IEM :: RASTER info for mrms

The IEM produces a number of RASTER images meant for GIS use. These RASTERs are typically provided on the IEM website as 8 bit PNG images. This means there are 256 slots available for a binned value to be placed. This page attempts to document these RASTER images and provide the lookup table of PNG index to an actual value. Click on the item in the "Label" column to get the lookup table below.

Label	Description	Units
composite_eet	This is a composite of 8bit Echo Tops (EET)	kft
composite_n0q	This is a composite of 8bit Reflectivity (N0Q)	dBZ
composite_n0r	This is a composite of Reflectivity (N0R)	dBZ
mrms_a2m	NCEP MRMS 2 minute interval precipitation accumulation.	mm
mrms_lcref	NCEP MRMS 2 minute lowest elevation composite reflectivity.	dBZ
mrms_p1h	NCEP MRMS 1 Hour Accumulated Precipitation.	mm
mrms_p24h	NCEP MRMS 24 Hour Accumulated Precipitation.	mm
mrms_p48h	NCEP MRMS 48 Hour Accumulated Precipitation	mm
mrms_p72h	NCEP MRMS 72 Hour Accumulated Precipitation.	mm

Programatic Access to this RASTER source

The IEM generated RASTERs are stored in a programatic way that should allow for easy scripted download of the archive. This section documents the URL format template used with the time shown in UTC. The string format modifiers below are pythonic strftime values.

https://mesonet.agron.iastate.edu/archive/data/%Y/%m/%d/GIS/mrms/a2m_%Y%m%d%H%M.png

A general web service also exists to convert these RASTERs to netCDF "on-the-fly". The URL format is like so:

https://mesonet.agron.iastate.edu/cgi-bin/request/raster2netcdf.py?dstr=%Y%m%d%H%M&prod=mrms_a2m

Try the netCDF Conversion!

Lookup Table for mrms_a2m

Would it help you to have the information below in a different format? Please contact us if so!

