Geophysical report

Viewing archive of Saturday, 16 May 2026

Solar and Geophysical Activity Summary 2026 May 16 0245 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.com

Joint USAF/NOAA Solar and Geophysical Activity Summary

SGAS Number 136 Issued at 0245Z on 16 May 2026 This report is compiled from data received at SWO on 15 May

A. Energetic Events

Begin  Max  End  Rgn   Loc   Xray  Op 245MHz 10cm   Sweep
 0720 0720 0720                       260                           
 0838 0840 0841  4435 N24W72       Sf 110                           
 0932 0936 0939              B9.4     590                           
 1143 1150 1154  4435 N23W74 C4.3  Sf 160           II              
 1310 1313 1317  4435 N24W75 C6.7  Sf 3200          II              
 1605 1614 1618  4435 N23W76 C9.5  Sf 390           II              
 1732 1740 1745  4435        B8.2     110

B. Proton Events

None

C. Geomagnetic Activity Summary

Field conditions were at quiet to moderate (G2) levels.

D. Stratwarm

Not available

E. Daily Indices: (real-time preliminary/estimated values)

10 cm 101  SSN 046  Afr/Ap 022/035   X-ray Background B3.9
Daily Proton Fluence (flux accumulation over 24 hrs)
GT 1 MeV 3.3e+06   GT 10 MeV 1.8e+04 p/(cm2-ster-day)
(GOES-19 satellite synchronous orbit W72 degrees)
Daily Electron Fluence
GT 2 MeV 1.20e+07 e/(cm2-ster-day)
(GOES-19 satellite synchronous orbit W72 degrees)
3 Hour K-indices
Boulder 1 2 3 3 5 5 4 5 Planetary 2 2 3 3 5 5 4 6

F. Comments

  None

All times in UTC

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This day in history*

Solar flares
1	2002	X2.61
2	2023	M5.7
3	2000	M4.77
4	2000	M4.39
5	2002	M3.24

		Dst	G
1	1959	-183	G4
2	1961	-105	G4
3	1980	-80	G3
4	1991	-78	G1
5	1982	-73	G1

*since 1994

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