Solar activity report

Viewing archive of Monday, 26 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 26 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 146 Issued at 2200Z on 26 MAY 1997

IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z

SOLAR ACTIVITY HAS BEEN VERY LOW. OCCASIONAL LOW-LEVEL B-CLASS FLARES WERE OBSERVED DURING THE PERIOD, AS WERE OCCASIONAL TYPE III RADIO SWEEPS, BUT THERE WERE NO OBVIOUS SOURCE REGIONS FOR THESE EVENTS. GROUP 8046 (S27E28) CONTINUES TO BE A BIT MORE ACTIVE THAN THE OTHER TWO SPOTTED REGIONS ON THE DISK AS IT SHOWED INTERMITTENT BRIGHTENINGS IN H-ALPHA DURING THE DAY.

IB. Solar Activity Forecast

SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW.

IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z

THE GEOMAGNETIC FIELD WAS QUIET FROM 25/2100Z UNTIL 26/1000Z WHEN A WEAK SUDDEN IMPULSE WAS OBSERVED (THE IMPULSE MEASURED 13 NT IN BOULDER). FROM 26/1000Z-2100Z ACTIVITY HAS BEEN SLIGHTLY ENHANCED, RUNNING QUIET TO UNSETTLED AT MIDDLE LATITUDES, AND UNSETTLED TO SLIGHTLY ACTIVE AT HIGH LATITUDES.

IIB. Geophysical Activity Forecast

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

III. Event Probabilities 27 MAY to 29 MAY

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

IV. Penticton 10.7 cm Flux

  Observed       26 MAY 080
  Predicted   27 MAY-29 MAY  080/080/077
  90 Day Mean        26 MAY 074

V. Geomagnetic A Indices

OBSERVED AFR/AP 25 MAY  008/005
ESTIMATED AFR/AP 26 MAY  007/010
PREDICTED AFR/AP 27 MAY-29 MAY  010/008-010/008-010/008

VI. Geomagnetic Activity Probabilities 27 MAY to 29 MAY

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

B. High Latitudes
Active	05%	10%	05%
Minor storm	01%	05%	05%
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

Reykjavik

The strength of the interplanetary magnetic field is moderate (11.53nT), the direction is North (2.03nT).

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