[Ips-dsgr] IPS Daily Report - 28 April 10
rwc
rwc at ips.gov.au
Thu Apr 29 09:32:57 EST 2010
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 28/2330Z APRIL 2010 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 28 APRIL AND FORECAST FOR 29 APRIL - 01 MAY
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 28 Apr: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 28 Apr: 76/14
1B. SOLAR FORECAST
29 Apr 30 Apr 01 May
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
10.7cm/SSN 76/14 76/14 76/14
COMMENT: Solar activity was Very Low over the last 24 hours.
Solar wind speed ranged between 300km/s-360km/s over the UT day.
Bz ranged between +/-5nT. Solar activity is expected to be Very
Low for the next 3 days.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 28 Apr: Quiet
Estimated Indices 28 Apr : A K
Australian Region 2 12111001
Darwin 2 12200001
Townsville 4 22211111
Learmonth 3 22111001
Canberra 0 00000000
Hobart 1 01101001
Casey(Ant) 3 12210111
Observed Regional daily pc3 Indices 28 Apr :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice_Springs 0 (Quiet)
Gnangara 0 (Quiet)
Canberra 0 (Quiet)
Hobart 0 (Quiet)
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 Space Environment Research Center, Japan.
Estimated AFr/Ap Indices 28 Apr : A
Fredericksburg 4
Planetary 4
Observed AFr/Ap Indices 27 Apr : A K
Fredericksburg 3
Planetary 4 2101 1212
2B. MAGNETIC FORECAST
Date Ap Conditions
29 Apr 5 Quiet
30 Apr 5 Quiet
01 May 5 Quiet
COMMENT: Geomagnetic activity was Quiet over the last 24 hours.
Mostly Quiet conditions expected for the next 3 days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
28 Apr Normal-fair Normal Normal-fair
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
29 Apr Normal-fair Normal Normal-fair
30 Apr Normal-fair Normal Normal-fair
01 May Normal-fair Normal Normal-fair
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
28 Apr 13
Observed Australian Regional MUFs
Cocos Island Region:
Mostly near predicted monthly values,
Niue Island Region:
Depressed by 25% during local day,
Depressed by 25% during local night.
Northern Australian Region:
Depressed by 15% during local day,
Near predicted monthly values during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Predicted Monthly T index for April: 20
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
29 Apr 15 near predicted monthly values
30 Apr 15 near predicted monthly values
01 May 15 near predicted monthly values
COMMENT: Mostly normal HF conditions for all regions over the
last 24 hours with depressed MUFs ~20% during local day for
Equatorial/Northern AUS regions. Continued sporadic-E conditions
observed for Northern AUS stations during local day and periods
of weak ionospheric support for Antarctic regions. Similar HF
conditions are expected for the next 3 days.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 27 Apr
Daily Proton Fluence >1 MeV: 3.5E+05
Daily Proton Fluence >10 MeV: 1.5E+04
Daily Electron Fluence >2 MeV: 2.70E+06 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A3.1
ACE Satellite Solar Wind Day Averaged Data for 27 Apr
Speed: 363 km/sec Density: 1.4 p/cc Temp: 48600 K Bz: 0 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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IPS Radio and Space Services email: asfc at ips.gov.au
PO Box 1386 WWW: http://www.ips.gov.au
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