Table 6.26 -- EDCS Attributes whose label begins with W
| Label | Definition | Attribute value type | EQ label | Related concepts | Code |
| WAKE_INTENSITY | The fraction of maximum production rate of surface wakes induced by ship movement relative to surface waves and currents. The following interpretations may be applied: 1/4: Small, 2/4: Medium, 3/4: Large, 4/4: Maximum. | REAL | PURE_NUMBER | 1280 | |
| WALL_TYPE | The type of a wall. | ENUMERATION | 1281 | ||
| WARNING_SIGNAL_STATION_TYPE | The type of a warning signal station. | ENUMERATION | 1282 | ||
| WATER_BOTTOM_MORPHOLOGY | The morphology of the bottom of hydrographic objects, e.g., lakes and oceans. | ENUMERATION | 1283 | ||
| WATER_BOTTOM_OBJECT_TYPE | Type of an object that is located on the bottom of hydrographic objects, e.g., lakes and oceans. | ENUMERATION | 1284 | ||
| WATER_CURRENT_SPEED | The speed of water flow (current). | REAL | VELOCITY | 1285 | |
| WATER_CURRENT_TYPE | The type of a current (horizontal movement of a body of water). | ENUMERATION | 1286 | ||
| WATER_DEPTH | The depth of the water from a specified vertical datum to the sea floor. Recorded values are positive numbers. | REAL | LENGTH | EA SOUNDING_DATUM, EA VERTICAL_DATUM | 1287 |
| WATER_DEPTH_RANGE | Predominant water depth within delineation of an object, determined at the greatest depth along a cross section of the object. | ENUMERATION | 1288 | ||
| WATER_LEVEL_EFFECT | The type of effect of surrounding water. | ENUMERATION | 1289 | ||
| WATER_QUALITY | The type of drinking quality of water. | ENUMERATION | 1290 | ||
| WATER_TABLE_DEPTH_RANGE | Range of average depth of a zone of saturation except where bounded by an impermeable body in which no water table exists. | ENUMERATION | 1291 | ||
| WATER_TYPE | The type of available water. | ENUMERATION | 1292 | ||
| WATER_VAPOR_PRESSURE | The partial pressure of water vapour in the atmosphere. | REAL | PRESSURE | 1293 | |
| WAVE_SPECTRAL_DENSITY | The power represented by a spectrum of waves at a particular centre frequency and centre direction. | REAL | POWER | 1294 | |
| WAVE_WHITECAP_RATE | The fraction of waves bearing whitecaps on their crests due to wind. | REAL | PURE_NUMBER | 1295 | |
| WAVELENGTH | The distance in a periodic wave between two points of corresponding phase in consecutive cycles. | REAL | LENGTH | 1296 | |
| WAYPOINT_TYPE | The type of a named waypoint. | ENUMERATION | 1297 | ||
| WEATHER_MSRMNT_TECHNIQUE | The technique or method of weather measurement. | ENUMERATION | 1298 | ||
| WEATHER_TYPE | The type of weather reported. | ENUMERATION | 1299 | ||
| WELL_TYPE | The type of a well. | ENUMERATION | 1300 | ||
| WET_BULB_AIR_TEMPERATURE | The temperature of the air sensed by a thermometer fixed in the centre of a globe. | REAL | THERMO_TEMPERATURE | 1301 | |
| WET_GAP_WIDTH | The wet gap width at low tide. | REAL | LENGTH | 1302 | |
| WET_SOIL_TRAFFICABILITY | The USCS soil type further categorized by their wet weather trafficability characteristics. | ENUMERATION | 1303 | ||
| WETLAND_SURFACE_FORM | The surface landform of a wetland. | ENUMERATION | 1304 | ||
| WIDTH | The length of the shorter of two linear axes. For a square object, measure either axis. For a round object, width shall be equal to length. For a bridge, the width is the measurement perpendicular to the axis between the abutments. | REAL | LENGTH | 1305 | |
| WIND_ABSOLUTE_VORTICITY | The rate of the circular motion, around a vertical axis, of the air. | REAL | ANGULAR_VELOCITY | 1306 | |
| WIND_CALM_RATE_CLIM | The fraction of wind speeds less than 2,575 metres per second (five knots). | REAL | PURE_NUMBER | 1307 | |
