Tropical Depression 14S
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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
20240222 083629 SSMISF18 -16.3 118.8 N/A N/A N/A N/A N/A 35.0 -17.1 118.8 Analysis Plot
20240222 103210 SSMISF16 -16.6 118.1 N/A N/A N/A N/A N/A 35.0 -17.3 118.4 Analysis Plot
20240222 105211 SSMISF17 -16.6 118.1 N/A N/A N/A N/A N/A 35.0 -17.3 118.3 Analysis Plot
20240222 194824 SSMISF18 -18.3 114.9 N/A N/A N/A N/A N/A 30.0 -18.0 115.9 Analysis Plot
20240222 222747 GMI -18.0 115.8 N/A N/A N/A N/A N/A 30.0 -18.1 115.7 Analysis Plot
20240223 082011 SSMISF18 -19.2 113.4 68 3% 1.58 -1.58 N/A 35.0 -19.1 113.5 Analysis Plot
20240223 103811 SSMISF17 -19.9 113.2 N/A N/A N/A N/A N/A 35.0 -19.4 113.3 Analysis Plot
20240223 115204 GMI -20.4 113.3 N/A N/A N/A N/A N/A 35.0 -19.5 113.2 Analysis Plot
20240223 193701 SSMISF18 -20.7 112.6 N/A N/A N/A N/A N/A 35.0 -19.9 113.3 Analysis Plot
20240223 213231 SSMISF16 -21.2 112.8 N/A N/A N/A N/A N/A 35.0 -20.3 113.3 Analysis Plot
20240224 063345 AMSR2 -23.1 112.7 N/A N/A N/A N/A N/A 30.0 -21.5 113.3 Analysis Plot
20240224 080831 SSMISF18 -23.6 113.1 N/A N/A N/A N/A N/A 30.0 -22.8 113.3 Analysis Plot
20240224 100405 SSMISF16 -23.9 113.1 N/A N/A N/A N/A N/A 30.0 -23.2 113.4 Analysis Plot
20240224 172915 AMSR2 -25.7 114.7 N/A N/A N/A N/A N/A 30.0 -24.7 113.8 Analysis Plot
20240224 212058 SSMISF16 -26.1 114.8 N/A N/A N/A N/A N/A 25.0 -25.3 114.1 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. |
