:Product: Weekly Highlights and Forecasts
:Issued: 2019 May 06 0135 UTC
#
Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
Product description and SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
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#
Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic
Activity
29 April - 05 May 2019
Solar activity was at very low to low
levels. New Region 2740 (N08,
L=307, class/area Dho/280 on 05 May) produced a
pair of C-class
flares, the largest a C2/Sf observed at 04/2243 UTC.
No
Earth-directed CMEs were observed in available coronograph imagery.
No proton events were observed at geosynchronous orbit.
The
greater than 2 MeV electron flux at geosynchronous orbit was at
normal levels
on 29 Apr - 01 May and reached high levels on 02-05
May. The maximum electron
flux was 6,160 pfu observed at 03/1930
UTC.
Geomagnetic field
activity ranged from quiet to active levels
through the period. Quiet levels
were observed on 29-30 Apr under a
nominal solar wind regime. Late on 01 May
through midday on 02 May,
unsettled to active levels were observed under an
enhanced solar
wind environment due to influence from a negative polarity CH
HSS.
During this time frame, wind speeds peaked at near 565 km/s,
total
field reached 11 nT, while the Bz component reached a
maximum
southward extent of -10 nT. On 03-04 May, field conditions were
at
quiet to unsettled levels as negative polarity CH HSS
influence
continued. By 05 May, quiet conditions were observed under waning
CH
HSS influence.
Forecast of Solar and Geomagnetic Activity
06
May - 01 June 2019
Solar activity is expected to be at very low levels,
with low levels
likely through 20 May due to activity from Region 2740 and
the
return of old Region 2739 (N06, L=266). Very low conditions
are
anticipated after 20 May.
No proton events are expected at
geosynchronous orbit.
The greater than 2 MeV electron flux at
geosynchronous orbit is
expected to be at moderate to high levels on 06-12
May, and again on
29 May - 01 Jun, due to CH HSS influence. Normal to
moderate levels
are expected on 13-28 May.
Geomagnetic field activity
is expected to range from quiet to active
levels. Unsettled to active
conditions are expected on 06-07 May and
again on 28-31 May. Both
enhancements in geomagnetic activity are
due to recurrent, negativity
polarity CH HSSs. The remainder of the
outlook period is expected to be at
quiet levels.
:Product: 27-day Space Weather Outlook Table
27DO.txt
:Issued: 2019 May 06 0135 UTC
# Prepared by the US Dept. of
Commerce, NOAA, Space Weather Prediction Center
# Product description and
SWPC contact on the Web
# https://www.swpc.noaa.gov/content/subscription-services
#
#
27-day Space Weather Outlook Table
# Issued
2019-05-06
#
# UTC Radio Flux Planetary Largest
#
Date 10.7 cm A Index Kp Index
2019 May 06 76
12 4
2019 May 07 76 14 4
2019 May 08
76 8 3
2019 May 09 76 8 3
2019
May 10 76 8 3
2019 May 11 76
5 2
2019 May 12 76 5 2
2019 May 13
76 5 2
2019 May 14 76 5 2
2019
May 15 76 5 2
2019 May 16 76
5 2
2019 May 17 76 5 2
2019 May 18
72 5 2
2019 May 19 72 5 2
2019
May 20 72 8 3
2019 May 21 68
5 2
2019 May 22 68 5 2
2019 May 23
67 5 2
2019 May 24 67 5 2
2019
May 25 67 5 2
2019 May 26 67
5 2
2019 May 27 69 5 2
2019 May 28
68 10 3
2019 May 29 69 12 4
2019
May 30 70 8 3
2019 May 31 72
10 3
2019 Jun 01 75 5 2
(SWPC via
DXLD)
