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PHOENIX - The National Weather Service says parts of the state, including Phoenix, can expect record-breaking heat in the days ahead.. The high was 109°F on Thursday. Temps are expected to be 110 ...
Map of regions covered by the 122 Weather Forecast Offices. The National Weather Service operates 122 weather forecast offices. [1] [2] Each weather forecast office (WFO or NWSFO) has a geographic area of responsibility, also known as a county warning area, for issuing local public, marine, aviation, fire, and hydrology forecasts.
The heat index (HI) is an index that combines air temperature and relative humidity, in shaded areas, to posit a human-perceived equivalent temperature, as how hot it would feel if the humidity were some other value in the shade. For example, when the temperature is 32 °C (90 °F) with 70% relative humidity, the heat index is 41 °C (106 °F ...
After remaining steady in intensity for a while due to its broad size and some entrainment of drier air to its west, Helene recovered quickly and began its rapid intensification early on the morning of September 26 – aided by low mid-level wind shear, high relative humidity values and sea surface temperatures (SSTs) exceeding 30 °C (86 °F ...
UPDATE: Look for heat index values up to 111 degrees until Saturday night. On Friday at 12:38 p.m. an updated excessive heat warning was issued by the NWS Fort Worth TX. The warning is for Grayson ...
A heat advisory is issued in Palm Beach County if the heat index is forecast to reach 108 degrees or higher for at least two consecutive hours. An excessive heat warning is issued when the heat ...
www.weather.gov /nwr /. NOAA Weather Radio (NWR), also known as NOAA Weather Radio All Hazards, is an automated 24-hour network of VHF FM weather radio stations in the United States that broadcast weather information directly from a nearby National Weather Service office. The routine programming cycle includes local or regional weather ...
An Excessive Heat Warning is issued if the heat index, which factors in humidity, is forecast to reach 105°F or higher for at least two consecutive days, with nighttime temperatures remaining ...