Status Report

Joint USAF/NOAA Report of Solar and Geophysical Activity 30 Jun 2009

By SpaceRef Editor
July 1, 2009
Filed under , , ,

:Product: Report of Solar-Geophysical Activity
:Issued: 2009 Jun 30 2200 UTC
# Prepared jointly by the U.S. Dept. of Commerce, NOAA,
# Space Weather Prediction Center and the U.S. Air Force.

Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 181 Issued at 2200Z on 30 Jun 2009
IA. Analysis of Solar Active Regions and Activity from 29/2100Z
to 30/2100Z: Solar activity was very low. No flares were detected.
The visible disk was spotless.
IB. Solar Activity Forecast: Solar activity is expected to be very
IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z:
Geomagnetic field activity was at mostly quiet levels. ACE solar wind
observations indicated velocities gradually decreased from 551
km/sec to 449 km/sec during the period. IMF Bz varied from +4 to -4
nT during the period.
IIB. Geophysical Activity Forecast: Geomagnetic field activity is
expected to be at quiet to unsettled levels during days 1 – 2 (01 –
02 July). Field activity is expected to decrease to quiet levels on
day 3 (03 July).
III. Event Probabilities 01 Jul-03 Jul
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 30 Jun 068
Predicted 01 Jul-03 Jul 068/068/068
90 Day Mean 30 Jun 070
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jun 007/010
Estimated Afr/Ap 30 Jun 007/008
Predicted Afr/Ap 01 Jul-03 Jul 007/008-007/008-005/005
VI. Geomagnetic Activity Probabilities 01 Jul-03 Jul
A. Middle Latitudes
Active 10/10/01
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/05
Minor storm 05/05/01
Major-severe storm 01/01/01

SpaceRef staff editor.