Viewing archive of Saturday, 24 June 2000
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 2000 Jun 24 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 176 Issued at 2200Z on 24 JUN 2000IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z SOLAR ACTIVITY DECREASED TO LOW LEVELS. REGION 9042
(N22W89) PRODUCED A C7/SF FLARE EARLY IN THE PERIOD, BUT SHOWED NO
SIGNIFICANT CHANGES AS IT BEGAN TO CROSS THE WEST LIMB. REGION 9046
(N21W48) CONTINUED TO SLOWLY DECAY AND PRODUCED A SINGLE SUBFLARE.
MINOR GROWTH WAS OBSERVED IN REGIONS 9049 (S36W34), 9054 (N12E11),
AND 9058 (S14W29). THE REMAINING REGIONS WERE STABLE AND
SIMPLY-STRUCTURED. NEW REGIONS 9060 (S34E59) AND 9061 (S14E74) WERE
NUMBERED.
IB. Solar Activity Forecast
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. ISOLATED C-CLASS SUBFLARES ARE EXPECTED. THERE WILL
ALSO BE A SMALL CHANCE FOR AN ISOLATED M-CLASS FLARE.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
GEOMAGNETIC FIELD ACTIVITY RANGED FROM QUIET TO MINOR STORM LEVELS
WITH STORM LEVELS LIMITED TO THE HIGH LATITUDES. FIELD ACTIVITY
DECREASED TO QUIET TO UNSETTLED LEVELS AFTER 24/0900Z.
IIB. Geophysical Activity Forecast
GEOMAGNETIC FIELD ACTIVITY IS
EXPECTED TO BE AT UNSETTLED TO MINOR STORM LEVELS DURING 25 - 26
JUNE. ACTIVITY IS EXPECTED TO DECREASE TO UNSETTLED LEVELS ON THE
FINAL DAY OF THE FORECAST PERIOD. THE GREATER THAN 2 MEV ELECTRON
FLUX AT GEOSYNCHRONOUS ORBIT IS EXPECTED TO INCREASE TO MODERATE TO
HIGH LEVELS LATE IN THE FORECAST PERIOD.
III. Event Probabilities 25 JUN to 27 JUN
| Class M | 30% | 25% | 25% |
| Class X | 10% | 05% | 05% |
| Proton | 05% | 01% | 01% |
| PCAF | GREEN | ||
IV. Penticton 10.7 cm Flux
Observed 24 JUN 168 Predicted 25 JUN-27 JUN 160/155/155 90 Day Mean 24 JUN 185
V. Geomagnetic A Indices
OBSERVED AFR/AP 23 JUN 020/023 ESTIMATED AFR/AP 24 JUN 015/020 PREDICTED AFR/AP 25 JUN-27 JUN 020/025-020/030-012/015
VI. Geomagnetic Activity Probabilities 25 JUN to 27 JUN
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 30% |
| Minor storm | 15% | 15% | 10% |
| Major-severe storm | 05% | 05% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 40% | 40% | 30% |
| Minor storm | 20% | 20% | 15% |
| Major-severe storm | 05% | 05% | 01% |
All times in UTC
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