Plaese go to the Space Weather Prediction Center for more information. Please note: 
Items in grey italics apparently are older than 24 hours

625
WOXX23 KWNP 191206
WATA99

Space Weather Message Code: WATA99
Serial Number: 13
Issue Time: 2026 Jan 19 1203 UTC

WATCH: Geomagnetic Storm Category G4 or Greater Predicted
Highest Storm Level Predicted by Day:
Jan 20: G4 (Severe) Jan 21: G1 (Minor) Jan 22: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

720
WOXX10 KWNP 191911
WARSUD

Space Weather Message Code: WARSUD
Serial Number: 249
Issue Time: 2026 Jan 19 1909 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2026 Jan 19 1920 UTC
Valid To: 2026 Jan 19 2000 UTC
IP Shock Passage Observed: 2026 Jan 19 1903 UTC
www.swpc.noaa.gov/noaa-scales-explanation

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

257
WOXX13 KWNP 191931
WARK04

Space Weather Message Code: WARK04
Serial Number: 5226
Issue Time: 2026 Jan 19 1928 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 5225
Valid From: 2026 Jan 16 0254 UTC
Now Valid Until: 2026 Jan 21 0300 UTC
Warning Condition: Persistence
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

256
WOXX11 KWNP 191931
WARK05

Space Weather Message Code: WARK05
Serial Number: 2175
Issue Time: 2026 Jan 19 1927 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2174
Valid From: 2026 Jan 19 1902 UTC
Now Valid Until: 2026 Jan 20 2359 UTC
Warning Condition: Persistence

Comment: Correction for end time.
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

721
WOXX12 KWNP 191911
WARK06

Space Weather Message Code: WARK06
Serial Number: 633
Issue Time: 2026 Jan 19 1906 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2026 Jan 19 1902 UTC
Valid To: 2026 Jan 20 1800 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

778
WOXX14 KWNP 191911
WARK07

Space Weather Message Code: WARK07
Serial Number: 140
Issue Time: 2026 Jan 19 1906 UTC

WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2026 Jan 19 1902 UTC
Valid To: 2026 Jan 20 1500 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

417
WOXX14 KWNP 192116
ALTK07

Space Weather Message Code: ALTK07
Serial Number: 202
Issue Time: 2026 Jan 19 2114 UTC

ALERT: Geomagnetic K-index of 7
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

668
WOXX15 KWNP 192121
ALTK08

Space Weather Message Code: ALTK08
Serial Number: 56
Issue Time: 2026 Jan 19 2117 UTC

ALERT: Geomagnetic K-index of 8, 9-
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

079
WOXX32 KWNP 191816
WARPX1

Space Weather Message Code: WARPX1
Serial Number: 620
Issue Time: 2026 Jan 19 1814 UTC

EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 619
Valid From: 2026 Jan 18 2130 UTC
Now Valid Until: 2026 Jan 20 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S1 - Minor

Comment: This warning UPGRADED from S3 (Strong) to S4 (Severe) due to increasing Proton flux levels.
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov

716
WOXX02 KWNP 181906
SUMX01

Space Weather Message Code: SUMX01
Serial Number: 205
Issue Time: 2026 Jan 18 1900 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2026 Jan 18 1727 UTC
Maximum Time: 2026 Jan 18 1809 UTC
End Time: 2026 Jan 18 1851 UTC
X-ray Class: X1.9
Optical Class: 3b
Location: S12E20
NOAA Scale: R3 - Strong
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.

# Issued by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Recent messages, data, and help at http://swpc.noaa.gov/alerts/
# Send questions to SWPC.Webmaster@noaa.gov