Viewing archive of Tuesday, 24 April 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 Apr 24 2203 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 114 Issued at 2200Z on 24 Apr 2007

IA. Analysis of Solar Active Regions and Activity from 23-2100Z to 24-2100Z

Solar activity was very low. The background solar x-ray flux increased from below A-class to approximately A6 during the past 24 hours and a bright emerging flux region has rotated onto the east limb. However, no sunspots are visible in this region yet.
IB. Solar Activity Forecast
Solar activity is expected to be very low. There is a slight chance for a C-class flare from the east limb.
IIA. Geophysical Activity Summary 23-2100Z to 24-2100Z
The geomagnetic field was quiet. Solar wind speed remains slightly elevated at approximately 440 km/s.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet for the next three days (25 - 27 April).
III. Event Probabilities 25 Apr to 27 Apr
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       24 Apr 073
  Predicted   25 Apr-27 Apr  075/075/075
  90 Day Mean        24 Apr 074
V. Geomagnetic A Indices
  Observed Afr/Ap 23 Apr  010/018
  Estimated     Afr/Ap 24 Apr  003/005
  Predicted    Afr/Ap 25 Apr-27 Apr  005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 25 Apr to 27 Apr
A. Middle Latitudes
Active05%05%05%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active10%10%10%
Minor storm05%05%05%
Major-severe storm01%01%01%

All times in UTC

<< 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!

SpaceWeatherLive Pro
Support SpaceWeatherLive with our merchandise
Check out our merchandise

Latest alerts

Get instant alerts!

Space weather facts

Last X-flare2024/12/08X2.2
Last M-flare2024/12/23M8.9
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024106.6 -45.9
Last 30 days116.1 -41.8

This day in history*

Solar flares
12024M8.9
22015M6.75
31998M3.34
42013M2.36
52013M1.97
DstG
12002-67
22000-62G2
31989-60
42014-57
51982-53G1
*since 1994

Social networks