Tropical Depression 26S
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 20250318 184027 AMSR2 -12.3 95.8 N/A N/A N/A N/A N/A 35.0 -12.8 96.3 Analysis Plot 20250318 232451 SSMISF16 -12.6 95.7 223 6% 0.82 -0.82 N/A 35.0 -12.9 96.2 Analysis Plot 20250319 065506 AMSR2 -12.8 95.1 12 75% 2.81 -2.81 N/A 45.0 -13.5 95.7 Analysis Plot 20250319 120028 SSMISF16 -13.5 95.2 N/A N/A N/A N/A N/A 45.0 -13.6 95.6 Analysis Plot 20250319 200919 GMI -12.9 93.8 5 49% 2.05 -2.05 N/A 45.0 -13.1 95.0 Analysis Plot 20250319 235443 SSMISF17 -12.9 93.9 N/A N/A N/A N/A N/A 45.0 -13.2 95.3 Analysis Plot 20250320 073740 AMSR2 -13.4 95.4 290 N/A 0.86 -0.86 N/A 40.0 -13.4 95.4 Analysis Plot 20250320 114721 SSMISF16 -13.6 95.7 12 N/A 0.26 -0.26 N/A 40.0 -13.6 95.7 Analysis Plot 20250320 182939 AMSR2 -14.0 95.7 N/A N/A N/A N/A N/A 35.0 -14.6 96.4 Analysis Plot 20250320 214719 SSMISF18 -14.4 96.2 N/A N/A N/A N/A N/A 35.0 -14.7 96.4 Analysis Plot 20250320 234057 SSMISF17 -14.9 96.6 268 1% 2.12 -2.12 N/A 35.0 -14.9 96.6 Analysis Plot 20250321 065933 GMI -15.1 96.8 N/A N/A N/A N/A N/A 30.0 -15.4 96.8 Analysis Plot 20250321 121639 SSMISF17 -15.7 97.1 N/A N/A N/A N/A N/A 30.0 -15.7 97.1 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. |