Geophysical report

Viewing archive of Thursday, 7 February 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 Feb 07 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 038 Issued at 0245Z on 07 Feb 2002 This report is compiled from data received at SWO on 06 Feb

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0111 0111 0111                       120
0433 0440 0443  9816 S17W48 C8.2  Sf 520    25     II
0451 0509 0513  9816 S17W50 C2.92 Sf 180
1126 1132 1141              M1.4            88
1522 1528 1529                       600
1704 1707 1711  9816 S11W54 C1.7  Sf 320
1719 1719 1719                       130
2010 2014 2017  9815 N12E31 C5.3  Sf 120

B. Proton Events

None

C. Geomagnetic Activity Summary

The geomagnetic field was at unsettled to active levels with one 3 hour period of quiet conditions. A large coronal hole is centered at S10W40 and is producing the unsettled to active conditions. This coronal hole has an average solar wind speed of 625 km/s over the last 24 hours. Average Bz for the last 24 hours was a negative 0 - 5 nT.

D. Stratwarm

None

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

10 cm 203  SSN 226  Afr/Ap 015/016   X-ray Background C1.3
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 4.1e+05   GT 10 MeV 1.2e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 2.90e+05 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 3 4 3 3 4 3 2 Planetary 3 3 4 4 4 3 3 2

F. Comments

  None

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G2 - Moderate geomagnetic storm

Observed Kp: 6
Threshold reached: 22:29 UTC

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Tórshavn
Reykjavik
Trondheim

The solar wind speed is currently moderately high (603 km/sec.)

The strength of the interplanetary magnetic field is high (22.65nT), the direction is North (13.39nT).

The Disturbance Storm Time index predicts moderate storm conditions right now (-63nT)

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