{"id": "1203415039957237762", "title": "Tropical Cyclone Discussion", "adv_date": "2026-08-21T15:00:00Z", "msg": "177\nWTPA42 PHFO 211445\nTCDCP2\n \nHurricane Lala Discussion Number  37\nNWS Central Pacific Hurricane Center Honolulu HI   CP012026\nIssued by NWS National Hurricane Center Miami FL\n500 AM HST Fri Aug 21 2026\n \nSince the previous advisory, Lala has maintained a relatively steady \npresentation on infrared satellite imagery, with a ragged eye and a \nring of cool cloud tops encircling the center of the hurricane. The \ninitial intensity of 85 kt is a bit higher than the subjective \nDvorak estimates from HFO (T4.0/65 kt) and JTWC (T4.5/77 kt), but \ncloser to the objective satellite intensity estimates from CIMSS. \nHurricane Lala is also interacting favorably with an upper-level \ntrough.\n\nThe influence of the trough interaction appears to be slightly \naccelerating the system towards the north-northeast. The estimated \nforward motion for this advisory is 030/11 kt, which is forecast to \ncontinue through later this morning or this afternoon. By Saturday, \na quick turn to the north and then the northwest is expected as the \ntrough exits to the east and a mid-level ridge builds just south of \nthe Aleutian Islands. Lala will then decelerate slightly as the \nridge remains the primary steering feature through the remainder of \nthe forecast period. The track forecast is again adjusted slightly \nto the right of the previous forecast, mainly due to the current \nmotion positioning the system more north-northeast at the initial \ntime. The new track forecast closely follows the HCCA and TVCN aids.\n \nThe ongoing strong southwesterly vertical wind shear combined with \nan expansive area of somewhat dry mid-level air appears to be having \nlittle effect on the robust inner core of Hurricane Lala. This is \nlikely due to the favorable trough interaction. As the trough moves \naway from the system, the shear is expected to decrease \ndramatically, with gradually cooling sea surface temperatures and \nambient dry air likely to be the only hindrances through 120 h. The \nintensity forecast, as a result, shows steady weakening, and I would \nnot be surprised if Lala decays slower than forecast. The intensity \nforecast is on the higher side of the guidance envelope, which \noften struggle to capture these favorable trough interactions.\n \n \nFORECAST POSITIONS AND MAX WINDS\n \nINIT  21/1500Z 27.6N 170.8W   85 KT 100 MPH\n 12H  22/0000Z 28.9N 171.1W   80 KT  90 MPH\n 24H  22/1200Z 30.4N 171.9W   75 KT  85 MPH\n 36H  23/0000Z 31.4N 172.9W   70 KT  80 MPH\n 48H  23/1200Z 32.1N 173.7W   65 KT  75 MPH\n 60H  24/0000Z 32.7N 174.6W   60 KT  70 MPH\n 72H  24/1200Z 33.5N 175.4W   55 KT  65 MPH\n 96H  25/1200Z 35.0N 176.9W   50 KT  60 MPH\n120H  26/1200Z 37.0N 178.7W   45 KT  50 MPH\n \n"}