[Ips-dsgr] ASWFC Daily Report - 14 June 26 issued 2330 UT on 14 Jun 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Mon Jun 15 09:30:53 AEST 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/14 JUNE 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 14 JUNE AND FORECAST FOR 15 JUNE - 17 JUNE
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 14 Jun: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 14 Jun: 128/81
1B. SOLAR FORECAST
15 Jun 16 Jun 17 Jun
Activity R0, chance of R1 R0, chance of R1 R0, chance of R1
Fadeouts Possible Possible Possible
10.7cm/SSN 120/72 118/70 118/70
COMMENT: Solar flare activity on UT day 14-Jun was at the R0
level, with no flares above C2.0. There are currently four numbered
sunspot regions on the solar disk. Active region (AR) 4465 (N08W10,
beta-gamma) is the most magnetically complex region on the solar
disk, however this region could arguably be two magnetically
simple regions in close proximity to each other. ARs 4465 and
4468 (N11E39, beta) showed spot development over the UT day.
All other regions are either stable or in decay. Solar flare
activity over 15-17 Jun is expected to be at the R0 level, with
a chance of R1. S0 solar radiation storm conditions were observed
on UT day 14-Jun. S0 solar radiation storm conditions are expected
over 15-17 Jun. No geoeffective CMEs have been observed on 14-Jun.
A north directed CME is visible in SOHO imagery from 14/1936UT.
This event is associated with coronal movement behind the north
limb from 14/1916UT visible in GOES SUVI imagery. This is considered
a far side event. The solar wind speed was in decline over 14-Jun,
mostly ranging between 550 km/s and 450 km/s and is currently
at around 470 km/s. The peak total interplanetary field strength
(IMF, Bt) was 5 nT and the north-south IMF component (Bz) ranged
between +4 to -3 nT. A moderate increase in solar wind speed
is possible on 15-Jun due to an anticipated glancing impact from
a CME first observed on 12-Jun. A further moderate increase is
possible over 16-17 Jun due to a small coronal hole rotating
towards a geoeffective position.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 14 Jun: G0
Estimated Indices 14 Jun : A K
Australian Region 2 11120200
Cocos Island 2 11121100
Darwin 3 12220101
Townsville 4 22220201
Learmonth 5 21221211
Alice Springs 3 11220200
Gingin 3 21120111
Canberra 2 11120100
Kennaook Cape Grim 3 11121200
Hobart 3 11121200
Estimated Antarctic Regional K Indices 14 Jun :
Macquarie Island 3 11131100
Casey 6 32222111
Mawson 23 54443143
Observed Regional daily pc3 Indices 14 Jun :
Darwin NA
Townsville 0 (Quiet)
Learmonth 6 (Quiet)
Alice Springs 0 (Quiet)
Gingin 36 (Quiet to unsettled)
Canberra 39 (Quiet to unsettled)
Hobart 34 (Quiet to unsettled)
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 Jun : A
Fredericksburg 7
Planetary 8
Observed AFr/Ap Indices 13 Jun : A K
Fredericksburg 15
Planetary 13 3333 3242
2B. MAGNETIC FORECAST
Date Ap Conditions
15 Jun 15 G0, chance of G1
16 Jun 10 G0
17 Jun 10 G0
COMMENT: G0 geomagnetic conditions were observed on UT day 14-Jun
in the Australian region and at the planetary level. Mostly G0
geomagnetic conditions were observed in the Antarctic region,
with G1 conditions briefly observed at Mawson. G0 geomagnetic
conditions, with a chance of G1 are expected on 15-Jun due to
an anticipated glancing impact from a CME first observed on 12-Jun.
G0 conditions are expected over 16-17 Jun.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
14 Jun Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
15 Jun Normal Normal Normal-fair
16 Jun Normal Normal Normal-fair
17 Jun Normal Normal Normal-fair
COMMENT: HF radio propagation conditions on UT day 14-Jun were
mostly normal, with some mildly depressed conditions in the northern
hemisphere. HF radio propagation conditions are expected to be
mostly normal, with a chance of mild degradations over 15-17
Jun.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
14 Jun 82
Observed Australian Regional MUFs
Cocos Island Region:
No data available during local day.
No data available during local night.
Niue Island Region:
Enhanced by 20% during local day.
Near predicted monthly values during local night.
Enhanced by 25% after local dawn.
Northern Australian Region:
Enhanced by 15% during local day.
Near predicted monthly values during local night.
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
May 67
Jun 68
Jul 65
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
15 Jun 80 Near predicted monthly values
16 Jun 80 Near predicted monthly values
17 Jun 80 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region on UT day 14-Jun were mostly near predicted monthly values,
with enhancements in the northern Australian region during local
day. Significant spread F was observed at Hobart during local
night hours. Sporadic E was observed at Learmonth, also during
local night hours. MUFs are expected to be generally near predicted
monthly values over 15-17 Jun, with a chance of mildly degraded
conditions over the period.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 13 Jun
Daily Proton Fluence >1 MeV: 6.9E+05
Daily Proton Fluence >10 MeV: 1.7E+04
Daily Electron Fluence >2 MeV: 4.10E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 6%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B5.6
DSCOVR Satellite Solar Wind Day Averaged Data for 13 Jun
Speed: 508 km/sec Density: 0.6 p/cc Temp: 17100 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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