SIDC ursigram

:Issued: 2019 May 21 1230 UTC
:Product: documentation at http://www.sidc.be/products/uge
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# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
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SIDC URSIGRAM 90521
GEOALERT BRU141
UGEOA 30512 90521 1230/ 9930/ 
10212 20212 30212 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 21 May 2019 until 23 May
2019
COMMENT: Over the past 24 hours solar activity has been low. The visible
solar disc was spotless and the X-ray flux remained below B-class level. No
Earth directed Coronal Mass Ejections (CMEs) have been detected. The
greater than 10MeV proton flux remained at background levels over the past
24 hours. Solar activity is expected to remain low over the next 24 hours.

The solar wind speed has fluctuated between 355 and 450 km/s over the past
24 hours. The total magnetic field strength fluctuated around 5 nT for much
of the period, with a minimum of 0.6 nT and a maximum of 7.1 nT recorded.
The Bz component was predominantly positive and ranged between -4.8 and
+7.1 nT.

Geomagnetic conditions have been quiet to unsettled over the past 24 hours,
with Kp index (NOAA) and local K index (Dourbes) ranging between 1-2 and
1-3, respectively. Quiet to unsettled geomagnetic conditions are expected
to continue over the next 24 hours, due to the weak solar wind stream
associated with the patchy negative polarity equatorial coronal hole which
began to traverse the central meridian on 18 May.



TODAY'S ESTIMATED ISN  : 000, BASED ON 21 STATIONS.
UGEOI 30512 90521 1230/ 20/// 
1//// 20690 3008/ 4//// 8//// 9//// 
99999
UGEOR 30512 90521 1230/ ///// ///// 
99999
USSPS 31405 21060 00042
UMAGF 30503 90521 1004/ 20067 1/008 21111 31112
UMAGF 31523 90521 0000/ 20002 1/008 24211 32211
BT
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