National Weather Service United States Department of Commerce

Severe Thunderstorms in the Southeast; Critical Fire Weather in the Northern Plains

Isolated severe storms with locally damaging wind gusts and hail are possible from the coastal Carolinas into the Florida Peninsula, and along the central Gulf Coast. Heavy rain may cause localized areas of flash flooding in the Gulf Coast. Gusty winds and dry conditions may produce elevated to critical fire weather across the northern/central Plains. Record heat is expected in the West. Read More >

 

Table D2 or D3

Data level designator ii

(when T1   =   D, G, H, P, Q, V, X or Y)

 

There are TWO tables defined for this designator.

T1   = D, G, H, P, Q, V, X, or Y

1. The WMO standard Table D2 as documented in Manual 386 PART II, Attachment II-5, and used for T1   = D, G, H, P, Q, V, X, or Y , which is used in most parts of the world for defining these products.

T1   = H, X, Y, and Z

2. The U.S. National Practice Table D3 which is used to extend the data level designation of ii definitions as defined in WMO manual 386 Table D2, and used for T1   = H, X, Y, and Z bulletins, used for most U.S. model products.