Whet for the NFL.

Wind over 15mph cuts passing-yard totals by 5-10% on average. Over 20mph the effect compounds — quarterbacks throw shorter, receivers can't track deep, kickers miss FGs. Whet's NFL weather filter rejects passing- over props at >15mph wind and de-rates target-share props for outdoor receivers.

Precip adds noise on top: rain/snow turn possession-style games into low-total grinds. The filter pulls live forecasts at game-time (not at flag-time) so a 60% chance of rain doesn't false-flag if the front shifts. Indoor games skip the filter entirely.

A receiver with 12% target share over the last 4 games isn't going to hit a generous receiving-yards prop unless his snap count climbs. Whet rejects receiving props for receivers below the 15% target-share floor or below 60% snap rate — they're not seeing enough volume to beat the line at a rate that overcomes variance.

The cutoffs are calibrated per position: WR1s at >25% target share are the strongest leans; tight ends with >18% are the second-tier safe zone; flex RBs with high-rotation snap counts go in a separate bucket.

Vegas underdogs +7 or worse pass at ~1.4x their season-average rate (down-and-distance forces them to air it out). Whet boosts the score for the underdog QB + WR1 props and de-rates the RB-rushing-yards-over for the same team. The favorite's RB props gain — game-script for the favorite is run-heavy when they're ahead.

The script filter doesn't blindly boost every dog QB — it pairs with target-share + snap-pct + wind. A underdog WR2 in 18mph wind doesn't get the script boost.

Vegas total < 40 = reject most receiving + rushing over props (the game just doesn't produce enough volume). Total > 50 = boost the prop scores on both sides. The exact cutoffs are sport-aware: a 38-total game with two strong defenses can still produce a +EV spot if the script writes itself, so the filter qualifies rather than rejects below 40.