed at 1306UT.
 16 Aug   3353 3332   18  
 17 Aug   2344 4322   16  
 18 Aug   2321 1201    5  
 19 Aug   3233 4321   13  

*estimated from real time data

NOTE: Indices may have been generated from data obtained in 
cooperation with the following organisations: Geoscience Australia, 
University of Newcastle Space Physics Group, Australian Government 
Antarctic Division and International Center for Space Weather 
Science and Education, Japan.


Active to minor storm levels on 15-17 Aug.   Quiet to unsettled on other days. 

The 7-day outlook is for mildly distributed conditions on 20-21 Aug and then
latter during the week,
possibly between 24-26 Aug. These are due to two separate Coronal Holes taking
geoeffective position
on the solar disk. Quiet condition are forecasted on other days.

2. FORECAST (20 AUGUST - 19 SEPTEMBER)
Disturbed Periods: 
27-28 Aug,  2-4 Sep,  10-15 Sep

Best Quiet Periods: 
22-26 Aug,  29 Aug - 1 Sep, 5-9 Sep, 16-19 Sep.


3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions: All periods are considered to be Best Quiet.

Central Australian Regions:
 Moderately Disturbed Periods: 20-22 Aug,  27-30 Aug,  2-6 Sep, 12-13 Sep, 16-17
Sep
 Best Quiet Periods:  31 Aug - 1 Sep,  7-11 Sep,  14-15 Sep, 18-19 Sep

Southern Australian Regions:
 Disturbed Periods: 20-22 Aug,  27-30 Aug,  2-6 Sep, 12-13 Sep, 16-17 Sep
 Best Quiet Periods: 31 Aug - 1 Sep,  7-11 Sep,  14-15 Sep, 18-19 Sep

Pc3 pulsations are high frequency (10-45 second period) variations 
of the Earths magnetic field. Daily pc3-indices are the daily sum of 
20 minute pc3-indices for that station and have been shown to be well 
correlated with rejection of high resolution aeromagnetic survey 
flight-line data.

PLEASE NOTE:
Geomagnetic activity can frequently be determined by short timescale 
solar events that cannot be forecast a week in advance, particularly
at solar maximum.

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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