Snow tonight

Monday, Dec. 1, 2025 6:30 P.M.

It’s been fun today to watch how two different systems were going merge and what that means for us.

First, a dying storm has been producing mostly 2″-4″+ snows over Missouri and southern Illinois. That system will produce 2-4″ snows over southern IN tonight – starting about 30 miles (or so) north of the Ohio River.

That energy is now shifting southward to hook up with a new storm coming northeast from Texas. That will combine to create a large snow/rain system spreading NE overnight. Snow will break out around midnight and move rapidly NE. It’ll leave 2-4″ of snow over southern KY into West Virginia overnight. Once again heaviest snow area will begin about 30 miles (or so) south of the river.

Models strongly support a weak “dry” slot moving along the river. The result: Louisville area likely to see 1″ to 2″ of snow. Probably closer to the 1″. Accumulations mostly on grassy areas – don’t expect too much on roads.

Inside the Watterson, accumulations should be less than 1″. Heaviest snow time – 2-5 A.M.

Winter Outlook 2025-26

Recent Changes

Sunday, November 30, 2025 6 P.M.

For many months, the U.S. long range forecast models have followed the usual trends for a “La Nina” winter. We are currently in weak La Nina conditions and are expected to slowly rise into the neutral range early next year. La Nina status is when sea surface temperature in the Equatorial Pacific are below normal…as they are now.

A La Nina winter pattern usually starts as most of Canada with colder than normal temperatures while the U.S. has above normal warmth. The major storm track tends to run along the warm/cold boundary. Then, in January, the cold Canadian air drops slowly southward into the U.S. east of the Rocky Mountains. At the same time the primary storm track also drops south. By February, the colder than normal air masses and storm track drop even more southward. So the result is often called a” Late” Winter with most of the stormiest conditions during the latter half of the season,

Not this year! Starting early in November, the longer range models abruptly changed. Basically, the December forecast changed from warm to cold. That colder-than-normal outlook has locked in for December. The cold pattern warms a bit by January and back to neutral-to-warm temperatures by Febraury.

That’s a complete reversal of the La Nina cycle.

My personal thoughts generally agree with the new data. Look forward to a cold December with numerous chances for snow and rain. Then temperatures ease (compared to normal) in January but still pretty high levels of snow chances. More temperature easing in Feb.

First Snow!

Monday, November 10, 2025 Noon

Snow showers are currently moving through western and southern Jefferson County. These may leave a temporary minor accumulation on grassy areas, but will move quickly southeast away from us. Elsewhere in the Metro, nothing but flurries until mid-afternoon. No road problems expected.

Stuff:

Keep the NO KINGS movement going! Let’s shoot for ten million next time.

Strong Storms getting closer

Friday, May 16, 2025 4:30 PM

TORNADO WATCH UNTIL 10 PM EDT

Storm system has been developing as expected. Numerous reports of extreme winds (more than 74 mph) and/or large hail (2″ diameter or more) have been concentrated mostly over SE MO. No tornado reports so far (4:20 PM) although the threat still remains.

As expected, the system appears to be organizing into a large line as it crosses the Mississippi River and races eastward at 50-55 miles per hour. One short-term model (RAP) is hinting at two squall lines forming – one ahead of the cold front and another with the front. In general, the 8 to 10 PM arrival time still looks pretty good. However, if the two thunderstorm lines idea works out, the first one could be in the 7-8 PM time frame with the second one about 9-10 PM.

Stay alert to local media for any warnings that may be issued.

Severe Storms this Evening?

Friday, may 16, 2025 12:30 PM

Situation hasn’t changed much since yesterday. Todays heating has been delayed by morning rain/clouds, but we’ll be into sunshine and strong southerly winds soon. That’ll be enough to still put us under a strong severe storms threat this evening. Best estimate looks like 8-10 PM tonight.

Currently, soon-to-be severe thunderstorms are firing over northern Arkansas into southern Missouri. This area will gradually merge into a line or two of severe thunderstorms and move rapidly eastward toward the Ohio Valley. Individual supercells will be possible ahead of the actual cold front pushing the squall line eastward. These supercells should be especially dangerous. Luckily for us, the most likely place for these isolated storms will occur from near the Mississippi River into West KY, southern IL and southern IN. It’s expected that these supercells will merge into lines and weaken a bit before reaching us.

Again, expect a line of strong-to-severe thunderstorms to pass through the Louisville area between about 8 to 10 PM.

Rough weather ahead?

