Tropical Storm 18S
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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
20230408 192721 SSMISF18 -11.9 128.1 212 18% 0.97 -0.97 N/A 35.0 -11.5 127.9 Analysis Plot
20230409 080517 SSMISF18 -13.1 124.6 N/A N/A N/A N/A N/A 45.0 -12.5 125.8 Analysis Plot
20230409 164434 AMSR2 -11.6 124.8 N/A N/A N/A N/A N/A 45.0 -13.2 124.2 Analysis Plot
20230409 191524 SSMISF18 -12.2 123.3 N/A N/A N/A N/A N/A 45.0 -13.4 123.9 Analysis Plot
20230409 211338 SSMISF16 -13.1 123.4 5 24% 0.96 -0.96 N/A 45.0 -13.6 123.6 Analysis Plot
20230409 221314 SSMISF17 -13.7 122.9 N/A N/A N/A N/A N/A 45.0 -13.6 123.5 Analysis Plot
20230410 045931 AMSR2 -14.3 123.3 N/A N/A N/A N/A N/A 50.0 -13.9 122.7 Analysis Plot
20230410 075515 GMI -14.3 122.9 N/A N/A N/A N/A N/A 45.0 -14.1 122.5 Analysis Plot
20230410 105019 SSMISF17 -14.4 122.0 N/A N/A N/A N/A N/A 45.0 -13.3 122.3 Analysis Plot
20230410 172657 AMSR2 -14.4 121.6 N/A N/A N/A N/A N/A 45.0 -13.9 121.8 Analysis Plot
20230410 192247 GMI -14.5 121.1 68 39% 3.42 -3.42 N/A 50.0 -13.9 121.8 Analysis Plot
20230410 210023 SSMISF16 -15.1 121.7 N/A N/A N/A N/A N/A 50.0 -14.0 121.7 Analysis Plot
20230410 215957 SSMISF17 -15.6 120.7 N/A N/A N/A N/A N/A 50.0 -14.0 121.6 Analysis Plot
20230411 054047 AMSR2 -14.9 120.7 N/A N/A N/A N/A N/A 50.0 -14.7 120.7 Analysis Plot
20230411 073852 SSMISF18 -15.3 120.0 N/A N/A N/A N/A N/A 55.0 -14.5 121.6 Analysis Plot
20230411 093650 SSMISF16 -15.3 120.6 N/A N/A N/A N/A N/A 55.0 -14.6 121.5 Analysis Plot
20230411 103544 SSMISF17 -15.0 120.4 N/A N/A N/A N/A N/A 55.0 -14.6 121.5 Analysis Plot
20230411 204830 SSMISF16 -15.7 120.0 34 100% 28.64 43.64 >65 kts 80.0 -16.0 120.2 Analysis Plot
20230411 214752 SSMISF17 -15.7 119.8 46 100% 25.69 40.69 >65 kts 80.0 -16.1 120.1 Analysis Plot
20230412 074510 GMI -16.2 119.7 23 100% 40.81 55.81 >65 kts 90.0 -16.1 119.4 Analysis Plot
20230412 092312 SSMISF16 -16.2 119.6 12 100% 25.97 40.97 >65 kts 90.0 -16.3 119.4 Analysis Plot
20230412 102200 SSMISF17 -16.3 119.5 12 100% 24.10 39.10 >65 kts 90.0 -16.3 119.3 Analysis Plot
20230412 171542 AMSR2 -16.9 119.1 12 100% 25.99 40.99 >65 kts 100.0 -17.2 119.3 Analysis Plot
20230412 201859 SSMISF18 -17.5 119.3 12 100% 49.28 64.28 >85 kts 105.0 -17.5 119.3 Analysis Plot
20230413 052754 AMSR2 -18.6 118.8 23 100% 72.39 87.39 >85 kts 115.0 -18.6 119.3 Analysis Plot
20230413 090947 SSMISF16 -19.0 118.7 23 100% 34.13 49.13 >65 kts 130.0 -19.2 119.2 Analysis Plot
20230413 100836 SSMISF17 -19.1 118.7 N/A N/A N/A N/A N/A 130.0 -19.4 119.4 Analysis Plot
20230413 181711 GMI -20.5 120.1 23 100% 59.97 74.97 >85 kts 130.0 -20.4 120.4 Analysis Plot
20230413 200625 SSMISF18 -21.0 120.5 23 100% 62.39 77.39 >85 kts 115.0 -20.8 120.7 Analysis Plot
20230414 073556 GMI -22.6 124.1 N/A N/A N/A N/A N/A 75.0 -22.1 123.5 Analysis Plot
20230414 085528 SSMISF16 -22.4 125.8 N/A N/A N/A N/A N/A 75.0 -22.3 124.2 Analysis Plot
20230414 095338 SSMISF17 -22.0 126.1 N/A N/A N/A N/A N/A 75.0 -22.4 124.3 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. |
