Tropical Depression 01B
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Passive Microwave (PMW) Intensity Information Advanced Dvorak Technique Version 9.1 |
--Overpass-- --ARCHER-- Ring Ring Eye BT -Forecast-
Date Time Sat Lat Lon Diam Pct TbDiff Score Meaning Vmax Lat Lon
20230510 223021 SSMISF18 10.8 88.7 179 22% 2.69 -2.69 N/A 35.0 11.4 88.2 Analysis Plot
20230511 073824 AMSR2 11.4 88.2 23 28% 15.63 -15.63 N/A 45.0 11.6 88.1 Analysis Plot
20230511 093948 SSMISF18 11.8 87.8 46 22% 10.17 -10.17 N/A 45.0 11.8 88.1 Analysis Plot
20230511 113609 SSMISF16 12.0 88.1 101 39% 14.65 -14.65 N/A 45.0 12.0 88.1 Analysis Plot
20230511 122151 SSMISF17 12.1 88.1 101 38% 19.30 -19.30 N/A 45.0 12.1 88.1 Analysis Plot
20230511 195306 AMSR2 13.2 88.2 79 64% 4.38 4.38 N/A 60.0 13.2 88.1 Analysis Plot
20230511 221625 SSMISF18 13.1 88.1 79 57% 16.13 16.13 N/A 60.0 13.3 88.2 Analysis Plot
20230512 000618 GMI 13.5 88.1 N/A N/A N/A N/A N/A 60.0 13.3 88.2 Analysis Plot
20230512 005838 SSMISF17 13.4 88.2 46 61% 22.05 22.05 >65 kts 60.0 13.5 88.3 Analysis Plot
20230512 092758 SSMISF18 14.4 88.1 79 74% 21.47 21.47 >65 kts 75.0 14.3 88.4 Analysis Plot
20230512 112326 SSMISF16 14.6 88.4 68 60% 17.09 17.09 N/A 75.0 14.4 88.5 Analysis Plot
20230512 120904 SSMISF17 14.6 88.3 68 100% 31.08 46.08 >65 kts 75.0 14.4 88.6 Analysis Plot
20230512 132149 GMI 14.6 88.5 N/A N/A N/A N/A N/A 90.0 14.8 88.8 Analysis Plot
20230512 220244 SSMISF18 14.9 89.1 57 100% 43.32 58.32 >65 kts 110.0 15.5 89.0 Analysis Plot
20230512 235928 SSMISF16 15.1 89.6 57 100% 38.57 53.57 >65 kts 110.0 15.8 89.2 Analysis Plot
20230513 004405 SSMISF17 15.2 89.5 68 100% 44.31 59.31 >65 kts 110.0 15.9 89.3 Analysis Plot
20230513 072718 AMSR2 16.1 90.2 46 100% 39.01 54.01 >65 kts 115.0 16.4 89.9 Analysis Plot
20230513 091541 SSMISF18 16.4 90.3 46 100% 53.89 68.89 >85 kts 115.0 16.6 90.3 Analysis Plot
20230513 111055 SSMISF16 16.9 90.7 46 100% 79.92 94.92 >85 kts 115.0 16.9 90.5 Analysis Plot
20230513 122921 GMI 17.1 90.8 34 100% 51.58 66.58 >85 kts 115.0 17.1 90.6 Analysis Plot
20230513 193914 AMSR2 18.1 91.0 34 100% 73.28 88.28 >85 kts 130.0 18.5 91.4 Analysis Plot
20230513 214850 SSMISF18 18.2 91.1 34 100% 83.58 98.58 >85 kts 130.0 18.8 91.6 Analysis Plot
20230513 234457 SSMISF16 18.5 91.7 34 100% 63.51 78.51 >85 kts 130.0 19.2 91.8 Analysis Plot
20230514 002924 SSMISF17 18.5 91.6 34 100% 56.36 71.36 >85 kts 130.0 19.3 91.9 Analysis Plot
20230514 090323 SSMISF18 20.2 92.6 N/A N/A N/A N/A N/A 135.0 20.6 93.1 Analysis Plot
20230514 105848 SSMISF16 21.0 92.8 N/A N/A N/A N/A N/A 135.0 21.1 93.4 Analysis Plot
20230514 114340 SSMISF17 21.1 92.9 N/A N/A N/A N/A N/A 135.0 21.2 93.5 Analysis Plot
20230514 213442 SSMISF18 22.3 94.7 12 N/A 0.79 0.79 N/A 55.0 22.8 94.5 Analysis Plot
20230514 230047 GMI 23.0 94.7 N/A N/A N/A N/A N/A 55.0 22.9 94.6 Analysis Plot
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Legend - Overpass Date/Time are determined from satellite overpass of targeted TC (position determined from Best Track Lat/Lon position). Date is YYYYMMDD and time in HHMMSS (UTC). - Forecast (Best Track) and ARCHER positions (deg) of the TC center at overpass day/time. Positive/Negative: Latitude = North/South Hemisphere; Longitude = Eastern/Western Hemisphere. - BT Vmax is the concurrent ATCF Best Track (BT) wind speed intensity estimate (Vmax) value from either NOAA/National Hurricane Center (NHC) (North Atlantic and Northeast Pacific), NOAA/Central Pacific Hurricane Center (CPHC) (North-central Pacific) or Joint Typhoon Warning Center (JTWC) (Northwest Pacific, Indian Ocean, or Southwest Pacific). - Sat is the satellite descriptor providing the overpass. Currently the satellites used are the DMSP/SSMIS-16/17/18, GPM/GMI, and GCOM/AMSR2. - Ring Diam (km) indicates the estimated surface eyewall diameter if one is analyzed in the PMW imagery. The value listed is the average PMW-estimated inner eyewall edge diameter minus 10 km for eyewall slope. N/A indicates no appreciable eyewall is analyzed. - Ring Pct is the percentage of the analyzed "ring" (eyewall inner boundary) that is 1) colder than the eye Tb (the "hot spot" -- warmest eye pixel) by at least 20K, or 2) that is colder than 232K and colder than the eye Tb by 10K, whichever is greater. Values are red if Ring % ≤65,yellow/brown if Ring % ≤85 and green if Ring % >85. N/A indicates no appreciable eyewall is analyzed. A value over 85% is used in the intensity score by adding 15 points to it. - TbDiff is the difference between the warmest eye pixel and the warmest pixel on the eyewall. This value is used in the Intensity Score. N/A indicates no appreciable eyewall is analyzed. - Eye Score values are based on the strength and organization of the convective/eyewall signatures in the PMW imagery, and based on the ARCHER center location. They normally range from 0 to 100 with empirically-determined thresholds related to intensity (Vmax) in the "Meaning" column (≥20 suggests ≥65kts; ≥60 suggests ≥85kts). Scores are listed as negative, and not used by the ADT, when the NHC, CPHC, or JTWC Best Track Vmax is <55 kts in order to filter out occasional "false eye" cases. A value of -920 is used when the warmest eye pixel is <200K to prevent false positives; -930 means edge of overpass and <85% of eyewall is captured and therefore can't fully be analyzed. |
