309
NOUS41 KWBC 021815
PNSWSH
SERVICE CHANGE NOTICE 26-21
NATIONAL WEATHER SERVICE HEADQUARTERS SILVER SPRING MD
115 PM EST MON MAR 2 2026
TO: SUBSCRIBERS
-NOAA WEATHER WIRE SERVICE
-EMERGENCY MANAGERS WEATHER INFORMATION NETWORK
-NOAAPORT
OTHER NWS PARTNERS, USERS AND EMPLOYEES
FROM: CLINTON WALLACE
DIRECTOR, SPACE WEATHER PREDICTION CENTER
SUBJECT: DATA FORMAT CHANGES IMPACTING SPACE WEATHER PREDICTION
CENTER PRODUCTS EFFECTIVE ON OR ABOUT MARCH 31, 2026.
EFFECTIVE ON OR ABOUT MARCH 31, 2026, THE SPACE WEATHER
PREDICTION CENTER (SWPC) WILL IMPLEMENT DATA FORMAT CHANGES THAT
RESTRUCTURE JSON DATA FOR THE FOLLOWING PRODUCTS:
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/KYOTO-DST.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SUMMARY/10CM-FLUX.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/10CM-FLUX-30-DAY.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/NOAA-PLANETARY-K-
INDEX.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SUMMARY/SOLAR-WIND-MAG-
FIELD.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SUMMARY/SOLAR-WIND-
SPEED.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/NOAA-PLANETARY-K-INDEX-
FORECAST.JSON
THE PRODUCTS KYOTO-DST.JSON, 10CM-FLUX-30-DAY.JSON, NOAA-
PLANETARY-K-INDEX.JSON, NOAA-PLANETARY-K-INDEX-FORECAST.JSON
WILL BE UPDATED FROM A FORMAT WHERE THE FIRST ENTRY CONTAINS THE
KEYS AND THE SUBSEQUENT ENTRIES CONTAIN THE CORRESPONDING
VALUES, TO A STANDARD JSON OBJECT FORMAT WHERE EACH OBJECT
EXPLICITLY DEFINES ITS DATA USING KEY-VALUE PAIRS. THE DATA
VALUES ASIDE FROM THE “TIME_TAG” WILL BE NUMERIC,AND WILL NO
LONGER BE QUOTED.
THE PRODUCTS 10-CM-FLUX.JSON, SOLAR-WIND-MAG-FIELD.JSON AND
SOLAR-WIND-SPEED.JSON WILL NOW INCLUDE THE OUTSIDE BRACKETS SO
THAT THOSE FILES FOLLOW THE STANDARD JSON ARRAY FORMAT. THE DATA
VALUES ASIDE FROM THE “TIME_TAG” WILL BE NUMERIC, AND WILL NO
LONGER BE QUOTED.
STATIC EXAMPLES OF THESE FILES IN THEIR NEW FORMATS ARE
AVAILABLE AT HTTPS://SERVICES.SWPC.NOAA.GOV/TEXT/SCN/FY26-03/
REMOVAL OF DEPRECATED REAL-TIME SOLAR WIND (RTSW) PRODUCTS:
EFFECTIVE ON OR ABOUT APRIL 30, 2026
THE FOLLOWING RTSW PRODUCTS ARE BEING DEPRECATED AND WILL BE
REMOVED:
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/MAG-1-
DAY.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/MAG-2-
HOUR.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/MAG-3-
DAY.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/MAG-5-
MINUTE.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/MAG-6-
HOUR.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/MAG-7-
DAY.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/PLASMA-1-
DAY.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/PLASMA-2-
HOUR.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/PLASMA-3-
DAY.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/PLASMA-5-
MINUTE.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/PLASMA-6-
HOUR.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-WIND/PLASMA-7-
DAY.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/PRODUCTS/SOLAR-
WIND/EPHEMERIDES.JSON
ALTERNATIVE RTSW PRODUCTS
REPLACEMENT PRODUCTS ARE AVAILABLE NOW AT THE FOLLOWING
ENDPOINTS:
HTTPS://SERVICES.SWPC.NOAA.GOV/JSON/RTSW/RTSW_EPHEMERIDES_1H.JSO
N
HTTPS://SERVICES.SWPC.NOAA.GOV/JSON/RTSW/RTSW_MAG_1M.JSON
HTTPS://SERVICES.SWPC.NOAA.GOV/JSON/RTSW/RTSW_WIND_1M.JSON
THESE UPDATED RTSW PRODUCTS INCLUDE BOTH “SOURCE” AND
“ACTIVE”
METADATA FIELDS:
SOURCE — IDENTIFIES THE SATELLITE FROM WHICH THE DATA ORIGINATED
ACTIVE — A BOOLEAN INDICATING WHETHER THE SATELLITE WAS
CONSIDERED ACTIVE BY SWPC FORECASTERS AT THE TIME
THE DEPRECATED PRODUCTS INCLUDED DATA ONLY FROM WHICHEVER
SATELLITE WAS DEEMED ACTIVE AT THE TIME, WITHOUT EXPOSING THIS
METADATA.
THE ORIGINAL VALUES, EXCLUDING THE “TIME_TAG” VALUE WERE STORED
AS QUOTED STRINGS, WHILE THE REPLACEMENT VALUES ARE NUMERIC
FLOATS WITHOUT QUOTES.
THE REPLACEMENT FILES FOR THE DEPRECATED MAGNETOMETER AND SOLAR
WIND PRODUCTS CONTAIN FOUR OF THE OLD TIMEFRAMES (1-DAY, 2-HOUR,
5-MINUTE AND 6-HOUR). TO SUPPORT THE UPDATED CADENCE, 3-DAY AND
7-DAY USERS MUST RETRIEVE AND RETAIN THE 1-DAY FILE.
THE REPLACEMENT FILE FOR THE EPHEMERIDES PRODUCT WILL BE UPDATED
TO INCLUDE THE DATA INTO THE NEXT MONTH THAT THE DEPRECATED
PRODUCT PROVIDES.
DATA ELEMENT MAPPING
RTSW PLASMA (WIND)
THE “TIME_TAG” FIELD IS THE SAME IN THE REPLACEMENT, FOR
“DENSITY” USERS WILL NEED TO USE “PROTON_DENSITY”,
“SPEED” WILL
MAP TO “PROTON_SPEED”, AND “TEMPERATURE” MAPS TO
“PROTON_TEMPERATURE”.
RTSW MAGNETOMETER (MAG)
THE “TIME_TAG”, "BX_GSM", "BY_GSM", "BZ_GSM", "BT" FIELDS ARE
THE SAME IN THE REPLACEMENT, "LON_GSM" USERS WILL NEED TO USE
"PHI_GSM", "LAT_GSM" WILL MAP TO "THETA_BSM".
FOR QUESTIONS AND COMMENTS, PLEASE CONTACT:
JACLYN STICKROD
SOFTWARE ENGINEER
NOAA SPACE WEATHER PREDICTION CENTER
BOULDER, CO
EMAIL: JACLYN.STICKROD@NOAA.GOV
AND
BEN NICHOLS
CHIEF, TECHNOLOGY DIVISION
NOAA SPACE WEATHER PREDICTION CENTER
BOULDER, CO
EMAIL: BEN.NICHOLS@NOAA.GOV
NATIONAL SERVICE CHANGE NOTICES ARE ONLINE AT:
HTTPS://WWW.WEATHER.GOV/NOTIFICATION/
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