![National Oceanic and Atmospheric Administration](/build/images/header/noaa.d87e0251.png)
![National Weather Service](/build/images/header/nws.4e6585d8.png)
![United States Department of Commerce](/build/images/header/doc.b38ba91a.png)
Routine Space Environment Product Issued Weekly
Issued by NWS
Issued by NWS
Versions:
1
840 FXXX06 KWNP 220526 WEKHIL :Product: 7-day Space Weather Highlights :Issued: 2024 Jul 22 0507 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 # # 7-day Space Weather Highlights # Highlights of Solar and Geomagnetic Activity 15 - 21 July 2024 Solar activity was at moderate to high levels. High levels were observed on 16 and 17 Jul due to an X1.9/1B flare at 16/1326 UTC from Region 3738 (S09, L=213, class/area Fkc/1140 on 14 Jul) and an M5.0/2b flare at 17/0639 UTC from Region 3743 (S08, L=162, class/area Dai/220 on 13 Jul). The X1 flare had accompanying Type II (398 km/s) and Type IV radio bursts, a Castelli U radio signature, as well as a CME of the W limb that was not Earth-directed. Region 3753 (N12, L=170, class/area Dai/100 on 16 Jul) and 3744 (N16, L=144, class/area Dso/180 on 12 Jul) produced a pair of M1 flares at 16/2124 UTC and 16/2206 UTC. Two associated partial halo CMEs were observed after 16/2312 UTC. Modelling of the pair indicated an arrival beginning at midday on 20 Jul followed by a secondary arrival early on 21 Jul. At 21/1610 UTC, a disappearing solar filament was observed in the vicinity of Region 3757 (N18, L=061, class/area Hax/060 on 17 Jul). An associated halo CME was observed at 21/1648 UTC. Initial analysis indicated an arrival on 24 Jul. Further analysis is in progress at the time of this writing. No proton events were observed at geosynchronous orbit. The greater than 2 MeV electron flux at geosynchronous orbit was at normal to moderate levels. Geomagnetic field activity ranged from quiet to unsettled levels. Weak transient activity was evident on 15-16 Jul and possibly 19-20 Jul, however weak solar wind speeds in the 300-400 km/s range as well as a predominant northward Bz component led to only isolated unsettled periods on 15-16 Jul. Quiet conditions prevailed through 21 Jul.