Viewing archive of Tuesday, 27 August 2002

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 2002 Aug 27 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 239 Issued at 2200Z on 27 Aug 2002

IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z

Solar activity was low. Only a few C-class X-ray flares occurred. Regions 83 (S18W71), 85 (S08W37), and 87 (S08E06) remain the most interesting sunspot groups on the visible disk. New Regions 91 (N06E37) and 92 (S19E04) were numbered.
IB. Solar Activity Forecast
Solar activity is expected to be low to moderate. A low-level M-class flare is possible in any of Regions 83, 85, or 87.
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
The geomagnetic field was quiet to active.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected to be quiet to unsettled.
III. Event Probabilities 28 Aug to 30 Aug
Class M30%30%30%
Class X01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observed       27 Aug 161
  Predicted   28 Aug-30 Aug  155/150/145
  90 Day Mean        27 Aug 169
V. Geomagnetic A Indices
  Observed Afr/Ap 26 Aug  011/018
  Estimated     Afr/Ap 27 Aug  010/012
  Predicted    Afr/Ap 28 Aug-30 Aug  008/008-008/008-008/008
VI. Geomagnetic Activity Probabilities 28 Aug to 30 Aug
A. Middle Latitudes
Active20%20%20%
Minor storm10%10%10%
Major-severe storm01%01%01%
B. High Latitudes
Active30%30%30%
Minor storm15%15%15%
Major-severe storm05%05%05%

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-flare2024/12/21M1.9
Last geomagnetic storm2024/12/17Kp5+ (G1)
Spotless days
Last spotless day2022/06/08
Monthly mean Sunspot Number
November 2024152.5 -13.9
December 2024100.9 -51.6
Last 30 days116.1 -38.9

This day in history*

Solar flares
12023M4.2
22015M4.07
32024M1.9
42014M1.79
51999M1.61
DstG
12015-159G3
22002-75G2
32001-67
41980-64G1
51982-64G1
*since 1994

Social networks