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Northern Ohio Obs/Discussion


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CLE seems to be set on a general 4-6" event over the weekend. Not sure I would be throwing amounts out just yet given recent model performance.

 

I'd probably go 4-8" just because higher snow ratios could bump up totals over 6" but it's a safe bet I'd think for a general total. Take into consideration too that this system is a Colorado low and usually they do not go too far south

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I'd probably go 4-8" just because higher snow ratios could bump up totals over 6" but it's a safe bet I'd think for a general total. Take into consideration too that this system is a Colorado low and usually they do not go too far south

 

That's my concern. Seems like the past 2 storms have verified weaker and further SE than what was modeled just 24 hrs prior. I'll feel a lot more confident after today 12z runs. I fell for some of teaser runs with the past 2 storms.

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Yeah. After the last two storms came in much weaker and drier I'm not expecting more than 3-5" out of this. I'm sure there'll be a few NAM runs with 0.75" before it hits. Considering the Euro has been pretty consistent with about .40" liquid, 3-5" seems like the way to go.

We sit in a pretty good spot to at least get something though. This would really have to falter for this to be a complete swing and miss.

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Yeah. After the last two storms came in much weaker and drier I'm not expecting more than 3-5" out of this. I'm sure there'll be a few NAM runs with 0.75" before it hits. Considering the Euro has been pretty consistent with about .40" liquid, 3-5" seems like the way to go.

We sit in a pretty good spot to at least get something though. This would really have to falter for this to be a complete swing and miss.

 

Jinxed for sure  :whistle: . But seriously, we are in a pretty good spot. Moisture will be the key with this storm, and a slow decay before transferring energy.

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Sure why not

SAT 06Z 14-DEC  -2.7    -8.3    1025      69      93    0.01     553     533    SAT 12Z 14-DEC  -3.2    -6.8    1023      87      97    0.10     551     533    SAT 18Z 14-DEC  -0.7    -4.5    1017      90      98    0.13     548     534    SUN 00Z 15-DEC  -0.2    -3.6    1012      96      99    0.19     546     536    SUN 06Z 15-DEC  -0.6    -5.3    1011      97      62    0.08     542     533    SUN 12Z 15-DEC  -4.2   -10.6    1016      87      20    0.01     542     530    SUN 18Z 15-DEC  -4.9   -13.5    1017      79      66    0.01     540     527    MON 00Z 16-DEC  -6.9   -12.5    1019      80      98    0.01     539     525    MON 06Z 16-DEC  -9.0   -15.9    1022      79      36    0.02     540     524    MON 12Z 16-DEC -11.4   -13.4    1025      80      60    0.00     542     524    MON 18Z 16-DEC  -5.5   -11.7    1025      61      99    0.01     542     523    

0.51" of liquid of synoptic snow through 1AM Sunday, then high 700mb RH's and cold enough temperatures for LES through Monday morning. I haven't looked at wind direction much for this event but the Euro at least suggests some half decent LES.

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Sure why not

SAT 06Z 14-DEC -2.7 -8.3 1025 69 93 0.01 553 533

SAT 12Z 14-DEC -3.2 -6.8 1023 87 97 0.10 551 533

SAT 18Z 14-DEC -0.7 -4.5 1017 90 98 0.13 548 534

SUN 00Z 15-DEC -0.2 -3.6 1012 96 99 0.19 546 536

SUN 06Z 15-DEC -0.6 -5.3 1011 97 62 0.08 542 533

SUN 12Z 15-DEC -4.2 -10.6 1016 87 20 0.01 542 530

SUN 18Z 15-DEC -4.9 -13.5 1017 79 66 0.01 540 527

MON 00Z 16-DEC -6.9 -12.5 1019 80 98 0.01 539 525

MON 06Z 16-DEC -9.0 -15.9 1022 79 36 0.02 540 524

MON 12Z 16-DEC -11.4 -13.4 1025 80 60 0.00 542 524

MON 18Z 16-DEC -5.5 -11.7 1025 61 99 0.01 542 523

0.51" of liquid of synoptic snow through 1AM Sunday, then high 700mb RH's and cold enough temperatures for LES through Monday morning. I haven't looked at wind direction much for this event but the Euro at least suggests some half decent LES.

Thank you sir. Not bad at all.