Color Index	Value (mm)	Red	Green	Blue	HEX
0	0	0	0	0	#000000
1	0.02	0	0	0	#000000
2	0.04	0	0	0	#000000
3	0.06	0	0	0	#000000
4	0.08	0	24	255	#0018ff
5	0.1	0	30	255	#001eff
6	0.12	0	36	255	#0024ff
7	0.14	0	42	255	#002aff
8	0.16	0	48	255	#0030ff
9	0.18	0	54	255	#0036ff
10	0.2	0	60	255	#003cff
11	0.22	0	66	255	#0042ff
12	0.24	0	72	255	#0048ff
13	0.26	0	78	255	#004eff
14	0.28	0	84	255	#0054ff
15	0.3	0	90	255	#005aff
16	0.32	0	96	255	#0060ff
17	0.34	0	102	255	#0066ff
18	0.36	0	108	255	#006cff
19	0.38	0	114	255	#0072ff
20	0.4	0	120	255	#0078ff
21	0.42	0	126	255	#007eff
22	0.44	0	132	255	#0084ff
23	0.46	0	138	255	#008aff
24	0.48	0	144	255	#0090ff
25	0.5	0	150	255	#0096ff
26	0.52	0	156	255	#009cff
27	0.54	0	162	255	#00a2ff
28	0.56	0	168	255	#00a8ff
29	0.58	0	174	255	#00aeff
30	0.6	0	180	255	#00b4ff
31	0.62	0	186	255	#00baff
32	0.64	0	192	255	#00c0ff
33	0.66	0	198	255	#00c6ff
34	0.68	0	204	255	#00ccff
35	0.7	0	210	255	#00d2ff
36	0.72	0	216	255	#00d8ff
37	0.74	0	254	240	#00fef0
38	0.76	0	254	234	#00feea
39	0.78	0	254	228	#00fee4
40	0.8	0	254	222	#00fede
41	0.82	0	254	216	#00fed8
42	0.84	0	254	210	#00fed2
43	0.86	0	254	204	#00fecc
44	0.88	0	254	198	#00fec6
45	0.9	0	254	192	#00fec0
46	0.92	0	254	186	#00feba
47	0.94	0	254	180	#00feb4
48	0.96	0	254	174	#00feae
49	0.98	0	254	168	#00fea8
50	1	0	254	162	#00fea2
51	1.02	0	254	156	#00fe9c
52	1.04	0	254	150	#00fe96
53	1.06	0	254	144	#00fe90
54	1.08	0	254	138	#00fe8a
55	1.1	0	254	132	#00fe84
56	1.12	0	254	126	#00fe7e
57	1.14	0	254	120	#00fe78
58	1.16	0	254	114	#00fe72
59	1.18	0	254	108	#00fe6c
60	1.2	0	254	102	#00fe66
61	1.22	0	254	96	#00fe60
62	1.24	0	254	90	#00fe5a
63	1.26	0	254	84	#00fe54
64	1.28	0	254	78	#00fe4e
65	1.3	0	254	72	#00fe48
66	1.32	0	254	66	#00fe42
67	1.34	0	254	60	#00fe3c
68	1.36	0	254	54	#00fe36
69	1.38	0	254	48	#00fe30
70	1.4	0	254	42	#00fe2a
71	1.42	0	254	36	#00fe24
72	1.44	0	254	30	#00fe1e
73	1.46	0	254	24	#00fe18
74	1.48	0	254	18	#00fe12
75	1.5	0	254	12	#00fe0c
76	1.52	0	254	6	#00fe06
77	1.54	0	254	0	#00fe00
78	1.56	6	254	0	#06fe00
79	1.58	12	254	0	#0cfe00
80	1.6	18	254	0	#12fe00
81	1.62	24	254	0	#18fe00
82	1.64	30	254	0	#1efe00
83	1.66	36	254	0	#24fe00
84	1.68	42	254	0	#2afe00
85	1.7	48	254	0	#30fe00
86	1.72	54	254	0	#36fe00
87	1.74	60	254	0	#3cfe00
88	1.76	66	254	0	#42fe00
89	1.78	72	254	0	#48fe00
90	1.8	78	254	0	#4efe00
91	1.82	84	254	0	#54fe00
92	1.84	90	254	0	#5afe00
93	1.86	96	254	0	#60fe00
94	1.88	102	254	0	#66fe00
95	1.9	108	254	0	#6cfe00
96	1.92	114	254	0	#72fe00
97	1.94	120	254	0	#78fe00
98	1.96	126	254	0	#7efe00
99	1.98	132	254	0	#84fe00
100	2	138	254	0	#8afe00
101	2.02	144	254	0	#90fe00
102	2.04	150	254	0	#96fe00
103	2.06	156	254	0	#9cfe00
104	2.08	162	254	0	#a2fe00
105	2.1	168	254	0	#a8fe00
106	2.12	174	254	0	#aefe00
107	2.14	180	254	0	#b4fe00
108	2.16	186	254	0	#bafe00
109	2.18	192	254	0	#c0fe00
110	2.2	198	254	0	#c6fe00
111	2.22	204	254	0	#ccfe00
112	2.24	210	254	0	#d2fe00
113	2.26	216	254	0	#d8fe00
114	2.28	222	254	0	#defe00
115	2.3	228	254	0	#e4fe00
116	2.32	234	240	0	#eaf000
117	2.34	254	234	0	#feea00
118	2.36	254	228	0	#fee400
119	2.38	254	222	0	#fede00
120	2.4	254	216	0	#fed800
121	2.42	254	210	0	#fed200
122	2.44	254	204	0	#fecc00
123	2.46	254	198	0	#fec600
124	2.48	254	192	0	#fec000
125	2.5	254	186	0	#feba00
126	2.52	254	180	0	#feb400
127	2.54	254	174	0	#feae00
128	2.56	254	168	0	#fea800
129	2.58	254	162	0	#fea200
130	2.6	254	156	0	#fe9c00
