[Ips-dsgr] SWS Daily Report - 21 June 20 issued 2331 UT on 21 Jun 2020
Regional Warning Centre
rwc at ips.gov.au
Mon Jun 22 09:31:24 EST 2020
SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/21 JUNE 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 21 JUNE AND FORECAST FOR 22 JUNE - 24 JUNE
STATUS INDICATORS SOL:GREEN MAG:GREEN ION: GREEN
-----------------------------------------------------------
1A. SOLAR SUMMARY
Activity 21 Jun: Very low
Flares: none.
Observed 10.7 cm flux/Equivalent Sunspot Number for 21 Jun: 68/2
1B. SOLAR FORECAST
22 Jun 23 Jun 24 Jun
Activity Very low Very low Very low
Fadeouts None expected None expected None expected
10.7cm/SSN 68/2 68/2 68/2
COMMENT: Solar activity was very low on UT day 21 June. Very
low solar activity is expected for the next three UT days, 22-24
June. There are currently no numbered active regions on the solar
disk. No returning regions are expected. No Earthward directed
CMEs were observed in the available coronagraph images. During
UT day 21 June, the solar wind speed varied in the range 300
km/s to 335 km/s, the total IMF (Bt) varied between 1 and 5 nT
and the north-south IMF component (Bz) varied mostly between
-3 nT and +4 nT. The solar wind particle density varied between
3 and 10 ppcc during this time. Solar wind conditions are expected
to remain mostly at background levels on UT days 22 to 24 June.
-----------------------------------------------------------
2A. MAGNETIC SUMMARY
Geomagnetic field for Australian Region 21 Jun: Quiet
Estimated Indices 21 Jun : A K
Australian Region 1 11011100
Cocos Island 2 11111100
Darwin 1 11011001
Townsville 2 11122000
Learmonth 2 11021100
Alice Springs 1 11011000
Gingin 1 10010200
Canberra 1 00111000
Hobart 1 11011100
Estimated Antarctic Regional K Indices 21 Jun :
Macquarie Island 1 00021000
Casey 2 11010220
Mawson 4 11100132
Observed Regional daily pc3 Indices 21 Jun :
Darwin 0 (Quiet)
Townsville 0 (Quiet)
Learmonth 0 (Quiet)
Alice Springs 0 (Quiet)
Gingin 0 (Quiet)
Canberra 2 (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 21 Jun : A
Fredericksburg 4
Planetary 4
Observed AFr/Ap Indices 20 Jun : A K
Fredericksburg 7
Planetary 6 2231 0112
2B. MAGNETIC FORECAST
Date Ap Conditions
22 Jun 5 Quiet
23 Jun 5 Quiet
24 Jun 5 Quiet
COMMENT: On UT day 21 June, geomagnetic conditions were quiet
in the Australian region and mainly quiet in the Antarctic region,
with one isolated unsettled period recorded on one Antarctic
station. Global geomagnetic activity is expected to be at quiet
levels for UT days 22 to 24 June.
-----------------------------------------------------------
3A. GLOBAL HF PROPAGATION SUMMARY
Latitude Band
Date Low Middle High
21 Jun Normal Normal Normal
PCA Event : No event.
3B. GLOBAL HF PROPAGATION FORECAST
Latitude Band
Date Low Middle High
22 Jun Normal Normal Normal
23 Jun Normal Normal Normal
24 Jun Normal Normal Normal
COMMENT: MUFs were near predicted monthly values with minor to
mild enhancements on UT day 21 June. Sporadic E was observed
over some sites. MUFs are expected to be mostly near monthly
predicted to mildly enhanced levels for the next three UT days,
22 to 24 June.
-----------------------------------------------------------
4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY
Date T index
21 Jun -6
Observed Australian Regional MUFs
Cocos Island Region:
Near predicted monthly values.
Niue Island Region:
Near predicted monthly values during local day.
Enhanced by 30% during local night.
Northern Australian Region:
Near predicted monthly values.
Southern Australian Region:
Near predicted monthly values during local day.
Enhanced by 15% during local night.
Antarctic Region (Casey/Scott Base/Davis/Mawson):
Enhanced by 30% over the UT day.
Monthly T index:
Month T index
May 1
Jun -12
Jul -13
4B. AUSTRALIAN REGION IONOSPHERIC FORECAST
Date T index MUFs
22 Jun -5 Near predicted monthly values
23 Jun -5 Near predicted monthly values
24 Jun -5 Near predicted monthly values
COMMENT: MUFs were near predicted monthly values with minor to
mild enhancements on UT day 21 June across the Australian regions.
Sporadic E was observed over some Australian sites. MUFs in the
Australian region are expected to be mostly near monthly predicted
to mildly enhanced levels for the next three UT days, 22 to 24
June.
-----------------------------------------------------------
5. SPACE ENVIRONMENT SUMMARY
GOES satellite data for 20 Jun
Daily Proton Fluence >1 MeV: 6.5E+04
Daily Proton Fluence >10 MeV: 4.7E+04
Daily Electron Fluence >2 MeV: 1.30E+06 (normal fluence)
Electron Fluence Daily Deep Dielectric Discharge Probability: 1%
Fluence (flux accumulation over 24hrs)/ cm2-ster-day.
X-ray background: <A1.0
DSCOVR Satellite Solar Wind Day Averaged Data for 20 Jun
Speed: 326 km/sec Density: 14.3 p/cc Temp: 25000 K Bz: 1 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