Hurricane forecast models
Refer to here: http://www.nhc.noaa.gov/modelsummary.shtml
http://derecho.math.uwm.edu/models/models.html
Official Forecasts
These five identifiers represent forecasts issued by NOAA's National
Hurricane Center (NHC), Central Pacific Hurricane Center (CPHC), Weather
Prediction Center (formerly Hydrometeorological Prediction Center), and
Ocean Prediction Center. While derived from official sources of
information, they should NOT be considered to be official.OFCL | Official NHC/CPHC Forecast |
OFCI | Official NHC/CPHC Forecast Interpolated Ahead 6 hr |
OHPC | Official Hydrometeorological Prediction Center Forecast |
OOPC | Official Ocean Prediction Center Forecast |
Dynamical Models
These identifiers represent forecasts obtained from weather forecast
models that solve mathematical equations that describe how wind,
temperature, and moisture evolve within the atmosphere. Most of these
models forecast the weather over the entire globe and are not
specifically designed for tropical storm and hurricane forecasting.AVNO / GFSO | Global Forecast System Model Forecast |
AVNI / GFSI | Previous GFS Forecast Interpolated Ahead 6 hr |
AP## | GFS Ensemble Member Forecast (## = 01 to 20) |
AEMN | GFS Ensemble Mean Forecast |
AEMI | Previous AEMN Forecast Interpolated Ahead 6 hr |
CMC | Canadian Global Model Forecast |
CMCI | Previous CMC Forecast Interpolated Ahead 6 hr |
COTC | U.S. Navy COAMPS-TC Model Forecast |
COTI | U.S. Navy COAMPS-TC Model Forecast Interpolated Ahead 6 hr |
COAL | U.S. Navy COAMPS-TC Model Forecast, Atlantic Basin |
COAI | Previous COAMPS-TC Atlantic Forecast Interpolated Ahead 6 hr |
COCE | U.S. Navy COAMPS-TC Model Forecast, E. Pacific Basin |
COEI | Previous COAMPS-TC E. Pacific Forecast Interpolated Ahead 6 hr |
EGRR / UKX | UKMET Model Forecast |
EGRI / UKXI | Previous UKMET Forecast Interpolated Ahead 6 hr |
EMX / ECMF | ECMWF Model Forecast (rare) |
EMXI | Previous ECMWF Forecast Interpolated Ahead 6 hr (rare) |
NAM | North American Mesoscale Model Forecast |
NAMI | Previous NAM Forecast Interpolated Ahead 6 hr |
NGPS / NGX | U.S. Navy NOGAPS Model Forecast |
NGPI / NGXI | Previous NOGAPS Forecast Interpolated Ahead 6 hr |
NVGM | U.S. Navy NAVGEM Model Forecast |
NVGI | Previous NAVGEM Forecast Interpolated Ahead 6 hr |
Limited-Area Dynamical Models
These identifiers represent forecasts obtained from weather forecast
models that solve mathematical equations that describe how wind,
temperature, and moisture evolve within the atmosphere. Unlike the
"Dynamical Models" above, however, these models forecast the weather
only over a small portion of the globe and are specifically developed to
forecast tropical storms and hurricanes.GFDL | GFDL Hurricane Model Forecast Track/Intensity |
GFDI | Previous GFDL Forecast Interpolated Ahead 6 hr |
GHMI | Previous Intensity-Modified GFDL Forecast Interpolated Ahead 6 hr |
GFDT | GFDL Forecast Using a Different Vortex Tracking Algorithm |
GFTI | Previous GFDT Forecast Interpolated Ahead 6 hr |
GFDN | Navy-Initialized Version of the GFDL Hurricane Model |
GFNI | Previous Navy-Initialized GFDL Forecast Interpolated Ahead 6 hr |
GFDE | Extrapolated GFDL Forecast |
HWRF | HWRF Hurricane Model Forecast Track/Intensity |
HWFI | Previous HWRF Forecast Interpolated Ahead 6 hr |
Consensus Models
These identifiers represent forecasts obtained from the average, or
consensus, of multiple weather forecast model track and/or intensity
forecasts. Simple averaging, weighted averaging, and bias-corrected
averaging procedures may be used, depending upon the consensus model in
question.IVCN | Variable Intensity Consensus of DSHP, LGEM, HWFI, GHMI, and GFNI Models |
GUNA | Consensus of AVNI, GFDI, EGRI and NGPI Model Track Forecasts |
CGUN | Bias-Corrected GUNA Forecast |
TCON / TCOE | Consensus of AVNI, EGRI, NGPI, GHMI, and HWFI Model Track Forecasts |
TCOA | Consensus of AVNI, EGRI, GHMI, and HWFI Model Track Forecasts |
TCCN | Bias-Corrected TCON Forecast |
TVCN | Variable Consensus of AVNI, EGRI, EMXI, NGPI, GHMI, HWFI Model Track Forecasts |
TVCE | Variable Consensus of AVNI, EGRI, EMXI, NGPI, GHMI, GFNI, HWFI Model Track Forecasts |
TVCA | Variable Consensus of AVNI, EGRI, EMXI, GHMI, GFNI, HWFI Model Track Forecasts |
TVCC | Bias-Corrected TVCN Forecast |
RYOC / MYOC | Forecaster-Generated Consensus Guidance (rare) |
Statistical and Statistical-Dynamical Models
These identifiers represent forecasts obtained from weather forecast
models that solve statistical equations that describe how a tropical
storm or hurricane moves and/or changes intensity in response to
climatology and/or present and forecast weather conditions in its
proximity. These models are less complex than the "Dynamical Models" and
