:Product: Weekly Highlights and Forecasts
:Issued: 2017 May 01 0108 UTC
#
Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
#
Product description and SWPC contact on the Web
# http://www.swpc.noaa.gov/weekly.html
#
#
Weekly Highlights and Forecasts
#
Highlights of Solar and Geomagnetic
Activity 24 - 30 April 2017
Solar activity was at very low levels. The
most significant event of
the period was observed early on 30 April at 0057
UTC when Region
2653 (S09, L=031, class/area, Hax/110 on 23 Apr) produced
a
long-duration B3 flare with an associated slow-moving CME off the
WSW
limb, first visible in LASCO C2 imagery at 30/0336 UTC. Analysis
and
subsequent WSA-Enlil model output suggested a possible weak,
glancing blow at
Earth beginning late on 03 May.
No proton events were observed at
geosynchronous orbit.
The greater than 2 MeV electron flux at
geosynchronous orbit reached
very high levels on 24-28 April and high levels
on 29-30 April. A
maximum flux of 66,472 pfu was observed at 26/1735 UTC.
Geomagnetic field activity was at quiet to active levels on
24-25
April under the waning influence of a negative polarity CH
HSS.
Predominately quiet levels were observed from 26-30 April.
FORECAST OF SOLAR AND GEOMAGNETIC ACTIVITY 01 MAY - 27 MAY
2017
Solar activity is expected to be very low with a slight chance
for
C-class flare activity throughout the outlook period.
No proton
events are expected at geosynchronous orbit.
The greater than 2 MeV
electron flux at geosynchronous orbit is
likely to reach high levels on
01-02, 04-06, 17-20 and 24-27 May
with very high levels likely on 21-23 May.
Normal to moderate flux
levels are expected for the remainder of the period.
Geomagnetic field activity is likely to reach G2
(Moderate)
geomagnetic storm levels on 19-20 May with G1 (Minor)
geomagnetic
storm levels likely on 17-18 May due to the influence of
multiple,
recurrent CH HSSs. Active conditions are likely on 01, 16 and 21
May
due to CH HSS influence with additional active conditions possible
on
03-04 May due to CME effects. Quiet to unsettled levels are
expected for the
remainder of the period.
:Product: 27-day Space Weather Outlook Table
27DO.txt
:Issued: 2017 May 01 0108 UTC
# Prepared by the US Dept. of
Commerce, NOAA, Space Weather Prediction Center
# Product description and
SWPC contact on the Web
# http://www.swpc.noaa.gov/wwire.html
#
#
27-day Space Weather Outlook Table
# Issued
2017-05-01
#
# UTC Radio Flux Planetary Largest
#
Date 10.7 cm A Index Kp Index
2017 May 01 77
12 4
2017 May 02 75 8 3
2017 May 03
75 12 4
2017 May 04 73 12 4
2017
May 05 75 8 3
2017 May 06 75
8 3
2017 May 07 75 5 2
2017 May 08
75 8 3
2017 May 09 75 5 2
2017
May 10 75 5 2
2017 May 11 75
5 2
2017 May 12 75 5 2
2017 May 13
75 5 2
2017 May 14 75 5 2
2017
May 15 80 8 3
2017 May 16 80
15 4
2017 May 17 80 30 5
2017 May 18
80 25 5
2017 May 19 85 45 6
2017
May 20 85 50 6
2017 May 21 85
15 4
2017 May 22 80 10 3
2017 May 23
80 8 3
2017 May 24 77 5 2
2017
May 25 77 5 2
2017 May 26 77
5 2
2017 May 27 77 5 2
(SWPC via
DXLD)
