Weather Radar Specific Differential Phase (KDP) from KRAX - Raleigh/Durham, NC

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Page opened/refreshed: May 19, 2026 12:12:14 EDT  


Specific Differential Phase is a measurement of difference between the horizontal and vertical pulse phase changes as they travel through the atmosphere. Interpreting Specific Differential Phase (KDP) can be very difficult. Its primary use involves detecting areas of heavy rain. KDP values are largest when going through areas dominated by large raindrops. In some cases, regions with high KDP values may also contain melting hail. The four lowest elevation angles are available.

NEXRAD Radar KRAX status: Operate [last data 0:00:16 h:m:s ago]
as of Tue, 19-May-2026 12:12pm EDT

Message date: Mon, 18-May-2026 1:40pm EDT
The KRAX radar has returned to service.

Message date: Sun, 17-May-2026 6:25pm EDT
The KRAX WSR-88D is unavailable due to a mechanical issue. Technicians have been notified and will examine the situation. A return to service time is unknown.

NWS WSR-88D NEXRADView


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