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JAN. 6-9 LES Set up


Indystorm

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Did that Erie band reach you guys last night?:thumbsup:

Yeah, BUF even mentioned that in their AFD

NOW...TO MAKE MATTERS MORE INTERESTING...ON THE MESOSCALE WE HAD A

FAIRLY ROBUST BAND OF LK EFFECT OVER LK ERIE MOST OF THE NIGHT. THIS

FORMED LAST EVENING ON A TYPICAL SW-NE ORIENTATION...BUT IT NEVER

MOVED ONSHORE. RATHER...SFC AND LOW LEVEL WINDS BECAME L/V AND

EVEN BACKED TO SE...KEEPING THE BAND OFFSHORE AND EVENTUALLY

SHOVING IT NORTH INTO THE NIAG PENINSULA. AT PRESS TIME...REMNANTS

OF THIS BAND WERE SWINGING NORTHWEST UP ACROSS THE GOLDEN

HORSESHOE OF ONTARIO...YOU DONT SEE LK ERIE SNOW MAKING IT TO

TORONTO VERY OFTEN.

It was enhanced by Ontario, but its origins were definitely Erie. The S/SSW multiband stuff late last night that is. The current E-W band is pure Lk Ontario.

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Yeah, BUF even mentioned that in their AFD

NOW...TO MAKE MATTERS MORE INTERESTING...ON THE MESOSCALE WE HAD A

FAIRLY ROBUST BAND OF LK EFFECT OVER LK ERIE MOST OF THE NIGHT. THIS

FORMED LAST EVENING ON A TYPICAL SW-NE ORIENTATION...BUT IT NEVER

MOVED ONSHORE. RATHER...SFC AND LOW LEVEL WINDS BECAME L/V AND

EVEN BACKED TO SE...KEEPING THE BAND OFFSHORE AND EVENTUALLY

SHOVING IT NORTH INTO THE NIAG PENINSULA. AT PRESS TIME...REMNANTS

OF THIS BAND WERE SWINGING NORTHWEST UP ACROSS THE GOLDEN

HORSESHOE OF ONTARIO...YOU DONT SEE LK ERIE SNOW MAKING IT TO

TORONTO VERY OFTEN.

It was enhanced by Ontario, but its origins were definitely Erie. The S/SSW multiband stuff late last night that is. The current E-W band is pure Lk Ontario.

Someone around Port Colborne ON and Welland ON picked up couple inches from that band :popcorn: btw this a nice radar http://www.wivb.com/...x/weather/radar :snowman:

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AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE NORTHERN INDIANA

724 AM EST SAT JAN 8 2011

..MAJOR LAKE EFFECT SNOWSTORM IN PROGRESS

UPDATE/AVIATION

INTENSE LK EFFECT CONTS TO POUND KSBN TERMINAL AND LTL RELIEF SEEN

NR TERM W/NXT INTENSE WELL DVLPD MESOVORT JUST SOUTH OF HOLLAND MI

DROPPING SSE. UPSTREAM CVRG FLANK IN ASSOCN/W THIS FTR LOOKS TO

ARRIVE BACK INTO THE SBN TERMINAL TWD 14Z W/ANOTHER SVRL HOUR PD OF

VRY HEAVY SNOW. GRIDS A WRECK ATTM AND WILL TRY TO BLEND IN SOME

SHRT TERM HIGHRES GUIDANCE TO TWEAK AMTS HIGHER OVR BERRIEN/ST

JOSEPH. INLAND AREAS REMAIN DIFFICULT W/HEAVY SNOW REACH BUT

W/DEEPER NRLY FETCH SEEN TAKING SHAPE ALONG LONG AXIS OF LK ALG

W/TYPICAL DIURNAL ENHANCEMENT THINK EXISTING HEADLINES ARE OK FOR

NOW. HWVR NEED TO AWAIT 12Z GUIDANCE TO SEE OF SUCCESSION OF

UPSTREAM MESOVORTS DISRUPT FLW ENOUGH TO BACK PRIMARY SNOW BAND WWD

FURTHER INTO NW INDIANA. MANY AREAS IN AND AROUND SOUTH BEND NR 2

FEET ALREADY AND COULD EASILY PICK UP ANOTHER FOOT.

LTL CHG WARRANTED IN PRIOR 06Z TAFS AND CARRIED FWD W/12Z ISSUANCE.

DO NOT XPC MUCH IF ANY IMPROVEMENT UNTIL LATE TONIGHT TIMED

W/EVENTUAL DROP IN EQL HGTS AND BREAKDOWN IN LL FLW.

