Sunset Spikes

Thunderstorms and Heavy Rains Across Portions of the Central and Eastern US; Heat Expands to Portions of the East

Widespread showers and thunderstorms, some severe, may produce heavy downpours and flash flooding across much of the eastern and central U.S. Dangerous heat will continue in the Pacific Northwest and expand across portions of the East. Deep tropical moisture and associated thunderstorms will bring heavy rainfall and localized flash flooding across portions of Florida into the central Gulf Coast. Read More >

Monthly Variations in the Radar Sunset Spike

Often times, the rising or setting sun will show up on National Weather Service radar screens as a spike in the direction of the sun. Below you will see a series of images from the 1st of every month (in UTC time) since December 1, 2005 of the sunset spike as seen from the Louisville NWS radar. You can clearly see that the direction that the sun sets varies during the year, in the northwest during the summer and in the southwest in the winter.

Click here for a cool loop of the imagery (filesize 713kb). Let the loop fully download for the best effect.

1 December 2005

1 January 2006
January

1 February 2006

1 March 2006
March

1 April 2006
April

1 May 2006
May

1 June 2006
June

1 July 2006
July

1 August 2006
August

1 September 2006

1 October 2006
October

1 November 2006