Alert
ADA
Routine status message
Critical Weather Day ...CRITICAL WEATHER DAY UPDATED...
A Critical Weather Day status update.
A “Critical Weather Day” is an internal NWS operations posture. When one is declared, NWS postpones scheduled software, hardware and network changes at the affected offices so that nothing is disturbed while forecasters are working high-impact weather. Emergency changes still get made, but they need senior sign-off. It is a signal about how NWS is protecting its own systems — it is not a forecast or a warning, and it does not tell you anything about conditions where you live.
- Starts
- Ends
- Reason
- Tropical Cyclone ops in Hawaii.
- Who
- NWS Central Operations, National Centers, and Weather
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Exactly as NWS transmitted it. Everything above is our plain-English reading of this text — if the two ever disagree, this is the authoritative version.
000 NOUS42 KWNO 080910 ADASDM SENIOR DUTY METEOROLOGIST NWS ALERT ADMINISTRATIVE MESSAGE NWS CENTRAL OPERATIONS COLLEGE PARK MD 0909Z TUE SEP 08 2026 ...CRITICAL WEATHER DAY UPDATED... Critical Weather Day has been updated for... - START: 0300Z Mon Sep 07 2026 - END: 2100Z Tue Sep 08 2026 - WHO: NWS Central Operations, National Centers, and Weather Forecast Offices - REASON: Tropical Cyclone ops in Hawaii. All scheduled software/hardware/network changes for the impacted offices will be postponed until the CWD has ended. Any emergency changes will be evaluated and approved by senior management officials or their designees. NWS offices should contact their sector offices for further questions about this CWD. Please visit the CWD status page for more information: https://www.nco.ncep.noaa.gov/status/cwd/ Gerhardt/SDM/NCO