CONDS WILL DETERIORATE AT KFWA LTR THIS MORNING W/A PD OF MOD SNOW

PSBL THIS AFTN YET WILL NOT VENTURE THAT MENTION YET AND AWAIT

EVOLUTION OF THE BANDS INLAND THROUGH MORNING.

SHORT TERM

MESOSCALE DVLPMNT THIS MORNING CONSIDERABLY COMPLICATING NR TERM

FCST. LEAD SW YIELDING ENHANCED LK EFFECT SNOW BANDS THIS MORNING

PASSING NR KGYY AT THIS HOUR. IMPACT UPSTREAM OF THIS FTR THROUGH

THIS MORNING HAS BEEN SUBSTANTIAL W/RAPID DRAMATIC UPSWING AND

CONSOLIDATION OF SNOW BANDS W/DOMINANT SINGLE BAND IN PLACE FM KBEH N

TO JUST OFFSHORE OF LUDINGTON WHERE A SMALL BUT WELL FORMED

MESOVORT HAD DVLPD EARLIER. OTHER FTR OF NOTE WAS LARGER SCALE SW TROUGH

OVR WRN LK HURON WHICH WILL DUMBBELL WEST THIS MORNING AND THEN

TURN SOUTH DOWN THE LAKE THIS AFTN.

00Z HIGHRES GUIDANCE HAD SHIFTED SLIGHT WWD OF 12/18Z CONSENSUS AND

GIVEN SHRT TERM RUC/HRRR INDICATORS LOOKS VALID AND DUE TO UPSTREAM

AFFECTS FM SECONDARY SW FUJIWARA THIS AFTN. THIS LEADS TO POTENTIAL

SIG PROBS W/CURRENT GRIDDED DEPICTION/PLACEMENT OF HEAVY SNOW AXIS

PARTICULARLY FM LATE THIS MORNING INTO THIS AFTN BUT WHICH LENDS

GREATER CONFIDENCE IN EVENT HANGING ON LONGER AS DEEP

EQL/INVERSION HGTS HOLD ON LONGER YET ALIGN WELL W/IMPLIED 12Z

SUNDAY CUTOFF IN EXISTING WSW. SO FAR LK ENHANCEMENT HAS YIELDED

SUBSTANTIAL SNOW RATES AND WHICH WILL ONLY INCREASE W/FURTHER BAND

CONSOLIDATION TWD DOMINANT SINGLE BAND. TIME/HGT CROSS SECTIONS

IMPLY VRY ROBUST DEEP SATURATION ON THE ORDER OF 150-200 MB AND

MORE INDICATIVE OF A DEEP SYNOPTIC CYCLONE ENVIRONMENT VS A LK

ENHANCED EVENT AND SUSPECT 2-3 INCH PER HOUR SNOW RATES YET TO

COME ESP TWD DAYBREAK AND CONTG WELL INTO SAT EVE AND ALREADY

EVIDENT IN RADAR DATA W/ECHO TOPS OVR LK MI UP TO 16KFT. SO

PRIMARY NR TERM CHG THROUGH SAT AFTN IS TO SHUFFLE BAND

PLACEMENT/ORIENTATION SWWD TO ACCOUNT FOR MODEL IMPLIED SHIFT AND

WHICH ALIGNS BTR W/OBSVD ORIENTATION THIS MORNING. INTERESTINGLY

SOME AREAS COULD SEE RECORD SNOWFALL AMTS INCLUDING SBN W/2 DAY

TOTALS THERE PSBLY HITTING OR EXCEEDING THE 2 FOOT MARK WHICH

WOULD PLACE THIS EVENT TIED FOR 3RD ALL-TIME WITH 24 INCHES

FALLING JAN 26/27 1978.

