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This image is in the public domain because it was stored on the web servers of the U.S. Storm Prediction Center, which is part of National Weather Service.NWS-created images are automatically public domain in the U.S. since the NWS is a part of the U.S. government.
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.
A high risk severe weather event is the greatest threat level issued by the Storm Prediction Center (SPC) for convective weather events in the United States. On the scale from one to five, a high risk is a level five; thus, high risks are issued only when forecasters at the SPC are confident of a major severe weather outbreak.
Convective outlooks are issued by the Storm Prediction Center in Zulu time (also known as Universal Coordinated Time or UTC). [29] The categories at right refer to the risk levels for the specific severe weather event occurring within 25 miles (40 km) of any point in the delineated region, as described in the previous section.
An intense low-pressure system produced widespread impacts across the United States in early March 2023. Additionally, an outbreak of 35 tornadoes affected 12 states from the Southern United States to the Great Lakes. In all, the storm system killed 13 people due to flooding and strong winds. At least 17 other people were injured.
A weaker Bermuda high typically allows storms to recurve away from the United States. But stronger ones have the opposite effect and can guide storms closer to U.S. shores.
The Weather Prediction Center (WPC), located in College Park, Maryland, is one of nine service centers under the umbrella of the National Centers for Environmental Prediction (NCEP), a part of the National Weather Service (NWS), which in turn is part of the National Oceanic and Atmospheric Administration (NOAA) of the U.S. Government.
The 1630 UTC day 1 outlook noted that a powerful derecho with embedded swaths of 80–110 miles per hour (130–180 km/h) straight-line winds was likely, along with embedded tornadoes – including the risk for strong (EF2+) tornadoes – and isolated instances of very large hail.