Geophysical report

Viewing archive of Friday, 31 August 2001

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 2001 Aug 31 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 243 Issued at 0245Z on 31 Aug 2001 This report is compiled from data received at SWO on 30 Aug

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
0130 0139 0143  9601 N12E52 C5.4  Sf 12000  34     II
0920 0932 0939                       100
0944 0946 0953                       160
1309 1309 1309                       480
1745 1757 1811  9591 S21W28 M1.5  2n        37
2034 2038 2041  9601 N15E44 M3.0  1n 270000 930    II
2243 2243 2245                       150

B. Proton Events

None

C. Geomagnetic Activity Summary

The geomagnetic field is expected to be quiet to unsettled on the first day of the forecast period with active conditions expected on the second and third day due to recurrent coronal hole effects.

D. Stratwarm

None

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

10 cm 199  SSN 138  Afr/Ap 016/013   X-ray Background C1.2
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 1.4e+06   GT 10 MeV 1.6e+04 p/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
Daily Electron Fluence
GT 2 MeV 4.00e+06 e/(cm2-ster-day)
(GOES-8 satellite synchronous orbit W75 degrees)
3 Hour K-indices
Boulder 2 2 3 4 4 4 3 2 Planetary 2 2 3 3 3 4 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 moderate possibility for aurora to appear at the following high latitude regions in the near future

Reykjavik

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

Tórshavn
Oulu, Kuopio
Trondheim
Luleå, Sundsvall, Umeå

The solar wind speed is currently moderately high (595.4 km/sec.)

The strength of the interplanetary magnetic field is high (21.5nT), the direction is North (9.03nT).

The Disturbance Storm Time index predicts moderate storm conditions right now (-60nT)

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