[Ips-dsgr] IPS Daily Report - 09 February 13 issued 2347 UT on 09 Feb 2013
rwc
rwc at ips.gov.au
Sun Feb 10 10:47:40 EST 2013
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/09 FEBRUARY 2013 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 09 FEBRUARY AND FORECAST FOR 10 FEBRUARY - 12 FEBRUARY
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 09 Feb: Low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 09 Feb: 108/58
1B. SOLAR FORECAST
10 Feb 11 Feb 12 Feb
Activity Low Low Low
Fadeouts None expected None expected None expected
10.7cm/SSN 110/60 105/54 105/54
COMMENT: Only one long duration C2.4 flare, peaking at 0640 UT.
SDO imagery showed a filament erupted in the vicinity of region
1670( N19E12) around this time. LASCO and STEREO images show
a CME at 0648UT, appears to be associated with the filament eruption.
This CME may be weakly geo-effective. There has been some increase
in the area and spot count of region 1670(Dao class) while other
regions appear stable or declining. Predominantly C-class flare
activity is expected over the forecast period. Solar wind speed
declined slightly from 450 km/s over the UT day. The IMF Bz component
was mostly neutral (+/-2nT). Solar wind is expected to continue
decreasing over the next 2 days(10-11 Feb). CME observed on 09
Feb, may impact Earth on day 3(12 Feb).
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 09 Feb: Quiet
Estimated Indices 09 Feb : A K
Australian Region 4 22210012
Darwin 5 22221112
Townsville 5 22211122
Learmonth 5 22221112
Alice Springs 3 21220011
Norfolk Island 3 22100012
Gingin 4 2211111-
Camden 2 21110011
Canberra 2 12110001
Hobart 3 12210011
Estimated Antarctic Regional K Indices 09 Feb :
Macquarie Island 0 01100000
Casey 11 3433101-
Mawson 10 33321123
Observed Regional daily pc3 Indices 09 Feb :
Darwin 6 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 9 (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 International Center for Space Weather
Science and Education, Japan.
Estimated AFr/Ap Indices 09 Feb : A
Fredericksburg 4
Planetary 4
Observed AFr/Ap Indices 08 Feb : A K
Fredericksburg 8
Planetary 8 2232 3211
2B. MAGNETIC FORECAST
Date Ap Conditions
10 Feb 5 Quiet
11 Feb 5 Quiet
12 Feb 10 Quiet to Unsettled. Isolated active levels possible
at high latitudes.
COMMENT: Geomagnetic activity has been Quiet and should remain
mostly Quiet for the next two days. CME in association with a
filament eruption observed on 09 Feb may have an Earth-directed
component. Unsettled and possible Active geomagnetic conditions
could result on Feb 12.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
09 Feb Normal Normal-fair Normal-fair
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
10 Feb Normal Normal Normal
11 Feb Normal Normal Normal
12 Feb Normal Normal-fair Normal-fair
COMMENT: HF conditions are expected to be mostly normal for the
next 24 hours.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
09 Feb 73
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 20% during local night.
Northern Australian Region:
Near predicted monthly values during local day.
Depressed by 15% during local night.
Southern Australian and New Zealand Region:
Depressed by 20% during local day.
Near predicted monthly values during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Predicted Monthly T index for February: 79
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
10 Feb 75 Near predicted monthly values
11 Feb 75 Near predicted monthly values
12 Feb 70 Near predicted monthly values
COMMENT: HF conditions were mostly normal during the last 24
hours. Expect this trend to continue for the next 48 hours. Mildly
degraded conditions may be observed at times for 12 Feb.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 08 Feb
Daily Proton Fluence >1 MeV: 2.3E+06
Daily Proton Fluence >10 MeV: 2.2E+04
Daily Electron Fluence >2 MeV: 9.20E+05 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B1.7
ACE Satellite Solar Wind Day Averaged Data for 08 Feb
Speed: 432 km/sec Density: 1.8 p/cc Temp: 95000 K Bz: -1 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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