RTMA: Real-Time Mesoscale Analysis

  • The Real-Time Mesoscale Analysis (RTMA) dataset provides high-resolution, hourly analyses of near-surface weather conditions for the CONUS region at 2.5 km spatial resolution.

  • This dataset includes various atmospheric and weather-related bands such as temperature, pressure, wind speed and direction, humidity, precipitation, and cloud cover.

  • The data is available from 2011-01-01T00:00:00Z to 2025-10-16T18:00:00Z and is provided by NOAA/NWS.

  • NOAA data is in the public domain and can be used without restrictions.
NOAA/NWS/RTMA
Dataset Availability
2011-01-01T00:00:00Z–2025-10-27T18:00:00Z
Dataset Provider
Earth Engine Snippet
ee.ImageCollection("NOAA/NWS/RTMA")
Cadence
1 Hour
Tags
atmosphere climate cloud geophysical humidity noaa nws precipitation pressure surface temperature weather wind
rtma
visibility

Description

The Real-Time Mesoscale Analysis (RTMA) is a high-spatial and temporal resolution analysis for near-surface weather conditions. This dataset includes hourly analyses at 2.5 km for CONUS.

Bands

Pixel Size
2500 meters

Bands

Name Units Min Max Pixel Size Description
HGT m -81* 4226* meters

Model terrain elevation
PRES Pa 60848* 105183* meters

Pressure
TMP °C -43.2* 43.73* meters

Temperature
DPT °C -81.41* 30.92* meters

Dew point temperature
UGRD m/s -32.93* 34.04* meters

U-component of wind
VGRD m/s -28.44* 39.21* meters

V-component of wind
SPFH Mass fraction 0* 0.02* meters

Specific humidity
WDIR deg 0* 360* meters

Wind direction (from which blowing)
WIND m/s 0* 42.46* meters

Wind speed
GUST m/s 0* 58.02* meters

Wind speed (gust)
VIS m 0* 20000* meters

Visibility
TCDC % 0* 100* meters

Total cloud cover
ACPC01 kg/m^2 0* 1* meters

Total precipitation
* estimated min or max value

Terms of Use

Terms of Use

NOAA data, information, and products, regardless of the method of delivery, are not subject to copyright and carry no restrictions on their subsequent use by the public. Once obtained, they may be put to any lawful use. The forgoing data is in the public domain and is being provided without restriction on use and distribution. For more information visit the NWS disclaimer site.

Explore with Earth Engine

Code Editor (JavaScript)

var dataset = ee.ImageCollection('NOAA/NWS/RTMA')
                  .filter(ee.Filter.date('2018-03-01', '2018-03-02'));
var windSpeed = dataset.select('WIND');
var windSpeedVis = {
  min: 0.0,
  max: 12.0,
  palette: ['001137', '01abab', 'e7eb05', '620500'],
};
Map.setCenter(-95.62, 39.91, 4);
Map.addLayer(windSpeed, windSpeedVis, 'Wind Speed');
Open in Code Editor
The Real-Time Mesoscale Analysis (RTMA) is a high-spatial and temporal resolution analysis for near-surface weather conditions. This dataset includes hourly analyses at 2.5 km for CONUS.
NOAA/NWS/RTMA, atmosphere,climate,cloud,geophysical,humidity,noaa,nws,precipitation,pressure,surface,temperature,weather,wind
2011-01-01T00:00:00Z/2025-10-27T18:00:00Z
20.15 -130.17 52.91 -60.81
Google Earth Engine