[Ips-dsgr] IPS Daily Report - 01 December 01
rwc
rwc at ips.gov.au
Sun Dec 2 11:03:35 EST 2001
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 01/2330Z DECEMBER 2001 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 01 DECEMBER AND FORECAST FOR 02 DECEMBER - 04 DECEMBER
STATUS INDICATORS SOL:**RED** MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 01 Dec: High
Flares Max Fadeout Freq. Sectors
M4.8 1555UT possible lower South American/
Atlantic
M1/SF 1744UT possible lower South American/
Atlantic
Observed 10.7 cm flux/Equivalent Sunspot Number for 01 Dec: 221/171
1B. SOLAR FORECAST
02 Dec 03 Dec 04 Dec
Activity Moderate to high Moderate to high Moderate to high
Fadeouts Probable Probable Probable
10.7cm/SSN 225/175 220/170 220/170
Previously M-flare(s) producing region 9690 is due for return
to the south-east limb around 2 Dec.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 01 Dec: Quiet to Unsettled
Estimated Indices 01 Dec : A K
Australian Region 12 3233 3313
Darwin 9 2123 3313
Learmonth 10 3123 3313
Canberra 10 2233 3223
Hobart 9 2233 2223
Casey(Ant) 13 3343 320-
Davis(Ant) 15 3343 3322
Observed Regional daily pc3 Indices 01 DEC :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Canberra 18 (Quiet)
Hobart 26 (Quiet to unsettled)
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 01 Dec : A
Fredericksburg 10
Planetary 10
Observed AFr/Ap Indices 30 Nov : A K
Fredericksburg 2
Planetary 3 1001 1122
2B. MAGNETIC FORECAST
Date Ap Conditions
02 Dec 15 Unsettled to Active
03 Dec 12 Unsettled
04 Dec 15 Unsettled to Active
COMMENT: IPS Geomagnetic Warning 47 was issued on 30 November
and is current for interval 1-2 December. The weak shock observed
in the solar wind data at 1730UT on 30 November is now considered
to be the CME anticipated for early 1 December. The CME did not
appear to be largely earthward directed and hence had little
effect on the geomagnetic field. Other CMEs associated with recent
flare activity, do not appear to be largely Earthward directed.
A coronal hole solar wind stream is expected to produce active
periods on 4-5 December.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
01 Dec Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
02 Dec Normal Normal Normal-Fair
03 Dec Normal Normal Normal-Fair
04 Dec Normal Normal Normal-Fair
COMMENT: Elevated geomagnetic activity from the CME due on 1
December has not eventuated and hence HF conditions have remained
mostly normal to enhanced.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
01 Dec 188
Observed Australian Regional MUFs
Normal to enhanced at all stations.
Predicted Monthly T index for December: 107
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
02 Dec 160 Near predicted monthly values
03 Dec 170 Near predicted monthly values
04 Dec 170 Near predicted monthly values
COMMENT: IPS HF Communications Warning 79 was issued on 30 November
and is current for interval 1-3 December (SWFs) . Elevated geomagnetic
activity from the CME due on 1 December has not eventuated and
hence HF conditions have remained mostly normal to enhanced.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 30 Nov
Daily Proton Fluence >1 MeV: 3.4E+06
Daily Proton Fluence >10 MeV: 1.1E+05
Daily Electron Fluence >2 MeV: 6.90E+05 (normal)
X-ray background: C1.4
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 30 Nov
Speed: 361 km/sec Density: 4.2 p/cc Temp: 34900 K Bz: 3 nT
(Courtesy Space Environment 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/asfc
Haymarket NSW 1240 AUSTRALIA | FTP: ftp://ftp.ips.gov.au/users/asfc/
tel: +61 2 9213 8010 | fax: +61 2 9213 8060
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