NOAA Gives 75% Odds to a Historic El Niño as Snowbird Season Opens

NOAA's Climate Prediction Center held its El Niño Advisory on 10 September and attached numbers to it that have not shown up in a September discussion in decades. The center puts a greater than 90% chance on a very strong event through the Northern Hemisphere fall and winter of 2026-27, and a 75% chance that the October to December season produces a historic event, one stronger than any El Niño on the record back to 1950. August sea surface temperature anomalies ran +1.8°C in Niño-3.4, +2.5°C in Niño-3 and +3.4°C in Niño-1+2, with subsurface anomalies above +10°C at depth. The next diagnostic discussion is scheduled for 8 October.

Southbound collector car shipping starts in the next three weeks. This is one of the rare years where the shape of the winter is on the table before the bookings go out.

The transport angle

The National Weather Service describes the El Niño setup without hedging: a strong, amplified Pacific jet stream extending across the southern United States, with the polar jet displaced north into Canada. The pattern favors above normal precipitation across the southern tier and above normal temperatures across the northern tier.

Those are two separate operating facts and they pull in opposite directions.

At the origin end, a warmer-leaning northern winter usually means the first brine application comes later. What actually ends the safe driving season on a stored car is not snow, it is the day the county trucks start pre-treating. A late salt date buys a wider departure window out of Chicago, Detroit and the Northeast than a normal year does, which takes some of the panic out of the Greenwich to Palm Beach run and its equivalents. It does not make the window infinite. It makes it later and harder to predict, which is worse for planning than a cold November that announces itself.

At the delivery end, the pattern flips. Above normal precipitation across the southern tier is a schedule problem, not a car problem, for anyone already booked enclosed. Rain does not touch a car inside a trailer. It touches the driver's day. Wet weather across the I-10 and I-20 corridors adds hours to every leg, and a delivery appointment into a gated community in Naples or Palm Beach that was comfortable at 48 hours of slack is not comfortable at 12. The Chicago to Naples lane crosses most of that geography. So does the westbound version of the same trip toward Arizona, though Chicago to Phoenix sits far enough north on I-40 to dodge some of it.

Southern California is the other place to watch. A jet stream parked across the southern tier is the same configuration that has historically delivered the wet Los Angeles winters, and the LA basin lanes are the ones where open transport gets chosen most often on price. That trade looks different in a wet year, which is the honest argument for reading enclosed versus open before defaulting to whichever was cheaper last spring.

What to do about it

Book the southbound leg on the calendar, not on the forecast. October and early November pricing on snowbird lanes is set by how many owners have already committed, and a mild-looking November tempts people to wait. If the north stays warm, more owners wait, and the second half of the window compresses into the same two weeks it always does. Committing early is worth more in a warm year, not less.

Pad the delivery date by two days on anything routed through the southern tier between December and March, and confirm how the broker handles a weather delay before signing. Ask specifically whether the delivery window is a date or a range, and what happens to the appointment when the truck loses a day. Our transit time guide covers the normal spread; a wet-pattern winter sits at the long end of it.

Nothing in the CPC discussion forecasts a storm. It forecasts odds, and the odds say the southern half of the country is the part of this winter with weather in it. That is the half most of these cars are driving toward. The rest of the seasonal playbook, including storage prep and the timing of the return trip north, is in the snowbird transport guide.