Viewing archive of Thursday, 20 November 1997

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 1997 Nov 20 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 324 Issued at 2200Z on 20 NOV 1997

IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z

SOLAR ACTIVITY WAS VERY LOW. REGION 8108 (N19W11) APPEARED TO SIMPLIFY AND DECAY DURING THE PERIOD, AND PRODUCED VERY LITTLE FLARE ACTIVITY. THE REGION CONSISTS OF APPROXIMATELY 30 SPOTS, WITH SOME MIXTURE OF MAGNETIC POLARITIES. IT MEASURES 260 MILLIONTHS IN WHITE LIGHT AREA. THE OTHER SPOTTED REGION VISIBLE, 8109 (S19E11) WAS QUIET AND STABLE.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW. WATCH REGION 8108 FOR C-CLASS FLARES AND, IF SOME RENEWED FLUX EMERGENCE OCCURS, AN ISOLATED M-CLASS EVENT.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE UNSETTLED TO ACTIVE. EFFECTS OF THE HALO CME ON NOVEMBER 17 ARE STILL POSSIBLE, AND THE LONG-DURATION C1 FLARE ON NOVEMBER 19 FROM DISK CENTER MAY BE INDICATIVE OF ANOTHER CME. THE SECOND CME IS EXPECTED TO IMPACT THE FIELD ON NOVEMBER 23.
III. Event Probabilities 21 NOV to 23 NOV
Class M20%20%20%
Class X05%05%05%
Proton05%05%05%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       20 NOV 089
  Predicted   21 NOV-23 NOV  090/090/090
  90 Day Mean        20 NOV 091
V. Geomagnetic A Indices
OBSERVED AFR/AP 19 NOV  004/003
ESTIMATED AFR/AP 20 NOV  005/005
PREDICTED AFR/AP 21 NOV-23 NOV  015/015-015/015-020/020
VI. Geomagnetic Activity Probabilities 21 NOV to 23 NOV
A. Middle Latitudes
Active30%30%40%
Minor storm10%10%15%
Major-severe storm05%05%05%
B. High Latitudes
Active40%40%50%
Minor storm15%15%25%
Major-severe storm05%05%05%

All times in UTC

<< Go to daily overview page

Latest news

Support SpaceWeatherLive.com!

A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!

SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/12/08X2.2
Last M-flare2024/12/25M4.9
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024115.2 -37.3
Last 30 days120.1 -38.2

This day in history*

Solar flares
12011M5.77
22024M4.9
32024M2.8
41998M1.83
52001M1.76
DstG
11988-85
21998-57
31978-57G2
42014-49
52002-39
*since 1994

Social networks