Areas of Severe Thunderstorms and Excessive Rainfall Today

Scattered severe thunderstorms capable of damaging wind gusts and some hail are expected this afternoon and evening from the Upper Ohio River Valley into the Northeast, and from the Appalachians into the Mid-Atlantic States. Excessive rainfall from heavy thunderstorms may produce areas of flash flooding from southern New Mexico into the western and northern Gulf Coast into Wednesday. Read More >

Table B2

Data type designator T2

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

Instructions for the proper application of the data type designator

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

2. Where more than one type is contained in the text, the designator for one of the data types should be used.

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

Designator	Data Type
A	Radar data
B	Cloud
C	Vorticity
D	Thickness (relative topography)
E	Precipitation
F	Unassigned
G	Divergence
H	Height
I	Unassigned
J	Wave height + combinations
K	Swell height + combinations
L	Unassigned
M	For national use
N	Radiation
O	Vertical velocity
P	Pressure
Q	Web bulb potential temperature
R	Relative humidity
S	Unassigned
T	Temperature
U	Eastward wind component
V	Northward wind component
W	Wind
X	Unassigned
Y	Unassigned
Z	Unassigned