Viewing archive of Wednesday, 18 November 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 Nov 18 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 322 Issued at 2200Z on 18 Nov 2009IA. Analysis of Solar Active Regions and Activity from 17-2100Z to 18-2100Z Solar activity has been at very low levels for the past
24 hours. Two regions were numbered today. Region 1032 (N17E20) and
Region 1033 (N21E47) were both magnetically classified as Beta
groups.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low to low levels. With the emergence of Regions 1032 and 1033,
there is a slight chance for a C-class flare.
IIA. Geophysical Activity Summary 17-2100Z to 18-2100Z
The geomagnetic field has been mostly quiet for the past 24 hours. An
isolated unsettled period at mid-latitudes occurred between
18/0600-0900Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to remain at quiet levels for day one (19 November).
Unsettled, with isolated active conditions, are expected on day two
and three (20-21 November) due to a recurrent coronal hole
high-speed stream.
III. Event Probabilities 19 Nov to 21 Nov
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 18 Nov ??? Predicted 19 Nov-21 Nov 079/080/080 90 Day Mean 18 Nov 072
V. Geomagnetic A Indices
Observed Afr/Ap 17 Nov 000/001 Estimated Afr/Ap 18 Nov 002/003 Predicted Afr/Ap 19 Nov-21 Nov 007/007-010/011-015/015
VI. Geomagnetic Activity Probabilities 19 Nov to 21 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 20% | 30% |
| Minor storm | 05% | 10% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 20% | 30% |
| Minor storm | 05% | 10% | 15% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
Latest news
Thursday, 21 November 2024
Major far side eruption, S1 radiation storm
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Latest forum messages
Filaments and prominences 526AR 13901 110AR 13903 1Incoming & Unnumbered Active Regions 1246Sunspot Latitudes at or near Solar Maximum 76
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 142.7 -23.8 |
| Last 30 days | 156.1 +4.7 |