SECONDARY SW DROPPING DOWN THIS AFTN WILL AGAIN LEAD TO A PD OF LAKE

ENHANCEMENT LINGERING INTO THIS EVENING IN ASSOCN/W SPOKE OF MID LVL

MSTR AND MODULATED FURTHER BY BACKGROUND SYNOPTIC ASCENT AND LIKELY

PIVOTAL TO XPCD MESOVORT TRACK. FLW ADJUSTMENT IN WAKE OF THIS FTR

STILL VRY UNCERTAIN W/PD OF MULTIPLE BANDED DVLPMNT LIKELY BFR

CONGEALING AGAIN. LATEST 06Z OP NAM HOLDS CLOSE W/PRIOR

CONVICTIONS OF 00Z RUN SUGGEST UPGRADING KOSCIUSKO COUNTY TO

ACCOUNT FOR LIKELY HEAVY SNOW ACCUMS THIS MORNING AND AGAIN LT

THIS AFTN/EVE ASSOCD/W REFORMING INTENSE SINGLE BAND ACRS THE NRN

PORTION OF THE COUNTY AND WILL ADD WHITLEY INTO EXISTING ADVISORY

GIVEN PROGGED INLAND PENETRATION OF BOTH MESOVORT AND TRAILING

INTENSE FLANKING LINE THIS EVENING. XPC THIS INTENSE BAND WILL

LINGER FOR SOME TIME GIVEN SLW EROSION TO BOTH LL THERMAL TROUGH

AND MID LVL MSTR PLUME. HEADLINES FAR NW MAY NEED AN EXTENSION

FURTHER INTO SUN AM TO ACCOUNT FOR DIMINISHING YET CONTD SNOW.

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Thanks. Although when you post a 19" snow report it makes me realize I'm getting excited over lightweight stuff as far as LES goes.

I got excited over 2-3" of LES down here in one event last December. :arrowhead: I don't think there's anything wrong with being happy about a 3-5" hit. :)

The 19" in the South Bend area is sweet, but certainly not unprecedented.

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post-257-0-30995700-1294489858.jpg

Transitioned nicely over to a single band. Now we just need those 35 dbz returns to push onshore.

This is a rare situation. Lake bands that usually feed on to the Tug Hill in N.Y. have done a switcheroo and are feeding into Toronto.

It is snowing heavily downtown now and looks like plenty more to come judging by radars.

It has been a long time :snowman::thumbsup:

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Is this correct/legit for South Bend, 8" and 6" in one hour? :faints:

And then a relatively tamer 3" in one hour.

METAR KSBN 081054Z 00000KT 1/4SM +SN FZFG BKN001 OVC006 M08/M09 A2951 RMK AO2 TWR VIS 1/4 SLP006 SNINCR 8/19 P0015 T10831094

METAR KSBN 081154Z 28009KT 1/4SM +SN FZFG VV001 M08/M09 A2954 RMK AO2 TWR VIS 1/4 SLP017 SNINCR 6/23 931162 4/023 P0006 60039 70078 T10831094 11078 21083 52027 $

METAR KSBN 081254Z COR 25005KT 1SM -SN BR FEW011 BKN020 OVC027 M08/M10 A2956 RMK AO2 SFC VIS 3 SLP024 SNINCR 3/24 P0006 T10831100 $

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This is a rare situation. Lake bands that usually feed on to the Tug Hill in N.Y. have done a switcheroo and are feeding into Toronto.

It is snowing heavily downtown now and looks like plenty more to come judging by radars.

It has been a long time :snowman::thumbsup:

Winds should stay SSE through 12z :thumbsup:

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Is this correct/legit for South Bend, 6" in one hour? :faints:

And then a relatively tamer 3" in one hour.

METAR KSBN 081154Z 28009KT 1/4SM +SN FZFG VV001 M08/M09 A2954 RMK AO2 TWR VIS 1/4 SLP017 SNINCR 6/23 931162 4/023 P0006 60039 70078 T10831094 11078 21083 52027 $

METAR KSBN 081254Z COR 25005KT 1SM -SN BR FEW011 BKN020 OVC027 M08/M10 A2956 RMK AO2 SFC VIS 3 SLP024 SNINCR 3/24 P0006 T10831100 $

Radar showed very heavy plume stall the past two hours right over them....it's weakened/moved since...but another faster moving band moving in now

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This is a rare situation. Lake bands that usually feed on to the Tug Hill in N.Y. have done a switcheroo and are feeding into Toronto.

It is snowing heavily downtown now and looks like plenty more to come judging by radars.

It has been a long time :snowman::thumbsup:

Yeah, it's fascinating stuff. I wouldn't be as interested in the exact same amount of snow from a synoptic storm. Mesoscale's so much more interesting for some reason.

How much do you think you've got down there? I'm 7-8cm (~3") here.

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Yeah, it's fascinating stuff. I wouldn't be as interested in the exact same amount of snow from a synoptic storm. Mesoscale's so much more interesting for some reason.

How much do you think you've got down there? I'm 7-8cm (~3") here.

This is so rare :guitar:

I find it more interesting than synoptic snows of same amount. Maybe 8-10 cm in MBY so far.

