Tropical Depression 04W
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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
20250701 231738 GMI 25.0 147.4 23 N/A 2.82 -2.82 N/A 30.0 24.9 147.1 Analysis Plot
20250702 090832 GMI 25.9 146.7 N/A N/A N/A N/A N/A 30.0 26.0 146.5 Analysis Plot
20250702 154825 AMSR2 26.9 146.0 112 8% 0.18 -0.18 N/A 35.0 27.0 145.5 Analysis Plot
20250702 205254 SSMISF16 27.1 145.4 290 26% 3.07 -3.07 N/A 35.0 27.3 145.4 Analysis Plot
20250703 063400 SSMISF18 27.9 145.5 23 N/A 7.35 -7.35 N/A 50.0 27.8 145.1 Analysis Plot
20250703 081114 SSMISF16 28.1 145.3 23 N/A 5.98 -5.98 N/A 50.0 28.0 145.3 Analysis Plot
20250703 163048 AMSR2 28.6 145.1 N/A N/A N/A N/A N/A 55.0 28.9 145.5 Analysis Plot
20250703 190056 SSMISF18 28.6 145.1 N/A N/A N/A N/A N/A 60.0 29.0 145.5 Analysis Plot
20250704 032944 AMSR2 29.6 145.2 46 31% 1.73 1.73 N/A 55.0 30.0 144.9 Analysis Plot
20250704 153610 AMSR2 30.6 146.2 N/A N/A N/A N/A N/A 55.0 30.6 145.8 Analysis Plot
20250704 224826 GMI 31.1 146.5 N/A N/A N/A N/A N/A 50.0 30.9 146.5 Analysis Plot
20250705 161730 AMSR2 31.7 148.7 68 39% 11.32 -11.32 N/A 50.0 31.7 148.7 Analysis Plot
20250705 183142 SSMISF18 31.6 148.8 112 51% 9.40 -9.40 N/A 50.0 31.8 148.8 Analysis Plot
20250705 220711 GMI 32.2 149.0 90 3% 5.17 -5.17 N/A 50.0 32.1 149.0 Analysis Plot
20250706 031757 AMSR2 32.6 149.4 135 39% 0.55 -0.55 N/A 50.0 32.7 149.3 Analysis Plot
20250706 055210 SSMISF18 32.8 149.5 135 33% 4.04 -4.04 N/A 50.0 32.8 149.3 Analysis Plot
20250706 075437 GMI 33.0 149.6 135 14% 2.40 -2.40 N/A 50.0 33.0 149.4 Analysis Plot
20250706 181704 SSMISF18 33.9 149.8 N/A N/A N/A N/A N/A 50.0 34.4 149.2 Analysis Plot
20250707 053904 SSMISF18 35.9 148.0 146 N/A 4.36 -4.36 N/A 40.0 36.0 148.5 Analysis Plot
20250707 071149 GMI 36.0 148.3 290 N/A 0.95 -0.95 N/A 40.0 36.2 148.4 Analysis Plot
20250707 160318 AMSR2 37.8 148.4 N/A N/A N/A N/A N/A 30.0 37.9 148.4 Analysis Plot
20250707 221934 GMI 39.4 149.0 5 N/A 1.87 -1.87 N/A 25.0 38.9 149.2 Analysis Plot
20250708 030736 AMSR2 39.8 150.4 N/A N/A N/A N/A N/A 25.0 40.1 150.2 Analysis Plot
20250708 052614 SSMISF18 40.4 150.6 223 N/A 2.44 -2.44 N/A 25.0 40.4 150.6 Analysis Plot
20250708 062854 GMI 40.1 151.3 N/A N/A N/A N/A N/A 25.0 40.6 150.8 Analysis Plot
20250708 174700 SSMISF18 42.2 156.4 N/A N/A N/A N/A N/A 25.0 43.0 154.2 Analysis Plot
20250708 210635 SSMISF16 43.7 155.8 23 N/A 0.70 -0.70 N/A 15.0 43.1 154.8 Analysis Plot
20250708 213942 GMI 44.8 154.0 N/A N/A N/A N/A N/A 15.0 43.2 155.1 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. |
