The 'Hard Freeze Warning' Was Retired in 2024. Read the New Alerts Instead.

On October 1, 2024 the National Weather Service retired the Hard Freeze Warning nationally and folded it into the Freeze Watch and Freeze Warning. It also replaced the Wind Chill Advisory with the Cold Weather Advisory and the Wind Chill Watch and Warning with the Extreme Cold Watch and Warning. Two winters later, a great deal of freeze-prep content in this market still tells homeowners to watch for a product that no longer exists — which is a reasonable indicator of how recently it was checked.

Here is the current set, what each one is actually built to warn you about, and which of them should make you think about pipes.

Which alert actually means "protect the pipes"?

Freeze Watch and Freeze Warning — generally 25°F to 32°F

This is the workhorse product on the Gulf Coast and it covers an enormous range of consequence. At 31°F it is a warning about tender plants and citrus. At 25°F, on a still clear night, it is starting to be a warning about your plumbing. The alert name does not distinguish between those two nights, so the number in the forecast has to.

Read the low, not the label. A Freeze Warning with a low of 30°F and a Freeze Warning with a low of 19°F are different events wearing the same badge.

Cold Weather Advisory — apparent temperatures 25°F down to 14°F

The replacement for the Wind Chill Advisory in the southern counties. Apparent temperature accounts for wind, and wind is why this one matters to a plumber even though pipes do not feel wind chill the way people do. Wind strips heat off an exposed pipe, an uninsulated hose bib and a crawlspace far faster than still air at the same temperature. When this is posted alongside a Freeze Warning, the exposed components are in real trouble.

Extreme Cold Watch and Warning — apparent temperatures at or below 15°F

The replacement for the Wind Chill Watch and Warning. On this coast this is a rare product, and when it is issued the honest advice is not "drip a faucet." It is: know where your main shutoff valve is, know that it closes, and have a plan for the house being without water for a day.

Winter Storm Warning and Ice Storm Warning

NWS Mobile's southern-county thresholds are an 80% or better chance of an inch or more of snow, and a quarter inch or more of ice accretion. Both are unusual here and both bring the secondary problem that matters more than the snow itself: roads close, everybody stays home, and the response to anything that breaks gets slower for everyone.

The window is about twelve weeks long, and there is no thaw season

Northern plumbing content is organised around a winter that arrives, stays, and releases in spring. That framework does not describe Fairhope at all.

In the NWS Mobile climate record, the average first fall freeze at Fairhope is December 1 and the average last spring freeze is February 22. Mobile runs November 29 to February 28; Dauphin Island, out in the water, runs December 27 to February 6. Auburn University's freeze bulletin puts Fairhope's means a little wider, at November 23 and February 27.

Those two paragraphs use long-run climate normals, and it is worth flagging the distinction, because the freeze-day counts elsewhere on this site do not. Every "18 days at or below 32°F" figure we publish comes from one calendar year of per-coordinate reanalysis and is described as such. First-freeze and last-freeze dates are averages across many years from the official climate record. Both are useful; they are not the same kind of number, and running them together is how a plumber ends up quoting a normal that nobody measured.

So the practical shape is a window from about Thanksgiving to the first week of March, with essentially all of the risk concentrated in January — and inside that window, a handful of nights that matter. At the Fairhope coordinate in 2025, 13 days fell to or below 32°F, eight to or below 28°F, and exactly one to or below 20°F, with a coldest reading of 15.5°F.

And there is no spring thaw here, because there is no sustained freeze to thaw from. What there is instead is a thaw after every single cold snap, usually within a day or two — which is precisely when the damage announces itself.

What happened here the last time it went to the bottom of the scale

January 21 and 22, 2025 is the reference event for this coast. Mobile Regional Airport took 7.5 inches of snow — an all-time record that broke a mark set in February 1895 — and fell to 6°F on the 22nd, a daily record and a tie for the third-coldest reading in the airport-era record. Baldwin County snow totals ran from 6.5 inches at Orange Beach to 9.5 inches at Turkey Branch, with 8.1 inches at Fairhope. Measured lows on the 22nd were 12 to 14°F here, 13°F at Foley, 16°F at Gulf Shores.

Fairhope's water system took a main break that week. It is the largest system on our map — registered to serve 59,850 people, the highest population served by the local water system of the 12 communities Streamlined Plumbing serves — and it still broke a main. Up in north Baldwin County, North Baldwin Utilities went to a boil-water notice on the 23rd and did not lift it until the 29th.

That is worth sitting with if you live off Scenic 98, along Greeno Road, or in the older housing between downtown and the Pier. A big, well-run municipal system with a professional distribution crew still lost a main to that cold. Nothing about a private service line, a meter box or an exposed run under a bluff-side house is more robust than a city water main. When something on the house side gives way, that is ordinary water line repair — and it is the same work whether the address is in Fairhope or twenty miles north.

One naming note, since it comes up. That event is widely referred to by a name assigned by a private media outlet. The National Weather Service and the Weather Prediction Center do not use those names. If a page tells you the National Weather Service issued a warning for a named winter storm, that page has not checked its own source.

What to do with an alert when you see one

At a Freeze Warning with a low in the upper 20s: disconnect the hoses if they are still on, and close the hose bibs. That is most of it.

At a low in the low 20s or below, especially with a Cold Weather Advisory alongside it: open cabinet doors on exterior walls, run a slow stream at the fixture farthest from the meter, leave the heat at a real setting, and confirm you can shut the water off. If you are heading out of town during the window, the empty-house calculus is different and worth reading before you go.

At an Extreme Cold Warning: all of the above, and accept that some things will break anyway. Knowing where the valve is decides whether that means a repair or a renovation.

If you are not sure whether what you are hearing in the wall is a problem, the plumbing symptom checker will walk it to a likely cause. If something has already opened up, shut the main and call — emergency plumbing, answered around the clock at (251) 423-7654. Brandon Byrd, Alabama Master Plumber MP-4462.

Why southern houses fail nearer 20°F than 32°F is in the slab-house piece; what to do in the hours after the thaw starts is in burst pipe triage. The season checklist lives on the freeze prep page.

Sources. NWS Mobile winter weather criteria page (weather.gov/mob/Winter_alabama). National retirement of the Hard Freeze Warning, Wind Chill Advisory and Wind Chill Watch/Warning effective October 1, 2024, NWS product change notice. Legacy Hard Freeze Warning definition, NWS Mobile December 2006 freeze event page. Average first-fall and last-spring freeze dates from the NWS Mobile climate record as compiled by WKRG, and from Auburn University's Alabama freeze-probability bulletin. NWS Mobile January 2025 snow event and January 2025 climate summaries. North Baldwin Utilities boil-water notice; Fairhope water main break via WKRG. Population served from the EPA SDWIS drinking-water registry. Fairhope's 2025 freeze-day counts are per-coordinate ERA5-Land reanalysis via the Open-Meteo archive for a single calendar year, not a climate normal.