[Ips-dsgr] ASWFC Daily Report - 06 August 26 issued 2330 UT on 06 Aug 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Fri Aug 7 09:30:49 AEST 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/06 AUGUST 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 06 AUGUST AND FORECAST FOR 07 AUGUST - 09 AUGUST
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 06 Aug: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 06 Aug: 101/49
1B. SOLAR FORECAST
07 Aug 08 Aug 09 Aug
Activity R0, chance of R1 R0, chance of R1 R0, chance of R1
Fadeouts None expected None expected None expected
10.7cm/SSN 98/45 95/41 90/34
COMMENT: Solar flare activity on UT day 06-Aug was at the R0
level, with no significant flares observed. There are currently
four sunspot regions on the visible solar disk, with Active Region
(AR) 4498 (N15W56, beta) being the largest. This region has remained
stable over the past UT day. All other regions are either stable
or in decay. Solar flare activity is forecast to remain at the
R0 level over 07-09 Aug, with a chance of R1 due to the presence
of region 4498. Solar radiation storm conditions were at the
S0 level throughout 06-Aug, and are forecast to remain at the
S0 level over 07-09 Aug. No Earth-directed coronal mass ejections
(CMEs) have been observed during the UT day. The solar wind speed
was at a slowly declining light level over 06-Aug, broadly ranging
between 280-350 km/s throughout the UT day. The interplanetary
magnetic field strength (IMF, Bt) remained low during 06-Aug,
peaking at 4 nT. The north-south component (Bz) of the IMF ranged
between -3 and +3 nT over the UT day. The solar wind is expected
to rising during 07-Aug due to the glancing impacts of the CMEs
first observed on 03-Aug and rise again on 08-Aug due to a glancing
CME impact possible at Earth from a CME first observed 04/1323UT.
winds are then forecast to ease back to background levels on
09-Aug.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 06 Aug: G0
Estimated Indices 06 Aug : A K
Australian Region 0 11000000
Cocos Island 0 01100000
Darwin 1 11000001
Townsville 1 11100001
Learmonth 1 11100000
Alice Springs 0 10100000
Gingin 0 11000000
Canberra 0 01000000
Kennaook Cape Grim 0 01000000
Hobart 0 01001000
Estimated Antarctic Regional K Indices 06 Aug :
Macquarie Island 0 00001000
Casey 2 22110000
Mawson 5 42200110
Observed Regional daily pc3 Indices 06 Aug :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 0 (Quiet)
Hobart 0 (Quiet)
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.
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.
Estimated AFr/Ap Indices 06 Aug : A
Fredericksburg 3
Planetary 4
Observed AFr/Ap Indices 05 Aug : A K
Fredericksburg 3
Planetary 3 1110 0111
2B. MAGNETIC FORECAST
Date Ap Conditions
07 Aug 12 G0, slight chance of G1
08 Aug 12 G0, slight chance of G1
09 Aug 11 G0
COMMENT: G0 geomagnetic conditions were observed in the Australian
region on 06-Aug, with G0 conditions also recorded at the planetary
level. G0 geomagnetic conditions were reported in the Antarctic
region. G0, with a slight chance of G1 conditions are forecast
on 07-08 Aug due to the glancing impacts of several CMEs observed
over 03-Aug and 04-Aug. G0 geomagnetic conditions are forecast
for 09-Aug.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
06 Aug Normal Normal Fair-normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
07 Aug Normal Normal Normal-fair
08 Aug Normal Normal Normal-fair
09 Aug Normal Normal Normal
COMMENT: Global high-frequency (HF) radio propagation conditions
on UT day 06-Aug were mostly normal, with fair conditions reported
in high latitude northern hemisphere locations. Degradations
were also observed in North American regions early in the UT
day and across the Atlantic and Europe late in the UT day. Global
HF propagation conditions are forecast to be mostly normal over
the period 07-09 Aug.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
06 Aug 58
Observed Australian Regional MUFs
Cocos Island Region:
No data available during local day.
No data available during local night.
Niue Island Region:
No data available during local day.
No data available during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
Monthly T index:
Month T index
Jul 75
Aug 64
Sep 61
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
07 Aug 70 Near predicted monthly values
08 Aug 70 Near predicted monthly values
09 Aug 70 Near predicted monthly values
COMMENT: Maximum Usable Frequencies (MUFs) on UT day 06-Aug in
the Australian region were mostly near predicted values. Strong
spread-F and sporadic E were observed during local night hours
at Darwin, with spread-F also observed at Learmonth. MUFs are
forecast to remain near predicted values over 07-09 Aug.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 05 Aug
Daily Proton Fluence >1 MeV: 1.6E+05
Daily Proton Fluence >10 MeV: 1.9E+04
Daily Electron Fluence >2 MeV: 1.50E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 3%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B3.7
DSCOVR Satellite Solar Wind Day Averaged Data for 05 Aug
Speed: 366 km/sec Density: 1.3 p/cc Temp: 62900 K Bz: 0 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
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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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