Joint USAF/NOAA Report of Solar and Geophysical Activity 16 Jun 2002
:Product: Report of Solar-Geophysical Activity
:Issued: 2002 Jun 16 2210 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 167 Issued at 2200Z on 16 Jun 2002
IA. Analysis of Solar Active Regions and Activity from 15/2100Z
to 16/2100Z: Solar activity was low. The most notable event of the
period was a long duration C1.0 flare at 16/0814 UTC. There were no
optical reports associated with this event, but a CME was evident in
LASCO imagery just following the flare, from a presumed source
behind the northeast limb, near N35. Active prominences have been
visible in H-alpha imagery in this area for the past 24 hours.
Other activity included an optically uncorrelated C1.4 flare at
16/0332 UTC. B-class activity was observed in Region 9991 (S21W47)
and Region 3 (N00E49). New Region 5 (N13E74) rotated into view and
was numbered today.
IB. Solar Activity Forecast: Solar activity is expected to remain
mostly low for the next three days.
IIA. Geophysical Activity Summary 15/2100Z to 16/2100Z:
The geomagnetic field was quiet to unsettled.
IIB. Geophysical Activity Forecast: The geomagnetic field is
expected to persist at quiet to unsettled levels for the next three
days.
III. Event Probabilities 17 Jun-19 Jun
Class M 20/25/25
Class X 01/01/01
Proton 01/01/01
PCAF green
IV. Penticton 10.7 cm Flux
Observed 16 Jun 137
Predicted 17 Jun-19 Jun 140/145/145
90 Day Mean 16 Jun 178
V. Geomagnetic A Indices
Observed Afr/Ap 15 Jun 004/007
Estimated Afr/Ap 16 Jun 008/010
Predicted Afr/Ap 17 Jun-19 Jun 005/008-005/008-005/008
VI. Geomagnetic Activity Probabilities 17 Jun-19 Jun
A. Middle Latitudes
Active 10/10/10
Minor storm 01/01/01
Major-severe storm 01/01/01
B. High Latitudes
Active 15/15/15
Minor storm 05/05/05
Major-severe storm 01/01/01PLAIN
This message is for users of the NOAA/SEC Space
Weather Operations sunspot region numbers. As you
may have noticed, we are steadily approaching
region number 10000. The plan for Space Weather
operations is to go through the sequence of Region
numbers as 9998, 9999, 0000, 0001, and so on. SEC’s
product text discussions of the active regions
will ignore the leading zeroes (for example, we
will say ‘Region number 5’ rather than Region
number ‘0005’). However, the Geoalert product, the
Region Report product, as well as the USAF and IUWDS
data exchange codes will preserve the 4 digit format.
The necessity of using four digits is for operational
purposes only. For historical purposes all regions
beyond Region 9999 will be understood to be in a
series of regions numbers 10000 and higher.
