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
FXXX12 KWNP 301231

:Product: Forecast Discussion
:Issued: 2016 May 30 1230 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Product description and SWPC contact on the Web
#             Forecast Discussion
Solar Activity

.24 hr Summary...
Solar activity reached low levels due to an impulsive C1 flare at
30/0737 UTC from newly numbered Region 2550 (N15W25, Bxo/beta). Region
2548 (N14W84, Hsx/alpha) was stable and should be off of the visible
disk by the end of the summary period. Region 2549 (S14W03, Axx/alpha)
exhibited decay and was inactive. No Earth-directed CMEs were observed.

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.

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 enhanced due to the influences of a
negative polarity CH HSS. Solar wind speeds gradually increased from 420
km/s to speeds near 500 km/s by periods end. Bt decreased from 8 nT to
4 nT while the Bz component was variable with a maximum southward
deviation of -5 nT. The phi angle was negative throughout the reporting

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).


.24 hr Summary...
The geomagnetic field was mostly quiet to unsettled with an isolated
period (30/00-03 UTC) of active levels.

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