113 JD - Note These files run 09Z JD to 09Z JD+1
Started: Wed Apr 23 19:45:00 GMT 2003

@ Operations

Keywords:
@ Hail
@ AP
@ Heavy Rain

Notes:
% 1945 Start ops
% 2029 big differences in the Precip algs (see snapshots).  Near 270/105 nm, there are differences of around 1 inchbetween the Kdp algs and Z_Zdr.
% 2100 20-21Z HCA appears to be working well  - hail areas agree with base data.
% 2230 several areas of multi-cellular storms; mostly just heavy rain, maybe some small hail; nothing particularly severe.
% 2237 3hr QPE to the NW (~280/160 km), Z-based algs considerably higher than Kdp (due to hail).  Just west (~250/60 km), Kdp algs higherthan Z alg.
% 2333 3.5 degrees, 306/64nm has 50 dBZ, Zdr ~0, and HCA = HR.
% 0009 deepest hail signature so far today; 199/50nm, up to 25kft.
% 0033 high Z (59 dBZ) at 0.5 degrees at 186/37nm along with high Zdr (3 dB); HCA = HR.  Storm has previously been showing hail.  ToldNWS about the change.
% 0050 storm just south of KOUN (170/30nm) has large hail areas on HCA above 0.5 degrees, but little or no hail at 0.0 & 0.5 degrees (Zdr~2-3 dB).
% 0056 storm just south of KOUN now has hail at 0.0 degrees (Zdr still ~2 dB but rhoHV ~0.95).
% 0057 strong hail signature at 164/29nm, 1.5 degrees: Z=63dbZ, Zdr=0.6, rhoHV=0.96
% 0117 2.5 degrees, 136/27nm: rhoHV "hole".
% 0142 strong hail signature at 198/58nm, 0.5 degrees: Z=65dBZ, Zdr= 0 dB, rhoHV=0.95
% 0154 very nice hail signature at 0.0 degrees at 192/51nm, Zdr "hole".
% 0236 rhoHV "hole" at 142/44nm, 2.5 degrees: rhoHV=0.78; Z=61dBZ, Zdr= -0.3.
% 0242 hail signature at 135/44nm at 1.5 degrees: Zdr= -1.4 dB, Z=65dBZ.
% 0247 hail signature at 133/48nm at 0.5 degrees: Zdr= -0.9 dB, Z=65dBZ, rhoHV= 0.91.
% 0253 AP labeled as hail by HCA: 171/46nm at 0.0 & 0.5 degrees.
% 0300 the bow echo has been steadly decreasing in intensity as it moves through eastern OK.
% 0415 End ops