[Ips-dsgr] IPS Daily Report - 24 March 04
rwc
rwc at ips.gov.au
Thu Mar 25 11:19:46 EST 2004
SUBJ: IPS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 24/2330Z MARCH 2004 BY IPS RADIO AND SPACE SERVICES
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 24 MARCH AND FORECAST FOR 25 MARCH - 27 MARCH
STATUS INDICATORS SOL:** YELLOW ** MAG:GREEN ION: GREEN
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1A. SOLAR SUMMARY
Activity 24 Mar: Low
Flares: M1.5 observed at 2329UT from N15E77.
Observed 10.7 cm flux/Equivalent Sunspot Number for 24 Mar: 120/72
1B. SOLAR FORECAST
25 Mar 26 Mar 27 Mar
Activity Low to moderate Low to moderate Low to moderate
Fadeouts Possible Possible Possible
10.7cm/SSN 120/72 120/72 115/66
COMMENT: Further M-class flare activity is possible from a region
rotating around on the north-east limb.
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2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 24 Mar: Quiet
Estimated Indices 24 Mar : A K
Australian Region 2 2200 0002
Darwin 2 2201 0002
Townsville 1 1201 0002
Learmonth 2 2200 0002
Culgoora 0 1100 0002
Canberra 1 1200 0003
Hobart 1 1200 0002
Casey(Ant) 7 3331 0011
Observed Regional daily pc3 Indices 24 MAR :
Townsville 2 (Quiet)
Learmonth 0 (Quiet)
Culgoora 0 (Quiet)
Canberra 5 (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 24 Mar : A
Fredericksburg 5
Planetary 10
Observed AFr/Ap Indices 23 Mar : A K
Fredericksburg 5
Planetary 8 3322 2231
2B. MAGNETIC FORECAST
Date Ap Conditions
25 Mar 6 Quiet
26 Mar 8 Quiet to Unsettled
27 Mar 8 Quiet to Unsettled
COMMENT: Mostly quiet conditions are expected for the next few
days.
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3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
24 Mar Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
25 Mar Normal Normal Normal
26 Mar Normal Normal Normal-Fair
27 Mar Normal Normal Normal-Fair
COMMENT: Generally good HF conditions expected for the next few
days.
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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
24 Mar 80
Observed Australian Regional MUFs
Equatorial PNG Region:
Near predicted monthly values during local day,
Enhanced by 20% during local night.
Northern Australian Region:
Near predicted monthly values during local day,
Enhanced by 25% during local night.
Southern Australian and New Zealand Region:
Enhanced by 15% during local day,
Enhanced by 20% during local night.
Enhanced by 25% after local dawn.
Antarctic Region (Casey/Scott Base):
Mostly normal to enhanced.
Predicted Monthly T index for March: 49
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
25 Mar 70 10 to 20% above predicted monthly values
26 Mar 70 10 to 20% above predicted monthly values
27 Mar 70 10 to 20% above predicted monthly values
COMMENT: Generally good HF conditions observed, and expected
next three days.
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5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 23 Mar
Daily Proton Fluence >1 MeV: 4.3E+05
Daily Proton Fluence >10 MeV: 1.2E+04
Daily Electron Fluence >2 MeV: 2.90E+07 (normal)
X-ray background: B2.1
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
ACE Satellite Solar Wind Day Averaged Data for 23 Mar
Speed: 394 km/sec Density: 2.3 p/cc Temp: 74600 K Bz: 0 nT
(Courtesy Space Environment Center, Boulder USA)
ACE data can be incorrect during strong proton events.
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