Blackbody Radiation
BLD
BLDUP
Blizzard
Blizzard Warning
BLO
Blocked Flow
Blowing
Blowing Dust or Sand
Blowing Snow
Blowing Snow Advisory
Blue Watch or Blue Box
Blustery
BLV
BLZD
| BN
BNDRY
Bomb
Bora
Border Ice
Boundary Layer
Bounded Weak Echo Region (BWER)
BOVC
Bow Echo
Bowen Ratio
Box Model
BR
Brackish Ice
Braided Stream
Brash Ice
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