[Ips-dsgr] SWS Daily Report - 06 April 20 issued 2331 UT on 06 Apr 2020
Regional Warning Centre
rwc at ips.gov.au
Tue Apr 7 09:31:25 EST 2020
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/06 APRIL 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 06 APRIL AND FORECAST FOR 07 APRIL - 09 APRIL
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity 06 Apr: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 06 Apr: 70/5
1B. SOLAR FORECAST
07 Apr 08 Apr 09 Apr
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
10.7cm/SSN 70/5 70/5 70/5
COMMENT: Solar activity was Very Low for 06 Apr. There is currently
one plage without spot on the visible disk, 2759 (N28,W15), produced
few low level B-class events. Very Low levels of solar activity
are expected for the next three days,07-09 Apr. No Earth-directed
CMEs were observed in the available coronagraph imagery. During
the last 24 hours, the solar wind speed was near nominal levels,
under 380 km/s. The total IMF (Bt) varied around 3 nT. The north-south
component of IMF, Bz, varied mostly between +/2 nT. The solar
wind speed is expected to be mostly near its background levels
for the next three days, 07-09 Apr, although some slight enhancements
may be observed due to weak isolated coronal holes.
-----------------------------------------------------------
2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 06 Apr: Quiet
Estimated Indices 06 Apr : A K
Australian Region 0 10001000
Darwin 0 10001000
Townsville 1 11001000
Learmonth 0 20000000
Alice Springs 0 10001000
Gingin 0 10001000
Canberra 0 00000000
Hobart 1 00111000
Estimated Antarctic Regional K Indices 06 Apr :
Macquarie Island 0 00101000
Casey 4 23212000
Mawson 3 32111000
Observed Regional daily pc3 Indices 06 Apr :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 0 (Quiet)
Melbourne NA
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 06 Apr : A
Fredericksburg 4
Planetary 5
Observed AFr/Ap Indices 05 Apr : A K
Fredericksburg 4
Planetary 5 2 1 1 1 2 2 1 1
2B. MAGNETIC FORECAST
Date Ap Conditions
07 Apr 5 Quiet
08 Apr 8 Quiet to Unsettled
09 Apr 8 Quiet to Unsettled
COMMENT: Quiet geomagnetic conditions were observed for the Australian
region on UT day 06 Apr. The Antarctic sites observed Quiet to
Unsettled levels. Global geomagnetic activity is expected to
be mostly at Quiet levels for the next three days, 07-09 Apr
and a times may reach Unsettled levels due to weak coronal hole
effects.
-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
06 Apr Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
07 Apr Normal Normal Normal
08 Apr Normal Normal Normal
09 Apr Normal Normal Normal
COMMENT: Mostly normal HF propagation conditions are expected
for the next three days, 07-09 Apr.
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
06 Apr -0
Observed Australian Regional MUFs
Cocos Island Region:
Enhanced by 20% during local day.
Enhanced by 80% during local night.
Niue Island Region:
Near predicted monthly values.
Northern Australian Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 20% during local night.
Enhanced by 20% after local dawn.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Near predicted monthly values over the UT day.
Monthly T index:
Month T index
Mar 1
Apr -14
May -14
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
07 Apr 0 Near predicted monthly values
08 Apr 0 Near predicted monthly values
09 Apr 0 Near predicted monthly values
COMMENT: Maximum usable frequencies (MUFs) were near predicted
monthly values to slightly enhanced for the Australian region
on 06 Apr. Moderate MUFs enhancements observed at Cocos Island
region local night. Sporadic-E occurrences were seen over some
sites. Similar levels of ionospheric support is expected for
the next three days, 07-09 Apr.
-----------------------------------------------------------
5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 05 Apr
Daily Proton Fluence >1 MeV: 5.9e+04
Daily Proton Fluence >10 MeV: 4.6e+04
Daily Electron Fluence >2 MeV: 1.10e+07
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: A1.1
DSCOVR Satellite Solar Wind Day Averaged Data for 05 Apr
Speed: 413 km/sec Density: 3.8 p/cc Temp: 53600 K Bz: 0 nT
(Courtesy Space Weather Prediction Center, Boulder USA)
-----------------------------------------------------------
Space Weather Services email: asfc at bom.gov.au
Bureau of Meteorology
PO Box 1386 WWW: http://www.sws.bom.gov.au
Haymarket NSW 1240 AUSTRALIA FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010 fax: +61 2 9213 8060
IMPORTANT: This e-mail, including any attachments, may contain,
confidential or copyright information. The views expressed in
this message are those of the individual sender, unless
specifically stated to be the views of SWS. If you are not
the intended recipient, please contact the sender immediately
and delete all copies of this e-mail and attachments.
To unsubscribe from an IPS mail list either send an email to
"MAIL_LIST"-leave at ips.gov.au or go to
http://www.sws.bom.gov.au/mailman/listinfo/"MAIL_LIST".
Information about training can be obtained from
http://www.sws.bom.gov.au/mailman/listinfo/ips-training.
General information is available from
http://www.sws.bom.gov.au/mailman/listinfo/ips-info.
More information about the ips-dsgr
mailing list