Routine Space Environment Product (Daily)
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
000
FXXX12 KWNP 300031
DAYDIS

:Product: Forecast Discussion
:Issued: 2016 May 30 0030 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
#
#             Forecast Discussion
#
Solar Activity

.24 hr Summary...
Solar activity remained very low with only B-class flares observed.
Region 2548 (N14W78, Hsx/alpha) showed signs of decay in its trailer
spots but managed the largest flare of the period, a B7 flare at 29/0656
UTC. Region 2549 (S14E03, Cro/beta) exhibited decay and was relatively
inactive. No Earth-directed CMEs were observed.

.Forecast...
Solar activity is expected to be very low with a slight chance for
C-flares on days one through three (30 May-01 Jun) as Region 2548
rotates around the west limb.


Energetic Particle

.24 hr Summary...
The greater than 2 MeV electron flux was at normal to moderate levels.
The greater than 10 MeV proton flux continued at background values.

.Forecast...
The greater than 2 MeV electron flux is expected to be at normal to
moderate levels on days one through three (30 May-01 Jun). The greater
than 10 MeV proton flux is expected to remain at background values.


Solar Wind

.24 hr Summary...
The solar wind environment remained relatively steady through the
majority of the period. Solar wind speeds were elevated in the 450-500
km/s range to begin the period, then gradually decreased to speeds near
430 km/s by midday. Bt was between 3 and 7 nT for most of the summary
period while the Bz component was variable with a maximum southward
deviation of -5 nT. Conditions began to increase further at
approximately 29/1800 UTC indicating the possible first signs of another
negative polarity CH HSS. Solar wind speeds increased once again above
510 km/s and total field increased to 7 nT. The phi angle was negative
(towards) throughout the entire period.

.Forecast...
The solar wind environment is expected to be further enhanced due to the
influence of another negative-polarity CH HSS. Conditions are expected
to begin to recover on day two (31 May) and return to ambient levels on
day three (01 Jun).


Geospace

.24 hr Summary...
The geomagnetic field was quiet to unsettled.

.Forecast...
The geomagnetic field is expected to be unsettled to active on day one
(30 May) with an isolated minor storm period likely due to continued CH
HSS effects. Conditions are expected to decrease to quiet to active
levels on day two (31 May) as CH HSS effects begin to taper off. Mostly
quiet conditions are expected on day three (01 Jun).


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.