Fire Weather Concerns and Severe Thunderstorms through the Weekend

Dry and windy conditions, and some dry thunderstorms and lightning, may support hazardous fire activity in the northern Plains, high southern Plains and the Southwest this weekend. An active severe weather pattern is forecast for portions of the central and southern High Plains into the Upper Midwest through early the part of next week. Damaging winds, large hail, and tornadoes are possible. Read More >

Table C5

Reference Time designator A2

(when T1 = Q, X, or Y)

Instructions for the proper application of the reference time designator

1. The designator specified in this table should be used to the greatest extent possible to indicate the reference time of data contained within the text of the bulletin.

2. When the table does not contain a suitable designator for the reference time, an alphabetic designator which is not assigned in the table should be introduced and the WMO secretariat notified.

Designator	Data Type	Designator	Data Type
A	Analysis (00 hour)	N	39 hours forecast
B	3 hours forecast	O	42 hours forecast
C	6 hours forecast	P	45 hours forecast
D	9 hours forecasts	Q	48 hours forecast
E	12 hours forecast	R	54 hours forecast [48+6]
F	15 hours forecast	S	66 hours forecast [+12]
G	18 hours forecast	T	78 hours forecast
H	21 hours forecast	U	90 hours forecast
I	24 hours forecast	V	102 days forecast
J	27 hours forecast	W	114 days forecast
K	30 hours forecast	X	126 days forecast
L	33 hours forecast	Y	138 days forecast
M	36 hours forecast	Z	150 days forecast