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Short-term Weather Forecasting (WRF) icon GEOSS Decision Support/ SHORT-TERM FORECAS—MM5

Home > GEOSS Decision Support > Weather > Short-term Forecast—MM5

 
Short-term Weather Forecasting (WRF) image

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Short-term forecast for Mesoamerica

SERVIR produces short-term regional weather forecasts using the PSU/NCAR Mesoscale Model, known as MM5 in the atmospheric sciences community. The MM5 model generates 48 hour-forecasts once a day. Soil temperature, 2m surface temperature, 3 hour accumulated precipitation as an early warning, wind in different heights, and other variables are forecast hourly in 9km grids covering the Yucatan Peninsula to northwest Panama. These are posted on the website daily at 10:00 am CST.

Current and previous forecasts can be viewed, animated, and downloaded from the Realtime Image Viewer. MM5 forecasts can be overlayed with other regional weather products and datasets using the free 3D SERVIR-VIZ application. Click on the SERVIR Data Portal icon and type the in keywords "Weather" to view all related weather data products. Click here for specific details on MM5 model inputs and parameters.

Mesoamerican Short-term Weather Forecasting Products
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Click on the SERVIR-VIZ icon to download
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animate, and compare these products with
other datasets
Click on the Data Portal icon to search
and download related data products


Model Regions: Central America (9 km). Data Release Time:

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 24 Hours Animation 48 Hours Animation
 
Previous Forecasts
 
Information About MM5
Version 3.7
Dynamic core NCAR Eulerian Mass
Horizontal grid size Coarse Caribbean: 180 x 110 points ?
Central America Nest: 205 x 180 points
Vertical levels 37
Horizontal grid resolution Coarse Caribbean: 27 km
Central American Nest: 9 km
Model top 100 kPa
Initial and lateral boundary conditions AVN GFS 1° grid
Computational platform Linux Intel P4 Cluster (16 procs)
Simulation length 48 hours
Simulation run time ~ 2 hours
Time step Coarse Caribbean: 72 seconds
Central America Nest: 24 seconds
Cumulus parameterization Grell Scheme
Shortwave radiation Dudhia Scheme
PBL physics MRF écheme