Tropical Depression 27P
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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
20260317 031825 AMSR2 -12.6 156.7 34 72% 12.84 -12.84 N/A 40.0 -12.1 156.0 Analysis Plot
20260317 074108 GMI -12.5 155.8 34 44% 6.97 -6.97 N/A 50.0 -12.1 155.6 Analysis Plot
20260317 174510 SSMISF18 -12.3 154.0 34 65% 10.62 10.62 N/A 60.0 -12.4 154.1 Analysis Plot
20260318 062159 SSMISF18 -12.5 151.8 34 100% 41.02 56.02 >65 kts 65.0 -12.4 151.7 Analysis Plot
20260318 183107 GMI -13.2 149.2 23 100% 39.15 54.15 >65 kts 90.0 -13.2 149.1 Analysis Plot
20260318 200413 SSMISF17 -13.6 148.9 23 100% 51.52 66.52 >85 kts 100.0 -13.3 148.5 Analysis Plot
20260318 203615 SSMISF16 -13.5 148.5 12 100% 46.04 61.04 >85 kts 100.0 -13.4 148.3 Analysis Plot
20260319 060815 SSMISF18 -13.4 146.2 23 100% 52.52 67.52 >85 kts 115.0 -13.6 146.5 Analysis Plot
20260319 084024 SSMISF17 -13.4 146.2 23 100% 47.58 62.58 >85 kts 125.0 -13.6 145.6 Analysis Plot
20260319 153503 AMSR2 -13.6 144.7 46 100% 60.82 75.82 >85 kts 125.0 -13.6 144.5 Analysis Plot
20260319 195057 SSMISF17 -13.6 143.6 34 100% 48.24 63.24 >85 kts 120.0 -13.8 143.5 Analysis Plot
20260320 070804 GMI -13.4 141.8 N/A N/A N/A N/A N/A 100.0 -13.4 141.8 Analysis Plot
20260320 161759 AMSR2 -12.9 140.1 79 43% 4.17 4.17 N/A 75.0 -13.4 139.8 Analysis Plot
20260320 184107 GMI -12.9 139.6 101 100% 26.40 41.40 >65 kts 75.0 -13.4 139.7 Analysis Plot
20260320 184422 SSMISF18 -13.1 139.4 101 100% 27.65 42.65 >65 kts 75.0 -13.3 139.3 Analysis Plot
20260321 043222 AMSR2 -13.0 138.0 90 100% 34.66 49.66 >65 kts 70.0 -12.9 137.7 Analysis Plot
20260321 072041 SSMISF18 -12.9 137.6 101 100% 34.11 49.11 >65 kts 80.0 -13.1 137.5 Analysis Plot
20260321 183130 SSMISF18 -13.1 135.4 N/A N/A N/A N/A N/A 75.0 -13.4 135.3 Analysis Plot
20260321 213607 SSMISF16 -13.8 134.7 101 21% 1.49 1.49 N/A 75.0 -13.8 134.7 Analysis Plot
20260323 164943 AMSR2 -15.2 125.3 179 22% 3.96 -3.96 N/A 35.0 -15.5 125.5 Analysis Plot
20260323 194356 SSMISF18 -15.8 125.1 223 4% 7.16 -7.16 N/A 35.0 -15.7 125.3 Analysis Plot
20260323 224956 SSMISF16 -15.8 124.9 201 26% 2.66 -2.66 N/A 35.0 -15.9 124.9 Analysis Plot
20260324 050324 AMSR2 -16.3 123.6 201 15% 0.66 -0.66 N/A 35.0 -16.3 123.6 Analysis Plot
20260324 072920 GMI -16.2 123.3 N/A N/A N/A N/A N/A 40.0 -16.3 123.5 Analysis Plot
20260324 081741 SSMISF18 -16.3 122.9 179 22% 8.14 -8.14 N/A 40.0 -16.2 122.7 Analysis Plot
20260324 112425 SSMISF16 -16.4 122.2 N/A N/A N/A N/A N/A 40.0 -16.4 122.2 Analysis Plot
20260324 185903 GMI -17.1 121.0 N/A N/A N/A N/A N/A 45.0 -16.9 121.0 Analysis Plot
20260324 193046 SSMISF18 -17.4 120.8 N/A N/A N/A N/A N/A 50.0 -17.3 120.7 Analysis Plot
20260324 220128 SSMISF17 -17.3 120.7 112 53% 8.24 -8.24 N/A 50.0 -17.3 120.5 Analysis Plot
20260324 223700 SSMISF16 -17.3 120.5 112 47% 8.69 -8.69 N/A 50.0 -17.4 120.3 Analysis Plot
20260325 054511 AMSR2 -17.7 119.0 101 100% 22.25 37.25 >65 kts 70.0 -18.0 118.4 Analysis Plot
20260325 080450 SSMISF18 -17.9 118.6 79 61% 4.93 4.93 N/A 90.0 -18.4 117.6 Analysis Plot
20260325 181601 GMI -18.4 117.2 101 100% 28.30 43.30 >65 kts 90.0 -18.5 116.8 Analysis Plot
20260326 074010 GMI -19.8 115.3 79 100% 30.84 45.84 >65 kts 105.0 -19.9 115.3 Analysis Plot
20260326 102106 SSMISF17 -20.0 114.8 79 100% 34.82 49.82 >65 kts 110.0 -20.4 114.9 Analysis Plot
20260326 172251 AMSR2 -21.0 114.2 68 100% 22.76 37.76 >65 kts 110.0 -22.1 114.0 Analysis Plot
20260326 204508 SSMISF18 -21.9 114.0 79 29% 15.84 15.84 N/A 110.0 -22.3 113.9 Analysis Plot
20260326 213641 SSMISF17 -21.9 113.7 79 8% 14.65 14.65 N/A 110.0 -22.4 113.9 Analysis Plot
20260327 091442 SSMISF18 -24.2 115.1 N/A N/A N/A N/A N/A 110.0 -25.1 114.1 Analysis Plot
20260327 100639 SSMISF17 -24.5 115.1 N/A N/A N/A N/A N/A 110.0 -25.3 114.2 Analysis Plot
20260327 212259 SSMISF17 -28.0 118.3 N/A N/A N/A N/A N/A 40.0 -28.9 116.5 Analysis Plot
20260328 061147 AMSR2 -32.9 120.0 N/A N/A N/A N/A N/A 30.0 -33.2 119.7 Analysis Plot
20260328 094922 SSMISF17 -35.0 121.3 N/A N/A N/A N/A N/A 30.0 -34.0 120.2 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. |
