[Ips-dsgr] SWS Daily Report - 08 June 20 issued 2331 UT on 08 Jun 2020
Regional Warning Centre
rwc at ips.gov.au
Tue Jun 9 09:31:28 EST 2020
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/08 JUNE 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 08 JUNE AND FORECAST FOR 09 JUNE - 11 JUNE
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 08 Jun: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 08 Jun: 71/6
1B. SOLAR FORECAST
09 Jun 10 Jun 11 Jun
Activity Very low to low Very low to low Very low to low
Fadeouts None expected None expected None expected
10.7cm/SSN 72/8 72/8 72/8
COMMENT: Solar activity was very low on UT day 08 June. Very
low to low levels of solar activity are expected for the next
three days, 09 to 11 June. AR 2765(S23E06) appears to be decaying
while the associated filament appears stable. No returning regions
expected. No Earthward directed CMEs were observed in the available
coronagraph images. A far-side CME was observed in STEREO A images
at 1954 UT. The solar wind speed ranged was 420 to 500 km/s peaking
at 0716 UT, wind speed is currently around 430 km/s. The total
IMF (Bt) reached 6 nT and the north-south IMF component, Bz,
range was -5 to 3 nT. Solar wind conditions are expected to remain
near nominal levels 09 to 11 June.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 08 Jun: Quiet
Estimated Indices 08 Jun : A K
Australian Region 1 11001000
Cocos Island 0 11000000
Darwin 1 11001000
Townsville 2 12101110
Learmonth 1 11001000
Alice Springs 1 11001000
Gingin 1 11001110
Canberra 1 11001000
Hobart 1 11001110
Estimated Antarctic Regional K Indices 08 Jun :
Macquarie Island 0 10001000
Casey 3 21201110
Mawson 7 23322210
Observed Regional daily pc3 Indices 08 Jun :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 13 (Quiet)
Canberra 13 (Quiet)
Melbourne NA
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 Jun : A
Fredericksburg 5
Planetary 5
Observed AFr/Ap Indices 07 Jun : A K
Fredericksburg 10
Planetary 10 1101 1253
2B. MAGNETIC FORECAST
Date Ap Conditions
09 Jun 7 Quiet
10 Jun 7 Quiet
11 Jun 7 Quiet
COMMENT: Geomagnetic conditions in the Australian region were
quiet on UT day 08 June. The Antarctic region observed quiet
to unsettled to conditions. Quiet conditions are expected 09
to 11 June.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
08 Jun Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
09 Jun Normal Normal Normal
10 Jun Normal Normal Normal
11 Jun Normal Normal Normal
COMMENT: Mostly normal HF conditions are expected for the next
three UT days, 09 to 11 June.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
08 Jun 5
Observed Australian Regional MUFs
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 35% during local night.
Enhanced by 25% after local dawn.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 30% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Monthly T index:
Month T index
May 1
Jun -12
Jul -13
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
09 Jun 5 Near to 15% above predicted monthly values
10 Jun 5 Near to 15% above predicted monthly values
11 Jun 0 Near predicted monthly values
COMMENT: MUFs were near predicted monthly values to enhanced
on 08 June. Sporadic E was observed in the early evening at some
sites. Night spread F observed at Norfolk Is., Brisbane and Learmonth.
MUFs in the Australian region are expected to be mostly near
predicted monthly values for the next three days, 09 to 11 June.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 07 Jun
Daily Proton Fluence >1 MeV: 6.1E+04
Daily Proton Fluence >10 MeV: 4.7E+04
Daily Electron Fluence >2 MeV: 1.10E+06 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A3.5
DSCOVR Satellite Solar Wind Day Averaged Data for 07 Jun
Speed: 337 km/sec Density: 12.8 p/cc Temp: 36000 K Bz: 0 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
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Space Weather Services email: asfc at bom.gov.au
Bureau of Meteorology
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