Solar activity report

Viewing archive of Wednesday, 28 May 1997

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 1997 May 28 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 148 Issued at 2200Z on 28 MAY 1997

IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z

SOLAR ACTIVITY WAS LOW. TODAY'S ONLY C-CLASS EVENT OCCURRED AT 0342Z: THE OPTICAL COUNTERPART WAS NOT OBSERVED. REGIONS 8046 (S27W01) AND 8047 (N26E55) ARE THE ONLY SPOTTED REGIONS VISIBLE AS REGION 8045 (N02, WEST LIMB) HAS ROTATED OFF THE DISK. BOTH OF THESE GROUPS CONSIST OF SMALL SPOTS WITHOUT PENUMBRA.

IB. Solar Activity Forecast

SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW.

IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z

THE GEOMAGNETIC FIELD WAS QUIET DURING THE PAST 24 HOURS.

IIB. Geophysical Activity Forecast

THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS.

III. Event Probabilities 29 MAY to 31 MAY

Class M	01%	01%	01%
Class X	01%	01%	01%
Proton	01%	01%	01%
PCAF	GREEN

IV. Penticton 10.7 cm Flux

  Observed       28 MAY 077
  Predicted   29 MAY-31 MAY  077/077/077
  90 Day Mean        28 MAY 074

V. Geomagnetic A Indices

OBSERVED AFR/AP 27 MAY  017/021
ESTIMATED AFR/AP 28 MAY  005/007
PREDICTED AFR/AP 29 MAY-31 MAY  008/008-007/008-007/008

VI. Geomagnetic Activity Probabilities 29 MAY to 31 MAY

A. Middle Latitudes
Active	10%	10%	10%
Minor storm	05%	05%	05%
Major-severe storm	01%	01%	01%

B. High Latitudes
Active	15%	15%	15%
Minor storm	10%	10%	10%
Major-severe storm	01%	01%	01%

All times in UTC

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

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The strength of the interplanetary magnetic field is moderate (10.86nT), the direction is North (1.1nT).

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