Routine Space Environment Product (Daily)
Issued by NWS

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000
FXXX10 KWNP 281231
DAYTDF

:Product: 3-Day Forecast
:Issued: 2016 Apr 28 1230 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 3 (below NOAA
Scale levels).
The greatest expected 3 hr Kp for Apr 28-Apr 30 2016 is 5 (NOAA Scale
G1).

NOAA Kp index breakdown Apr 28-Apr 30 2016

            Apr 28     Apr 29     Apr 30
00-03UT        2          2          5 (G1)
03-06UT        1          2          5 (G1)
06-09UT        2          2          5 (G1)
09-12UT        2          2          4
12-15UT        1          2          3
15-18UT        2          3          3
18-21UT        2          4          4
21-00UT        2          4          4

Rationale: Day three (30 Apr) is likely to experience responses to minor
storm (G1-Minor) levels due to the anticipated CIR and CH HSS effects.

B. NOAA Solar Radiation Activity Observation and Forecast

Solar radiation, as observed by NOAA GOES-13 over the past 24 hours, was
below S-scale storm level thresholds.

Solar Radiation Storm Forecast for Apr 28-Apr 30 2016

              Apr 28  Apr 29  Apr 30
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 Apr 28-Apr 30 2016

              Apr 28        Apr 29        Apr 30
R1-R2            1%            1%            1%
R3 or greater    1%            1%            1%

Rationale: No R1 (Minor) or greater radio blackouts are expected.  No
significant active region flare activity is forecast.


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