[Ips-dsgr] ASWFC Daily Report - 07 March 26 issued 2330 UT on 07 Mar 2026 [SEC=OFFICIAL]
Australian Space Weather Forecasting Centre
aswfc at bom.gov.au
Sun Mar 8 10:30:47 AEDT 2026
SUBJ: ASWFC DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/07 MARCH 2026
FROM THE AUSTRALIAN SPACE WEATHER FORECASTING CENTRE
SUMMARY FOR 07 MARCH AND FORECAST FOR 08 MARCH - 10 MARCH
STATUS INDICATORS SOL:** YELLOW ** MAG:** YELLOW ** ION: GREEN
ASWAS SCALE DESCRIPTION: https://bit.ly/3lmaMBx
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1A. SOLAR SUMMARY
Activity 07 Mar: R0
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 07 Mar: 143/97
1B. SOLAR FORECAST
08 Mar 09 Mar 10 Mar
Activity R0, chance R1 R0, chance R1 R0, chance R1
Fadeouts Possible Possible Possible
10.7cm/SSN 140/94 135/89 135/89
COMMENT: Solar activity on UT day 7-Mar was R0, with no solar
flares. There are currently four numbered sunspots on the solar
disk. Active region AR 4381 (N09W25, beta) has shown minor changes
in its trailing regions, but overall this region and all the
others are stable. Solar activity is expected to be R0 with a
chance for R1 over 8-10 Mar.
No Earth directed CMEs were observed on UT day 7-Mar.
S0 solar radiation storm conditions were observed on UT day 7-Mar.
S0 solar radiation storm conditions are expected over 8-10 Mar.
The solar wind environment on UT day 7-Mar was mildly disturbed.
The interplanetary magnetic field (IMF, Bt) observed a slow increase
at the start of the day, and then the solar wind speed observed an
increase towards the end of the day. This is likely a co-rotating
interation region (CIR) associated with a small equatorial coronal
hole. The peak Bt reached 11 nT and the north-south IMF component
range (Bz) was +10 to -8 nT, with a sustained period of southward
Bz at the start of the day. The solar wind speed increase from near
430 to near 690 km/s. The solar wind is expected to remain enhanced on 8-Mar
before returning to near background conditions. A CME first observed
on 6-Mar may pass nearby the Earth on late 9-Mar but is not expected
to have any significant impact.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 07 Mar: G0
Estimated Indices 07 Mar : A K
Australian Region 12 23322333
Cocos Island 9 32221332
Darwin 13 23322433
Townsville 12 33322323
Learmonth 14 23323343
Alice Springs 12 23322333
Gingin 22 33323553
Canberra 11 23322323
Kennaook Cape Grim 13 23323333
Hobart 12 23322333
Estimated Antarctic Regional K Indices 07 Mar :
Macquarie Island 17 33234433
Casey 27 35633333
Mawson 47 54443575
Observed Regional daily pc3 Indices 07 Mar :
Darwin 5 (Quiet)
Townsville 0 (Quiet)
Learmonth 2 (Quiet)
Alice Springs 4 (Quiet)
Gingin 4 (Quiet)
Canberra 9 (Quiet)
Hobart 29 (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 07 Mar : A
Fredericksburg 8
Planetary 8
Observed AFr/Ap Indices 06 Mar : A K
Fredericksburg 3
Planetary 4 1322 2113
2B. MAGNETIC FORECAST
Date Ap Conditions
08 Mar 18 G0, chance G1
09 Mar 20 G0
10 Mar 14 G0
COMMENT: ASWFC Geomagnetic Warning 14 was issued on 6 March and
is current for 7-8 Mar. Geomagnetic conditions in the Australian
region on UT day 7-Mar were G0. Geomagnetic conditions in the
Antarctic region were G0-G3. Isolated periods of G1 are possible
on 8-Mar due to ongoing coronal hole activity, but otherwise
mostly G0 geomagnetic conditions are expected. A slow CME is
expected to pass nearby the Earth late on 9-Mar but not expected
to make any significant impact.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
07 Mar Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
08 Mar Normal Normal Normal-fair
09 Mar Normal Normal Normal-fair
10 Mar Normal Normal Normal
COMMENT: HF radio propagation on UT day 7-Mar was mostly normal,
with some degradations setting in by the second half of the day
in the southern hemisphere. HF radio propagation is expected
to be mostly normal, although mild degradations are possible
at high latitudes over the next few days due to favourable solar
wind conditions caused by a small coronal hole.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
07 Mar 113
Observed Australian Regional MUFs
Cocos Island Region:
Mostly near predicted monthly values.
Enhanced by 20% after local dawn.
Niue Island Region:
Enhanced by 35% during local day.
Enhanced by 35% during local night.
Enhanced by 30% after local dawn.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Enhanced by 25% during local day.
Enhanced by 15% during local night.
Antarctic Region (Casey/Davis/Mawson):
Near predicted monthly values over the UT day.
Monthly T index:
Month T index
Feb 98
Mar 87
Apr 85
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
08 Mar 110 Near to 15% above predicted monthly values
09 Mar 100 Near predicted monthly values
10 Mar 100 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) in the Australian
region on UT day 7-Mar were near predicted values to 25% enhanced.
Spread-F was observed at Hobart during local night hours and
sporadic-E was observed at Brisbane during local night hours.
MUFs are expected to be near predicted values over 8-10 Mar,
with 15% enhancements on 8-Mar.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 06 Mar
Daily Proton Fluence >1 MeV: 1.5E+06
Daily Proton Fluence >10 MeV: 1.5E+04
Daily Electron Fluence >2 MeV: 3.20E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 5%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B5.6
DSCOVR Satellite Solar Wind Day Averaged Data for 06 Mar
Speed: 352 km/sec Density: 5.7 p/cc Temp: 45700 K Bz: -2 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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