670
FXXX10 KWNP 060031
DAYTDF

:Product: 3-Day Forecast
:Issued: 2026 Nov 06 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 Nov 06-Nov 08 2026 is 5.00 (NOAA Scale
G1).

NOAA Kp index breakdown Nov 06-Nov 08 2026

             Nov 06       Nov 07       Nov 08
00-03UT       2.33         5.00 (G1)    4.00
03-06UT       2.00         3.67         4.33
06-09UT       2.00         3.33         4.67 (G1)
09-12UT       2.33         3.33         3.00
12-15UT       2.33         3.33         3.33
15-18UT       3.67         3.33         4.00
18-21UT       4.00         3.33         5.00 (G1)
21-00UT       4.67 (G1)    3.33         4.33

Rationale: The geomagnetic field activity is likely to reach G1 (Minor)
geomagnetic storm levels on 06-08 Nov, with a chance for G2 (Moderate)
levels on 07-08 Nov, due to the anticipated influences of a negative
polarity CH HSS.

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 Nov 06-Nov 08 2026

              Nov 06  Nov 07  Nov 08
S1 or greater    5%      5%      5%

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

Radio blackouts reaching the R1 levels were observed over the past 24
hours. The largest was at 05/1833Z UTC.

Radio Blackout Forecast for Nov 06-Nov 08 2026

              Nov 06        Nov 07        Nov 08
R1-R2           35%           35%           35%
R3 or greater   10%           10%           10%

Rationale: There is a chance for R1-R2 (Minor-Moderate) radio blackouts
and a slight chance for an isolated R3 (Strong) event on 06-08 Nov,
primarily due to the potential from Regions 4565 and 4566.