[Ips-dsgr] ASWFC Daily Report - 14 July 26 issued 2330 UT on 14 Jul 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Wed Jul 15 09:30:52 AEST 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/14 JULY 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 14 JULY AND FORECAST FOR 15 JULY - 17 JULY
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 14 Jul: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 14 Jul: 100/48
1B. SOLAR FORECAST
15 Jul 16 Jul 17 Jul
Activity R0, chance R1 R0 R0
Fadeouts None expected None expected None expected
10.7cm/SSN 105/54 108/58 108/58
COMMENT: Solar activity on UT day 14-Jul was R0, with no solar
flares. There are currently three numbered sunspot regions on
the solar disk, although all visible regions are currently stable.
Solar activity is expected to be R0 with a chance for R1 over
15-17 Jul.
No Earth directed CMEs were observed on UT day 14-Jul.
S0 solar radiation storm conditions were observed on UT day 14-Jul.
S0 solar radiation storm conditions are expected over 15-17 Jul.
The solar wind environment on UT day 14-Jul was mildly disturbed,
with a weak CME impact at 1438 UT. The solar wind speed ranged
from 340 to 450 km/s. The peak total interplanetary field strength
(IMF, Bt) was 14 nT and the north-south IMF component range (Bz)
was +12 to -5 nT. The solar wind environment is expected to remain
mildly disturbed on 15-Jul due to a second possible weak CME
impact and a brief influence from a small coronal hole wind stream.
The solar wind environment is expected to return to background
conditions over 16-17 Jul.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 14 Jul: G0
Estimated Indices 14 Jul : A K
Australian Region 3 22110111
Cocos Island 3 11120111
Darwin 4 22111211
Townsville 5 22111221
Learmonth 5 22220221
Alice Springs 3 12110211
Gingin 4 22120111
Canberra 1 11110100
Kennaook Cape Grim 3 22120110
Hobart 2 21110110
Estimated Antarctic Regional K Indices 14 Jul :
Macquarie Island 3 21030000
Casey 7 23231111
Mawson 23 34322246
Observed Regional daily pc3 Indices 14 Jul :
Darwin 5 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 8 (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 14 Jul : A
Fredericksburg 8
Planetary 8
Observed AFr/Ap Indices 13 Jul : A K
Fredericksburg 8
Planetary 9 2221 222-
2B. MAGNETIC FORECAST
Date Ap Conditions
15 Jul 10 G0
16 Jul 8 G0
17 Jul 6 G0
COMMENT: G0 geomagnetic conditions were observed on UT day 14-Jul
in the Australian and Antarctic regions. G0 geomagnetic conditions
are expected over 15-17 Jul. A weak CME impact is possible on
15-Jul but not expected to induce geomagnetic activity.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
14 Jul Normal-fair Normal-fair Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
15 Jul Normal-fair Normal Normal-fair
16 Jul Normal Normal Normal
17 Jul Normal Normal Normal
COMMENT: HF radio propagation conditions on UT day 14-Jul were
mostly normal, with mild degradations during local dawn hours
across the globe. HF radio propagation conditions are expected
to be mostly normal over 15-17 Jul, with brief degradations possible
during local dawn hours on 15-Jul.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
14 Jul 71
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 during local day.
Depressed by 25% during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Southern Australian Region:
Mostly near predicted monthly values.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values 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
15 Jul 75 Near predicted monthly values
16 Jul 75 Near predicted monthly values
17 Jul 85 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region on UT day 14-Jul were mostly near predicted values to
15% depressed. Spread-F was common during local night hours in
Brisbane, Darwin and Townsville. Heavily degraded HF propagation
conditions were observed in Hobart during local night and dawn
hours. MUFs are expected to be mostly near predicted values over
15-17 Jul, with HF propagation conditions in Australian sites
recovering to normal on 15-Jul.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 13 Jul
Daily Proton Fluence >1 MeV: 5.4E+05
Daily Proton Fluence >10 MeV: 1.8E+04
Daily Electron Fluence >2 MeV: 5.80E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 7%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B4.3
DSCOVR Satellite Solar Wind Day Averaged Data for 13 Jul
Speed: 429 km/sec Density: 2.6 p/cc Temp: 48500 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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