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January 19-21 MW/GL/OV Storm Potential


snowlover2

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I am interested to see the 12Z ensembles. Yesterday the mean was much less impressive compared to its op run with the depth of the cold surge/upper trough.

post-999-0-74487200-1295117473.gif

Amazing. I know you're talking about the EURO ensembles, but if you go take a look at the 12z GFS ensembles, it's like this storm doesn't exist. Just a dry NW flow.

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There is certainly a potential it could, in this situation I'd try and get through system 1 before worrying about system 2 as we are diving into a pattern change.

Yeah, the EURO's the only model indicating this type of storm. GFS and UKIE hardly have a ripple in the flow and the GGEM, which having more of a storm, is much more progressive with its depiction

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This one might be a candidate for the "NW Trend"..

I'll take it :) Plenty of room to go NW and still crush us here...Just not too much :P

I'm not super excited yet, but if only one model is going to give me snow I'd pick the Euro any day. Plus we're at like day 5-6 range which isn't terrible. When was the last time an Ohio poster started a storm thread? :guitar:

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I'll take it :) Plenty of room to go NW and still crush us here...Just not too much :P

I'm not super excited yet, but if only one model is going to give me snow I'd pick the Euro any day. Plus we're at like day 5-6 range which isn't terrible. When was the last time an Ohio poster started a storm thread? :guitar:

i don't get the feeling this is a candidate for a miss nw/precip issues with us. Looks to me more like an overruning event out of the southern plains to the northeast along the baroclinic zone. Biggest risk with this one is probably suppression.

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i don't get the feeling this is a candidate for a miss nw/precip issues with us. Looks to me more like an overruning event out of the southern plains to the northeast along the baroclinic zone. Biggest risk with this one is probably suppression.

Joseph E Bastardi is buying the event

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i don't get the feeling this is a candidate for a miss nw/precip issues with us. Looks to me more like an overruning event out of the southern plains to the northeast along the baroclinic zone. Biggest risk with this one is probably suppression.

The NAO is pretty much neutral going slightly negative.

that is perfect. with super cold arctic air ready to roll son.

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AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE INDIANAPOLIS IN

330 PM EST SAT JAN 15 2011

.LONG TERM...WEDNESDAY THROUGH SATURDAY.

HIGH PRESSURE BEHIND TUESDAY COLD FRONT WILL MOVE OUR REGION AND

SOUTHERN GREAT LAKES WEDNESDAY. A STRONG UPPER TROUGH AND COLD

FRONT MAY BRING SNOW BACK ACROSS OUR REGION THURSDAY. 12Z GFS SHOWED

PRACTICALLY NO PRECIPITATION FROM THIS SYSTEM. BUT 12Z GEM AND

EUROPEAN MODELS STILL INDICATE SNOW AROUND THURSDAY.

AFTER THIS FRONT MOVES THROUGH BITTERLY COLD AIR WILL BE THE RULE

AND SOME AREAS COULD SEE THE COLDEST WEATHER SO FAR THIS SEASON.

DID NOT MAKE ANY SIGNIFICANT CHANGES FROM HPC TEMPERATURES IN LATER

PERIOD.

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AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE WILMINGTON OH

335 PM EST SAT JAN 15 2011

.LONG TERM /TUESDAY THROUGH SATURDAY/...

HAVE USED A BLEND OF THE 00Z/12Z ECMWF AND HPC GUIDANCE FOR THE LONG

TERM FORECAST.

COLD FRONT IS FORECAST TO PASS ACROSS THE REGION LATE TUESDAY

AFTERNOON AND EVENING. TEMPERATURES WILL BE WARM ENOUGH FOR RAIN

SHOWERS OUT AHEAD OF THE FRONT. AS THE FRONT SLIPS TO THE EAST LATE

TUESDAY AFTERNOON AND NIGHT...COLDER AIR FILTERING IN BEHIND THE

FRONT MAY OFFER A CHANCE OF RAIN/SNOW BEFORE ENDING. LITTLE

ACCUMULATION IS EXPECTED ATTM.

ON WEDNESDAY...HIGH PRESSURE WILL BRIEFLY BUILD INTO THE AREA

WHICH WILL BRING A RETURN TO BELOW NORMAL TEMPERATURES.

FOR THE REMAINDER OF THE EXTENDED FORECAST...THURSDAY THROUGH

SATURDAY...THE UPPER LEVEL FLOW PATTERN ACROSS CANADA AND THE

EASTERN U.S. WILL UNDERGO SIGNIFICANT AMPLIFICATION...WHICH WILL

ALLOW ARCTIC AIR TO INVADE THE GREAT LAKES AND OHIO VALLEY. THE

BIG QUESTION WILL BE HOW MUCH SNOW WILL ACCOMPANY AN ARCTIC FRONT ON

THURSDAY...AND WHETHER IT CAN TAP INTO MOISTURE FROM THE GULF OF

MEXICO. HAVE JUST GONE WITH A CHANCE OF SNOW SHOWERS. ARCTIC AIR IS

EXPECTED TO BE FIRMLY IN PLACE FRIDAY AND SATURDAY WITH PERHAPS SOME

LAKE EFFECT SNOW SHOWERS DOWNWIND OF LAKE MICHIGAN. OPERATIONAL GFS

MOS GUIDANCE IS FORECASTING TEMPERATURES 20 DEGREES BELOW

NORMAL..WHICH IS SIGNIFICANT GIVEN THAT MOS GUIDANCE USUALLY TRENDS

TOWARD CLIMATOLOGY. AS A RESULT...HAVE HIGHER CONFIDENCE THAN

PREVIOUS FEW DAYS TO GO MUCH BELOW NORMAL FOR HIGHS AND LOWS. HIGHS

FRIDAY AND SATURDAY WILL LIKELY REMAIN IN THE LOWER TO MID TEENS

WITH LOWS FRIDAY NIGHT DROPPING INTO THE SINGLE DIGITS TO A FEW

DEGREES BELOW ZERO. THE POTENTIAL EXISTS FOR TEMPERATURES TO BE

COLDER THAN THIS...BUT THAT WILL DEPEND IF THE REGION CAN REGAIN

ANOTHER SNOW COVER BY WEEKS END. FINALLY...COLD TEMPERATURES AND

WIND WILL PUSH WIND CHILL VALUES WELL BELOW ZERO. WILL HIGHLIGHT THIS

IN THE HWO.

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There are some subtle changes at H5 at 114 that make it seem like it's creeping towards the EURO. Trough axis slightly further west and digging a bit more.

i like what i see on the gfs. This is usually the routine of how it finds a storm. Showing it weak at 120 as it starts to sniff it out is a perfect place to be.

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Here's the Sat. IWX take on the LES potential from this system.

A

DIGGING SW IS EXPECTED TO DROP SE FROM THE NRN PLAINS AND MOVE

ACROSS THE GRTLKS THU...AND TO THE ERN SEABOARD FRI. SOME -SN MAY

ACCOMPANY/PRECEDE THIS SYSTEM...FOLLOWED BY LES IN ITS WAKE AND

BITTER COLD. INVERSION HEIGHTS FCST TO BE A LITTLE HIGHER WITH THIS

EVENT AND BETTER LAKE INDUCED INSTABILITY WITH DELTA T`S REACHING

THE L20S. MODELS ALSO SUGGEST E-W TROUGH WILL SET UP ACROSS THE

GRTLKS MAINTAINING CYCLONIC FLOW OVER LM SO ATTM APPEARS POTENTIAL

FOR ANOTHER PSBLY EVEN MORE SGFNT LES EVENT THU NGT/FRI.

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