Viewing archive of Monday, 28 February 2011

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 2011 Feb 28 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 059 Issued at 2200Z on 28 Feb 2011

IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z

Solar activity was moderate during the past 24 hours. Region 1164 (N26E33) produced a C2/Sf flare associated with a Type II Sweep and an M1 event at 28/1252Z.
IB. Solar Activity Forecast
Solar activity is expected to be low for the next three days (01-03 March). A chance for M-class activity exists from Region 1164.
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic field was quiet during the past 24 hours.
IIB. Geophysical Activity Forecast
Quiet to unsettled conditions are expected for the next three days (01-03 March) due to the effects of a recurrent coronal hole high speed stream.
III. Event Probabilities 01 Mar to 03 Mar
Class M35%35%35%
Class X01%01%01%
Proton01%01%01%
PCAFGreen
IV. Penticton 10.7 cm Flux
  Observed       28 Feb 096
  Predicted   01 Mar-03 Mar  095/095/098
  90 Day Mean        28 Feb 087
V. Geomagnetic A Indices
  Observed Afr/Ap 27 Feb  001/002
  Estimated     Afr/Ap 28 Feb  002/005
  Predicted    Afr/Ap 01 Mar-03 Mar  008/008-008/010-012/012
VI. Geomagnetic Activity Probabilities 01 Mar to 03 Mar
A. Middle Latitudes
Active15%15%20%
Minor storm05%05%10%
Major-severe storm01%01%01%
B. High Latitudes
Active25%25%30%
Minor storm10%10%15%
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