Tropical Depression 13S
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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
20230209 074837 AMSR2 -17.0 88.8 146 18% 1.15 -1.15 N/A 40.0 -16.9 88.6 Analysis Plot
20230209 111432 SSMISF18 -17.3 87.1 N/A N/A N/A N/A N/A 40.0 -16.9 88.3 Analysis Plot
20230209 113739 SSMISF16 -16.9 88.1 223 17% 6.41 -6.41 N/A 40.0 -16.9 88.2 Analysis Plot
20230209 130255 SSMISF17 -17.6 86.7 N/A N/A N/A N/A N/A 40.0 -16.9 87.9 Analysis Plot
20230210 083223 AMSR2 -16.3 82.9 N/A N/A N/A N/A N/A 45.0 -16.3 83.0 Analysis Plot
20230210 110142 SSMISF18 -16.3 82.6 68 38% 0.49 -0.49 N/A 45.0 -16.3 82.8 Analysis Plot
20230210 150933 GMI -16.1 82.0 N/A N/A N/A N/A N/A 45.0 -16.2 81.9 Analysis Plot
20230211 004942 SSMISF16 -15.9 80.3 N/A N/A N/A N/A N/A 45.0 -16.1 80.1 Analysis Plot
20230211 021618 SSMISF17 -15.9 80.2 157 21% 0.03 -0.03 N/A 45.0 -16.0 79.7 Analysis Plot
20230211 042607 GMI -15.8 79.7 N/A N/A N/A N/A N/A 45.0 -16.1 79.5 Analysis Plot
20230211 125159 SSMISF16 -16.0 77.8 23 85% 11.98 -11.98 N/A 45.0 -16.3 77.9 Analysis Plot
20230211 141646 SSMISF17 -15.7 78.1 12 43% 7.40 -7.40 N/A 45.0 -16.3 77.7 Analysis Plot
20230211 200711 AMSR2 -16.1 76.7 12 93% 18.96 -33.96 N/A 45.0 -16.2 76.8 Analysis Plot
20230212 003628 SSMISF16 -16.3 76.2 23 100% 31.85 -46.85 N/A 45.0 -16.3 76.4 Analysis Plot
20230212 020255 SSMISF17 -16.5 75.9 23 25% 10.15 -10.15 N/A 45.0 -16.4 76.3 Analysis Plot
20230212 082020 AMSR2 -17.0 75.2 23 100% 31.47 -46.47 N/A 45.0 -17.0 75.2 Analysis Plot
20230212 123837 SSMISF16 -17.2 74.8 23 100% 38.86 -53.86 N/A 45.0 -17.3 74.8 Analysis Plot
20230212 140339 SSMISF17 -17.3 74.8 23 100% 28.01 -43.01 N/A 45.0 -17.4 74.7 Analysis Plot
20230212 145803 GMI -17.5 74.6 46 100% 40.44 55.44 >65 kts 70.0 -17.5 74.6 Analysis Plot
20230212 205122 AMSR2 -18.0 74.1 34 100% 27.47 42.47 >65 kts 75.0 -18.1 74.1 Analysis Plot
20230212 235315 SSMISF18 -18.5 74.0 23 100% 24.21 39.21 >65 kts 75.0 -18.3 74.0 Analysis Plot
20230213 014934 SSMISF17 -18.6 73.7 23 100% 23.85 38.85 >65 kts 75.0 -18.4 73.9 Analysis Plot
20230213 041524 GMI -18.8 73.6 23 100% 30.10 45.10 >65 kts 75.0 -18.5 73.7 Analysis Plot
20230213 090209 AMSR2 -19.9 73.3 168 33% 10.50 10.50 N/A 85.0 -19.3 73.1 Analysis Plot
20230213 120338 SSMISF18 -20.1 73.4 N/A N/A N/A N/A N/A 85.0 -19.5 73.0 Analysis Plot
20230213 134942 SSMISF17 -20.6 73.0 N/A N/A N/A N/A N/A 80.0 -19.7 72.9 Analysis Plot
20230213 195742 AMSR2 -21.3 73.4 N/A N/A N/A N/A N/A 75.0 -21.2 73.3 Analysis Plot
20230213 225026 SSMISF18 -22.3 73.1 57 61% 4.09 4.09 N/A 75.0 -21.5 73.2 Analysis Plot
20230214 112219 SSMISF18 -22.8 72.3 N/A N/A N/A N/A N/A 60.0 -23.3 71.1 Analysis Plot
20230214 223908 SSMISF18 -25.4 70.7 N/A N/A N/A N/A N/A 55.0 -25.4 70.7 Analysis Plot
20230215 004240 SSMISF16 -25.7 70.5 N/A N/A N/A N/A N/A 50.0 -25.8 70.3 Analysis Plot
20230215 110923 SSMISF18 -27.7 68.7 N/A N/A N/A N/A N/A 50.0 -27.6 68.8 Analysis Plot
20230215 131112 SSMISF16 -28.1 68.5 268 4% 6.30 -6.30 N/A 40.0 -28.0 68.4 Analysis Plot
20230215 143356 SSMISF17 -29.9 68.9 N/A N/A N/A N/A N/A 40.0 -28.3 68.1 Analysis Plot
20230216 003006 SSMISF16 -30.5 67.9 212 N/A 1.22 -1.22 N/A 35.0 -29.9 67.9 Analysis Plot
20230216 003008 SSMISF18 -30.4 67.9 212 N/A 1.24 -1.24 N/A 35.0 -30.0 67.8 Analysis Plot
20230216 015307 SSMISF17 -30.6 67.4 34 N/A 2.41 -2.41 N/A 35.0 -30.1 67.8 Analysis Plot
20230216 125658 SSMISF16 -31.8 68.2 N/A N/A N/A N/A N/A 30.0 -32.2 68.2 Analysis Plot
20230216 141917 SSMISF17 -31.9 68.2 157 N/A 1.90 -1.90 N/A 30.0 -32.5 68.3 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. |
