Viewing archive of Wednesday, 20 September 2000

Solar activity report

Report of Solar-Geophysical Activity 2000 Sep 20 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Report of Solar and Geophysical Activity

SDF Number 264 Issued at 2200Z on 20 SEP 2000

IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z

IB. Solar Activity Forecast

IIB. Geophysical Activity Forecast

III. Event Probabilities 21 SEP to 23 SEP

Class M	70%	70%	70%
Class X	25%	25%	25%
Proton	05%	05%	05%
PCAF	GREEN

IV. Penticton 10.7 cm Flux

  Observed       20 SEP 211
  Predicted   21 SEP-23 SEP  215/215/220
  90 Day Mean        20 SEP 177

V. Geomagnetic A Indices

OBSERVED AFR/AP 19 SEP  015/027
ESTIMATED AFR/AP 20 SEP  010/015
PREDICTED AFR/AP 21 SEP-23 SEP  010/012-010/010-010/010

VI. Geomagnetic Activity Probabilities 21 SEP to 23 SEP

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

B. High Latitudes
Active	30%	25%	25%
Minor storm	10%	10%	10%
Major-severe storm	05%	01%	01%

COMMENTS: EFFECTIVE 2 OCT 2000, SEC WILL ISSUE ITS TEXT PRODUCTS IN MIXED CASE VS. ALL UPPER CASE. THIS CHANGE WILL BE VISIBLE ON ALL SEC PRODUCT DELIVERY SYSTEMS EXCEPT FOR TELETYPE CIRCUITS. ONLY THE CASE OF THE TEXT IN EACH PRODUCT WILL CHANGE, NOT THE FORMAT OR SPACING WITHIN THE PRODUCT. FOR DETAILS SEE OUR WEB SITE AT SEC.NOAA.GOV/MIXEDCASE.HTML

All times in UTC

<< Go to daily overview page