National Weather Service United States Department of Commerce

Moderate Risk of Excessive Rainfall in Central Texas. Enhanced Risk of Severe Thunderstorms in the Plains; Flood Watches in the Mid-Atlantic. Extreme Heat in the Southwest

A Moderate Risk of flash flooding has been issued for central Texas for ongoing impactful flash flooding, which may hamper recovery efforts. An enhanced risk of severe thunderstorms in effect for portions of the Plains today. Severe wind gusts and damaging hail are the main threats. T.D. Chantal continues across the Mid-Atlantic with local flash flooding possible. Extreme heat in the West. Read More >

 

 


Texas propagation map North
Texas propagation map South

 

Coverage Map Notes

The coverage statistics and maps are calculated using a computer model and station data assuming ideal conditions. Coverage may be 5 to 10 percent below the computer predicted coverage for the following reasons:

  • The computer model is sensitive to antenna performance. Antenna performance is a function of local conditions, causing signals to be stronger signal level in some directions than others.
  • Placement of NWR antennas is dictated by the tower owner, which may result in a less than ideal set up.
  • The antenna may be affected by nearby structures or bodies of water.
  • In some special instances, the antenna may have been intentionally adjusted to be "directional" and provide better coverage to a specific area to the detriment of other areas.
  • Because of variations in local site conditions, the performance of an individual transmitter and antenna may be less than predicted or expected.
  • Seasonal environmental conditions, such as icing or heavy rain, affect performance of a transmitter station and its various components, particularly those subject to continuous weather exposure.
  • The coverage maps are shown in a single color format, which relates to an estimated signal level.
    • White: Signal level of greater than 18dBuV: Reliable coverage