[Ips-dsgr] ASWFC Daily Report - 08 July 26 issued 2330 UT on 08 Jul 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Thu Jul 9 09:30:49 AEST 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/08 JULY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 08 JULY AND FORECAST FOR 09 JULY - 11 JULY
STATUS INDICATORS SOL:** YELLOW ** MAG:** YELLOW ** ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 08 Jul: R1
Flares Max Fadeout Freq. Sectors
M1.5 1756UT possible lower South American/
Atlantic
Observed 10.7 cm flux/Equivalent Sunspot Number for 08 Jul: 116/68
1B. SOLAR FORECAST
09 Jul 10 Jul 11 Jul
Activity R0-R1 R0-R1 R0-R1
Fadeouts Possible Possible Possible
10.7cm/SSN 115/66 115/66 115/66
COMMENT: Solar flare activity on UT day 8-jul was R1, with an
isolated M1.5 flare from active sunspot region (AR) 4482 (S08E24,
beta). There are currently three numbered sunspots on the solar
disk. AR 4485 (S09W29, beta) did show growth in the past day
but likely reached maturity to begin its decay phase. Solar activity
is expected to be R0-R1 over 9-11 Jul.
No Earth-directed CMEs were observed on UT day 8-Jul.
S0 solar radiation storm conditions were observed on UT day 8-Jul.
S0 solar radiation storm conditions are expected over 9-11 Jul.
The solar wind environment on UT day 8-Jul was mildly disturbed
due to possible weak glancing blow from a CME launched on 3-Jul,
then later the likely entry into a recurrent coronal hole wind stream.
The solar wind speed ranged from 370 to 410 km/s. The peak total
interplanetary field strength (IMF, Bt) was 10 nT and the north-south
IMF component range was +2 to -7nT. Solar wind parameter Bz has
been oriented southward intermittently throughout the day.
The solar wind is expected to remain mildly disturbed over 9-10 Jul,
returning to background levels by 11-Jul.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 08 Jul: G0
Estimated Indices 08 Jul : A K
Australian Region 8 12322231
Cocos Island 3 11121120
Darwin 6 12322121
Townsville 8 12322231
Learmonth 9 22323230
Alice Springs 7 12322230
Gingin 10 22333231
Canberra 6 12322220
Kennaook Cape Grim 11 12433231
Hobart 10 12423231
Estimated Antarctic Regional K Indices 08 Jul :
Macquarie Island 22 13644232
Casey 6 22222121
Mawson 34 45533364
Observed Regional daily pc3 Indices 08 Jul :
Darwin NA
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 08 Jul : A
Fredericksburg 10
Planetary 11
Observed AFr/Ap Indices 07 Jul : A K
Fredericksburg 4
Planetary 4 1211 1012
2B. MAGNETIC FORECAST
Date Ap Conditions
09 Jul 16 G0-G1
10 Jul 14 G0, chance G1
11 Jul 8 G0
COMMENT: ASWFC Geomagnetic Warning 43 was issued on 7 July and
is current for 7-9 Jul. G0 geomagnetic conditions were observed
in the Australian region on UT day 8-Jul. G0-G2 geomagnetic conditions
were observed in the Antarctic region. G0-G1 geomagnetic conditions
are expected over 9-10 Jul due to ongoing coronal hole effect
and prolonged southward solar wind Bz conditions on 9-Jul. Conditions
likely to return to G0 by 11-Jul.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
08 Jul Normal-fair Normal-fair Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
09 Jul Normal-fair Normal-fair Normal-fair
10 Jul Normal-fair Normal-fair Normal-fair
11 Jul Normal Normal Normal-fair
COMMENT: HF radio propagtion conditions on UT day 8-Jul were
mostly normal to mildly degraded, particularly in the northern
hemisphere. HF radio propagation conditions are expected to continue
to be mildly degraded over 9-10 Jul, returning to normal by 11-Jul.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
08 Jul 72
Observed Australian Regional MUFs
Cocos Island Region:
No data available during local day.
No data available during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Mostly near predicted monthly values.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Depressed by 20% over the UT day.
Monthly T index:
Month T index
Jun 81
Jul 66
Aug 63
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
09 Jul 60 Near predicted monthly values to 10-15% depressed
10 Jul 60 Near predicted monthly values to 10-15% depressed
11 Jul 70 Near predicted monthly values to 10-15% depressed
COMMENT: Maximum usable frequencies (MUFs) on UT day 8-Jul were
mostly near predicted monthly values in the Australian region.
MUFs are expected to be mostly near predicted values over 9-11
Jul, with some mild depressions of 10-15% possible during local
night hours over 9-10 Jul.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 07 Jul
Daily Proton Fluence >1 MeV: 1.2E+05
Daily Proton Fluence >10 MeV: 2.0E+04
Daily Electron Fluence >2 MeV: 2.30E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:16%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B9.3
DSCOVR Satellite Solar Wind Day Averaged Data for 07 Jul
Speed: 420 km/sec Density: 2.8 p/cc Temp: 148000 K Bz: 1 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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