Viewing archive of Monday, 16 March 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 Mar 16 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 075 Issued at 2200Z on 16 MAR 1998

IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z

SOLAR ACTIVITY WAS MODERATE. TWO OPTICALLY UNCORROLATED M-CLASS EVENTS OCCURRED: AN M2 WITH MINOR RADIO BURSTS AT 15/2141Z AND AN M1 AT 16/0102Z. NO SOON SITES WERE OBSERVING THE SUN DURING THE EVENTS BUT REGION 8179 (S22W17) IS THE LIKELY SOURCE. THIS REGION CONTINUES TO PRODUCE FREQUENT C-CLASS FLARES INCLUDING A C7/1N AT 16/1157Z AND A C6/1F AT 1714Z. THE REGION APPEARS TO HAVE MATURED NOW AS AN EKC, 50 SPOT BETA GAMMA GROUP WITH AREAL COVERAGE OF 800 MILLIONTHS. THE WEAK DELTA MAGNETIC CONFIGURATION IS NO LONGER APPARENT. CORONAL INSTRUMENTS ON THE SOHO SATELLITE OBSERVED A HALO/CME OFF THE SE LIMB BEGINNING AT 15/1930Z. THIS COINCIDES WITH THE THE MOST IMPULSIVE OF REGION 8179'S FLARES - YESTERDAY'S M1/1B. THE REMAINING REGIONS HAVE BEEN QUIET.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE MODERATE. REGION 8179 HAS LOST A LITTLE OF ITS MAGNETIC COMPLEXITY; HOWEVER, IT REMAINS A LARGE AND COMPLEX REGION, UNDERGOING FREQUENT CHANGES IN SUNSPOT CONFIGURATION. GOOD POTENTIAL STILL EXISTS FOR M-CLASS ACTIVITY.
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. SHORT-LIVED PERIODS OF ACTIVE CONDITIONS WERE OBSERVED AT HIGH LATITUDES.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO REMAIN QUIET TO UNSETTLED. ISOLATED ACTIVE CONDITIONS ARE AGAIN EXPECTED AT HIGH LATITUDES. A MINOR DISTURBANCE ASSOCIATED WITH YESTERDAY'S HALO/CME IS EXPECTED ON THURSDAY.
III. Event Probabilities 17 MAR to 19 MAR
Class M50%50%45%
Class X15%15%10%
Proton15%15%10%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       16 MAR 124
  Predicted   17 MAR-19 MAR  124/122/120
  90 Day Mean        16 MAR 096
V. Geomagnetic A Indices
OBSERVED AFR/AP 15 MAR  012/018
ESTIMATED AFR/AP 16 MAR  012/012
PREDICTED AFR/AP 17 MAR-19 MAR  010/012-010/008-015/012
VI. Geomagnetic Activity Probabilities 17 MAR to 19 MAR
A. Middle Latitudes
Active15%20%30%
Minor storm05%05%15%
Major-severe storm01%01%01%
B. High Latitudes
Active20%25%40%
Minor storm05%05%20%
Major-severe storm01%01%10%

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-flare2024/12/24M1.0
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
21998M1.83
32001M1.76
42001M1.41
52011M1.22
DstG
11988-85
21998-57
31978-57G2
42014-49
52002-39
*since 1994

Social networks