Tropical Depression 04L
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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
20240803 004637 GMI 21.0 -79.1 23 12% 4.80 -4.80 N/A 25.0 21.0 -79.1 Analysis Plot
20240803 095659 SSMISF18 22.4 -81.4 157 3% 2.27 -2.27 N/A 25.0 22.4 -81.2 Analysis Plot
20240803 120553 SSMISF16 22.3 -81.8 146 21% 1.67 -1.67 N/A 25.0 22.7 -81.6 Analysis Plot
20240803 141128 GMI 22.4 -81.7 57 4% 0.07 -0.07 N/A 25.0 22.9 -81.8 Analysis Plot
20240803 190109 AMSR2 23.8 -82.6 N/A N/A N/A N/A N/A 30.0 23.6 -82.8 Analysis Plot
20240803 211225 SSMISF18 24.2 -83.0 201 11% 3.07 -3.07 N/A 30.0 24.0 -83.3 Analysis Plot
20240803 232122 SSMISF16 24.6 -83.7 157 3% 1.12 -1.12 N/A 40.0 24.6 -83.8 Analysis Plot
20240804 070930 AMSR2 25.7 -84.5 N/A N/A N/A N/A N/A 45.0 25.5 -84.0 Analysis Plot
20240804 094215 SSMISF18 25.1 -84.8 N/A N/A N/A N/A N/A 45.0 25.9 -84.1 Analysis Plot
20240804 115116 SSMISF16 25.8 -85.0 N/A N/A N/A N/A N/A 50.0 26.3 -84.2 Analysis Plot
20240804 124029 SSMISF17 26.6 -83.8 12 18% 1.75 -1.75 N/A 50.0 26.5 -84.2 Analysis Plot
20240804 210012 SSMISF18 27.8 -84.2 34 7% 5.06 5.06 N/A 55.0 27.9 -84.4 Analysis Plot
20240804 235742 SSMISF17 28.4 -83.6 79 39% 15.64 15.64 N/A 55.0 28.1 -84.4 Analysis Plot
20240805 075138 AMSR2 29.5 -83.6 68 100% 31.91 46.91 >65 kts 70.0 29.6 -83.7 Analysis Plot
20240805 092802 SSMISF18 29.4 -83.8 57 62% 24.35 24.35 >65 kts 70.0 29.7 -83.7 Analysis Plot
20240805 113713 SSMISF16 29.8 -83.3 34 58% 18.62 18.62 N/A 65.0 29.9 -83.6 Analysis Plot
20240805 122447 SSMISF17 29.9 -83.3 23 56% 10.66 10.66 N/A 65.0 30.0 -83.5 Analysis Plot
20240805 142355 GMI 29.9 -83.0 N/A N/A N/A N/A N/A 65.0 30.1 -83.5 Analysis Plot
20240805 204727 SSMISF18 30.9 -83.0 57 N/A 0.06 -0.06 N/A 50.0 30.5 -82.9 Analysis Plot
20240805 225640 SSMISF16 30.9 -82.5 79 N/A 1.74 -1.74 N/A 50.0 30.6 -82.8 Analysis Plot
20240806 001202 GMI 30.9 -82.4 N/A N/A N/A N/A N/A 50.0 30.7 -82.7 Analysis Plot
20240806 065548 AMSR2 31.5 -81.8 N/A N/A N/A N/A N/A 40.0 31.7 -81.6 Analysis Plot
20240806 091405 SSMISF18 31.6 -82.0 N/A N/A N/A N/A N/A 40.0 31.8 -81.5 Analysis Plot
20240806 112330 SSMISF16 31.7 -81.8 N/A N/A N/A N/A N/A 40.0 31.9 -81.3 Analysis Plot
20240806 134213 GMI 31.9 -81.4 N/A N/A N/A N/A N/A 40.0 31.9 -81.2 Analysis Plot
20240806 232958 GMI 31.9 -80.1 N/A N/A N/A N/A N/A 35.0 32.2 -80.7 Analysis Plot
20240806 233041 SSMISF17 32.1 -80.5 N/A N/A N/A N/A N/A 35.0 32.2 -80.5 Analysis Plot
20240807 090054 SSMISF18 32.3 -79.5 N/A N/A N/A N/A N/A 40.0 32.0 -79.4 Analysis Plot
20240807 111022 SSMISF16 32.3 -79.7 N/A N/A N/A N/A N/A 40.0 32.0 -79.3 Analysis Plot
20240807 125909 GMI 32.0 -79.3 N/A N/A N/A N/A N/A 45.0 32.0 -79.3 Analysis Plot
20240807 183852 AMSR2 32.5 -79.1 290 19% 0.60 -0.60 N/A 50.0 32.6 -79.1 Analysis Plot
20240807 202114 SSMISF18 32.5 -79.1 324 8% 5.07 -5.07 N/A 50.0 32.5 -79.1 Analysis Plot
20240807 224727 GMI 32.4 -78.9 N/A N/A N/A N/A N/A 50.0 32.6 -79.1 Analysis Plot
20240807 231644 SSMISF17 33.5 -79.2 146 8% 1.36 -1.36 N/A 50.0 32.6 -79.1 Analysis Plot
20240808 064327 AMSR2 33.3 -79.8 N/A N/A N/A N/A N/A 45.0 33.2 -79.7 Analysis Plot
20240808 114205 SSMISF17 33.5 -80.2 N/A N/A N/A N/A N/A 40.0 33.6 -79.8 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. |
