SIDC ursigram

:Issued: 2019 Mar 18 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 90318
GEOALERT BRU077
UGEOA 30512 90318 1230/ 9930/ 
10182 21182 30182 
99999
PLAIN
NOTE: the above forecasts are valid from 1230UT, 18 Mar 2019 until 20 Mar
2019
COMMENT: There are no active regions visible on the solar disk. No C-class
flares in past 24 h. Solar activity is expected to remain at very low
levels.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar
protons have remained at background levels over the past 24 hours.

The solar wind speed is at 350 km/s with interplanetary magnetic fields of
5 nT. Geomagnetic conditions have been quiet to unsettled (K = 1 - 3) in
the past 24 h. A relatively long magnetic field with low variability
together with low temperature could have marked the arrival yesterday of
the March 12 CME. The effect of a high speed stream from a small equatorial
coronal hole, with positive magnetic field polarity, may reach the Earth in
about 24 h and cause up to active geomagnetic storm conditions (K = 4).



TODAY'S ESTIMATED ISN  : 013, BASED ON 17 STATIONS.
UGEOI 30512 90318 1230/ 17/// 
1//// 20690 3015/ 4//// 8//// 9//// 
99999
UGEOR 30512 90318 1230/ ///// ///// 
99999
UMAGF 30503 90318 1004/ 17063 1/011 23212 32101
UMAGF 31523 90318 0000/ 17006 1/015 25333 31321
BT
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