| WIND_CIRCULARITY_COEFF_CLIM | The historical quantity of the ratio of the standard deviation of the component along the major axis to the standard deviation of the component along the minor axis. | REAL | PURE_NUMBER | 1308 | |
| WIND_CORRECTION_TECHNIQUE | The type of wind correction technique that was applied to a rocket sounding. | ENUMERATION | 1309 | ||
| WIND_DIRECTION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction from which the wind is expected to blow. | REAL | PLANE_ANGLE | 1310 | |
| WIND_DIRECTION_CLIM | The mean historical horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction from which the wind is blowing. | REAL | PLANE_ANGLE | 1311 | |
| WIND_DIRECTION_OCTANT_CLIM | The historical cardinal wind vector octant (a 45 arc degree sector centred on a cardinal direction). | ENUMERATION | 1312 | ||
| WIND_DIRECTION_QUALITY | The quality status of a wind direction. | ENUMERATION | EA WIND_DIRECTION | 1313 | |
| WIND_DIRECTION_REPORTS | The fraction of observations reporting wind directions within a 45 arc degree sector. | REAL | PURE_NUMBER | 1314 | |
| WIND_DIVERGENCE_RATE | The rate of horizontal expansion of the vector wind components. | REAL | RATE | 1315 | |
| WIND_EQUIPMENT_TYPE | The type of measuring equipment used for a wind observation. | ENUMERATION | 1316 | ||
| WIND_GALE_FORCE_RATE_CLIM | The fraction of historical gale force winds (greater than or equal to 17,49 metres per second (34 knots)). | REAL | PURE_NUMBER | 1317 | |
| WIND_GUST_SPEED | The speed of brief surges of wind that move significantly faster than the average wind speed. | REAL | VELOCITY | 1318 | |
| WIND_INDUCED_WAVE_DIRECTION | The horizontal angle, measured in a clockwise direction from above, from planetary geodetic north to the direction from which the wind waves are arriving. | REAL | PLANE_ANGLE | 1319 | |
| WIND_RELATIVE_VORTICITY | The rate of the circular motion, around a vertical axis, of the air relative to the planet. | REAL | ANGULAR_VELOCITY | 1320 | |
| WIND_RESPONSE | The fraction of maximum response to wind speed/direction. The following interpretations may be applied: 1/4: Small, 2/4: Medium, 3/4: Large, 4/4: Maximum. | REAL | PURE_NUMBER | 1321 | |
| WIND_SPECCLS_IDENTIFIER | The numeric identifier of a spectral class for wind-induced acoustic noise; used for linking to an external database or reference. | INDEX | 1322 | ||
| WIND_SPEED | The rate of horizontal travel of air past a fixed point. | REAL | VELOCITY | 1323 | |
| WIND_SPEED_20_PRCNTL_CLIM | The minimum wind speed that is greater than 20 percent of the historical wind speed observations. | REAL | VELOCITY | 1324 | |
| WIND_SPEED_50_PRCNTL_CLIM | The minimum wind speed that is greater than 50 percent of the historical wind speed observations. | REAL | VELOCITY | 1325 | |
| WIND_SPEED_80_PRCNTL_CLIM | The minimum wind speed that is greater than 80 percent of the historical wind speed observations. | REAL | VELOCITY | 1326 | |
| WIND_SPEED_CLIM | The mean historical rate of horizontal travel of air past a fixed point. | REAL | VELOCITY | 1327 | |
| WIND_SPEED_CLIM_STDV | The quantity of the standard deviation of the historical wind speed. | REAL | VELOCITY | 1328 | |
| WIND_SPEED_DIR_REPORT_COUNT | The number of reports with both wind speed and direction values. | COUNT | 1329 | ||
| WIND_SPEED_E_W_CLIM | The mean historical rate of horizontal travel of air in the east-west direction. | REAL | VELOCITY | 1330 | |
| WIND_SPEED_E_W_CLIM_STDV | The quantity of the standard deviation of historical wind speeds in the east-west direction. | REAL | VELOCITY | 1331 | |
