Viewing archive of Tuesday, 12 May 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 May 12 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 132 Issued at 2200Z on 12 MAY 1998 ::::::::::::::::::::::::::::::::::: CORRECTED COPY :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::

IA. Analysis of Solar Active Regions and Activity from 11-2100Z to 12-2100Z

SOLAR ACTIVITY WAS LOW. REGION 8218 (S20W05) PRODUCED A C1 X-RAY FLARE AND A B6/SF EARLIER IN THE DAY. THE ACTIVITY DECLINED TO VERY LOW LEVELS AFTER 12/0830UT WITH THE EXCEPTION OF AN ISOLATED C1 FLARE AT 12/1846UT.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW. THERE IS A FAIR CHANCE FOR AN M-CLASS FLARE FROM REGION 8218.
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. THE GREATER THAN 2 MEV ELECTRON FLUX INCREASED TO CONSISTENT HIGH LEVELS AFTER 12/1400UT.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED THROUGH THE PERIOD. THE GREATER THAN 2 MEV ELECTRON FLUX IS EXPECTED TO REMAIN AT MODERATE TO HIGH LEVELS.
III. Event Probabilities 13 MAY to 15 MAY
Class M20%20%20%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       12 MAY 112
  Predicted   13 MAY-15 MAY  112/110/108
  90 Day Mean        12 MAY 108
V. Geomagnetic A Indices
OBSERVED AFR/AP 11 MAY  008/013
ESTIMATED AFR/AP 12 MAY  012/012
PREDICTED AFR/AP 13 MAY-15 MAY  010/010-010/012-010/010
VI. Geomagnetic Activity Probabilities 13 MAY to 15 MAY
A. Middle Latitudes
Active10%10%10%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active20%20%20%
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!

SpaceWeatherLive Pro
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-flare2024/11/24M1.0
Last geomagnetic storm2024/11/10Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
October 2024166.4 +25
November 2024144.7 -21.7
Last 30 days158.7 +10.9

This day in history*

Solar flares
12000X2.81
22001X1.68
32000X1.18
42000M5.13
51999M2.97
DstG
11982-192G3
21978-149G3
32001-145
41986-105G3
52023-99G2
*since 1994

Social networks