dendrite

Same location in CT...same time. 3k NAM vs GFS. The NAM is slightly more backed in the low levels with a lower mixed layer while the GFS is deeply mixed WNW flow up to H75.

Although I still wonder if models are somewhat overmixing. The 3k NAM is still 70+ dews all day. The GFS is trying to mix down 50s dews with 100F+ temps. I'm tossing that without having some kind of prefrontal trough like we had in 7/2011.

Today is a different beast from yesterday. When those westerlies start mixing down the temp is going to spike and the dews drop off.

The consoles sample variables at different time increments. So the dew probably changed from the time one console pinged it to when the other one did…just a guess. But I had 82° for a dew here as well. The Davis ones can become a little oversaturated with age, but we do get more pooled up moisture from evapotranspiration than wide open airports. But temp and dews actually change pretty rapidly with responsive equipment. Mercury thermometers have lag. These digital probes are almost instantaneous. That’s why ASOS uses running 5 minute averages to try to simulate the slower response of the mercury thermometers.

IZG 88F at 8a

I think he was referring to OXC. But still that’s an AWOS too. I don’t think we had anything over 78° at an ASOS?

I think that’s the first time I’ve ever seen 100° at LCI on MOS. Anyway, currently 69.8°. I see Tol is still 77°.

It’s go time.

A HADS site in North Springfield, VT hit 103F. https://mesowest.utah.edu/cgi-bin/droman/meso_base_dyn.cgi?stn=NOSV1&time=GMT

Today’s highs PBG with the 101°

Is that passive or aspirated? Same sensors?

They told us mid 60s dews at most. WTTTE

18z MAV MHT 103 CON 102 ASH 102 DAW 101 LEB 101 LCI 98 MWN 66 BDL 103 HFD 102 MMK 100 OWD 103 LWM 102 BED 102 TAN 102 CEF 102 BAF 102 FIT 101 BOS 100 ORH 98 SFM 101 PWM 100 PVD 99

Sounds a bit...cranky?

84.8/77

BTV mixing out now with more of a W component and up to 99F.

Almost the hottest heat index on record (since 1948) at CON at 4pm

92.4/75

Good indication of what will happen tomorrow. Scorchah

Check out that temp jump/dew drop when the wind flipped W over 20mph. https://mesowest.utah.edu/cgi-bin/droman/meso_base_dyn.cgi?stn=KPBG&time=GMT

Mine has a 2F bias. Factor that in and it's pretty much spot on.

Heat indices get exponentially wonky when the dews get high. There's going to be higher dews over the vegetative/wet areas though. The Davis sensors may be a little high, but the dews definitely pool from evapotranspiration on these dead air heat days. My dew hit 82F earlier...but I usually only post here the lowest dew I record in the previous 15 mins or so. Like my dew is 78F right now, but it recorded 75F twice in the last 15 mins so I'll call it 91/75. Jives more with the ASOS sites.

Lay on a hard floor flat on your wet back and make suctiony fart noises.

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