Viewing archive of Friday, 20 February 1998

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 1998 Feb 20 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 051 Issued at 2200Z on 20 FEB 1998

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

SOLAR ACTIVITY WAS LOW, DUE TO A SINGLE C1/SF EVENT FROM REGION 8156 AT 20/1011Z. REGION 8156 REMAINS A STABLE 9-SPOT 'EKO' BETA-GAMMA GROUP.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW, WITH THE CONTINUED POSSIBILITY OF ISOLATED C-CLASS ACTIVITY FROM REGION 8156.
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
THE GEOMAGNETIC FIELD HAS BEEN MOSTLY QUIET FOR THE PAST 24 HOURS, EXCEPT FOR A SINGLE ISOLATED PERIOD OF ACTIVE CONDITIONS RECORDED DURING THE INTERVAL 20/0000-0300Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE MOSTLY QUIET FOR THE NEXT THREE DAYS.
III. Event Probabilities 21 FEB to 23 FEB
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       20 FEB 096
  Predicted   21 FEB-23 FEB  094/093/092
  90 Day Mean        20 FEB 096
V. Geomagnetic A Indices
OBSERVED AFR/AP 19 FEB  005/007
ESTIMATED AFR/AP 20 FEB  005/005
PREDICTED AFR/AP 21 FEB-23 FEB  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 21 FEB to 23 FEB
A. Middle Latitudes
Active10%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active10%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%

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!

100%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/11/06X2.39
Last M-flare2024/11/13M1.0
Last geomagnetic storm2024/11/10Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024170.8 +4.3
Last 30 days164.5 +20

This day in history*

Solar flares
12012M8.59
22012M4.14
32005M3.59
42012M3.56
52003M2.36
DstG
11960-339G5
21998-131G2
31989-121G1
41999-106G2
51979-92G1
*since 1994

Social networks