131	2.62	254	150	0	#fe9600
132	2.64	254	144	0	#fe9000
133	2.66	254	138	0	#fe8a00
134	2.68	254	132	0	#fe8400
135	2.7	254	126	0	#fe7e00
136	2.72	254	120	0	#fe7800
137	2.74	254	114	0	#fe7200
138	2.76	254	108	0	#fe6c00
139	2.78	254	102	0	#fe6600
140	2.8	254	96	0	#fe6000
141	2.82	254	90	0	#fe5a00
142	2.84	254	84	0	#fe5400
143	2.86	254	78	0	#fe4e00
144	2.88	254	72	0	#fe4800
145	2.9	254	66	0	#fe4200
146	2.92	254	60	0	#fe3c00
147	2.94	254	54	0	#fe3600
148	2.96	254	48	0	#fe3000
149	2.98	254	42	0	#fe2a00
150	3	254	36	0	#fe2400
151	3.02	254	30	0	#fe1e00
152	3.04	254	24	0	#fe1800
153	3.06	254	18	0	#fe1200
154	3.08	254	12	0	#fe0c00
155	3.1	254	6	0	#fe0600
156	3.12	254	0	0	#fe0000
157	3.14	254	0	0	#fe0000
158	3.16	254	0	0	#fe0000
159	3.18	254	0	0	#fe0000
160	3.2	254	0	0	#fe0000
161	3.22	254	0	6	#fe0006
162	3.24	254	0	12	#fe000c
163	3.26	254	0	18	#fe0012
164	3.28	254	0	24	#fe0018
165	3.3	254	0	30	#fe001e
166	3.32	254	0	36	#fe0024
167	3.34	254	0	42	#fe002a
168	3.36	254	0	48	#fe0030
169	3.38	254	0	54	#fe0036
170	3.4	254	0	60	#fe003c
171	3.42	254	0	66	#fe0042
172	3.44	254	0	72	#fe0048
173	3.46	254	0	78	#fe004e
174	3.48	254	0	84	#fe0054
175	3.5	254	0	90	#fe005a
176	3.52	254	0	96	#fe0060
177	3.54	254	0	102	#fe0066
178	3.56	254	0	108	#fe006c
179	3.58	254	0	114	#fe0072
180	3.6	254	0	120	#fe0078
181	3.62	254	0	126	#fe007e
182	3.64	254	0	132	#fe0084
183	3.66	254	0	138	#fe008a
184	3.68	254	0	144	#fe0090
185	3.7	254	0	150	#fe0096
186	3.72	254	0	156	#fe009c
187	3.74	254	0	162	#fe00a2
188	3.76	254	0	168	#fe00a8
189	3.78	254	0	174	#fe00ae
190	3.8	254	0	180	#fe00b4
191	3.82	254	0	186	#fe00ba
192	3.84	254	0	192	#fe00c0
193	3.86	254	0	198	#fe00c6
194	3.88	254	0	204	#fe00cc
195	3.9	254	0	210	#fe00d2
196	3.92	254	0	254	#fe00fe
197	3.94	254	4	254	#fe04fe
198	3.96	254	8	254	#fe08fe
199	3.98	254	12	254	#fe0cfe
200	4	254	16	254	#fe10fe
201	4.02	254	20	254	#fe14fe
202	4.04	254	24	254	#fe18fe
203	4.06	254	28	254	#fe1cfe
204	4.08	254	32	254	#fe20fe
205	4.1	254	36	254	#fe24fe
206	4.12	254	40	254	#fe28fe
207	4.14	254	44	254	#fe2cfe
208	4.16	254	48	254	#fe30fe
209	4.18	254	52	254	#fe34fe
210	4.2	254	56	254	#fe38fe
211	4.22	254	60	254	#fe3cfe
212	4.24	254	64	254	#fe40fe
213	4.26	254	68	254	#fe44fe
214	4.28	254	72	254	#fe48fe
215	4.3	254	76	254	#fe4cfe
216	4.32	254	80	254	#fe50fe
217	4.34	254	84	254	#fe54fe
218	4.36	254	88	254	#fe58fe
219	4.38	254	92	254	#fe5cfe
220	4.4	254	96	254	#fe60fe
221	4.42	254	100	254	#fe64fe
222	4.44	254	104	254	#fe68fe
223	4.46	254	108	254	#fe6cfe
224	4.48	254	112	254	#fe70fe
225	4.5	254	116	254	#fe74fe
226	4.52	254	120	254	#fe78fe
227	4.54	254	124	254	#fe7cfe
228	4.56	254	128	254	#fe80fe
229	4.58	254	132	254	#fe84fe
230	4.6	254	136	254	#fe88fe
231	4.62	254	140	254	#fe8cfe
232	4.64	254	144	254	#fe90fe
233	4.66	254	148	254	#fe94fe
234	4.68	254	152	254	#fe98fe
235	4.7	254	156	254	#fe9cfe
236	4.72	254	160	254	#fea0fe
237	4.74	254	164	254	#fea4fe
238	4.76	254	168	254	#fea8fe
239	4.78	254	172	254	#feacfe
240	4.8	254	176	254	#feb0fe
241	4.82	254	180	254	#feb4fe
242	4.84	254	184	254	#feb8fe
243	4.86	254	188	254	#febcfe
244	4.88	254	192	254	#fec0fe
245	4.9	254	196	254	#fec4fe
246	4.92	254	200	254	#fec8fe
247	4.94	254	204	254	#feccfe
248	4.96	254	208	254	#fed0fe
249	4.98	254	212	254	#fed4fe
250	5	254	216	254	#fed8fe
251	5.02	254	220	254	#fedcfe
252	5.04	254	224	254	#fee0fe
253	5.06	254	228	254	#fee4fe
254	5.08	254	232	254	#fee8fe
255	Missing	144	144	144	#909090