Viewing archive of Sunday, 12 July 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 Jul 12 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 193 Issued at 2200Z on 12 JUL 1998

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

SOLAR ACTIVITY BECAME VERY LOW. ONLY SMALL B-CLASS FLUCTUATIONS WERE OBSERVED. CURRENT DISK REGIONS WERE PREDOMINANTLY STABLE.
IB. Solar Activity Forecast
SOLAR ACTIVITY SHOULD BE VERY LOW TO LOW. SMALL C-CLASS EVENTS ARE POSSIBLE FROM REGIONS 8269 (N18E45) AND 8270 (S20E42).
IIA. Geophysical Activity Summary 11-2100Z to 12-2100Z
THE GEOMAGNETIC FIELD AT MID-LATITUDES WAS QUIET TO UNSETTLED. PLANETARY INDICES WERE QUIET TO ACTIVE. THE MOST DISTURBED PERIOD WAS FROM 12/0600-1200Z.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD SHOULD BE PREDOMINANTLY QUIET FOR THE NEXT THREE DAYS.
III. Event Probabilities 13 JUL to 15 JUL
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       12 JUL 099
  Predicted   13 JUL-15 JUL  097/096/095
  90 Day Mean        12 JUL 109
V. Geomagnetic A Indices
OBSERVED AFR/AP 11 JUL  011/011
ESTIMATED AFR/AP 12 JUL  008/012
PREDICTED AFR/AP 13 JUL-15 JUL  005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 13 JUL to 15 JUL
A. Middle Latitudes
Active10%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%
NOTICE: GOES-9 CONTINUES TO OPERATE AND THE X-RAY SENSOR REMAINS POINTED AT THE SUN. GOES-10 WILL BECOME OPERATIONAL THE WEEK OF 13 JUL AND WILL BEGIN ITS MOVEMENT TO 135W LONGITUDE SHORTLY THEREAFTER TO REPLACE GOES-9.

All times in UTC

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Current data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future

Oulu, Rovaniemi
Norilsk, Vorkuta

Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future

Kuopio
Arkhangelsk
Sundsvall, Umeå

Current data suggests there is a slight possibility for aurora to appear at the following middle latitude regions in the near future

Tampere
Petrozavodsk, Syktyvkar
The density of the solar wind is moderate (21.78 p/cm3)
The strength of the interplanetary magnetic field is moderate (10.64nT), the direction is slightly South (-8.58nT).
The Disturbance Storm Time index predicts moderate storm conditions right now (-79nT)

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