
TellicoWx
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Everything posted by TellicoWx
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NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
I wonder if the modeling is picking up on that or if the rates could go a little higher than currently modeled...just not sure subtle inversions are built into the algorithm -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
About the best setup statewide we can get, weak energy passing to the south (no ugly waa) but just strong enough to transport the moisture and lift -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
Agree, soundings are very borderline south of 40 in the valley *as far as impacts to the roadways -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
Looks like maybe even a tad better to me -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
Looking at the soundings across all models for eastern valley..NAM is coldest at the surface (would be similar roads to what Chatt experienced last week), while rest sit around 34-35 with the below freezing mark down to around 1500'. -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
12z Euro -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
Euro folds to NAM -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
00z GFS shifts south along the FL/AL line with the energy..taking the dynamics with it vs 18z -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
Doesnt it have a cold bias (could be wrong)..jw if it is keying on the HP too much. -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
I could see HUN doing something (possibly BNA), but until (or if) the Euro lowers the surface temps I dont see MRX pulling the trigger. SPS yes, Watch no. -
NAM vs the Euro cage match storm, Feb 20 - 21
TellicoWx replied to Holston_River_Rambler's topic in Tennessee Valley
Would like to see the RGEM come on board (with anything really lol)..its pretty much the last one left that squishes the 925 energy, keeping it a strung out mess -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
It's not an expansion of the precip shield as much as it is the path the 925 energy takes to our south. The circles area is the energy on the 00z NAM..as it crosses from MS into AL/GA line, it then transfers off the SE Carolina coast. Starting with the 18z (now 00z), the NAM has ticked slightly south with its path before transfer..taking the moisture return and dynamics to closer along the TN border. GFS is very similar to the NAM, while the 18z Euro took a big step in that direction (it would have looked very similar on snow output but it is about 4-6 degrees warmer right at the surface). How that piece treks south of us, will determine the haves and have nots. -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
00z NAM sounding is almost a mirror image of the sounding last week...would be some nice big wet flakes. -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
Yeah it is..the 925 was a tick further south (but by just 10 mi or so. If NAM is to be believed..10 mi could make a big difference on the cutoff. -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
With the last system it handled the temp profile the best..showed the problems on the road for Chatt vs the other modeling. -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
00z NAM with basically same track with the energy...stronger returns along the southern TN border vs 18z. -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
Looking at the meteograms for the 18z Euro, while the qpf output went up, the surface temps in the eastern valley are a mess...35-40 during the duration of the precip. -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
SREF..kind of like the ensemble of the NAM. Ran in between the NAM runs, usually a good indicator of where the next upcoming NAM run may go. Currently, the Weather Research and Forecasting Non-hydrostatic Mesoscale Model (WRF-NMM) model is run as the NAM, thus, three names (NAM, WRF, or NMM) typically refer to the same model output. The WRF replaced the Eta model on June 13, 2006.[1] The model is run four times a day (00, 06, 12, 18 UTC) out to 84 hours. It is currently run with 12 km horizontal resolution and with three-hour temporal resolution, providing finer detail than other operational forecast models. The NAM ensemble is known as the Short Range Ensemble Forecast (SREF) and runs out 87 hours. -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
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February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
18z GFS looks very similar as far as track with the 925 energy vs 18z NAM (just slightly weaker)...not quite buying the Chatt snowhole with that setup. -
18z NAM quicker and stronger with the 925 transfer from AL to the coast vs 12z...really rooting for you guys.
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February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
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February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
18z NAM slightly shifted the 925 track south (12z thru Montgomery AL...18z 30mi south of Montgomery) which shifted the heaviest totals south of 40. Good run and probably best track along southern TN border (not too far north to mess with temp profile, but still keep the better dynamics across TN. Also deepens the energy quicker as it transfers off the SE coast (great for NC folks and possibly NE TN if it can wrap the moisture over the mountains). -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
The handling of the 925 energy is key...12z NAM has the piece slightly quicker and the furthest north on guidance (along central AL/MS line)..12z Euro is furthest south (along the central LA coastline). GFS is the middle ground, really dont won't that piece going any further north on the NAM..especially anyone south of 40. 12z NAM/Euro: -
February/March 2020 Winter's Last Chance Thread
TellicoWx replied to John1122's topic in Tennessee Valley
NAM starts bringing th moisture across the southern TN border between the 6z and 9z (closer to 8z = 3am...12z is 7am). GFS is slower closer to 11z-12z (6-7am). Yeah it's a daytime event for TN.