[Ips-wgr] ASWFC Weekly Geo. Report (26 June 25) issued 0042 UT on 26 Jun 2025 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Thu Jun 26 10:42:25 AEST 2025
SUBJ: ASWFC WEEKLY GEOPHYSICAL REPORT
ISSUED ON 26 JUNE 2025
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
1. SUMMARY (17 JUNE - 25 JUNE)
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
17 Jun 1211 1222 5
18 Jun 2122 2212 6
19 Jun 2221 1033 7
20 Jun 1232 2220 6
21 Jun 1211 3212 6
22 Jun 3221 1121 6
23 Jun 2212 1111 4
24 Jun 0222 2221 5
25 Jun 1112 2233 7
*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.
Quiet to unsettled conditions.
2. FORECAST (26 JUNE - 26 JULY)
Disturbed Periods:
26-Jun to 1-Jul, 22-26 Jul
Best Quiet Periods:
8-20 Jul
3. FORECAST FOR HIGH RESOLUTION AEROMAGNETIC SURVEYS
Northern Australian Regions:
Disturbed Periods: None.
Mildly disturbed periods: 26-27 Jun
Best Quiet Periods: 2-20 Jul
Central Australian Regions:
Disturbed Periods: None.
Mildly Disturbed Periods: 26-Jun to 1-Jul, 22-26 Jul
Best Quiet Periods: 4-20 Jul
Southern Australian Regions:
Disturbed Periods: 26-Jun to 1-Jul
Mildly disturbed periods: 14-15 Jul, 21-Jul, 22-26 Jul
Best Quiet Periods: 4-13 Jul,
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.
Australian Space Weather Forecasting Centre
Bureau of Meteorology
ASWFC at bom.gov.au
www.bom.gov.au | www.sws.bom.gov.au
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