SIDC Latest daily space weather bulletin

The forecaster on duty at the SIDC produces each day (nominal issuetime 12:30UT) a daily bulletin of Solar and Space Weather. The bulletin includes a summary of the observed activity over the past 24h, as well as an outlook on the activity for the next days.


Issuedate
2021-06-24
Solar Weather
Solar activity has been very low over the past 24 hours. Catania region 7 (NOAA AR 12833) is rotating on the western solar hemisphere. A northern and a southern spotless region are present on the eastern hemisphere. The solar activity is expected to remain at low levels, with a small change of C class flares over the next 24 hours. No Earth-directed coronal mass ejections have been confirmed in the available coronagraphic imagery. The greater than 10 MeV proton flux was at background levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours. The greater than 2 MeV electron flux was below the 1000 pfu threshold in the past 24 hours and is expected to remain so during the next 24 hours. The 24h electron fluence was at normal levels in the last 24 hours and is expected to stay at normal levels for the next 24 hours.
Geospace and geomagnetism
The solar wind speed slightly decreased, fluctuating between 310 and 370 km/s over the past 24 hours. The total magnetic field strength had values between 3 and 5 nT, while its Bz component varied between -4 and 4 nT. The interplanetary magnetic field phi angle changed to the positive sector (directed away from the Sun) at about June 23rd 12:30UT. Over the next 24 hours, solar wind condition can be expected to be at about the same or slightly elevated levels. Geomagnetic conditions were at quiet to unsettled levels (NOAA Kp 0-2 and K Dourbes 0-3) over the past 24 hours. The are expected to remain at about those levels, with a slight chance of active conditions over the next 24 hours.

This web page forms part of the ESA Space Situational Awareness Programme's network of space weather service development activities, and is supported under ESA contract number 4000113186/15/D/MRP.

For further product-related information or enquiries contact helpdesk. E-mail: helpdesk.swe@ssa.esa.int

All publications and presentations using data obtained from this site should acknowledge Solar Influences Data analysis Centre (SIDC) at the Royal Observatory of Belgium (ROB) and The ESA Space Situational Awareness Programme.

For further information about space weather in the ESA Space Situational Awareness Programme see: www.esa.int/spaceweather

Access the SSA-SWE portal here: swe.ssa.esa.int

The data contained in the present page are Intellectual Property of the Royal Observatory of Belgium (ROB). Use of the data is restricted by the ROB data policy.

component = latest

Available at:

https://ssa.sidc.be/prod/API/index.php?component=latest&pc=S110&psc=a

Returns current SIDC ursigram in json format.

Format

JSON example
[{
"data":
{
"date_of_issue":[datetimestamp],
"bulletin_geomagnetism":[text]
"bulletin_solar":[text]
}
}], REPEAT

component = archive

Available at:

https://ssa.sidc.be/prod/API/index.php?component=archive&pc=S110&psc=a

Optional parameters: dts_start, dts_end in format yyyy-MM-ddTHH:mm:ss
Returns current SIDC ursigram in json format.

Format

JSON example
[{
"data":
{
"date_of_issue":[datetimestamp],
"bulletin_geomagnetism":[text]
"bulletin_solar":[text]
}
}], REPEAT
Note: Bulletins BEFORE 2013-04-24 contain one text value with key 'bulletin' instead of two text values with keys 'bulletin_geomagnetism' and 'bulletin_solar'

SIDC Ursigram

The SIDC (RWC Belgium) forecaster on duty observes every day all relevant Solar and Space Weather data, and summarizes both the observed Space Weather of the past 24h and the expected Space Weather for the next 48h in a daily bulletin. The nominal issue time of this bulletin is 12:30UT. Historically this textual bulletin was distributed within the URSIGRAM message along with several other measurement and forecasted values, partly produced by the SIDC and partly produced elsewhere and being redistributed.

The SIDC daily bulletin consists presently of two textual paragraphs: One summarizing Solar Weather over the past 24h and next 48h, and one summarizing near-Earth solar wind conditions and geomagnetism over the past 24h and next 48h. Prior to April 24, 2013 these paragraphs were not stored separately and they are hence only available as one combined paragraph. Given the textual character of this product quantitative validation is impossible.

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