------------------------------------------------------------------- NEXRAD Precipitation Bias Calculated from the Multi Precipitation Estimator for RADARS in the SERFC Area for 2013-05-18 22:00:00 GMT. ------------------------------------------------------------------- Radar ID Bias Based on #Pairs /Gage Sum /Radar Sum Z=(a)R^(b) ZR type ----- ---- -------- --------------------------- ---------- ------- AKQ 0.94 0005 hrs 12 / 2.76 / 2.92 200 1.6 Marshall-Palmer *No Radar Data AMX 0.94 0168 hrs 44 / 3.75 / 4.01 300 1.4 Convective BMX 0.98 0003 hrs 11 / 2.03 / 2.07 300 1.4 Convective BYX 0.87 0168 hrs 24 / 2.47 / 2.85 300 1.4 Convective CAE 0.57 0010 hrs 16 / 1.20 / 2.10 300 1.4 Convective CLX 0.84 0001 hrs 12 / 5.25 / 6.26 300 1.4 Convective DGX 0.94 0168 hrs 218 / 3.14 / 3.34 300 1.4 Convective EOX 1.00 ***** Manually Edited Bias ***** EVX 1.25 0168 hrs 107 / 2.52 / 2.01 300 1.4 Convective FCX 0.92 0001 hrs 17 / 1.48 / 1.61 300 1.4 Convective FFC 0.91 0002 hrs 12 / 1.80 / 1.97 300 1.4 Convective GSP 1.22 Current 15 / 1.31 / 1.08 300 1.4 Convective GWX 1.04 0168 hrs 128 / 3.03 / 2.91 300 1.4 Convective HTX 1.24 0002 hrs 13 / 1.89 / 1.53 300 1.4 Convective JAX 1.10 ***** Manually Edited Bias ***** JGX 1.10 ***** Manually Edited Bias ***** LTX 1.14 0168 hrs 54 / 2.46 / 2.16 300 1.4 Convective MHX 0.79 0005 hrs 12 / 2.42 / 3.07 300 1.4 Convective MLB 1.31 0168 hrs 89 / 3.75 / 2.87 300 1.4 Convective MOB 1.10 ***** Manually Edited Bias ***** MRX 1.60 0001 hrs 15 / 1.79 / 1.12 300 1.4 Convective MXX 0.85 0003 hrs 22 / 1.90 / 2.25 300 1.4 Convective NQA 1.59 0168 hrs 195 / 2.79 / 1.76 300 1.4 Convective OHX 1.03 0003 hrs 10 / 1.40 / 1.36 300 1.4 Convective RAX 1.00 ***** Manually Edited Bias ***** TBW 1.11 0168 hrs 71 / 3.04 / 2.75 300 1.4 Convective TLH 1.10 ***** Manually Edited Bias ***** VAX 1.10 ***** Manually Edited Bias ***** * The bias values are calculated from the MPE (Multi Precipitation Estimator) which uses 'pairs' of RADAR and rain gage data. MPE requires at least 10 gage/radar pairs in order to calculate a bias. The 'Based on' column shows how far in the past MPE went back to get the required number of pairs. Current refers to the current hour. * The final three columns show the number of pairs used to calculate the bias, and the sum of the gage and radar accumulations respectively. Bias above 1.00 indicates RADAR is under estimating precipitation. Bias below 1.00 indicates RADAR is over estimating precipitation. A bias of over 1.50 or under 0.50 may be reason for investigation. * Manual overides to computed biases are flagged in the report. * Missing DPAs (Digital Precipitation Arrays) from the RADARS are flagged in the report.