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Blue Watch or Blue Box

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Weather

[Slang], a severe thunderstorm watch.

NOAA National Weather Service — National Weather Service Glossary

Related Weather terms

National Hurricane Center
NHC
Red Watch or Red Box
SEL
SELS
Severe Local Storm Watch
Severe Thunderstorm Warning
Severe Thunderstorm Watch
Tornado Warning
Tornado Watch
Watch Box
Watch Cancellation
Watch Status Reports
WW

Nearby Weather terms

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Definitions are reproduced with attribution to their original sources; each entry links to the source and shows when it was retrieved. About · FAQ · Data build 2026-10-15.