Function parseWindsAloft

Parses a raw FD winds-aloft forecast bulletin into a structured WindsAloftForecast object. Handles the AWC wire-format preamble ((Extracted from X) or a plain WMO header line), the fixed-width data table, light-and-variable winds (raw code 9900), high-speed wind encoding (direction codes 51-86 denoting speeds >= 100 kt), and implicit-negative temperatures above the TEMPS NEG ABV threshold.

import { parseWindsAloft } from '@squawk/weather';

const forecast = parseWindsAloft(rawFdBulletin);
console.log(forecast.altitudesFt); // [3000, 6000, 9000, 12000, 18000, 24000, 30000, 34000, 39000]
console.log(forecast.stations[0]?.stationId); // "BDL"
console.log(forecast.stations[0]?.levels[2]?.directionDeg); // 330
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