Extreme Heat in the Southwest; Severe Weather in the Northern Plains; Heavy Rain in the East

Extreme heat continues across the Southwest as temperatures may top 120 degrees. The heat may expand across the West and south-central U.S. into the middle of the month. Severe thunderstorms capable of severe wind gusts and large hail will be the primary hazards today across the northern Plains into the upper Midwest. Rainfall could be locally heavy across the Eastern U.S. today. Read More >

Table D1

Level designator ii

(when T1 = O)

Instructions for the proper application of level designator.

1. The designator specified in this table should be used to the greatest extent possible to indicate the levels below the ocean surface in the body of the GRIB bulletin for oceanographic products.

2. When the table does not contain a suitable designator for the level, a designator which is not assigned in the table should be used.

Designator	Depth (in meters)
98	Surface
96	2.5
94	5.0
92	7.5
90	12.5
88	17.5
86	25.0
84	32.5
82	40.0
80	50.0
78	62.5
76	75.0
74	100
72	125
70	150
68	200
66	300
64	400
62	500
60	600
58	700
56	800
54	900
52	1000
50	1100
48	1200
46	1300
44	1400
42	1500
40	1750
38	2000
36	2500
34	3000
32	4000
30	5000
01	Primary layer depth