Tropical Depression 04S
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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
20251018 011457 SSMISF16 -7.1 73.8 N/A N/A N/A N/A N/A 35.0 -7.9 73.8 Analysis Plot
20251018 085219 AMSR2 -7.8 73.8 N/A N/A N/A N/A N/A 35.0 -8.1 73.8 Analysis Plot
20251019 014356 SSMISF17 -8.9 68.9 N/A N/A N/A N/A N/A 35.0 -8.5 69.5 Analysis Plot
20251019 081523 GMI -8.5 68.0 N/A N/A N/A N/A N/A 40.0 -8.6 69.6 Analysis Plot
20251019 194915 GMI -8.7 68.1 N/A N/A N/A N/A N/A 40.0 -8.6 68.3 Analysis Plot
20251020 012913 SSMISF17 -9.2 67.2 N/A N/A N/A N/A N/A 45.0 -8.9 67.4 Analysis Plot
20251020 022755 SSMISF16 -9.0 67.3 N/A N/A N/A N/A N/A 45.0 -8.9 67.3 Analysis Plot
20251020 111458 SSMISF18 -8.6 66.5 12 71% 0.29 -0.29 N/A 50.0 -9.2 66.4 Analysis Plot
20251020 140823 SSMISF17 -8.7 66.4 23 40% 0.84 0.84 N/A 55.0 -9.3 66.2 Analysis Plot
20251020 190650 GMI -9.1 66.1 68 24% 9.51 9.51 N/A 60.0 -9.6 65.7 Analysis Plot
20251020 210622 AMSR2 -8.8 65.4 5 92% 11.44 26.44 >65 kts 60.0 -9.3 66.2 Analysis Plot
20251021 000334 SSMISF18 -9.1 65.2 N/A N/A N/A N/A N/A 60.0 -9.4 66.1 Analysis Plot
20251021 011536 SSMISF17 -9.6 64.3 N/A N/A N/A N/A N/A 60.0 -9.5 65.9 Analysis Plot
20251021 021405 SSMISF16 -9.5 64.2 N/A N/A N/A N/A N/A 60.0 -9.5 65.8 Analysis Plot
20251021 092251 AMSR2 -9.0 64.2 5 42% 2.76 2.76 N/A 60.0 -9.7 64.7 Analysis Plot
20251021 135324 SSMISF17 -9.5 63.7 34 44% 2.43 2.43 N/A 60.0 -10.0 64.1 Analysis Plot
20251021 145241 SSMISF16 -9.7 63.7 34 26% 6.31 6.31 N/A 60.0 -10.0 63.9 Analysis Plot
20251021 234838 SSMISF18 -9.9 62.6 N/A N/A N/A N/A N/A 60.0 -10.1 63.3 Analysis Plot
20251022 020130 SSMISF16 -9.4 62.3 N/A N/A N/A N/A N/A 60.0 -10.3 63.0 Analysis Plot
20251022 074343 GMI -10.3 61.9 N/A N/A N/A N/A N/A 60.0 -10.6 61.8 Analysis Plot
20251022 122645 SSMISF18 -10.4 61.0 123 21% 5.40 5.40 N/A 60.0 -10.7 60.9 Analysis Plot
20251022 134001 SSMISF17 -10.8 59.8 N/A N/A N/A N/A N/A 60.0 -10.8 60.7 Analysis Plot
20251022 143846 SSMISF16 -11.0 59.8 N/A N/A N/A N/A N/A 60.0 -10.8 60.5 Analysis Plot
20251022 191446 GMI -10.4 59.8 12 51% 4.53 4.53 N/A 55.0 -10.9 59.8 Analysis Plot
20251022 233528 SSMISF18 -10.2 59.1 N/A N/A N/A N/A N/A 55.0 -10.4 59.6 Analysis Plot
20251023 022918 SSMISF17 -10.4 59.0 N/A N/A N/A N/A N/A 55.0 -10.4 59.1 Analysis Plot
20251023 121234 SSMISF18 -10.3 58.4 212 4% 0.98 -0.98 N/A 40.0 -10.2 58.3 Analysis Plot
20251023 213730 AMSR2 -9.7 57.2 N/A N/A N/A N/A N/A 40.0 -9.6 57.0 Analysis Plot
20251024 021349 SSMISF17 -9.6 55.1 N/A N/A N/A N/A N/A 45.0 -9.5 56.3 Analysis Plot
20251024 031431 SSMISF16 -9.8 55.0 N/A N/A N/A N/A N/A 45.0 -9.4 56.1 Analysis Plot
20251024 075125 GMI -9.2 53.7 N/A N/A N/A N/A N/A 40.0 -9.1 55.3 Analysis Plot
20251024 095410 AMSR2 -8.9 53.2 N/A N/A N/A N/A N/A 40.0 -8.9 54.8 Analysis Plot
20251024 120025 SSMISF18 -8.8 54.6 101 N/A 0.26 -0.26 N/A 40.0 -8.8 54.5 Analysis Plot
20251024 145249 SSMISF17 -8.5 52.6 12 68% 6.71 -6.71 N/A 35.0 -8.6 54.1 Analysis Plot
20251024 222059 AMSR2 -8.6 53.0 N/A N/A N/A N/A N/A 35.0 -8.4 52.7 Analysis Plot
20251025 004735 SSMISF18 -8.4 52.0 N/A N/A N/A N/A N/A 35.0 -8.3 52.5 Analysis Plot
20251025 020032 SSMISF17 -8.6 51.7 101 N/A 0.74 -0.74 N/A 35.0 -8.2 52.3 Analysis Plot
20251025 103821 AMSR2 -8.1 49.6 N/A N/A N/A N/A N/A 35.0 -7.4 50.8 Analysis Plot
20251025 143844 SSMISF17 -8.3 49.6 N/A N/A N/A N/A N/A 35.0 -7.3 50.3 Analysis Plot
20251025 153944 SSMISF16 -6.7 50.0 135 N/A 1.01 -1.01 N/A 35.0 -7.3 50.2 Analysis Plot
20251025 184328 GMI -6.3 50.4 5 N/A 5.82 -5.82 N/A 35.0 -7.2 49.9 Analysis Plot
20251026 003319 SSMISF18 -7.2 48.7 179 N/A 1.76 -1.76 N/A 30.0 -7.8 48.9 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. |
