Update #3: Critical Weather Day has been extended to 1600Z Friday Apr 17 2026 (107) for Typhoon Sinlaku ops in Guam and the Northern Mariana Islands.

Update #2: Critical Weather Day has been extended to 1200Z Wednesday Apr 15 2026 (105) for Typhoon Sinlaku ops in Guam and the Northern Mariana Islands.

Update #1: Critical Weather Day has been extended to 0000Z Wed Apr 15 2026 (105) for continued support of tropical cyclone ops in Guam and the Northern Mariana Islands.

Topic: Critical Weather Day Has Been Declared

Date/Time Issued: April 16, 2026 2347Z

Product(s) or Data Impacted: NWS IT Enterprise

Date/Time Initial Impact: April 11, 2026 0200Z (101)

Date/Time Expected End: April 14, 2026 1200Z  (104)

Length of Event: 82 Hours

Who: NCEP, NCF, NWS Pacific Region

Details/Specifics: Tropical Cyclone ops in Guam.

Please visit the CWD status page for more information: https://www.nco.ncep.noaa.gov/status/cwd/

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