Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 20 Jun 2007

By SpaceRef Editor
June 22, 2007
Filed under , , ,
Joint USAF/NOAA Report of Solar and Geophysical Activity 20 Jun 2007
http://images.spaceref.com/news/sun.3.jpg

Product: Report of Solar-Geophysical Activity
Issued: 2007 Jun 20 2200 UTC
Prepared jointly by the U.S. Dept. of Commerce, NOAA,
Space Environment Center and the U.S. Air Force.

Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 171 Issued at 2200Z on 20 Jun 2007

IA. Analysis of Solar Active Regions and Activity from 19/2100Z to 20/2100Z: Solar activity was very low. The visible disk remains spotless.

IB. Solar Activity Forecast: Solar activity is expected to remain very low.

IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z: The geomagnetic field was quiet. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels again today.

IIB. Geophysical Activity Forecast: The geomagnetic field is expected to range from unsettled to minor storm levels on 21-22 June, in response to a recurrent coronal hole high speed stream. Isolated major storm periods are possible at high latitudes. Conditions diminish to unsettled on 23 June.

III. Event Probabilities 21 Jun-23 Jun

  • Class M 01/01/01
  • Class X 01/01/01
  • Proton 01/01/01
  • PCAF Green

IV. Penticton 10.7 cm Flux

  • Observed 20 Jun 066
  • Predicted 21 Jun-23 Jun 068/068/070
  • 90 Day Mean 20 Jun 074

V. Geomagnetic A Indices

  • Observed Afr/Ap 19 Jun 005/007
  • Estimated Afr/Ap 20 Jun 006/010
  • Predicted Afr/Ap 21 Jun-23 Jun 015/020-010/015-008/010

VI. Geomagnetic Activity Probabilities 21 Jun-23 Jun

A. Middle Latitudes

  • Active 30/25/20
  • Minor storm 20/15/10
  • Major-severe storm 10/05/01

B. High Latitudes

  • Active 35/30/20
  • Minor storm 25/20/15
  • Major-severe storm 15/10/05

SpaceRef staff editor.