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Here is this week’s space weather and geophysical report, issued 2015 Apr 06 0133 UTC.

Highlights of Solar and Geomagnetic Activity
30 March – 05 April 2015

Solar activity was at low levels throughout the period. Region 2303
(N19, L=066, class/area=Hkx/400 on 17 Mar) produced low to mid-level
C-class activity early in the period while Regions 2318 (N10, L=199,
class/area=Dao/199 on 05 Apr) and 2320 (S12, L=212,
class/area=Dai/140 on 05 Apr) each produced only low-level C-class
flare activity throughout the remainder of the period.

A filament eruption centered near S29E28 was observed in SDO/AIA 193
imagery between 04/2225-2330 UTC. A long-duration C3/1f hyderflare
was measured during this event and had an associated Type-II radio
emission. The subsequent fast-moving coronal mass ejection (CME) was
first observed in SOHO/LASCO C2 coronagraph imagery beginning at
04/2336 UTC. WSA-ENLIL model output suggests a glancing blow arrival
of this CME late on 07 April.

No proton events were observed at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels on 30 Mar and normal to moderate levels on 31 Mar-05
Apr.

Geomagnetic field activity was at quiet to unsettled levels on 02-04
Apr with an isolated period of active conditions observed between
2100-2359 UTC on 02 Apr due to the effects of a positive polarity
coronal hole high speed stream. Quiet to unsettled levels were
observed on 30 Mar-01 Apr, and 05 Apr under a mostly nominal solar
wind environment.

Forecast of Solar and Geomagnetic Activity
06 April – 02 May 2015

Solar activity is expected to be low (below NOAA Scale event
thresholds) with a slight chance for M-class (R1-Minor) flare
activity throughout the outlook period.

No proton events are expected at geosynchronous orbit.

The greater than 2 MeV electron flux at geosynchronous orbit is
expected to reach high levels on 22-24 Apr and 02 May, moderate
levels on 06-08, 11-14, 17, 20-21 Apr, and 27 Apr-01 May, and at
normal levels for the remainder of the period.

Geomagnetic field activity is expected to be at G1 (Minor)
geomagnetic storm levels on 15-16, 18-19, and 25-27 Apr due to
coronal hole high speed stream effects. Active conditions are
expected on 07-09 Apr due to the anticipated arrival of the 04/05
Apr CME. Active conditions are expected on 17, 20 Apr, and 28 Apr-01
May due to coronal hole high speed stream effects with generally
quiet to unsettled levels likely for the remainder of the period.

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