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I don't see any reason to not jump in with a 3-6" call for all of us from the synoptic snow. Looking at a number of things on the 18z NAM here I think there could be the potential for some bursts of moderate to heavy snow that push some areas a tad over 6". The DGZ will be between 150-200mb so snow growth will be good. With surface temps near freezing don't want to go insane with possible with ratios, but even a 13:1 ratio would yield around 6.5" for CLE on the Euro's 0.51" liquid.

 

The NAM is showing a decently strong low to mid level jet nosing into southern OH Saturday morning with pretty good higher theta-e advection going on. That could produce some corridors of moderate to heavy snow if it verifies. The 18z NAM shows the best lift with this low-mid level WAA closer to I-70 but it's something to watch if things trend a tad bit farther north.

 

The NAM also shows parts of OH (again a bit south of us) in the right-entrance portion of a departing jet streak and left-exit portion of an incoming jet streak late Friday night well into Saturday. This would provide good upper level lift and also support bursts of heavier snow.

 

Again right now the NAM shows these possible mechanisms for heavy snow a bit to our south, so the safe call is 12-18 hours of light to possibly moderate snow with 3-5"/3-6" type amounts for northern OH. But it wouldn't shock me if there's a corridor of 6-9" type amounts between like US 30 and I-70. We'll have to see how that plays out.

 

The GFS/NAM bring the winds around to the WNW by Sunday and suggest a half decent LES Sunday into Sunday night...the Euro waits to bring the winds around until late Sunday night and suggests some LES into Monday.

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Euro backed off a bit. It was showing about 0.40" last night, down from about 0.50".

Some of the hi Res models were showing a bit of a snow hole around northeast Ohio, so that's one potential negative for tomorrow. I'll still ride a 3-5" call for here. With a potential couple inch LES bonus afterwards.

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Euro backed off a bit. It was showing about 0.40" last night, down from about 0.50".

Some of the hi Res models were showing a bit of a snow hole around northeast Ohio, so that's one potential negative for tomorrow. I'll still ride a 3-5" call for here. With a potential couple inch LES bonus afterwards.

 

Winds will be from the east/southeast... so that snowhole is definitely a possibility. If we watch the snowhole slowly fill 3-5" seems reasonable, but If its a quick start I think 4-8" will verify. Surprised the euro backed off given the stronger low.

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I think it's interesting that CLE opted not to go with a warning. It seems like Lake Effect Snow warnings are issued left and right for the most narrow of situations and isolated strung out events, yet this will be the first high impact snow event for all areas and regions of the season and no warning. Also keep in mind that CLE hasn't had a 6" snowstorm since the 2010/2011 snow season. 

 

Not too often you see a forecast text of 4-8" and an advisory.

 

345 PM EST FRI DEC 13 2013

...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM MIDNIGHT
TONIGHT TO 10 PM EST SATURDAY...

* ACCUMULATIONS...5 TO 7 INCHES.

 

zone forecast:

 

Saturday Night: Snow in the evening...then snow showers after midnight. Total snow accumulation of 4 to 8 inches. Lows in the lower 20s. East winds 5 to 10 mph...becoming northwest after midnight. Chance of snow near 100 percent.

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Right now see no reason to deviate from 3-5" locally 6"+ of synoptic snow. 24 hour warning criteria is 8"+ so technically this is an advisory criteria event, but I agree that some of their LES warnings are issued for lower impact events than what we'll see tomorrow.

There could be a window of decent lake effect Sunday evening-Monday morning with banding into parts of Cuyahoga County on a well aligned WNW flow.

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Yeah, I woke up and saw it snowing and was surprised to see the radar. It should be dumping snow with those returns.

 

NAM and GFS are trying to bring the thermals just warm enough for a brief switch to sleet or some mixed rain later this afternoon. Figures.

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Yeah, I woke up and saw it snowing and was surprised to see the radar. It should be dumping snow with those returns.

 

NAM and GFS are trying to bring the thermals just warm enough for a brief switch to sleet or some mixed rain later this afternoon. Figures.

 

Close to 2 inches after measuring. Radar is filling in nicely again. Still a long way to go to the 5-7" range may verify. Strange to have such light snow with those returns. I think any mixing will stay to the south hopefully.

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