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July 26, 2020
Snow and lightweight drizzle both produce radar reflectivity with about the identical worth. Melting snow and moderate rain even have related values. Very high reflectivity’s (the greys on the dimensions on the image above) are always associated with hail.
Tornadoes are often situated at the heart of a hook-formed echo on the southwest facet of thunderstorms. The hook is best observed within the reflectivity area. This image exhibits a reflectivity field containing a number of hook echoes associated with thunderstorms that occurred in Tennessee and Kentucky on May 18, 1995. Normally, it’s difficult to tell apart precipitation sort on the basis of the radar reflectivity alone.
The leading edge of an advancing hotter air mass, the passage of which generally brings cloud and precipitation followed by increasing temperature and/or humidity. The forefront of an advancing colder air mass. Its passage is normally marked by cloud and precipitation, adopted by a drop in temperature and/or humidity. This picture shows the different scales on which snow can happen. The large snow band extending throughout the determine is associated with a big storm system transferring across the country.
This picture exhibits the reflectivity subject from the attention wall of Hurricane Andrew. The symmetry proven on this picture indicates that Andrew was a very nicely developed hurricane. The ring of orange are the high reflectivities related to the convection discovered within the eye wall.
If the flow is from north to south, the climate will be genreally collder than normal. If the move is from south to north, the weather will be warmer than regular. Contours of equal imply sea-level pressure (MSLP), measured in hectopascals (hPa). MSLP maxima (anticyclones) and minima (depressions) are marked by the letters H (High) and L (Low) on climate charts.