[Ips-dsgr] SWS Daily Report - 25 June 20 issued 2331 UT on 25 Jun 2020

Fri Jun 26 09:31:26 EST 2020

SUBJ: SWS DAILY SOLAR AND GEOPHYSICAL REPORT
ISSUED AT 2330UT/25 JUNE 2020 BY Space Weather Services
FROM THE AUSTRALIAN SPACE FORECAST CENTRE
SUMMARY FOR 25 JUNE AND FORECAST FOR 26 JUNE - 28 JUNE
STATUS INDICATORS SOL:GREEN   MAG:GREEN     ION: GREEN
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1A. SOLAR SUMMARY
Activity 25 Jun:  Very low

Flares: none.

Observed 10.7 cm flux/Equivalent Sunspot Number for 25 Jun:  69/3

1B. SOLAR FORECAST
             26 Jun             27 Jun             28 Jun
Activity     Very low           Very low           Very low
Fadeouts     None expected      None expected      None expected
10.7cm/SSN    69/3               69/3               69/3

COMMENT: Solar activity was Very Low on UT day 25 June. There 
are currently no numbered active regions on the visible solar 
disk. Very Low solar activity is expected for the next three 
UT days, 26-28 June. No Earthward directed CMEs were observed 
in the available coronagraph images. During UT day 25 June, the 
solar wind speed varied between 320-360 Km/s. The total IMF (Bt) 
varied between 2-5 nT and the north-south IMF component (Bz) 
varied mostly between +/-3 nT. The solar wind speed is expected 
to be mostly near its background levels today, 26 June, then 
may become slightly enhanced from 27 June due to weak coronal 
hole effects.

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2A. MAGNETIC SUMMARY

Geomagnetic field for Australian Region 25 Jun: Quiet

Estimated Indices 25 Jun : A   K           
   Australian Region       0   01000001
      Cocos Island         1   11000001
      Darwin               1   11100001
      Townsville           1   11100001
      Learmonth            1   00110001
      Alice Springs        0   00000001
      Gingin               0   00000001
      Canberra             0   01000000
      Hobart               1   01000101    

Estimated Antarctic Regional K Indices 25 Jun :
      Macquarie Island     0   00000000
      Casey                2   12100101
      Mawson               9   31110115

Observed Regional daily pc3 Indices 25 Jun : 
      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 25 Jun : A 
           Fredericksburg         6
           Planetary              5                         

Observed AFr/Ap Indices 24 Jun :  A   K
           Fredericksburg         7
           Planetary              5   2211 1112     

2B. MAGNETIC FORECAST 
Date      Ap    Conditions
26 Jun     7    Mostly Quiet
27 Jun    10    Quiet to Unsettled
28 Jun     7    Mostly Quiet

COMMENT: On UT day 25 June, geomagnetic conditions were quiet 
in the Australian region and mainly quiet in the Antarctic region, 
with one isolated minor storm period recorded on one Antarctic 
station. Global geomagnetic activity is expected to be mostly 
quiet today, 26 June. Conditions may increase to unsettled levels 
on 27 June due to minor coronal hole effects.

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3A. GLOBAL HF PROPAGATION SUMMARY
	            Latitude Band
Date        Low            Middle         High 
25 Jun      Normal         Normal         Normal         

PCA Event : No event.

3B. GLOBAL HF PROPAGATION FORECAST
	            Latitude Band
Date        Low            Middle         High 
26 Jun      Normal         Normal         Normal
27 Jun      Normal         Normal         Normal
28 Jun      Normal         Normal         Normal

COMMENT: Mostly normal HF conditions are expected for the next 
three UT days, 26-28 June.

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4A. AUSTRALIAN REGION IONOSPHERIC SUMMARY

Date   T index
25 Jun    -4

Observed Australian Regional MUFs
   Cocos Island Region:
      No data available.
   Niue Island Region:
      Near predicted monthly values during local day.
      Enhanced by 15% during local night.
   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 50% during local night.
   Antarctic Region (Casey/Scott Base/Davis/Mawson):
      Near predicted monthly values 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
26 Jun    -5    Near predicted monthly values
27 Jun    -5    Near predicted monthly values
28 Jun    -5    Near predicted monthly values

COMMENT: MUFs were near predicted monthly values to mildly enhanced 
on UT day 25 June. Sporadic E and spread F were observed at times 
over some Australian sites. MUFs in the Australian region are 
expected to be mostly near predicted monthly values for the next 
three UT days, 26-28 June.

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5. SPACE ENVIRONMENT SUMMARY

GOES satellite data for 24 Jun
       Daily Proton Fluence >1 MeV:   7.6E+04
       Daily Proton Fluence >10 MeV:  4.7E+04
       Daily Electron Fluence >2 MeV: 1.20E+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 24 Jun
Speed: 324 km/sec  Density:    6.7 p/cc  Temp:    37100 K  Bz:  -1 nT

(Courtesy Space Weather Prediction Center, Boulder USA)
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Space Weather Services              email: asfc at bom.gov.au
Bureau of Meteorology
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Haymarket NSW 1240  AUSTRALIA       FTP: ftp://ftp-out.sws.bom.gov.au
tel: +61 2 9213 8010                fax: +61 2 9213 8060 

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