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

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 269 Issued at 2200Z on 26 SEP 1997

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

SOLAR ACTIVITY WAS LOW. THE LARGEST FLARE OF THE PAST DAY WAS A C4/SN AT 26/0317Z IN REGION 8088 (S29W16). THIS REGION HAS SHOWN SLOW DECAY IN BOTH SUNSPOT AREA AND NUMBER SINCE YESTERDAY. THE REMAINING SUNSPOTS IN THIS REGION ARE IN A SIMPLE BIPOLAR CONFIGURATION.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW. C-CLASS ACTIVITY IS EXPECTED IN REGION 8088. AN ISOLATED M-CLASS FLARE IS ALSO POSSIBLE.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO ENTER STORM CONDITIONS WITHIN THE NEXT 24 HOURS IN RESPONSE TO ACTIVITY OBSERVED ON 23-24 SEP.
III. Event Probabilities 27 SEP to 29 SEP
Class M30%30%30%
Class X01%01%01%
Proton02%02%02%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       26 SEP 089
  Predicted   27 SEP-29 SEP  090/090/090
  90 Day Mean        26 SEP 082
V. Geomagnetic A Indices
OBSERVED AFR/AP 25 SEP  003/003
ESTIMATED AFR/AP 26 SEP  005/007
PREDICTED AFR/AP 27 SEP-29 SEP  040/030-020/020-015/018
VI. Geomagnetic Activity Probabilities 27 SEP to 29 SEP
A. Middle Latitudes
Active30%30%30%
Minor storm15%15%15%
Major-severe storm05%05%05%
B. High Latitudes
Active30%30%30%
Minor storm15%15%15%
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