Critical Weather Day declared
Critical Weather Day ...CRITICAL WEATHER DAY DECLARED...
A Critical Weather Day has been declared because of tropical Cyclone ops across Guam, Rota, Tinian, and Saipan.
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.
Affected offices: NWS Central Operations, National Centers, and Weather Forecast Offices.
- Starts
- Ends
- Reason
- Tropical Cyclone ops across Guam, Rota, Tinian, and Saipan.
- Who
- NWS Central Operations, National Centers, and Weather Forecast Offices
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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 150519
ADASDM
SENIOR DUTY METEOROLOGIST NWS ALERT ADMINISTRATIVE MESSAGE
NWS CENTRAL OPERATIONS COLLEGE PARK MD
0519Z THU OCT 15 2026
...CRITICAL WEATHER DAY DECLARED...
Critical Weather Day has been declared for...
- START: 0500Z Thu Oct 15 2026
- END: 1200Z Sun Oct 18 2026
- WHO: NWS Central Operations, National Centers, and
Weather Forecast Offices
- REASON: Tropical Cyclone ops across Guam, Rota, Tinian,
and Saipan.
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/
Kempisty/SDM/NCO