If it keeps going we could easily get over 6 inches today. Who knew?:arrowhead:

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This is so rare :guitar:

I find it more interesting than synoptic snows of same amount. Maybe 8-10 cm in MBY so far.

If it keeps going we could easily get over 6 inches today. Who knew?:arrowhead:

The models really only started picking up on this potential around 18z yesterday, so there wasn't a lot of advance warning to the public.

+SN right now. Big flakes. Have noticed a slight southward drift in the band which is consistent with the winds continuing to back to the NE, so I'm not sure how much longer we've got in the good stuff. Enjoy it while you can.

post-257-0-74614900-1294493803.jpg

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This is so rare :guitar:

I find it more interesting than synoptic snows of same amount. Maybe 8-10 cm in MBY so far.

If it keeps going we could easily get over 6 inches today. Who knew?:arrowhead:

Congratulations guys. Not your typical wind direction to get LES, but it certainly works for you. I'lll have to warn my daughter of snow in Toronto on her drive back to school in Belleville. :guitar:

Is this reaching as far north as the 407?

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Congratulations guys. Not your typical wind direction to get LES, but it certainly works for you. I'lll have to warn my daughter of snow in Toronto on her drive back to school in Belleville. :guitar:

Is this reaching as far north as the 407?

Thanks Alan. A seasoned LES belter like yourself would scoff at this stuff but for us it's very exciting.

It is, but not for long. Should be gradually shifting south the next hour or so.

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WOW

just WOW i logged on this morning to the env canada canada map, saw the 3 flakes symbol next to ottawa and then nearly choked when i saw the 10 flake icon under toronto!!!!:o

someoen was talking about it in the upstate threead before i went to bed, didnt think much of it....

i was tracking it all last night then felt sleep lol :thumbsup:

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+SN continues. Over 5". This might be the biggest pure LES event I've ever seen.

Usually these pics don't do the snowfall rate justice, but this is pretty close. That's a tree by the way.

post-257-0-84814300-1294496639.jpg

:thumbsup:

Lots of good things happening this morning. Wow to the northern IN LES and about time for the Toronto area.

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Ive had this recurring fear that one of these winters Detroit is bound to get a real stinker after being blessed for so many winters the past decade, but once again it does not appear that this will be a real stinker either, even if it ends up below avg (which I dont think it will, see below). Despite all the pessimisim from some SE MI posters, DTW has seen about 13 inches of snow so far which is really only a few inches below normal (4" below per 71-00 norms). And the backloaded-winter train is boarding and ready to barrel in. I have every confidence that Toronto and Battle Creek (two areas where posters have suffered the most this season, relative to climo) will have an above average season once the flakes cease in 3.5 months, not to mention Detroit, Chicago, etc will be above as well.

you're always keeping it real :thumbsup:

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+SN continues. Over 5". This might be the biggest pure LES event I've ever seen.

Usually these pics don't do the snowfall rate justice, but this is pretty close. That's a tree by the way.

post-257-0-84814300-1294496639.jpg

Holy crap! Late getting on here this morning and just catching up.

Lots of congrats are in order for SSC and the Toronto gang. Looks like you are going to end up with at least a half a foot of unexpected snow. This is gonna cost you some $$$ though. Maybe I should put some cash on the line. :bike:

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WOW

just WOW i logged on this morning to the env canada canada map, saw the 3 flakes symbol next to ottawa and then nearly choked when i saw the 10 flake icon under toronto!!!!:o

someoen was talking about it in the upstate threead before i went to bed, didnt think much of it....

I love that icon, OL. :) Don't see it often enough.

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Is this correct/legit for South Bend, 8" and 6" in one hour? :faints:

And then a relatively tamer 3" in one hour.

METAR KSBN 081054Z 00000KT 1/4SM +SN FZFG BKN001 OVC006 M08/M09 A2951 RMK AO2 TWR VIS 1/4 SLP006 SNINCR 8/19 P0015 T10831094

METAR KSBN 081154Z 28009KT 1/4SM +SN FZFG VV001 M08/M09 A2954 RMK AO2 TWR VIS 1/4 SLP017 SNINCR 6/23 931162 4/023 P0006 60039 70078 T10831094 11078 21083 52027 $

METAR KSBN 081254Z COR 25005KT 1SM -SN BR FEW011 BKN020 OVC027 M08/M10 A2956 RMK AO2 SFC VIS 3 SLP024 SNINCR 3/24 P0006 T10831100 $

thats ridiculous......thats Tug Hill level stuff.

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