Viewing archive of Saturday, 17 May 2003

Solar activity report

Report of Solar-Geophysical Activity 2003 May 17 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 137 Issued at 2200Z on 17 May 2003

IA. Analysis of Solar Active Regions and Activity from 16-2100Z to 17-2100Z

IB. Solar Activity Forecast

IIA. Geophysical Activity Summary 16-2100Z to 17-2100Z

IIB. Geophysical Activity Forecast

III. Event Probabilities 18 May to 20 May

Class M	05%	05%	10%
Class X	01%	01%	01%
Proton	01%	01%	01%
PCAF	green

IV. Penticton 10.7 cm Flux

  Observed       17 May 102
  Predicted   18 May-20 May  110/120/125
  90 Day Mean        17 May 124

V. Geomagnetic A Indices

  Observed Afr/Ap 16 May  009/009
  Estimated     Afr/Ap 17 May  010/012
  Predicted    Afr/Ap 18 May-20 May  010/012-015/020-010/015

VI. Geomagnetic Activity Probabilities 18 May to 20 May

A. Middle Latitudes
Active	20%	20%	30%
Minor storm	10%	15%	10%
Major-severe storm	01%	05%	01%

B. High Latitudes
Active	35%	35%	35%
Minor storm	15%	20%	15%
Major-severe storm	05%	05%	05%

VII. Comments The GOES 10 energetic proton detectors are showing intermittent, high noise levels in the higher energy proton channels (greater than about 80 MeV). This problem was first noticed in data taken April 26, 2003. To ensure continued operational monitoring of important energetic particle data, it is necessary to reassign primary/secondary designations for the GOES Space Environment Monitor (SEM) detectors. As of 1500 UT on May 15, GOES-8 became the primary satellite for protons. GOES 12 will be the primary satellite for magnetometer, X-ray, and electron measurements. GOES 10 will be the secondary satellite for all SEM sensors - magnetometer, X-ray sensor, and energetic particle sensor. This short-term solution (approximately 2 - 3 months) will be in place until we define and implement a permanent fix. A more detailed explanation can be found at: http://www.sec.noaa.gov/GOES.html.

All times in UTC

<< Go to daily overview page