1) South
or
2) Snow
- Browse Related Terms: Ablation, Avalanche, Bowen Ratio, Bright Band, BS, Cryology, Diamond dust, Freshet, Graupel, Ground Blizzard Warning, Powder Snow, Quality of Snow, Radioisotope Snow Gage, s, Satellite Hydrology Program, SG, Small Hail, SN, Snow Density, Snow Stake, Snow Stick, Snow Water Equivalent, Snowboard, Snowflake, SWE, Weighing-Type Precipitation Gage, Yellow Snow
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These were in use as network radars in the National Weather Service prior to the installation of the WSR 88-D radars. They were 10-centimeter wavelength radars.
- Browse Related Terms: 88D, AMVER/SEAS, Congressional Organic Act of 1890, NAVTEX Forecast, NOAA Weather Radio, NWR, NWSH, Pan Pan, S-Band Radar, Securite, SIGWX, Wind Waves, WX
Shortwave - a disturbance in the mid or upper part of the atmosphere which induces upward motion ahead of it. If other conditions are favorable, the upward motion can contribute to thunderstorm development ahead of a shortwave.
- Browse Related Terms: AHD, S/W, S/WV, Shortwave, Shortwave Trough, SHRTWV
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Shortwave - a disturbance in the mid or upper part of the atmosphere which induces upward motion ahead of it. If other conditions are favorable, the upward motion can contribute to thunderstorm development ahead of a shortwave.
- Browse Related Terms: AHD, S/W, S/WV, Shortwave, Shortwave Trough, SHRTWV
Inmarsat-C SafetyNET is an internationally adopted, automated satellite system for promulgating weather forecasts and warnings, marine navigational warnings and other safety related information to all types vessels and is part of the Global Maritime Distress and Safety System (GMDSS).
- Browse Related Terms: GMDSS, NAVTEX, PRVD, SafetyNET, SITOR, WWV, WWVH
This scale was developed in an effort to estimate the possible damage a hurricane's sustained winds and storm surge could do to a coastal area. The scale of numbers are based on actual conditions at some time during the life of the storm. As the hurricane intensifies or weakens, the scale number is reassessed accordingly. The following table shows the scale broken down by central pressure, winds, and storm surge:
Category Central Pressure (mb) Wind Speed (mph) Storm Surge (ft.) Damage 1 980 or > 74 - 95 4 - 5 Minimal 2 965 - 979 96 - 110 6 - 8 Moderate 3 945 - 964 111 - 130 9 - 12 Extensive 4 920 - 944 131 - 155 13 - 18 Extreme 5 < 920 > 155 > 18 Catastrophic - Browse Related Terms: Blustery, Breezy, Brisk, Diablo Wind, High Wind, Major Hurricane, Saffir-Simpson Scale, Severe Thunderstorm, Very Windy, Windy
All > Science > Weather > Hurricane Weather
The Saffir-Simpson Hurricane Wind Scale is a 1 to 5 categorization based on the hurricane's intensity at the indicated time. The scale provides examples of the type of damage and impacts in the United States associated with winds of the indicated intensity. The following table shows the scale broken down by winds:
Category Wind Speed (mph) Damage 1 74 - 95 Very dangerous winds will produce some damage 2 96 - 110 Extremely dangerous winds will cause extensive damage 3 111 - 129 Devastating damage will occur 4 130 - 156 Catastrophic damage will occur 5 > 156 Catastrophic damage will occur A detailed description of the Saffir-Simpson Hurricane Wind Scale is available at http://www.nhc.noaa.gov/aboutsshws.php.
- Browse Related Terms: Advisory, Best Track, center, Hurricane Local Statement, Inundation, National Geodetic Vertical Datum (NGVD) of 1929 [NGVD 1929], Post-storm Report, Preliminary Report, Present Movement, Relocated, Saffir-Simpson Hurricane Wind Scale, Storm Surge, Storm Tide
In oceanography, conductivity is measured and converted to salinity by a known functional relationship between the measured electrical conductivity of seawater temperature and pressure.
- Browse Related Terms: Altimeter, Aneroid barometer, Barogram, Barometer, Barometric Pressure, Disdrometer, Element, Mesohigh, Microbarograph, PRES, Pressure Altimeter, Refractivity, Salinity (SAL), Sounding, Standard Atmosphere
(Specific Area Message Encoding) - A tone alert system which allows NOAA Weather Radio receivers equipped with the SAME feature to sound an alert for only certain weather conditions or within a limited geographic area such as a county.
- Browse Related Terms: Coastal/Lakeshore Flood Advisory, Coastal/Lakeshore Flood Warning, Coastal/Lakeshore Flood Watch, CSTL, High Surf Advisory, High Surf Warning, MSG, SAME
Storm and Mesoscale Ensemble Experiment
- Browse Related Terms: AFTN, CMPLX, Heat Exhaustion, MCC, MCS, Mesoscale, Mesoscale Convective Complex, Mesoscale Convective System, Misoscale, PRST, SAMEX, SQLN, Stepped Leader, Storm Scale
The rate at which sensor data is read or sampled.
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Particles of sand carried aloft by strong wind. The sand particles are mostly confined to the lowest ten feet, and rarely rise more than fifty feet above the ground.
- Browse Related Terms: Aeroallergens, Blowing Dust or Sand, Dust Storm, Fall Wind, Firebrand, Mesoscale High Winds, Plume-dominated Fire, Ribbon Lightning, Sandstorm, Santa Ana Wind, Spotting
In southern California, a weather condition in which strong, hot, dust-bearing winds descend to the Pacific Coast around Los Angeles from inland desert regions.
- Browse Related Terms: Aeroallergens, Blowing Dust or Sand, Dust Storm, Fall Wind, Firebrand, Mesoscale High Winds, Plume-dominated Fire, Ribbon Lightning, Sandstorm, Santa Ana Wind, Spotting
Ridges of snow formed on a snow field by the action of the wind.
- Browse Related Terms: cM, GND, RDG, Sastrugi, Snow Core, Snow Cornice, Snow Depth, Snow Pack, Snowcover, Snowpack
A NOHRSC program that uses satellite data to generate areal extent of snow cover data over large areas of the western United States.
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The vapor pressure of a system, at a given temperature, wherein the vapor of a substance is in equilibrium with a plane surface of that substance's pure liquid or solid phase.
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Supplementary Aviation Reporting Station - the SAWRS program addresses the concerns of users who depend on weather observations for air operations. If the cooperator is collocated with a commissioned automated system, they ensure continuity during outage periods of the automated system. The requirement for a SAWRS arises from the FAA validated need for observations to satisfy FAR 121 or 135 operations or for the safe conduct of other aircraft.
- Browse Related Terms: alert, AMVER, ASOS, Augmented report, Automated Report, AWOS, Present weather, PTYPE, RAWS, Remote Observing System Automation, ROSA, SAWRS
Surface Based CAPE; CAPE calculated using a Surface based parcel.
- Browse Related Terms: CAPE, Capping, CIN, Convective Boundary Layer, Convective Inhibition, Equilibrium Level, Level of Free Convection, LFC, Lid, MLCAPE, MLLI, Positive Area, Regional Haze, Residual Layer, SBCAPE, Showalter Index, Summation Principle