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Weekly Bulletin on Solar and Geomagnetic Activity
Highlights on 7 - 13.04.2014 Г.,
Forecast on 14 - 21.04.2014,
Carrington Rotation 2149 (7.36.04.2014)

SUNSPOT-FORMING ACTIVITY REMINDER AT THE MODERATE LEVEL. AVERAGE
OF SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM WAS MADE W=054+10
/-10. ON THE VISIBLE SOLAR DISK CONSTANTLY OBSERVED 7 - 5 SMALL
SUNSPOT GROUPS, ALL QUITE.

NEXT WEEK IS EXPECTED THE MODERATE AND THE LOW LEVELS OF SUNSPOT
FORMING ACTIVITY. ESTIMATED MOST LIKELY WEEKLY AVERAGE VALUE OF
RELATIVE SUNSPOT NUMBER IN THE INTERNATIONAL SYSTEM FOR THE NEXT
WEEK IS EXPECTED W=050+10/-10.

FLARE ACTIVITY WAS AT THE LOW LEVEL. WITHIN THE PERIOD WERE OB-
SERVED 3 SOLAR FILAMENT EJECTIONS (NON GEOEFFCTIVE). BY SOHO AND
STEREO CORONOGRAPHS DATA THERE WERE OBSERVED 39 CME, ONE OF WHICH
WAS THE "PARTIAL HALO III" TYPE AND 2-THE TYPE "PARTIAL HALO II".
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FLARES to tm te c/p local. Class E(1-8A) AR RII/IV CME

DSF to te c/p local. l in deg. Fl AR CME
10.04 0004 0029 S14Е27L280 9
10.04 0622 1400 S31W35L342 14
10.04 >0945 <2312 S33E47L260 7
--------------------------------------------------------------------

NEXT WEEK FLARE ACTIVITY IS EXPECTED AT THE AVERAGE AND THE LOW LE-
VELS.

ON THE VISIBLE SOLAR DISK THE FOLLOWING CORONAL HOLES WERE OBSERVED:
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sign N end е end S end W end EE R G Observatories
CH - S32L294 S40L289 S65L299 S45L339 09.04 2 SDO, SOHO,....
CH + N35L324 N32L319 N16L331 N18L344 12.04 6 SDO, SOHO,....
R - solar rotations; KP - KIT PEAK solar observatory;
EE-date of possible geomag. disturbance in the Earth's environment.
G - geoeffectivity in last solar rotation;
A-active geomagnetic condition.
---------------------------------------------------------------------

AFTER 12.04/06 UT THE EARTH IS IN "-" SECTOR OF INTERPLANETARY MAGNE-
TIC FIELDS. THE FOLLOWING SECTORAL BOUNDARY -/+ THE EARTH SHOULD PASS
14.04.

APRIL 07 08 09 10 11 12 13 APRIL
Wus 106 094 095 078 083 074 095
F10.7 140 132 131 137 138 136 137
Хbcg B5.5 B3.5 В5.1 В8.0 В6.2 В5.7 B4.4 GOES
Sp 420 440 430 420 660 710 740 мдп
N 1 1 1 1 2
IMF -/+ + + + + +/- - АСЕ
е>2 9.9E+4 7.9Е+4 9.2Е+4 4.5Е+5 3.4Е+5 2.6Е+5 4.6E+5 GOES
Ie>2 pfu GOES
Ap 11 4 6 2 7 27 15 нТ Ар
Dst нТ KИOTO
Amsc 11 8 7 6 11 17 12 нТ ИЗМИРАН
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е>2 - a fluency in (electrons/cm2-day-sr) with E>2 MeV.
Ie>2 - the maximum intensity of electron flux in geostationary orbits
in days according to GOES 15 in (electrons/cm2-s-sr) for events
> 1000 pfu.

THE SMALL SOLAR PROTON EVENT WAS REGISTERED 5.04 FROM BACK SIDE FLARE
EVENT:
Pr (>10 MeV): tO - 5.04/07 UT; tmax - 06/12 UT: 1 pfu; te - 8/24 UT.

THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSTATIONARY ORBIT VERY HIGH
LEVEL NOT OBSERVED.

THE GREATER THAN 2 MeV ELECTRON FLUX AT GEOSTATIONARY ORBIT VERY HIGH
LEVEL NOT EXPECTED.

GEOMAGNETIC CONDITIONS REMAIN QUITE AND UNSETTLED. HOWEVER, ON APRIL 12
THE EARTH PASSED OVER HIGH-SPEED STREAM FROM THE SOLAR CORONAL HOLE OF
THE SOLAR NORTHERN HEMISPHERE. GEOMAGNETIC CONDITIONS BECAME ACTIVE. AC-
CORDING TO THE IZMIRAN DATA IS REGISTERED 6-hour SUBSTORM BY THE INTEN-
SITY G1. AT THE SAME TIME ACCORDING TO THE DATA OF CENTER IN BOULDER
THIS WAS THE 9-hour SUBSTORM OF INTENSITY G1.

NEXT WEEK THE GEOMAGNETIC CONDITIONS ARE EXPECTED UNSETTLED AND QUIET.

HIGHLIGHT AND FORECAST COMPOSED FROM DATA
OF NOAA SWPC http://www.sec.noaa.gov,
OF THE SOLAR INFLUENCES DATA ANALYSIS CENTER -
SIDC, BELGIUM http://sidc.oma.be/index.php3,
OF THE IZMIRAN, RUSSIA http://www.izmiran.ru