Space Weather Forecast Discussion
| Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center |
| Issued: 2023 May 30 0030 UTC |
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| Solar activity was low. Regions 3310 (S20W82, Hax/alpha) and 3315
(S16W34, Ekc, beta-gamma) produced the largest flares of the period, a
C6.1 and C6.5 respectively. Regions 3317 (N26W41, Dao/beta) and 3318
(N25W33, Dao/beta) both underwent growth with 3318s leading spot
appearing to separate towards 3317. The other numbered sunspot groups
were stable or in decay. No Earth-directed CMEs were detected. |
| Solar activity is expected to be low with a chance for M-class flares
through 01 Jun. |
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| The greater than 2 MeV electron flux was normal to moderate and the
greater than 10 MeV proton flux was at background levels. |
| The greater than 2 MeV electron flux is expected to reach high levels on
30-31 May. There is a slight chance for a greater than 10 MeV proton
event reaching S1/Minor levels through 01 Jun. |
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| Nominal solar wind conditions continued through the day. Solar wind
speeds ranged between 360-460 km/s, total field strength was between 3-6
nT, and the Bz component was unremarkable. Phi was negative. |
| Solar wind parameters are expected to be enhanced on 30 May due
to negative polarity CH HSS influences. A gradual return to nominal
conditions is expected on 31 May, continuing through 01 Jun. |
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| The geomagnetic field was at quiet levels. |
| The geomagnetic field is expected to be quiet to active on 30 May
followed by quiet to unsettled conditions on 31 May due to HSS
activity. A return to mostly quiet conditions is expected on 01 Jun. |
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