SIDC ursigram

3-day-forecast of solar and geomagnetic activity.
Source SIDC (RWC-Belgium)
Frequency Daily
Format Encoded data (ISES)
Mail header SIDC ursigram
SIDC code uge

Latest issue

:Issued: 2021 Aug 01 1239 UTC
:Product: documentation at http://www.sidc.be/products/uge
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
#--------------------------------------------------------------------#
SIDC URSIGRAM 10801
GEOALERT BRU213
UGEOA 30512 10801 1239/ 9930/ 
10012 20012 30012 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 01 Aug 2021 until 03 Aug
2021
COMMENT: The visible solar disc is spotless and the X-ray flux is below
C-level. A long duration B2.4-class flare was observed near NOAA AR-2849
Plage. The solar activity is expected to remain at low levels over the next
24 hours.

A large coronal dimming associated with the long duration B2.4-class flare
was observed on July 31 from 15:54 UTC to 18:06 UTC in the south-west
quadrant (near latitude -12 degrees and longitude 30 degree). Further
investigation on this event will be provided as data comes in.

The greater than 10 MeV proton flux was at nominal levels over the past 24
hours and is expected to remain so for 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.

The solar wind parameters (as observed by ACE and DSCOVR) show the
continuation of a slow return towards an ambient background and slow solar
wind speed regime. Solar wind speed decreased from about 460 km/s to 400
km/s. Total interplanetary magnetic field strength remained below 5 nT. The
Bz component underwent only weak deviations between -4.0nT and +3.5 nT. The
solar wind conditions are expected to continue it slow returned toward a
slow solar wind speed regime. The solar wind may be temporarily slightly
enhanced later today due to some possible effect of the arrival of the
coronal mass ejection observed on July 28 at 10:36 UTC (with a projected
speed of 400 km/s).

The geomagnetic conditions were mostly quiet over the past 24 hours with
some short periods of unsettled condition observed at the local station
Dourbes (K-Dourbes = 3). The conditions are expected to remain quiet as the
Earth is expected to remain in the mostly slow solar wind speed regime for
the next 24 hours.



TODAY'S ESTIMATED ISN  : 010, BASED ON 14 STATIONS.
UGEOI 30512 10801 1239/ 31/// 
1//// 20760 3008/ 4//// 8//// 9//// 
99999
UGEOR 30512 10801 1239/ 29/08 01101 
10025 2//// 3//// 4201/ 50010 60003 31817 00000 
99999
UMAGF 30503 10801 1004/ 31062 1/010 22221 32111
UMAGF 31523 10801 0000/ 31004 1/008 22232 32221
BT
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Details

Not available yet.
Check the ISES code book for information on ISES codes.