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!