Viewing archive of Friday, 15 November 2002

Solar activity report

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.
Report of Solar-Geophysical Activity 2002 Nov 15 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 319 Issued at 2200Z on 15 Nov 2002

IA. Analysis of Solar Active Regions and Activity from 14-2100Z to 15-2100Z

Solar activity was moderate due to the occurrence of two M-class events, the first being an impulsive M1.0 flare observed at 14/2226 UTC. No corresponding optical report was received, however available H-alpha imagery suggests Region 195 (S15E53) as the likely source. This region appears to be developing a delta configuration in its leading spot, and has grown in size and spot count. At 15/0124 UTC, an optically uncorrelated M2.4 flare occurred. LASCO imagery following this event suggests an east limb source, possibly the newly numbered Region 198 (S16E78), which has just rotated into view. Other activity included a series of C-class events from Region 192 (N13W47), the largest being a C8/Sf at 15/0536 UTC. This region has exhibited significant growth in size and complexity over the past two days. Region 191 (S18W16) remains the largest and most complex region on the visible disk, but produced only minor C-class activity today.
IB. Solar Activity Forecast
Solar activity is expected to be moderate, with a chance for isolated major flare activity over the next three days. The regions discussed in section 1A above are all likely candidates for notable flare activity.
IIA. Geophysical Activity Summary 14-2100Z to 15-2100Z
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be unsettled to active with isolated minor storm periods possible during the first two days of the forecast period, under the influence of a favorably positioned coronal hole. Predominantly unsettled conditions are expected by day three, along with elevated flux levels for energetic electrons in the wake of the expected coronal hole effects.
III. Event Probabilities 16 Nov to 18 Nov
Class M75%75%75%
Class X10%10%10%
Proton05%05%05%
PCAFyellow
IV. Penticton 10.7 cm Flux
  Observed       15 Nov 198
  Predicted   16 Nov-18 Nov  200/200/195
  90 Day Mean        15 Nov 177
V. Geomagnetic A Indices
  Observed Afr/Ap 14 Nov  005/009
  Estimated     Afr/Ap 15 Nov  010/011
  Predicted    Afr/Ap 16 Nov-18 Nov  020/030-018/025-015/015
VI. Geomagnetic Activity Probabilities 16 Nov to 18 Nov
A. Middle Latitudes
Active40%35%25%
Minor storm15%10%05%
Major-severe storm01%01%01%
B. High Latitudes
Active45%30%30%
Minor storm15%15%10%
Major-severe storm05%05%01%

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