Status Report

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast 20 July 2014

By SpaceRef Editor
July 20, 2014
Filed under , , ,

Joint USAF/NOAA Solar Geophysical Activity Report and Forecast
SDF Number 201 Issued at 2200Z on 20 Jul 2014

IA. Analysis of Solar Active Regions and Activity from 19/2100Z to
20/2100Z: Solar activity has been at very low levels for the past 24
hours. There are currently 3 numbered sunspot regions on the disk.

IB. Solar Activity Forecast: Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (21 Jul,
22 Jul, 23 Jul).

IIA. Geophysical Activity Summary 19/2100Z to 20/2100Z: The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 290 km/s at

IIB. Geophysical Activity Forecast: The geomagnetic field is expected
to be at quiet to unsettled levels on days one and two (21 Jul, 22 Jul)
and quiet levels on day three (23 Jul).

III. Event probabilities 21 Jul-23 Jul
Class M 01/01/01
Class X 01/01/01
Proton 01/01/01
PCAF green

IV. Penticton 10.7 cm Flux
Observed 20 Jul 087
Predicted 21 Jul-23 Jul 090/090/100
90 Day Mean 20 Jul 131

V. Geomagnetic A Indices
Observed Afr/Ap 19 Jul 003/003
Estimated Afr/Ap 20 Jul 004/004
Predicted Afr/Ap 21 Jul-23 Jul 008/008-008/008-006/005

VI. Geomagnetic Activity Probabilities 21 Jul-23 Jul
A. Middle Latitudes
Active 15/15/10
Minor Storm 05/05/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor Storm 20/25/20
Major-severe storm 20/25/10

SpaceRef staff editor.