Seeding operations are restricted to areas which have a potential for the devlopment of rain showers and/or thunderstorms. Conditions favorable for shower/thunderstorm development include high relative humidities, instability in the atmosphere, and a triggering mechanism. Some common triggering mechanisms are fronts, dry lines, upper-level disturbances, or even just daytime heating. Seeding is not performed over counties which have flash flood or tornado warnings issued by the National Weather Service.

• This regional radar summary shows areas of precipitation, including the echo top and movement of individual cells.

• This US surface analysis shows general weather conditions for the entire country.

• This regional surface analysis gives a better look at area weather.

• This regional visible satellite image shows areas of cloud cover but is only useful during daylight hours.

• The Norman sounding shows the temperature and wind profiles in the upper atmosphere, and can be used to determine the potential for severe weather.

• The Oklahoma state forecast has the latest area forecasts from the Norman and Tulsa National Weather Service offices.  

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  Current Weather | Weather Links  

  Weather Links

   

  Government Sites

  National Weather Service	Storm Prediction Center
  National Climate Data Center	NWS Amarillo
  NWS Norman	NWS Tulsa

   

  University Sites

  Oklahoma Climatological Survey	Oklahoma rainfall update (OCS)
  Oklahoma Weather Roundup (OU)	ARPSView (CAPS)
  Real-Time Weather Data (NCAR)	WeatherNet (Michigan)
  National Drought Mitigation Center (Nebraska)	Agricultural Weather Center (Kentucky)

   

  Commercial Sites

  The Weather Channel	Intellicast
  USA Today	Weather Site
  The Weather Underground	EarthWatch
  Unisys	WX.com

   

   

   

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  Copyright © 1998-2000, Environmental Verification and Analysis Center

  Send comments or questions to Michael Klatt

  5/8/2000