####018000820#### AXXX82 KWNP 150031 DAYOBS :Product: Summary of Space Weather Observations dayobs.txt :Issued: 2026 Jun 15 0030 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 # # Summary of Space Weather Observations # :Solar_Region_Summary: 2026 Jun 14 # Region Location Sunspot Characteristics # Helio Spot Spot Mag. # Num Lat.,CMD Long. Area Extent class count class 4463 N17W55 337 30 2 HSX 1 A 4464 S14W56 338 120 9 DAO 5 B 4465 N08W11 293 150 9 CAI 10 B 4468 N10E39 243 20 3 CRO 5 B ####018002120#### FXXX10 KWNP 150031 DAYTDF :Product: 3-Day Forecast :Issued: 2026 Jun 15 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 # # 3-Day Forecast # A. NOAA Geomagnetic Activity Observation and Forecast The greatest observed 3 hr Kp over the past 24 hours was 2 (below NOAA Scale levels). The greatest expected 3 hr Kp for Jun 15-Jun 17 2026 is 3.67 (below NOAA Scale levels). NOAA Kp index breakdown Jun 15-Jun 17 2026 Jun 15 Jun 16 Jun 17 00-03UT 2.67 2.67 2.00 03-06UT 3.00 3.67 2.67 06-09UT 2.67 3.67 3.00 09-12UT 1.67 2.67 2.67 12-15UT 1.67 1.67 2.00 15-18UT 1.00 1.67 2.33 18-21UT 1.67 1.67 1.67 21-00UT 1.67 2.00 2.67 Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast. B. NOAA Solar Radiation Activity Observation and Forecast Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was below S-scale storm level thresholds. Solar Radiation Storm Forecast for Jun 15-Jun 17 2026 Jun 15 Jun 16 Jun 17 S1 or greater 1% 1% 1% Rationale: No S1 (Minor) or greater solar radiation storms are expected. No significant active region activity favorable for radiation storm production is forecast. C. NOAA Radio Blackout Activity and Forecast No radio blackouts were observed over the past 24 hours. Radio Blackout Forecast for Jun 15-Jun 17 2026 Jun 15 Jun 16 Jun 17 R1-R2 15% 15% 15% R3 or greater 1% 1% 1% Rationale: There is a slight chance for R1-R2 (Minor-Moderate) radio blackouts on 15-17 Jun. ####018002324#### FXXX12 KWNP 150031 DAYDIS :Product: Forecast Discussion :Issued: 2026 Jun 15 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 was at low levels. Only low-level C-class activity was observed. Region 4465 (N08W11, Cai/beta) exhibited some minor growth. The three other spotted active regions were either mostly stable or in gradual decay. No Earth-directed CMEs were observed in available coronagraph imagery. .Forecast... Solar activity is expected to remain at low levels over 15-17 Jun, with a slight chance for M-class (R1-R2/Minor-Moderate) flares. Energetic Particle .24 hr Summary... The greater than 2 MeV electron flux reached high levels, with peak values observed at 1,581 pfu. The greater than 10 MeV proton flux remained at background levels. .Forecast... The greater than 2 MeV electron flux is likely to reach high levels on 15-17 Jun. The greater than 10 MeV proton flux is expected to continue at background levels through 16 Jun. Solar Wind .24 hr Summary... Solar wind parameters reflected continued but, waning influence from a negative polarity coronal hole. Total magnetic field strength averaged ~5 nT. No significant periods of southward Bz were observed. Solar wind speeds gradually declined from ~525 km/s to ~440 km/s over the past 24 hours. Phi angle was predominantly oriented in the negative solar sector. .Forecast... The solar wind environment is expected to remain mildly enhanced over 15 Jun under waning -CH HSS influences. An additional enhancement is likely on 16-17 Jun due to the anticipated glancing-blow arrival of a CME that left the Sun on 12 Jun. Geospace .24 hr Summary... The geomagnetic field was at quiet levels. .Forecast... The geomagnetic field is expected to be at quiet to unsettled levels on 15 Jun as -CH HSS influences slowly diminish. Periods of active conditions are likely on 16 Jun due to the anticipated glancing-blow arrival of a CME that left the Sun on 12 Jun. Quiet to unsettled levels are expected on 17 Jun.