| WIND_SPEED_N_S_CLIM | The mean historical rate of horizontal travel of air in the north-south direction. | REAL | VELOCITY | 1332 | |
| WIND_SPEED_N_S_CLIM_STDV | The quantity of the standard deviation of historical wind speed in the north-south direction. | REAL | VELOCITY | 1333 | |
| WIND_SPEED_OCTANT_CLIM | The mean rate of travel of historical winds in an octant (a 45 arc degree sector centred on a cardinal direction). | REAL | VELOCITY | 1334 | |
| WIND_SPEED_OCTANT_OCRN_CLIM | The fraction of occurrence of historical winds in an octant (a 45 arc degree sector centred on a cardinal direction), to wind occurrence in all sectors during the measurement period. | REAL | PURE_NUMBER | 1335 | |
| WIND_SPEED_ONLY_COUNT | The number of reports with wind speed value only. | COUNT | 1336 | ||
| WIND_SPEED_QUALITY | The quality status of a wind speed. | ENUMERATION | EA WIND_SPEED | 1337 | |
| WIND_SPEED_U | The rate of wind movement in the west-east direction. | REAL | VELOCITY | 1338 | |
| WIND_SPEED_U_ERROR | The potential error in the west-east component of a wind speed. | REAL | VELOCITY | 1339 | |
| WIND_SPEED_V | The rate of wind movement in the south-north direction. | REAL | VELOCITY | 1340 | |
| WIND_SPEED_V_ERROR | The potential error in the south-north component of a wind speed. | REAL | VELOCITY | 1341 | |
| WIND_SPEED_W | The vertical rate of movement of air relative to pressure coordinates. | REAL | PRESSURE_CHANGE_RATE | 1342 | |
| WIND_SPEED_W_SIGMA | The vertical rate of movement of air through a pressure surface normalized by the surface pressure. | REAL | RATE | 1343 | |
| WIND_TYPE | The character of the winds. | ENUMERATION | 1344 | ||
| WIND_VARIABLE_RATE_CLIM | The fraction of historical wind speeds of 2,575 metres per second (five knots) or greater. | REAL | PURE_NUMBER | 1345 | |
| WIND_VECTOR_SPEED_CLIM | The historical magnitude of the mean resultant wind vector. | REAL | VELOCITY | 1346 | |
| WINDCHILL_INDEX | The temperature with nearly still air that (ideally) produces the same rate of heat loss from the human body as the given combination of temperature and wind speed. | REAL | THERMO_TEMPERATURE | 1347 | |
| WINTER_CANOPY_COVER | The fraction of winter canopy closure within the delineated object's extent. | REAL | PURE_NUMBER | EA WINTER_CANOPY_COVER_RANGE | 1348 |
| WINTER_CANOPY_COVER_RANGE | A range indicating the fraction of winter canopy closure within the delineated object's extent. | ENUMERATION | EA WINTER_CANOPY_COVER | 1349 | |
| WIRE_COUNT | The number of wires associated with a structure, e.g., a power/communications line, or supporting pylon. | COUNT | 1350 | ||
| WMO_STATION_IDENTIFIER | The WMO meteorological station identifier number; coded as specified by WMO9A "Record Layout of the Station Data File", field 5. | STRING | 1351 | ||
| WOODY_VEG_DENSITY_RANGE | A range indicating the fraction of total ground surface covered by woody vegetation (e.g., trees, scrub, brush or bush) within the delineated object extents. | ENUMERATION | 1352 | ||
| WORK_IN_PROGRESS_TYPE | The type of work in progress. | ENUMERATION | 1353 | ||
| WORSHIP_HOUSE_TYPE | The type of a house of worship. | ENUMERATION | 1354 | ||
| WRECK_STATUS | The status of a wreck. | ENUMERATION | 1355 | ||
| WRECK_TYPE | The type of wreck as listed in a non-submarine contacts list; a non-submarine contact is any object, wreck, or other object on the sea floor that could be mistakenly identified as an operable submarine when detected with acoustic or magnetic sensors. | ENUMERATION | 1356 |