[Ips-dsgr] SWS Daily Report - 03 June 20 issued 2331 UT on 03 Jun 2020
Regional Warning Centre
rwc at ips.gov.au
Thu Jun 4 09:31:18 EST 2020
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/03 JUNE 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 03 JUNE AND FORECAST FOR 04 JUNE - 06 JUNE
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 03 Jun: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 03 Jun: 70/5
1B. SOLAR FORECAST
04 Jun 05 Jun 06 Jun
Activity Very low to low Very low to low Very low to low
Fadeouts None expected None expected None expected
10.7cm/SSN 70/5 70/5 70/5
COMMENT: Solar activity was very low on UT day 03 June. There
are two numbered active regions on the visible disc, AR 2764
and AR 2765. Currently AR 2764 has no sunspots. No Earthward
directed CMEs were observed in the available coronagraph images.
Very low levels of solar activity with a chance of isolated C-class
flares are expected for the next three UT days, 04-06 June. During
UT day 03 June, the solar wind speed varied in the range 310-360
km/s. The total IMF (Bt) varied between 1 nT and 5 nT, and the
north-south IMF component (Bz) varied mostly in the range -4/+3
nT. The solar wind speed is expected to stay mostly near its
background level during UT days 04-06 June, with possible moderate
enhancements.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 03 Jun: Quiet
Estimated Indices 03 Jun : A K
Australian Region 1 01002000
Cocos Island 0 00000000
Darwin 1 11001001
Townsville 1 01002001
Learmonth 0 00002000
Alice Springs 1 010-----
Gingin 1 01002010
Canberra 0 00002000
Hobart 1 01012000
Estimated Antarctic Regional K Indices 03 Jun :
Macquarie Island 1 00012000
Casey 3 12111110
Mawson 9 33111024
Observed Regional daily pc3 Indices 03 Jun :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 0 (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 03 Jun : A
Fredericksburg 4
Planetary 4
Observed AFr/Ap Indices 02 Jun : A K
Fredericksburg 7
Planetary 7 2321 1222
2B. MAGNETIC FORECAST
Date Ap Conditions
04 Jun 7 Quiet
05 Jun 7 Quiet
06 Jun 7 Quiet
COMMENT: Geomagnetic conditions in the Australian region were
quiet on UT day 03 June. The Antarctic region observed mostly
quiet to unsettled levels. Global geomagnetic activity is expected
to be mostly quiet with a chance of isolated unsettled periods
for UT days 04-06 June.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
03 Jun Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
04 Jun Normal Normal Normal-fair
05 Jun Normal Normal Normal-fair
06 Jun Normal Normal Normal-fair
COMMENT: During UT day 03 June, MUFs were mostly near predicted
monthly values with mild enhancements in the Southern Hemisphere
and varied between the predicted monthly values and moderately
depressed levels in the Northern Hemisphere. For the next three
UT days, 04-06 June, similar HF propagation conditions are expected.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
03 Jun 0
Observed Australian Regional MUFs
Cocos Island Region:
Near predicted monthly values during local day.
Enhanced by 25% during local night.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 40% during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 15% 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
04 Jun 0 Near predicted monthly values
05 Jun 0 Near predicted monthly values
06 Jun 0 Near predicted monthly values
COMMENT: In the Australian region on UT day 03 June MUFs were
mostly near predicted monthly values during local day and mildly
enhanced during local night. Sporadic E was observed over some
sites. MUFs in the Australian region are expected to stay mostly
at normal levels for the next three UT days, 04-06 June. Mild
enhancements are possible during 04 June.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 02 Jun
Daily Proton Fluence >1 MeV: 5.3E+04
Daily Proton Fluence >10 MeV: 4.5E+04
Daily Electron Fluence >2 MeV: 1.40E+06 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A4.5
DSCOVR Satellite Solar Wind Day Averaged Data for 02 Jun
Speed: 347 km/sec Density: 8.6 p/cc Temp: 48700 K Bz: -2 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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