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A tropical savanna is a grassland biome located in semi-arid to semi-humid climate regions of subtropical and tropical latitudes, with average temperatures remaining at or above 18 °C (64 °F) all year round, and rainfall between 750 millimetres (30 in) and 1,270 millimetres (50 in) a year.
The Gulf and South Atlantic states have a humid subtropical climate with mostly mild winters and hot, humid summers. Most of the Florida peninsula including Tampa and Jacksonville, along with other coastal cities like Houston, New Orleans, Savannah, Charleston and Wilmington all have average summer highs from near 90 to the lower 90s F, and lows generally from 70 to 75 °F (21 to 24 °C ...
If the annual precipitation is less than 50% of this threshold, the classification is BW (arid: desert climate); if it is in the range of 50%–100% of the threshold, the classification is BS (semi-arid: steppe climate). [9] [11] A third letter can be included to indicate temperature.
The summer dry season normally runs from May through October, when clear skies, hot temperatures, and very little change in sensible weather occur from day to day. Average high temperatures are in the lower 80's F (26-28 C) with overnight lows in the lower 60's F (15-17 C).
The cool offshore, enhanced by upwelling of cold sub-surface waters, often creates summer fog near the coast, creating a warm-summer Mediterranean climate (Köppen climate classification Csb). Farther inland, the climate becomes more continental , with some areas turning semi-arid (Köppen BSk ), with colder winters and markedly hotter summers.
If the area's annual precipitation in millimeters is less than the threshold but more than half or 50% the threshold, it is classified as a BS (steppe, semi-desert, or semi-arid climate). [2] Furthermore, to delineate hot semi-arid climates from cold semi-arid climates, a mean annual temperature of 18 °C (64.4 °F) is used as an isotherm.
Examples of this climate are the coastal areas of Southern Africa and the west coast of South America. [15] The humid subtropical climate is often on the western side of the subtropical high. Here, unstable tropical airmasses in summer bring convective overturning and frequent tropical downpours, and summer is normally the season of peak annual ...
Despite being the mildest on average, the winter climate was a crucial contributing factor of the Challenger disaster on January 28, 1986, in which overnight temperatures at Titusville, adjacent to the Kennedy Space Center, had dropped as low as 24°F [16] and were still below freezing at 28.0°F to 28.9°F on launch day. The severe cold had ...