Viewing archive of Thursday, 30 July 1998

Solar activity report

Report of Solar-Geophysical Activity 1998 Jul 30 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 211 Issued at 2200Z on 30 JUL 1998

IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z

SOLAR ACTIVITY WAS VERY LOW. ONLY A FEW B-CLASS X-RAY FLARES OCCURRED, NONE OF WHICH HAD CORRESPONDING OPTICAL FLARE REPORTS. REGIONS 8280 (S22W41) AND 8282 (N31W34) REMAIN THE MOST COMPLEX SUNSPOT GROUPS ON THE VISIBLE DISK. BOTH REGIONS ARE DECAYING SLOWLY. NEW REGION 8288 (S26E61) WAS NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. FLARES ARE POSSIBLE IN REGIONS 8280 AND 8282. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 29/2100Z TO 30/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 31 JUL to 02 AUG
Class M15%15%15%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       30 JUL 115
  Predicted   31 JUL-02 AUG  112/110/108
  90 Day Mean        30 JUL 110
V. Geomagnetic A Indices
OBSERVED AFR/AP 29 JUL  008/006
ESTIMATED AFR/AP 30 JUL  006/010
PREDICTED AFR/AP 31 JUL-02 AUG  010/010-010/010-005/010
VI. Geomagnetic Activity Probabilities 31 JUL to 02 AUG
A. Middle Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%

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