SIDC/CACTus Latest automated halo CME alert
The SIDC data processing pipeline analyses the outcome of the near-real-time runs of the CACTus package and alerts for the occurrence of CMEs with an angular width of over 150 degrees.
The SIDC data processing pipeline analyses the outcome of the near-real-time runs of the CACTus package and alerts for the occurrence of CMEs with an angular width of over 150 degrees.
| issue time | alert text |
|---|---|
2021-03-18T01:31:12.094996 |
A halo or partial-halo CME was detected with the following characteristics:
t0 | dt0| pa | da | v | dv | minv| maxv|
2021-03-16T10:36:07.594 | 5.0 | 188 | 158 | 166 | 9 | 142 | 188
t0: onset time, earliest indication of liftoff
dt0: duration of liftoff (hours)
pa: principal angle, counterclockwise from North (degrees)
da: angular width of the CME (degrees),
v: median velocity (km/s)
dv: variation (1 sigma) of velocity over the width of the CME
mindv: lowest velocity detected within the CME
maxdv: highest velocity detected within the CME
|
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
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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. We kindly acknowledge the provision by the SOHO/LASCO team of the coronograph data that lie at the basis of these CME detections.
https://ssa.sidc.be/prod/API/index.php?component=latest&pc=S112&psc=b
Returns SIDC's CACTus Halo CME detection alert.Note 1: All names in the JSON contain 'presto'. This is a database naming convention and should not be confused with the human generated naming convention.
Note 2: Results are (intentionally) not sorted.
JSON example| { "presto_text_cactus_detection_group_permanent": [ { "id": [unique id] "data": { "text": [alert text], "issue_time": [issue time alert], "creator": [integer_value] }, "name": [unique name for this record], "event_type":"presto_text_cactus_detection_group_permanent" }, REPEAT ] } |
https://ssa.sidc.be/prod/API/index.php?component=archive&pc=S112&psc=b
Optional parameters: dts_start, dts_end in format yyyy-MM-ddTHH:mm:ss
Returns SIDC's CACTus Halo CME detection alert.
Note 1: All names in the JSON contain 'presto'. This is a database naming convention and should not be confused with the human generated naming convention.
Note 2: Results are (intentionally) not sorted.
JSON example| { "presto_text_cactus_detection_group_permanent": [ { "id": [unique id] "data": { "text": [alert text], "issue_time": [issue time alert], "creator": [integer_value] }, "name": [unique name for this record], "event_type": "presto_text_cactus_detection_group_permanent" }, REPEAT ] } |
The SIDC data processing pipeline analyses incoming GOES X-ray data in near real time and reports on the occurrence of X-ray flares of Classes M5 and up. The detection method includes the identification of start, peak and end time of the flare and includes a delay of 30 min to assure the reliable detection of the end time.
The near real time detections of coronal mass ejections by the CACTus software (product S111) produce alerts as soon as the angular width exceeds 150 degrees. The alerts can be queried and (from 06/04/2004 onwards) the underlying detections as provided in S111 can be consulted.
The forecaster on duty at the SIDC observes and processes all relevant Space Weather data, including automated feature alert processes (such as the S112a and S112b products). Based on his/her observations the forecaster on duty triggers alerts where automated processes have failed or are late and follows up and provides complementary information on the automated alerts. Presently such "Presto" messages are in general undifferentiated and unconnected messages but the present version introduces the ability to display and query the connection with earlier "Flaremail" (S112a) and "CACTus alerts" (S112b).