Viewing archive of Wednesday, 29 July 1998

Solar activity report

Report of Solar-Geophysical Activity 1998 Jul 29 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 210 Issued at 2200Z on 29 JUL 1998

IA. Analysis of Solar Active Regions and Activity from 28-2100Z to 29-2100Z

SOLAR ACTIVITY WAS VERY LOW. ONLY A FEW X-RAY FLARES OCCURRED DURING THE PAST DAY; THE LARGEST WAS A B7 AT 28/2137Z. NO OPTICAL FLARES WERE REPORTED. REGIONS 8280 (S23W24) AND 8282 (N32W27) REMAIN THE LARGEST SUNSPOT GROUPS ON THE VISIBLE DISK. NEITHER REGION HAS PRODUCED SIGNIFICANT ACTIVITY. NEW REGION 8287 (N17W55) WAS NUMBERED. ANOTHER NEW SUNSPOT GROUP, AS YET UNNUMBERED, APPEARS TO BE ROUNDING THE EAST LIMB NEAR SE 29.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE VERY LOW TO LOW. REGIONS 8280 AND 8282 ARE THE MOST LIKELY SOURCE OF FLARES. IIA. GEOPHYSICAL ACTIVITY SUMMARY FROM 28/2100Z TO 29/2100Z: THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED.
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS EXPECTED TO BE QUIET TO UNSETTLED.
III. Event Probabilities 30 JUL to 01 AUG
Class M15%15%15%
Class X01%01%01%
Proton01%01%01%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observed       29 JUL 120
  Predicted   30 JUL-01 AUG  120/120/118
  90 Day Mean        29 JUL 110
V. Geomagnetic A Indices
OBSERVED AFR/AP 28 JUL  005/006
ESTIMATED AFR/AP 29 JUL  006/010
PREDICTED AFR/AP 30 JUL-01 AUG  010/015-010/015-010/012
VI. Geomagnetic Activity Probabilities 30 JUL to 01 AUG
A. Middle Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%05%05%
B. High Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%05%05%

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