Tropical Depression 23W
|
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
20250916 175407 AMSR2 16.0 122.0 23 57% 3.50 -3.50 N/A 45.0 16.7 122.3 Analysis Plot
20250916 200423 SSMISF18 16.2 122.0 12 32% 4.11 -4.11 N/A 45.0 16.5 121.9 Analysis Plot
20250917 044749 AMSR2 17.1 120.7 N/A N/A N/A N/A N/A 30.0 17.6 121.3 Analysis Plot
20250917 131314 GMI 18.5 120.6 N/A N/A N/A N/A N/A 25.0 18.7 120.4 Analysis Plot
20250917 195030 SSMISF18 19.3 118.7 N/A N/A N/A N/A N/A 25.0 19.3 119.6 Analysis Plot
20250917 224954 SSMISF17 19.5 118.1 N/A N/A N/A N/A N/A 25.0 19.4 119.3 Analysis Plot
20250918 023616 GMI 19.8 117.7 12 N/A 1.25 -1.25 N/A 30.0 20.0 118.6 Analysis Plot
20250918 053006 AMSR2 19.6 117.4 N/A N/A N/A N/A N/A 30.0 20.4 118.1 Analysis Plot
20250918 174045 AMSR2 21.4 115.6 N/A N/A N/A N/A N/A 40.0 21.4 116.3 Analysis Plot
20250918 223401 SSMISF17 21.8 115.8 246 29% 0.19 -0.19 N/A 40.0 21.9 115.9 Analysis Plot
20250918 231717 SSMISF16 21.5 116.2 157 24% 0.83 -0.83 N/A 40.0 21.9 115.8 Analysis Plot
20250919 015423 GMI 22.1 115.7 N/A N/A N/A N/A N/A 45.0 22.1 115.7 Analysis Plot
20250919 182251 AMSR2 23.7 114.3 N/A N/A N/A N/A N/A 25.0 23.4 114.3 Analysis Plot
20250919 210153 SSMISF18 23.4 114.1 12 N/A 2.05 -2.05 N/A 25.0 23.5 114.1 Analysis Plot
20250919 222001 SSMISF17 23.3 114.1 157 N/A 0.25 -0.25 N/A 25.0 23.5 114.0 Analysis Plot
20250919 230333 SSMISF16 23.4 114.1 223 N/A 1.23 -1.23 N/A 25.0 23.5 114.0 Analysis Plot
|
|
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. |
