Viewing archive of Friday, 16 May 2008
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 2008 May 16 2203 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 137 Issued at 2200Z on 16 May 2008IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z Solar activity was at very low levels. New regions 994
(S11E04), 995 (N12E22), and 996 (N13E59) were numbered today.
Regions 994 and 995 are simple A-type groups with a single spot.
Region 996 is a B-type group with a beta magnetic configuration.
IB. Solar Activity Forecast
Solar activity is expected to remain
at very low levels.
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
The geomagnetic field was at quiet levels.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet levels for days one and two of the forecast
period (17 and 18 May). Geomagnetic activity is expected to
increase to quiet to unsettled levels with a slight chance for
active conditions on day three (19 May), as a coronal hole high
speed stream rotates into a geoeffective position.
III. Event Probabilities 17 May to 19 May
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 16 May 072 Predicted 17 May-19 May 072/072/072 90 Day Mean 16 May 071
V. Geomagnetic A Indices
Observed Afr/Ap 15 May 002/004 Estimated Afr/Ap 16 May 003/005 Predicted Afr/Ap 17 May-19 May 005/005-005/005-010/012
VI. Geomagnetic Activity Probabilities 17 May to 19 May
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 20% |
| Minor storm | 05% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 25% |
| Minor storm | 05% | 05% | 15% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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