Viewing archive of Tuesday, 30 June 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 Jun 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 181 Issued at 2200Z on 30 JUN 1998IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z SOLAR ACTIVITY WAS LOW. REGION 8256 (S24E04) PRODUCED A
C3/1F AT 2241Z. REGION 8253 (N17W29) PRODUCED THE LARGEST EVENT IN
THE LAST 24 HOURS, A C5/1F AT 0148Z. BOTH THESE REGIONS HAVE SHOWN
SLIGHT DECAY IN THE PAST 24 HOURS. REGION 8260'S (S22E44) MODERATE
GROWTH RATE SLOWED CONSIDERABLY TODAY. IT IS NOW A 16 SPOT E-TYPE
GROUP WITH MODERATE MAGNETIC COMPLEXITY. NEW REGIONS 8263 (S19E67)
AND 8264 (N18E74) WERE NUMBERED TODAY BRINGING THE TOTAL NUMBER OF
SUNSPOT REGIONS TO NINE.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO REMAIN
LOW. REGIONS 8253 AND 8260 HAVE POTENTIAL FOR C-CLASS ACTIVITY WITH
A SLIGHT CHANCE OF M-CLASS.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
THE GEOMAGNETIC FIELD WAS QUIET
IIB. Geophysical Activity Forecast
THE GEOMAGNETIC FIELD IS
EXPECTED TO BECOME QUIET TO UNSETTLED.
III. Event Probabilities 01 JUL to 03 JUL
| Class M | 25% | 25% | 25% |
| Class X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 30 JUN 121 Predicted 01 JUL-03 JUL 124/126/126 90 Day Mean 30 JUN 108
V. Geomagnetic A Indices
OBSERVED AFR/AP 29 JUN 006/004 ESTIMATED AFR/AP 30 JUN 004/010 PREDICTED AFR/AP 01 JUL-03 JUL 010/012-010/012-010/012
VI. Geomagnetic Activity Probabilities 01 JUL to 03 JUL
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 05% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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