Post on 29-Jun-2015
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Space Weather July 23-29
Weekly Solar Wind
iSWA ACE Data
Latitude (black) Longitude (blue)
Mag Field (nT)
Bx (black) By (blue) Bz (red)
Bt
Bulk Proton Flow (km/s)
Proton Density (cm-3)
Temperature (K)
CME July 22 Cause of Solar Wind Turbulence?
932 km/s (762-1157 km/s) Variation of Velocity: 109 Start: 6:12 Duration: 3 hrs Principal Angle: 291o
Angular Width: 284o
Mostly directed At Stereo A
Hit Earth on 26th Caused flux in electron and proton levels Kp reached 4
iSWA magnetosphere simulations
C Flares from 1800 Potential
Cause of Halo CME
1793-2:37 1800-5:35, 5:36, 12:12, 12:28, 16: 1805-15:58
18:13 21:34
12:28, 18:18, 22:18
Data not recorded on solar monitor
Three Radio Bursts 245 MHz • 25th at 8:50-8:51, peak flux 530 • 26th at 6:32, peak flux 100 • 28 at 4:35, peak flux 190 • radio fluxes measured in Jansky (Jy)
o 1 Jy = 10-25 W/m2 . Hz = 10-23 erg/s . cm2 . Hz • Affected
o AM in Montreal Canada, Schoenewalde and Heidelberg Germany, and Netherlands
o Air Safety Communications in Nordholz ETMN Germany
o military communications satellites Skynet 5A, 5B and 5C
o GCI Alaskan Wireless Network
o Airnorth CAOC 2/Common (used for NATO communications)
o FLTSATCOM (satellite communication system of the U.S. Navy)
o Air Operations Control Station in Nieuw-Milligen, Netherlands
Halo CME on 26
Started 18:36 Lasted 4 hours Principal Angle: 216 Angular Width: 138 Velocity: 482 (241-762) Variation: 109
Weekend Aurora
NBC Nightly News on July 19
Current Forecast • Arrival: Aug 1-2 • Density: 5.5 to 7.5 cm-3 • Temperature: 35,000 to 50,000 K • Velocity
o Radial: 440 to 520 km/s o Latitude: 4 to -4 km/s o Longitude: 3 to -2 km/s
• Magnetic Field Strength o Radial: -2.2 to -3 nT o Latitude: 2.0 to 2.6 nT o Longitude*: 0.015 to -0.005
• Kp: 3 iSWA Forecast Page