Viewing archive of Wednesday, 25 March 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 Mar 25 2201 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 084 Issued at 2200Z on 25 Mar 2009

IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z

Solar activity was very low. No flares were observed and the disk is spotless.
IB. Solar Activity Forecast
Solar activity is expected to be very low.
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic field was quiet to unsettled with isolated active periods from 25/ 0000 to 0600. The increase in activity was due to a rise in solar wind speed and intermittent southward Bz.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled with isolated active periods possible on days one and two (26-27 March). Day three (28 March) is expected to be quiet.
III. Event Probabilities 26 Mar to 28 Mar
Class M01%01%01%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       25 Mar 069
  Predicted   26 Mar-28 Mar  070/070/072
  90 Day Mean        25 Mar 070
V. Geomagnetic A Indices
  Observed Afr/Ap 24 Mar  006/008
  Estimated     Afr/Ap 25 Mar  007/010
  Predicted    Afr/Ap 26 Mar-28 Mar  007/010-007/008-005/005
VI. Geomagnetic Activity Probabilities 26 Mar to 28 Mar
A. Middle Latitudes
Active10%10%05%
Minor storm01%01%01%
Major-severe storm01%01%01%
B. High Latitudes
Active20%15%10%
Minor storm05%05%01%
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-flare2024/12/25M4.9
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024115.2 -37.3
Last 30 days120.1 -38.2

This day in history*

Solar flares
12011M5.77
22024M4.9
32024M2.8
41998M1.83
52001M1.76
DstG
11988-85
21998-57
31978-57G2
42014-49
52002-39
*since 1994

Social networks