Update #1: The Critical Weather Day has ended early at 0300Z.  All NHC tropical watches and warnings for the Hawaiian Islands regarding Hurricane Nolo have been canceled.

Topic: Critical Weather Day Has Been Declared

Date/Time Issued: September 27, 2026 0355Z

Product(s) or Data Impacted: NWS IT Enterprise

Date/Time Initial Impact: September 23, 2026 2130Z JDAY 266

Date/Time Expected End: September 28, 2026 1200Z JDAY 271

Length of Event:  4 Days 14 Hours 30 Minutes 

Requester: NWS Central Operations, National Centers, and Weather Forecast Offices

Details/Specifics: Tropical Cyclone, Excessive Rainfall and Flooding , Tropical Cyclone ops in Hawaii.

Caution is also warranted for excessive rainfall and flooding operations in New Mexico.

Stop all operational changes. Exceptions must be approved by senior executive leadership designee. 

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

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