Heavy to Excessive Rainfall for the Southwest; Thunderstorms in Florida with Flooding Possible

Tropical moisture from Priscilla will bring a multi-day thunderstorm, widespread heavy rainfall and flash flooding event across the Southwest/Four Corners region. Flash flooding will be a concern in burn scars, slot canyons, and urban areas. Widespread storms are expected in central/South Florida with some isolated flash flooding 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