Space Weather

August 14-19

•  23 C-Class X-ray flares •  2 M-Class X-ray flares •  26 Optical Flares •  Active Regions •  1 Earth-Directed CME •  10 Radio Bursts

Activity – Energetic!

Super Star Meets the Plucky Planet NASA

•  Most Active Regions, 11809, 11817, 11818

•  M class flares on 17th from 11818 o  18:24 M3.3 o  19:33 M1.4 o  Cause of CME, and type II

and IV radio sweeps

X-ray Flares

M

C

Energetic Events on 17th

Time X-ray

Peak Radio Flux Sweep Freq Intensity

Class Integ Flux 245 2695 II IV

18:16 - 18:35 18:49 - 19:54

M3.3 M1.4

0.021 0.046

260

110 150

2

1

Storm!

SEP associated with flares

Earth Weeklong Connectivity

•  ETA is 21st, expected to be glancing blow

•  Associated with the M flares

•  Fast! Measured 844 km/s

Type IV Halo CME

Dynamic Pressure Model for Halo on 17th

Velocity Model for Halo on 17th

Density Model for Halo on 17th

Storm hits 3:45 UTC on 16th

Proton Flux (cm-2 s-1 sr-1)

Electron Flux (cm-2 s-1 sr-1)

Kp Index Predicted Observed

Hp Index

BATS-R-US Simulation 8/16/13 From 2:30 to 12:00 UT

ACE Weekly Plasma Parameters

Bulk Speed km/s

Density cm-3

Ion Temperature K

Compression zone CH HSS

ACE Magnetic Field Weekly Data

Latitude Longitude

Magnetic Field Strength (nT) BX BY Total Field

Magnetic Field Strength (nT) BZ

Space Weather Fun!

Aurora at Carrot hill near Wellbank, (Angus, Scotland) taken Aug. 14 by Ben Hirst

Kreutz Sungrazer comet captured in SOHO

Sundiving Comet