Viewing archive of Sunday, 19 December 2010

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 2010 Dec 19 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 353 Issued at 2200Z on 19 Dec 2010

IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z

Solar activity was very low. The visible disk was spotless.
IB. Solar Activity Forecast
Solar activity is expected to remain 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 to unsettled on day one (20 December) as a coronal hole high speed stream becomes geoeffective. Quiet conditions are expected to prevail on days two and three (21-22 December) as the coronal hole high speed stream departs.
III. Event Probabilities 20 Dec to 22 Dec
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       19 Dec 081
  Predicted   20 Dec-22 Dec  078/078/078
  90 Day Mean        19 Dec 083
V. Geomagnetic A Indices
  Observed Afr/Ap 18 Dec  002/002
  Estimated     Afr/Ap 19 Dec  002/005
  Predicted    Afr/Ap 20 Dec-22 Dec  007/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 20 Dec to 22 Dec
A. Middle Latitudes
Active10%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active15%10%05%
Minor storm05%01%01%
Major-severe storm01%01%01%

<< Go to daily overview page

Latest news

Support 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!

61%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/05/14X1.2
Last M-flare2024/05/14M2.5
Last geomagnetic storm2024/05/13Kp6 (G2)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
April 2024136.5 +31.6
May 2024149.2 +12.7
Last 30 days177.1 +82.7

This day in history*

Solar flares
12013X4.64
22024X1.6
32024X1.2
42024M2.5
52000M1.56
ApG
1197380G4
2196950G3
3193840G2
4201932G2
5195838G2
*since 1994

Social networks