Extremely Critical Fire Weather in Southern California; Winter Storm To Impact the Southern U.S.

High winds and low relative humidity will continue critical to extremely critical fire weather in southern California through Thursday. A winter storm is expected to bring major impacts from areas of heavy snow, sleet, and freezing rain to portions of the southern Plains beginning on Thursday before intensifying as it shifts across the Mid-South Friday through Saturday morning. Read More >

Table B6

Data type designator T2

(when T1 = P, Q)

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	Clear Air turbulence
D	Thickness (relative topography)
E	Precipitation
F	Aerological diagrams (ash clouds)
G	Significant weather
H	Height
I	Sky/cloud cover
J	Wave height + combinations
K	Swell height + combinations
L	Plain language
M	For national use
N	Radiation
O	Vertical velocity
P	Pressure
Q	Web bulb potential temperature
R	Relative humidity
S	Snow cover
T	Temperature
U	Eastward wind component
V	Northward wind component
W	Wind
X	Lifted index
Y	Observational plot chart
Z	Not assigned