Viewing archive of Tuesday, 2 November 2004
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 2004 Nov 02 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 307 Issued at 2200Z on 02 Nov 2004IA. Analysis of Solar Active Regions and Activity from 01-2100Z to 02-2100Z Solar activity was low. Today's activity consisted of a
few C-class events. The largest of these were a C6 at 0143 UTC from
Region 687 (N12W90+) and a C9 at 0947 UTC from Region 689 (N10W81).
Region 693 (S14W05) continues to be the largest group on the disk
but is magnetically simple and could only produce a low-level
C-flare. Region 696 (N08E47) is growing and also produced a
low-level C-flare.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. There is a chance for isolated M-class events from
Region 691 or from Region 693.
IIA. Geophysical Activity Summary 01-2100Z to 02-2100Z
The geomagnetic field was mostly quiet. Solar wind data do not
indicate the arrival of a shock or transient flow from the activity
of 30 October. There does appear to be a sector boundary crossing at
about 1800 UTC. Greater than 10 MeV proton fluxes stayed below event
level (10 PFU) but were elevated relative to normal background
levels during the past 24 hours.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be unsettled with a chance for some isolated active
periods during the next three days (03-05 November). Today's sector
boundary change is likely to be a prelude to a negative polarity
coronal hole stream which should result in an increase in
geomagnetic activity.
III. Event Probabilities 03 Nov to 05 Nov
| Class M | 45% | 45% | 45% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 02 Nov 133 Predicted 03 Nov-05 Nov 130/125/125 90 Day Mean 02 Nov 108
V. Geomagnetic A Indices
Observed Afr/Ap 01 Nov 004/005 Estimated Afr/Ap 02 Nov 005/007 Predicted Afr/Ap 03 Nov-05 Nov 012/015-012/015-012/015
VI. Geomagnetic Activity Probabilities 03 Nov to 05 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 35% | 35% | 35% |
| Minor storm | 20% | 20% | 20% |
| Major-severe storm | 05% | 05% | 05% |
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