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it’s interesting that Tue/Wed lower trop synopsis in there considering the local hemisphere

It may be that the SSW in late November set off a chain of events that allowed the Northern Stream to weaken enough by late February for the KU BM event. This almost reminds me of a dance between the Northern Stream and Southern Stream. When the NS becomes too overpowering it’s like the it keeps stepping on the feet of the STJ suppressing it too much. When the Northern Stream backs off just enough and allows the STJ to lead, then it opens the door for great Benchmark KU events like in late February.

Rainfall data from Easton site-

I believe that there’s notable reporting lag. I don’t mean just that the map is as of 8AM of two days ago (4/28). Based on looking at rainfall reports across the SE for prior to 8AM on Tue there was moderate to heavy rainfall in portions of especially N AL to NW SC during the several days prior to April 28th. Despite that, some of those counties actually got worse vs the map as of the prior weekly map. I believe that due to the time needed to gather reports that there’s average reporting lag of perhaps a few days. In other words, these maps as of Tue at 8AM are in reality probably reflecting closer to, say, an average of 8AM on Saturday or whatever. Tue at 8AM is just the deadline to get reports in so they have time to compile the map for the Thu AM release. In reality, there’d be reports coming in before Tue…say on a Saturday for example. And then that Sat submission could have been based on a Fri or Thu observation.

Another cool day with a mix of rn/sn shwrs on tap.

What a perfect 10 day stretch for the lawns and gardens. We Ireland. Landscape spring-up tracking a few weeks ahead of last year.

I set it for 5 min obs and picked the max hours(720). A bar graph shows each time it rained/amount, and at the top of the graph it displays total for the period.

So it sounds pretty frontier and skeptical....but I am open to it.

Oh, month to date rainfall. Interesting. @wxmeddler might be a useful product to add to the page!

0.25”

Would recommend a Tempest as a quick replacement. I've had one for several years and it's quite cost effective. If you get a backup power pack from them, your data will be preserved and uploaded post-event for documentation. It's a very nice backyard product.

You don’t get better ocean/atmosphere coupling (Bjerknes feedback) then this:

Down to the final day!

You probably won’t find much literature related to the Northern Stream intensity across the NP following SSWs since it’s a bit of a niche topic. Plus this stronger Northern Stream only emerged since 2018-2019 and might be to short of an interval to gain much interest for research.

Decent call. Front moving through, but the stronger front moved through a few days ago. Cooler wx already in play. A mix of precip across the N areas, as more cooler air moves into the sub. At least CO is getting some much needed precip with this pattern.

Solid lightning show here

Yup...this is why I have theorized that we actually want a RONI equal to, or exceeding the ONI. The lagging RONI is indicative of competing cool ENSO AAM. This point it what was lost on me in 2015 and 2023.

I think when you look at December 2015 alone, it was an anomalous configuration for a super Nino. The lack of a strong southern stream in the SE US allowed storms to cut, so you had both this bad combo of a pac jet extension to the west coast combined with a Nina-like SE ridge configuration. Compare this to December 1997 where you have a strong southern stream extending all the way across the southern US, which is the more canonical Nino outcome. Just giving 1 example of how we can do better than 15-16.

It all comes down to your budget. If it is 20K you can have the best of the best. If it is $500-$1,000 you can get a lot of great shots in bright light but struggle in the mornings and evenings. With any modern camera you can get fantastic shots. In my experience, the hit rate goes up the more you spend.

April 30 2004: After a high temperature of 91 on the previous day in the Twin Cities, the mercury tumbles to 47 degrees by the morning. St. Cloud sheds 50 degrees over 12 hours. 1967: Tornadoes hit southern Minnesota. Some of the towns affected were Albert Lea, Waseca, Wells, and Owatonna. For Thursday, April 30, 2026 1852 - A tornado, following the same track as the famous "Tri-state Tornado" of 1925, struck the town of New Harmony IND. Just sixteen persons were killed by the twister, due to the sparse settlement. The "Tri-state Tornado" killed 695 persons. (David Ludlum) 1953 - A tornado 300 yards in width leveled homes on the north side of Warner-Robins GA, and barracks on the south side of the Warner-Robins Air Force Base. (The Weather Channel) 1987 - Thunderstorms developing along a cold front produced severe weather in Idaho, Utah, Wyoming and Montana. Thunderstorms produced wind gusts to 100 mph in Lincoln, Mineral and Sanders counties. Twenty-three cities in the central and southeastern U.S. reported record high temperatures for the date. Memphis TN was the hot spot in the nation with a record high of 94 degrees. (The National Weather Summary) (Storm Data) 1988 - A cold front produced high winds in the southwestern U.S. Winds gusting to 90 mph in southwestern Utah downed power lines, and damaged trees and outbuildings. The high winds also downed power lines in Nevada, completely knocking out power in the town of Henderson. (The National Weather Summary) (Storm Data) 1989 - Thunderstorms produced severe weather in central and eastern Texas. Hail three inches in diameter was reported at Cool, and thunderstorm winds gusted to 80 mph at Hillsboro. For the first time of record Oklahoma City went through the entire month of April without a single thunderstorm. (The National Weather Summary) (Storm Data) (The Weather Channel) 1990 - Late afternoon and evening thunderstorms produced severe weather in southern Virginia and the Carolinas, with tennis ball size hail reported southeast of Chesnee SC. Thunderstorms moving over the Chesapeake Bay flooded U.S. Highway 50 on Kent Island MD with several inches of water resulting in a seventeen-mile long traffic jam. (The National Weather Summary) (Storm Data)

How does this spring rank on LI? Do you have stats for Farmingdale?

Yea, all of the strong El Nino events that worked out in terms of an active east coast winter had a pronounced period of NAO blocking...only real argument to be made is 2002, but that is significantly weaker than this event should be.

Extreme drought exploded in NC this week. Exceptional drought has developed east of Charlotte: https://droughtmonitor.unl.edu/CurrentMap/StateDroughtMonitor.aspx?NC Hopefully this is the peak

What i observed in Raleigh last night as we actually got a thunderstorm for once this spring: