Viewing archive of Sunday, 19 July 2009
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 2009 Jul 19 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 200 Issued at 2200Z on 19 Jul 2009IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z Solar activity continues to be very low. No flares
occurred. The disk remains spotless, now for the eighth successive
day.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next 24 to 36 hours. The effects of a
high speed solar wind stream are due on July 21-22. Unsettled to
active conditions should prevail during that interval.
III. Event Probabilities 20 Jul to 22 Jul
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Jul 068 Predicted 20 Jul-22 Jul 067/067/067 90 Day Mean 19 Jul 069
V. Geomagnetic A Indices
Observed Afr/Ap 18 Jul 001/003 Estimated Afr/Ap 19 Jul 001/005 Predicted Afr/Ap 20 Jul-22 Jul 005/008-015/018-010/010
VI. Geomagnetic Activity Probabilities 20 Jul to 22 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 25% | 20% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 05% | 35% | 30% |
| Minor storm | 01% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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| Last M-flare | 2024/12/23 | M1.0 |
| Last geomagnetic storm | 2024/12/17 | Kp5+ (G1) |
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