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February storm threat discussion


Ellinwood

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why?....wasn't it a pretty straightforward event?...did the euro have it OTS?...I don't remember

Pretty much..it had a scraper event...like advisory for the coast for almost every run except one I think. It way too far SE. One of the only KUs I remember where it really bit the big one.

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Pretty much..it had a scraper event...like advisory for the coast for almost every run except one I think. It way too far SE. One of the only KUs I remember where it really bit the big one.

I remember that. It never really caught on. The Gfs and Jma had the same solution locked from Wednesday till storm started

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I remember that. It never really caught on. The Gfs and Jma had the same solution locked from Wednesday till storm started

The JMA is probably going to have to be inducted into the HOF of models just because of how often it shows huge KU events...so every time it verifies, it looks good but everyone forgets all the times it showed it and it didn't happen. Its the equivalent of the pitcher in baseball who pitched in like 20 World Series game 7s and won 6 of them so he is amazing, but everyone forgets the time he lost the other 14. Obviously there is no such pitcher, but that is what the JMA would be.

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The JMA is probably going to have to be inducted into the HOF of models just because of how often it shows huge KU events...so every time it verifies, it looks good but everyone forgets all the times it showed it and it didn't happen. Its the equivalent of the pitcher in baseball who pitched in like 20 World Series game 7s and won 6 of them so he is amazing, but everyone forgets the time he lost the other 14. Obviously there is no such pitcher, but that is what the JMA would be.

Lol since it does show alot of big storms all the time it's almost always first to pick them up. Also if JMA does not have a big event...it's a good sign there won't be one period

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Interesting that is has that same wave as the GFS though.

Yes. I suppose a slower ejection of the s/w and/or a faster retreat of the Arctic heights/PV would bring quite the different solution.

Regardless of what the outcomes are, it is refreshing to see some potential, at the very least, within the next 10 days.

This isn't the snowiest or coldest pattern by any means but it is definitely a major improvement from before (which goes without saying I guess).

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BUFKIT's for BWI - Tomorrow's "threat"

00z GFS (QPF total .075)

120208/1800Z 42 VRB02KT 34.9F RASN

120208/2100Z 45 VRB01KT 34.5F RASN

120209/0000Z 48 VRB02KT 33.3F RASN

First hour of the Vday threat (QPF for this hour 0.016)

120214/1200Z 180 08008KT 21.9F SNOW

06z GFS (QPF total .071)

120208/1800Z 36 VRB01KT 36.1F RASN

120208/2100Z 39 VRB01KT 36.9F RASN

120209/0000Z 42 VRB02KT 34.9F RASN

00z NAM (QPF total .258)

120208/1800Z 42 03003KT 33.3F RASN

120208/1900Z 43 03003KT 33.6F RASN

120208/2000Z 44 04003KT 33.4F SNOW

120208/2100Z 45 04004KT 33.1F RASN

120208/2200Z 46 04003KT 33.1F SNOW

120208/2300Z 47 05003KT 32.7F RASN

120209/0000Z 48 02003KT 32.7F RASN

120209/0100Z 49 33004KT 32.7F RASN

120209/0200Z 50 32004KT 32.9F RASN

06z NAM (QPF total .068)

120208/2100Z 39 VRB02KT 35.6F RASN

120208/2200Z 40 VRB02KT 35.1F RASN

120208/2300Z 41 VRB01KT 34.2F RASN

120209/0000Z 42 VRB02KT 34.0F RASN

120209/0100Z 43 VRB02KT 33.8F RASN

120209/0200Z 44 VRB02KT 33.8F RASN

120209/0300Z 45 31003KT 34.0F RASN

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My Point and Click for my house

Wednesday: Snow, mainly after 10am. High near 36. Northeast wind between 3 and 5 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 2 inches possible.

Wednesday Night: Snow, mainly before 7pm. Low around 28. Calm wind becoming west around 6 mph. Chance of precipitation is 80%

Point and Click for work

Wednesday: Snow, mainly after 1pm. High near 38. Northeast wind around 5 mph becoming calm. Chance of precipitation is 80%. New snow accumulation of less than one inch possible.

Wednesday Night: Snow, mainly before 7pm. Low around 35. Calm wind becoming west around 6 mph. Chance of precipitation is 80%

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LWX discussion as of 4am

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...

-- Changed Discussion --

A SHORTWAVE TROUGH WILL PASS THRU THE MID-ATLANTIC STATES ON WED. WHILE DYNAMICS AND MOISTURE WITH THIS SYSTEM ARE NOT ALL THAT IMPRESSIVE...UPPER DIVG IN LEFT-ENTRANCE REGION OF ULVL JET-STREAK AND DPVA AHEAD OF THE VORT MAX WILL PROVIDE SOME FORCING FOR LGT PRECIP ON WED. MODELS IN FAIRLY GOOD AGREEMENT WITH TIMING AND QPF. HAVE INCREASED POPS TO LIKELY ACROSS MOST OF THE CWA. PRECIP WILL LIKELY OVERSPREAD LOCATIONS NEAR AND WEST OF THE BLUE RIDGE DURING THE MRNG BEFORE REACHING THE CITIES BY THE MIDDAY/AFTN HRS.

AS IS OFTEN THE CASE...MODELS DISCREPANCIES RESIDE WITHIN THE BOUNDARY-LAYER. PTYPE WILL BE DETERMINED BY TEMPS IN THE BOUNDARY LAYER. PREFER A COLDER SOLUTION THAN PREVIOUS FCSTS HAVE INDICATED. GIVEN THE DRY AIRMASS ALREADY IN PLACE /DEWPOINTS IN THE 20S/... EVAPORATIVE EFFECTS IN THE BOUNDARY LAYER WILL CAUSE BOUNDARY LAYER TEMPS TO COOL AS PRECIP REACHES THE GROUND. DESPITE MODEL DIFFERENCES IN BOUNDARY-LAYER/SFC TEMPS DURING THE DAY...MOST GUIDANCE IN AGREEMENT WITH WET-BULB TEMP PROFILES GENERALLY AT OR BELOW FREEZING THRU MOST OF THIS EVENT ACROSS MUCH OF THE ERN WV PANHANDLE...NRN MD AND EXTREME NWRN VA. PTYPE WILL LIKELY BE ALL SNOW ACROSS THESE AREAS. LGT QPF AND MARGINAL SFC TEMPS WILL LIMIT SNOWFALL ACCUMULATIONS...BUT THERE IS A POTENTIAL FOR 1-2 INCHES OF SNOW. FURTHER SOUTH AND EAST TOWARD THE CITIES/CENTRAL VA/SRN MD...PTYPE IS LESS CERTAIN DUE TO THE SLIGHTLY WARMER BOUNDARY LAYER TEMPS. HAVE BLANKETED THE AREA WITH RA OR SN. SUBSEQUENT SHIFTS WILL REFINE RA-SN LINE AS WE GET CLOSER TO THE EVENT.

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