Highs, lows, fronts, troughs, outflow boundaries, squall lines, drylines for much of North America, the Western Atlantic and Eastern Pacific oceans, and the Gulf of America. Standard Size | High Resolution. Maximum daytime or minimum overnight temperature in degrees Fahrenheit.

account_box Log in Go Ad Free settings Settings Sensor Network Maps & Radar Severe Weather News & Blogs Mobile Apps Historical Weather. Search close gps_fixed. gps_fixedFind Nearest Station .

When the weather is dry, tranquil and nice, you can typically thank high pressure systems for keeping stormy and rainy weather at bay. A high pressure system is essentially a clockwise...

Apr 11, 2025 · A surface high pressure system and often fair weather typically are located ahead (east) of an upper ridge axis with lower surface pressure behind (west of) the ridge. Troughs and ridges can be weak or quite strong.

A weather front is a boundary separating air masses for which several characteristics differ, such as air density, wind, temperature, and humidity. Disturbed and unstable weather due to these differences often arises along the boundary.

Clouds, precipitation, and high winds are generally associated with lower pressures. In the norther hemisphere, airflow will circulate counter-clockwise around an area of low pressure. A cold front occurs when a mass of cold air approaches and displaces the warmer air. The warm air is forced up to higher elevations.

Highs are middle-scale meteorological features that result from interplays between the relatively larger-scale dynamics of an entire planet's atmospheric circulation. The strongest high-pressure areas result from masses of cold air which spread out …

Change in weather parameters (temperature, dewpoint, surface pressure, etc) over the last 1/3/6/24 hours. Data is provided from the Real-Time Mesoscale Analysis (RTMA) or the Rapid Refresh (RAP).

The 36 hour Surface Analysis map shows current weather conditions, including frontal and high/low pressure positions, satellite infrared (IR) cloud cover, and areas of precipitation.

Meteorologist Josh Knight explains how our weather is affected by different weather patterns including high pressure, low pressure, cold, and warm fronts.