"Limited-Area Dynamical Models" described above; however, many of them
are as skillful, if not more skillful, than the more complex models.A98E | NHC-98 Track Model (old, unreliable) |
BAMD | Deep-Layer Beta and Advection Model Track Forecast |
BAMM | Medium-Layer Beta and Advection Model Track Forecast |
BAMS | Shallow-Layer Beta and Advection Model Track Forecast |
CLIP | 72-hr Climatology and Persistence Track Forecast |
CLP5 | 120-hr Climatology and Persistence Track Forecast |
LBAR | Limited Area Barotropic Model Track Forecast (old, unreliable) |
LGEM | Logistical Growth Error Model Intensity Forecast |
SHFR | 72-hr SHIFOR Model Intensity Forecast |
SHF5 | 120-hr SHIFOR Model Intensity Forecast |
DSHF | 120-hr Decay SHIFOR Model Intensity Forecast |
SHIP | SHIPS Model Intensity Forecast |
DSHP | Decay SHIPS Model Intensity Forecast |
DRCL | DeMaria Climatology and Persistence Model Intensity Forecast |
MRCL | McAdie Climatology and Persistence Model Intensity Forecast |
RI## | Rapid Intensification Aid (## = 25, 30, 35, 40) |
Experimental Models (HFIP Stream 1.5)
From time to time, additional models in the Hurricane Forecast
Improvement Program, or HFIP, quasi-operational "Stream 1.5" may appear
within the guidance products. The identifiers below represent forecasts
from models that NHC forecasters are currently evaluating for possible
future use in actual NHC forecast operations. The most up-to-date
information on these experimental products may always be found at the HFIP Home Page.FIM9 | Finite-Volume Icosahedral Model Forecast |
FM9I | Previous FIM9 Forecast Interpolated Ahead 6 hr |
CTCX | Experimental U.S. Navy COAMPS-TC Model Forecast |
CXTI | Previous Experimental COAMPS-TC Forecast Interpolated Ahead 6 hr |
HWFH | Experimental NOAA/HRD HWRF Forecast |
HWHI | Previous Experimental NOAA/HRD HWRF Forecast Interpolated Ahead 6 hr |
GP## | GFDL Ensemble Member Forecast (## = 00 to 09) |
GPMN | GFDL Ensemble Mean Forecast |
GPMI | Previous GFDL Ens. Mean Forecast Interpolated Ahead 6 hr |
HHYC | HWRF with HYCOM Ocean Model |
HHYI | Previous HWRF with HYCOM Ocean Model Forecast Interpolated Ahead 6 hr |
HW## | HWRF Ensemble Member Forecast (## = 00 to 20) |
HWMN | HWRF Ensemble Mean Forecast |
HWMI | Previous HWRF Ens. Mean Forecast Interpolated Ahead 6 hr |
UWN4 | University of Wisconsin NMS Model Forecast |
UW4I | Previous UW NMS Forecast Interpolated Ahead 6 hr |
TV15 | Consensus of Available HFIP Stream 1.5 Model Forecasts |
MMSE | FSU Multimodel Superensemble |
SPC3 | Statistical Prediction of Intensity Forecast (six members) |
Early Versus Late Models
The National Hurricane Center and other official tropical cyclone
forecast centers make use of two different forms of dynamical model
guidance during the forecast process: "early" and "late" models.
Numerical models are typically run four times per day: 0000, 0600, 1200,
and 1800 UTC. These times correspond to 8 pm, 2 am, 8 am, and 2 pm EDT,
respectively. However, National Hurricane Center official forecasts are
issued at 0300, 0900, 1500, and 2100 UTC. These times correspond to 11
pm, 5 am, 11 am, and 5 pm EDT, respectively. Ideally, model forecasts
from the 0000 UTC cycle would be available to help make the 0300 UTC
forecast (for example); however, as modern numerical weather prediction
models typically require several hours to complete a given forecast
cycle, this is often not possible.To alleviate this, model forecasts from the previous cycle, or 1800 UTC in our current example, are shifted forward in time by 6 hr. This results in what is known as an interpolated, or "early", model that is available at 0000 UTC for forecasters to use when preparing the 0300 UTC forecast. The actual 0000 UTC model forecast, arriving after the 0300 UTC forecast must be made, is known as a "late" model forecast. As you might expect, "late" model forecasts thus form the basis for the subsequent "early" model forecasts. In the lists above, "early" models are those whose designators end in an I (e.g., AVNI, CMCI, etc.). "Late" models have no such notation. Please note that all consensus, statistical, and statistical-dynamical guidance is classified as "early" guidance and is often derived from "early" model output.
Disclaimer: The data displayed here are informational only and should NOT be used for making life and death decisions. Always take the word of official sources - the National Hurricane Center and your local National Weather Service office - when preparing for any potential storm impact. If anything on these plots causes confusion, disregard the information in its entirety. The availability, timeliness, and reliability of these data are not guaranteed, and no liability is implied or expressed by your use of this website.
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