[Ips-dsgr] IPS Daily Report - 17 November 05
rwc
rwc at ips.gov.au
Fri Nov 18 10:29:45 EST 2005
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 17/2330Z NOVEMBER 2005 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 17 NOVEMBER AND FORECAST FOR 18 NOVEMBER - 20 NOVEMBER
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 17 Nov: Low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 17 Nov: 101/49
1B. SOLAR FORECAST
18 Nov 19 Nov 20 Nov
Activity Low to moderate Low to moderate Low to moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 100/48 100/48 100/48
COMMENT: Active Region 822 remains the only significant feature
on the visible solar disk. Flare activity over the UT day was
limited to B-class, with a minor C-class event late in the UT
day. The feint CME observed on 16 Nov in association with an
erupting filament in the NW quadrant expanded into a partial-halo
feature, which may have a weak earth-directed component. Further
C- to M-class activity is possible from AR822.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 17 Nov: Quiet
Estimated Indices 17 Nov : A K
Australian Region 2 1121 0001
Darwin 2 2121 0001
Learmonth 2 1121 0001
Culgoora 2 1121 0001
Canberra 1 0121 0000
Hobart 2 1121 0000
Casey(Ant) 6 3-32 1001
Observed Regional daily pc3 Indices 17 Nov :
Townsville NA
Learmonth 0 (Quiet)
Culgoora 4 (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.
Estimated AFr/Ap Indices 17 Nov : A
Fredericksburg 5
Planetary 5
Observed AFr/Ap Indices 16 Nov : A K
Fredericksburg 1
Planetary 3 0200 1111
2B. MAGNETIC FORECAST
Date Ap Conditions
18 Nov 4 Quiet
19 Nov 4 Quiet
20 Nov 8 Quiet to Unsettled
COMMENT: Solar wind parameters remain at nominal levels. Quiet
geomagnetic conditions observed at all latitudes. Expect continuing
mostly quiet conditions next two days. Minor disturbances possible
mainly at high latitudes on day three.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
17 Nov Normal-fair Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
18 Nov Normal Normal Normal
19 Nov Normal Normal Normal
20 Nov Normal Normal Normal-Fair
COMMENT: Variable overnight depressions observed at low latitudes,
recovering post-dawn. Otherwise HF conditiions mostly normal.
Expect mostly normal conditions next three days.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
17 Nov 17
Observed Australian Regional MUFs
Equatorial PNG Region:
Near predicted monthly values during local day,
Depressed by 25% during local night.
Depressed by 40% after local dawn.
Northern Australian Region:
Mostly near predicted monthly values,
Southern Australian and New Zealand Region:
Near predicted monthly values.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values over the UT day.
Predicted Monthly T index for November: 20
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
18 Nov 15 Near predicted monthly values
19 Nov 20 Near predicted monthly values
20 Nov 20 Near predicted monthly values
COMMENT: Variable depressions observed PNG region during local
night, otherwise conditions mostly normal. Expect mostly normal
HF conditions next three days. Possible minor disturbances Antarctic
region on day three.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 16 Nov
Daily Proton Fluence >1 MeV: 2.2E+05
Daily Proton Fluence >10 MeV: 1.5E+04
Daily Electron Fluence >2 MeV: 3.40E+07 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 5%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B1.0
ACE Satellite Solar Wind Day Averaged Data for 16 Nov
Speed: 358 km/sec Density: 1.2 p/cc Temp: 85600 K Bz: -1 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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PO Box 1386 WWW: http://www.ips.gov.au
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