I’m going go out on a limb here and say someone in this highlighted area is probably going to get a foot plus of rain tomorrow. Not widespread to be clear but isolated totals 12”+ are definitely reasonable. I’ll explain below👇 #pawx#njwx#ida#rain#flooding
As Ida will be undergoing baroclinic process and transitioning from a tropical depression into a extratropical storm we’ll actually see some similarities to a winter storm. Warm air advection will be playing a part in aiding Frontogenesis tomorrow across the Northeast as…
The contrast in temperature as noted in the pictures will create an enhanced area of lift. Along the edge of those juiciest dewpoints and under the FGEN setup that is where a combination of the best forcing along with moisture content will be aiding in producing anomalous…
Rainfall rates potentially 1-3”/hr at times. Here’s good look from a broad view of what’s going on. Combo of FGEN banding and the remnant moisture of #Ida plus the cyclogenesis will aid in creating a widespread 2-4” of rainfall across the Northeast and Midatlantic…
But also create swaths of 4-8 and 3-6” with isolated totals 10-12”+ . You can see the moisture flow being pulled in from the GOM aiding in initiating Convective activity on the coast and offshore simultaneously while Ida’s remnants get pulled into Frontogenesis intiation…
Also should be noted it’s not 24 hours of rainfall but likely a 12 hour window of precip with the bulk of the heaviest precip happening in a 4-6 hour timeframe tomorrow into Thursday morning. I’ll be doing a shorter thread on Southern New England Flood thread next. Stay safe yall
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Massachusetts has the potential to see a very high end flood event by the way too I keep hearing PA to CT. Just cause that’s where the high risk doesn’t mean MA isn’t as risk to see some dangerous even borderline life threatening rainfall too. MA is less than 15 miles away from..
Edge of the high risk btw too and the risk for 3-6 and 4-8” of rainfall definitely exists for MA particular around and S of 495. So if you hear PA-CT that doesn’t mean MA is not as risk to see life threatening flash flooding because we most certainly are even if there is a...
Slightly higher chance for deadly flooding to the S and W MA is by no means in the clear of flash flooding with life threatening potential.
The NHC explicitly states in their forecast cone it can multiple categories off days out in advance. That’s why the NHC makes the cone for 1-3 days and why it’s called the extended cone days 4 and 5. The 1st forecast explicitly called for a rapidly intensifying hurricane...
The forecast was very clear even 5 days out the potential for a major hurricane was very much increasing in likelihood. The messaging was clear as well along with models indicating a Cat 4 storm was possible. If u can’t understand how the NHC cone works I dont think you should...
be relaying the forecast. If u understood the frequency the NHC forecasts a near Major Hurricane 5 days in advance then it would have been clear a Category 4 was certainly possible. Or if u understood what kind of environment from a meteorological perspective Ida was moving into.
My next thread focuses more on New England and Hudson Valley where you can see what I have. To be clear areas outside can see 3-6” even 4-8” too but this is area I’m highlighting most for concern of seeing isolated double digit rainfall totals. Go in depth 👇 #mawx#ctwx#nywx
As I mentioned before FGEN banding setup will create forcing and lift in the atmosphere and along that front we’ll have to look for prolific rainfall rates being setup. Imagine in a winter storm where areas that get the most banding we’ll see the most snow but surrounding…
Areas still get a lot of snow just not 18-24 but instead the 8-14” totals. In this case it’s rainfall though so areas outside of that banding we’ll still see 2-4/3-6” of rain which is a lot but areas just north of the front will have a chance to see over a half foot and maybe…