[Ips-dsgr] IPS Daily Report - 19 November 04
rwc
rwc at ips.gov.au
Sat Nov 20 10:00:37 EST 2004
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 19/2330Z NOVEMBER 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 19 NOVEMBER AND FORECAST FOR 20 NOVEMBER - 22 NOVEMBER
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 19 Nov: Low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 19 Nov: 102/50
1B. SOLAR FORECAST
20 Nov 21 Nov 22 Nov
Activity Low to moderate Low to moderate Low to moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 100/48 100/48 105/54
COMMENT: Solar activity has been low again over the past 24 hours.
Solar wind conditions also calm, with an increasing trend toward
the end of the UT day. The north-south component of the interplanetary
magnetic field was mostly neutral, a trend southward is visible
at the time of issue of this report. This is probably due to
a coronal hole, now in the western solar hemisphere (SOHO EIT284).
None of the new regions that have recently rotated onto the solar
disk have produced any significant activity.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 19 Nov: Quiet to Unsettled
Estimated Indices 19 Nov : A K
Australian Region 7 1131 1232
Darwin 11 1-41 124-
Townsville 6 2121 1232
Learmonth 5 0121 1232
Culgoora 4 1121 1222
Canberra 4 0220 1222
Hobart 4 1220 1121
Casey(Ant) 11 3-42 0233
Observed Regional daily pc3 Indices 19 NOV :
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Culgoora 2 (Quiet)
Canberra 2 (Quiet)
Hobart 18 (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 19 Nov : A
Fredericksburg 4
Planetary 3
Observed AFr/Ap Indices 18 Nov : A K
Fredericksburg 4
Planetary 3 0001 1111
2B. MAGNETIC FORECAST
Date Ap Conditions
20 Nov 6 Quiet
21 Nov 10 Quiet to Unsettled
22 Nov 12 Unsettled
COMMENT: Generally quiet conditons. Very mild recurrent pattern
of unsettled activity for 21-22 Nov.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
19 Nov Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
20 Nov Normal Normal Normal
21 Nov Normal Normal Normal-Fair
22 Nov Normal Normal Normal-Fair
COMMENT: HF conditions are expected to remain mostly normal on
most locations during the next three days. Minor degradation
possible at high latitudes.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
19 Nov 65
Observed Australian Regional MUFs
Equatorial PNG Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 15% during local night.
Southern Australian and New Zealand Region:
Near predicted monthly values during local day,
Enhanced by 15% during local night.
Antarctic Region (Casey/Scott Base):
Near predicted monthly values over the UT day.
Predicted Monthly T index for November: 35
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
20 Nov 55 about 15% above predicted monthly values
21 Nov 55 about 15% above predicted monthly values
22 Nov 55 about 15% above predicted monthly values
COMMENT: Good HF conditions expected.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 18 Nov
Daily Proton Fluence >1 MeV: 3.7E+06
Daily Proton Fluence >10 MeV: 2.0E+04
Daily Electron Fluence >2 MeV: 2.20E+08 (moderate fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability:16%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: B2.0
ACE Satellite Solar Wind Day Averaged Data for 18 Nov
Speed: 369 km/sec Density: 0.9 p/cc Temp: 64200 K Bz: 1 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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