Thursday, May 15, 2025 6 PM

Atmosphere is setting up for a big day of severe weather tomorrow and tomorrow night. Forecasts point to a major outbreak starting tomorrow midday over Arkansas, MO, IL with all severe categories moderate to high.  That outbreak will consolidate into one (or more) squall lines as it moves toward IN/KY tomorrow evening – roughly 8 PM to Midnight.That’s not the only problem – atmosphere also favors individual “discrete supercells” ahead of the cold front over western IN/KY tomorrow afternoon.  If these develop, they can be very damaging.  Supercells in the warm, humid air mass ahead of a cold front can be very dangerous.Meanwhile, as the warm air mass works its way northward tonight, we could see some non-severe thunderstorms this evening and again toward morning.

Update

5:45 PM Tuesday, April 29, 2025

Severe Thunderstorm Watch continues with greatest threat headed over South Central Indiana – at least 30+ miles north of the Ohio River.

Farther south, 30 miles north and south of the River, the expected intensity increase has failed to fire. Line of storms headed toward Metro Louisville should remain mostly (if not entirely) below “severe” limits. They should produce strong, gusty winds and heavy rain between 6:30 PM and 8:30 PM.

Severe Thunderstorm Watch

3 PM Tuesday, April 29, 2025

The Severe Storm Prediction Center has placed about half of our area into a Severe Thunderstorm Watch until 9 PM tonight. The SPC is concerned about a fast-moving storm cluster coming from SE MO up the Ohio Valley for the next few hours as the storm system is expected to strengthen.

Judging from the current situation, the greatest threat here should be from about 7PM until 9 PM. Greatest threat is gusty winds which could reach up to 70 mph in a few isolated areas. This is not expected to be a widespread damaging system.

The Watch area basically includes Kentucky counties along the Ohio River and all of southern Indiana from western KY/IN to just east of I-65.

Interesting note: The SPC issues a Watch area as a large rectangle placed over a geographic area. This is primarily for aviation interests. Local forecast offices are allowed to “fine tune” the area for their local regions. Today we’re operating with a split decision.

The SPC Watch area includes Jefferson, Oldham, Bullitt and Hardin Counties. However, Louisville’s forecast office does NOT include these four counties.

That’s a good indication as to how “marginable” this situation really is.

We may get lucky

Sunday, March 30, 2025 8 P.M.

Line of storms approaching rapidly has strengthened over past two hours. This was expected, but something else seems to be developing…a process called bridging. What once was a solid line of severe storms is developing a hole in the middle. Thus, stronger storms moving northeast in Indiana, then a rather disorganized break in the storms along the Ohio River followed by another line of strong storms from western KY southwestward. This line is moving our way about 50 miles per hour and in our area by 9 PM and off to our east by 10PM.

Current indications are that this “bridge” will continue along the Ohio. Thus, the strongest storms are expected to occur in Indiana NORTH of us and the other batch will remain SOUTH of us.

We’ll see some, probably minor, damage locally, but it’ll worse north and south of the Metro area.

Two threats this week

Sunday, March 30, 2025 5 P.M.

Active thunderstorm day underway over the Mississippi Valley at this time. Area of greatest concern currently stretches from northern Indiana into southern Michigan. Major winds have been the biggest threat this afternoon with gusts from 70 – 85 mph reported. Storm Prediction Center says the extreme winds will continue over lower Michigan several more hours.

Meanwhile, the southern part of this system has been weaker today, but is about to get a shot of upper air energy. A cold front moving eastward is expected to intensify with the added energy. That’s where our area comes into play. This front, along with strong thunderstorms, will be moving rapidly eastward this evening, The front/storms should push through the Metro area between 9 and 11 P.M. tonight.

Just how strong the line of thunderstorms will be is an open question at this time. At least a few damaging wind gusts appear likely. But will they be isolated or widespread? Too early to tell at this point.

Keep your “weather eye” open tonight…at least until Midnight. The expected sunshine for the next few hours is not a good sign.

Second Threat

At this time, longer range forecast models are predicting several storm systems to pass through the Ohio Valley from Wednesday night into Saturday. Currently the consenses is an amazing SEVEN inches of rain during that time frame! As I’ve said probably thousands of times…it’s far too early for an accurate forecast. It this time, let’s just say there is a potential for some serious flooding late this week.

Serious Stuff.

We’ve been bombarded this week with stories about the “war bombing” leak to The Atlantic. The President and his merry band of MAGATs have been predictably repeating the same script…”not serious, nothing sensitive, nothing classified.” Yes, yes, the same old pile of BS keeps getting recycled. A simple question…what do you think would have been the reaction if General Eisenhower had given the British press his “war plan” on June 5, 1944?

This incident brings to mind stories from Trump 1.0. And since we are getting close to the annual “betting seminars” leading to Derby Day, it’s probably time for a repeat. Q. What is the safest bet you can make? A. When Donald Trumps’ mouth is open, he’s lying.