Viewing archive of Sunday, 13 May 2007

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 2007 May 13 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 133 Issued at 2200Z on 13 May 2007

IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z

Solar activity was very low.
IB. Solar Activity Forecast
Solar activity is expected to be very low to low. C-class activity is possible in Region 955 (S09W35).
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet.
III. Event Probabilities 14 May to 16 May
Class M05%05%05%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       13 May 074
  Predicted   14 May-16 May  072/072/072
  90 Day Mean        13 May 074
V. Geomagnetic A Indices
  Observed Afr/Ap 12 May  002/003
  Estimated     Afr/Ap 13 May  003/005
  Predicted    Afr/Ap 14 May-16 May  005/005-005/008-005/005
VI. Geomagnetic Activity Probabilities 14 May to 16 May
A. Middle Latitudes
Active15%15%15%
Minor storm05%05%05%
Major-severe storm01%01%01%
B. High Latitudes
Active20%20%20%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

<< Go to daily overview page

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!

98%
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/06/10X1.55
Last M-flare2024/07/13M1.4
Last geomagnetic storm2024/06/28Kp8- (G4)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
June 2024164.2 -7.5
July 2024151.2 -13
Last 30 days152.5 +0.9

This day in history*

Solar flares
12004M9.71
22004M8.9
32004M7.77
42005M7.27
52005M4.59
DstG
11991-183G4
21982-178G5
31984-88G3
41961-77G4
52015-68G2
*since 1994

Social networks