Geophysical report

Viewing archive of Tuesday, 17 December 2002

Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.

Solar and Geophysical Activity Summary 2002 Dec 17 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 351 Issued at 0245Z on 17 Dec 2002 This report is compiled from data received at SWO on 16 Dec

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0951 0951 0953                       120
1013 1013 1013                       140
1107 1115 1126  0225 N17E32 M2.5  1n        64     II/IV
1315 1324 1324                       170
2245 2255 2320  0226 S27E10 M1.9  1n
2333 2336 2340  0227 N06W08 M1.3  Sf

B. Proton Events

None

C. Geomagnetic Activity Summary

The geomagnetic field was predominantly quiet, with some isolated unsettled periods. A gradual reduction in high speed stream effects was apparent in data from the ACE satellite over the course of the day.

D. Stratwarm

None

E. Daily Indices: (real-time preliminary/estimated values)

10 cm 203  SSN 194  Afr/Ap 005/008   X-ray Background C1.4
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.8e+05   GT 10 MeV 1.2e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 1.20e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 1 2 1 1 2 2 2 2 Planetary 2 2 2 2 3 3 2 2

F. Comments

  Afr estimated from Boulder A.

All times in UTC

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The solar wind speed is currently moderately high (555 km/sec.)

The strength of the interplanetary magnetic field is moderate (18.88nT), the direction is North (6nT).

The maximum X-ray flux of the past two hours is:

C7.88

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