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Weekly space weather report created by Emily Schomp, summer intern at Harvard Smithsonian Center for Astrophysics
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Space Weather 2013 July 30th - August 5th
Activity: Very Low
Xray Flares: 3 C Class Optical Flares: 12 S class Earth CMEs: 1 Radio Bursts: 5 Proton Events: none Solar Wind: Steady
Stream, minor storm on 4th
YAY SUN! Martha’s Vineyard Online
C-Class Flares Region 1809 • C3 at 30/2219 UTC • C1 at 31/0518 UTC Region 1801 • C1/S at 30/0115 UTC
Filament Eruption and CME • Time
o Start: 12:36 o Duration: 3.5 hrs
• Velocity: 569 km/s o Minimum: 466 km/s o Maximum: 625 km/s o Variation: 50
• Principal Angle: 238 • Angular Width: 46 • ETA: August 4
Filament at 304 AIA
STEREO Footage
Stereo B Stereo A
SOHO LASCO C2 Footage
Enlil Solar Wind Prediction 8 cm-3
4.8 x 104 K
520 km/s
-3 nT
Cone Model: Density
Cone Model: Velocity
Cone Model: Dynamic Pressure
ACE Week Data
Zoom-In: August 4th
total field, temperature and wind speed begin to rise Total field rise from 4 nT to 16 nT Bz component turns mostly southward
Near-Earth Effects (GOES) Electron Flux (cm-2 s-1 sr-1)
Proton Flux (cm-2 s-1 sr-1) Hp Index (nT) Kp index
High Altitude Geomagnetic Storm
No major effects at lower altitudes
Radio Bursts • All at 245 MHz, observed at Learmonth, Australia • July 31st
o At 2:12, 100 Jy • August 2nd
o At 6:28, 180 Jy o At 6:40, 100 Jy
• August 4th
o At 3:25, 140 Jy • August 5th
o At 6:32, 200 Jy
Current Forecast? –Very Low Activity
6-8 cm-3
2 x 104 K
300-400 km/s
Thank you!
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