dendrite

Sausage fest here. Turkey sausage.

0.26” of

Anyway…enough about that. 32.4° with L- Pack is around 2”

I don’t even think we disagree? The instrumentation is accurate when sited and functioning properly and maintained. Unfortunately it’s a struggle to accomplish those things sometimes. Those Vaisala sensors have accuracy greater than 0.1C, but it doesn’t mean a lot if your siting doesn’t accurately represent the 2m temp. But we’ve called out bad ASOS data here a lot…CON, BOS, ORH, BDL, DAW…they’ve all had issues time to time. It’s usually easy to pick out the error on MADIS charts because most of them have a step change.

PHNL was a joke from the get go. The siting was pure sand. Lots of manned obs were trash too. MHT ran too warm for years before ASOS. Lots of bad COOP data too. I think CON was on the side of a brick building in the 1800s. Wherever you look you can find bad obs in different eras. The ASOS temp is very accurate, but like any readings, it’s only as good as its siting and maintenance.

Well I actually think ASOS is pretty good. The bigger issues in my mind are siting and a lack up upkeep in sensor maintenance. GYX had issues at CON years ago because airport maintenance decided to put dark mulch around the ASOS so they didn’t have to mow anymore. BDL just had an issue fixed last year that was causing them to run a solid 2F too warm. But I don’t have an issue with digital thermometers and fan aspiration. And I seem to recall someone telling me once that they had wanted to have automation take over at the Visitor Center, but the digital temps consistently ran cooler than the max/min in the Stevenson screen so it never happened. The same thing happened at Central Park when that poor excuse for an ASOS replaced the COOP.

They’re shattering records in areas of sparse population. It’s simply a record breaking airmass.

Positive to neutral…and if you look at the 10-14 day forecasts it’s been verifying more positive.

0.6” snow 31.6° with -ZR and an occasional frozen hydrometeor.

Yup…all pure snow now here too. Probably 3/4sm -SN

It’s been pulsing here too. Just had a burst of heavier snow, but it’s been mostly lighter refrozen mangled flake garbage. There’s no legit sleet yet though. CC on the various radars has the full melting layer near CON.

And AK has been cold, but the really extreme departures have been radiational cooling. Fairbanks hasn’t been threatening low max records.

It’s not UHI

Picking up again, but it’s still refrozen flakes with a sleet-like sound. Radar looks abysmal.

Trying to stay safe

Most models are flipping the rain in C/E MA over to snow tomorrow and then swing an inverted trough through during the evening bringing a N-S oriented band of snow.

Barely. 31.0° -SN Just a dusting so far. It almost looks mixy at times…hard to tell in the early light. The flakes are heavily rimed though.

Screwed 6 ways from Sunday

NAM is little snow too. Not complaining.

Haha HRRR is almost no snow here…mix to rain.

“Only” 107° for Yuma today. 6 100°+ readings for March there on record coming into this year (max 102°) and their last 4 days have been 103-106-109-107.

3rd straight 105° at PHX today. They had one (1) 100° reading ever in March going back to 1895 and they’ve pulled 102-105-105-105 the last 4 days.

Everyone is blowing away their records equally as impressive though. I don’t think the UHI has much to do with this…especially on daytime highs.

Those 1911 readings look legit…brutal cold on the original COOP forms for multiple sites. -68 at Allakaket is nuts for March. Alaskan yore.