
Severe thunderstorms will be possible over parts of the northern Plains today through Thursday which could bring large hail, damaging winds, and possible tornadoes. Today and Wednesday, thunderstorms with heavy to excessive rainfall may produce flooding over parts of the southern High Plains. North Dakota could also see heavy to excessive rainfall today. Read More >
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National Program
There are TWO tables defined for this designator.
T1 = H
1. The WMO standard Table C3 as documented in Manual 386 PART II, Attachment II-5, and used for T1 = H, which is used in most parts of the world for defining these products.
T1 = H, Y, and Z
2. The U.S. National Practice Table C8 which is used to extend the definitions as defined in WMO manual 386 Table C3, and used for T1 = H, Y, and Z bulletins, used for most U.S. model products.
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