[Ips-dsgr] SWS Daily Report - 24 June 17 issued 2330 UT on 24 Jun 2017 [SEC=UNCLASSIFIED]
Regional Warning Centre
rwc at ips.gov.au
Sun Jun 25 09:30:21 EST 2017
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/24 JUNE 2017 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 24 JUNE AND FORECAST FOR 25 JUNE - 27 JUNE
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 24 Jun: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 24 Jun: 74/11
1B. SOLAR FORECAST
25 Jun 26 Jun 27 Jun
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
10.7cm/SSN 73/9 72/8 72/8
COMMENT: Solar activity was Very Low for the UT day, 24 June.
Very Low solar activity is expected for the next 3 days with
a slight chance of C-class flares. No Earth-directed CMEs were
observed in the available LASCO imagery. The solar wind speed
varied between approximately 360 to 430 km/s over the last 24
hours. It is currently around 400 km/s. The B total interplanetary
magnetic field decreased over the last 24 hours, starting around
8 nT and currently around 6 nT. The Bz component varied between
-6 to 6 nT. The minor enhancements in the solar wind due to coronal
hole effects are expected to wane over the next three days.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 24 Jun: Quiet to Unsettled
Estimated Indices 24 Jun : A K
Australian Region 7 22232221
Cocos Island 4 11122121
Darwin 8 22232222
Townsville 7 22232221
Learmonth 8 21232321
Alice Springs 7 12232221
Norfolk Island 6 22222221
Culgoora 7 21232221
Gingin 6 21122231
Camden 6 12222221
Canberra 3 11122110
Launceston 7 22232221
Hobart 5 11222221
Estimated Antarctic Regional K Indices 24 Jun :
Macquarie Island 4 00232210
Casey 8 32231222
Mawson 19 32333345
Observed Regional daily pc3 Indices 24 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 24 Jun : A
Fredericksburg 9
Planetary 12
Observed AFr/Ap Indices 23 Jun : A K
Fredericksburg 6
Planetary 6 2011 1223
2B. MAGNETIC FORECAST
Date Ap Conditions
25 Jun 10 Quiet to Unsettled
26 Jun 8 Quiet to Unsettled
27 Jun 5 Quiet
COMMENT: Geomagnetic activity was at Quiet to Unsettled levels
across the Australian region. Quiet to Unsettled conditions are
possible over the next two days (25-26 June) due to the waning
effects of the northern high latitude (>20N) positive polarity
coronal hole, then Quiet conditions for 27 June.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
24 Jun Normal Normal Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
25 Jun Normal Normal Normal-fair
26 Jun Normal Normal Normal-fair
27 Jun Normal Normal Normal
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
24 Jun 8
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.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Monthly T index:
Month T index
May 10
Jun 10
Jul 9
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
25 Jun 0 Near predicted monthly values/depressed 10 to
20%
26 Jun 0 Near predicted monthly values/depressed 10 to
20%
27 Jun 10 Near predicted monthly values
COMMENT: Mostly near predicted monthly MUFs were observed over
the Australian region on UT day, 24 June. Mostly near predicted
MUFs, with periods of minor depressions in MUFs, are expected
on 25-26 June due to the current Quiet to Unsettled levels of
geomagnetic activity.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 23 Jun
Daily Proton Fluence >1 MeV: 1.6E+07
Daily Proton Fluence >10 MeV: 1.5E+04
Daily Electron Fluence >2 MeV: 1.90E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 3%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A5.1
DSCOVR Satellite Solar Wind Day Averaged Data for 23 Jun
Speed: 338 km/sec Density: 7.7 p/cc Temp: 27100 K Bz: 1 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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