Search results
Results From The WOW.Com Content Network
Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
The scale of dBZ values can be seen along the bottom of the image. Decibel relative to Z, or dBZ, is a logarithmic dimensionless technical unit used in radar. It is mostly used in weather radar, to compare the equivalent reflectivity factor (Z) of a remote object (in mm 6 per m 3) to the return of a droplet of rain with a diameter of 1 mm (1 mm 6 per m 3). [1]
The generic term, Winter Weather Advisory (which replaced the previously used "Travelers Advisory"), is used for hazardous winter precipitation in the form of snow, freezing rain or freezing drizzle, sleet or blowing snow, or a combination of two or more precipitation types. The forecast accumulation criteria—defined below locally designated ...
"Doppler radar indicated heavy rain," the weather service said. ... The airport received 2.39 inches of rain Sunday, breaking the record for the calendar day last set on Feb. 4, 1990, when half an ...
For premium support please call: 800-290-4726 more ways to reach us
In addition, some NWS Weather Forecast Offices have instituted an enhanced flash flood warning, referred to as a flash flood emergency (or as termed by the Albany, New York office as a flash flood warning emergency [5]), which indicates a severe flooding situation in densely populated areas, similar to the procedure for declaring a tornado ...
When the rain starts to fall, people immediately look to the weather radar to see how long it will last. But when severe weather strikes, meteorologists can use this technology to pinpoint the ...
The Quantitative Precipitation Forecast (abbreviated QPF) is the expected amount of liquid precipitation accumulated over a specified time over a specified area. [115] A QPF will be specified when a measurable precipitation type reaching a minimum threshold is forecast for any hour during a QPF valid period.