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Jan 20th snow event


Thundersnow12

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New short AFD, MKX.

000

FXUS63 KMKX 190302

AFDMKX

AREA FORECAST DISCUSSION

NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI

902 PM CST WED JAN 18 2012

.UPDATE...

WILL FOLLOW TRENDS IN THE HRRR 4 KM RUN THAT TAKES THE BAND OF

SNOW SHOWERS WITH THE COLD FRONT THROUGH MOST OF THE FORECAST

AREA. LATEST 00Z HRR NOW REACHES MADISON AT MIDNIGHT AND MILWAUKEE

BY 3 AM. THIS MAY BE AN HOUR FAST...BUT WE COULD GET A CONVECTIVE

BURST WITH AROUND 1/2 INCH OF ACCUMULATION. WINDS WILL ALSO PICK

UP WITH THE COLD AIR ADVECTION AND INCREASING LOW LEVEL LAPSE RATES.

00Z NAM SHIFTS THE MAX PRECIP AREA JUST A BIT FARTHER

SOUTH...TAKING THE 0.75 LIQUID EQUIVALENT ACROSS LAFAYETTE COUNTY

WITH 0.38 INCHES FOR MILWAUKEE AND MADISON. LOOK LIKE AN ADVISORY

EVENT FOR MUCH OF THE FORECAST AREA. IF THE GFS THAT HAS HAD A

LITTLE LESS QPF THAN THE NAM TRENDS TOWARD THE NAM...A WATCH MAY

BE NEEDED...ESPECIALLY OVER THE FAR SOUTH.

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1.5" per BUFKIT for Friday night. Very narrow DGZ with minimal vvs. LSRs are about 12:1.

It does show moderate lake induced instability but with the usual problems that plague E wind LES. Inversion height at about 3K feet and a ton of wind shear. It would probably be enough to set up some multibands. Maybe add on an additional 1-2" locally.

Really, are you serious?

I guess 2-3" isnt bad at this point, lets hope the models trend a bit wetter and perhaps show more LES entrancement.

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Want to make it a bet? Under 5 you win, over 5 I win for $5? If not, let me know on yahoo.

loser has to change their avatar to the winners choice for 2 weeks?

902 PM CST WED JAN 18 2012

UPDATE

WILL FOLLOW TRENDS IN THE HRRR 4 KM RUN THAT TAKES THE BAND OF

SNOW SHOWERS WITH THE COLD FRONT THROUGH MOST OF THE FORECAST

AREA. LATEST 00Z HRR NOW REACHES MADISON AT MIDNIGHT AND MILWAUKEE

BY 3 AM. THIS MAY BE AN HOUR FAST...BUT WE COULD GET A CONVECTIVE

BURST WITH AROUND 1/2 INCH OF ACCUMULATION. WINDS WILL ALSO PICK

UP WITH THE COLD AIR ADVECTION AND INCREASING LOW LEVEL LAPSE RATES.

00Z NAM SHIFTS THE MAX PRECIP AREA JUST A BIT FARTHER

SOUTH...TAKING THE 0.75 LIQUID EQUIVALENT ACROSS LAFAYETTE COUNTY

WITH 0.38 INCHES FOR MILWAUKEE AND MADISON. LOOK LIKE AN ADVISORY

EVENT FOR MUCH OF THE FORECAST AREA. IF THE GFS THAT HAS HAD A

LITTLE LESS QPF THAN THE NAM TRENDS TOWARD THE NAM...A WATCH MAY

BE NEEDED...ESPECIALLY OVER THE FAR SOUTH.

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loser has to change their avatar to the winners choice for 2 weeks?

902 PM CST WED JAN 18 2012

UPDATE

WILL FOLLOW TRENDS IN THE HRRR 4 KM RUN THAT TAKES THE BAND OF

SNOW SHOWERS WITH THE COLD FRONT THROUGH MOST OF THE FORECAST

AREA. LATEST 00Z HRR NOW REACHES MADISON AT MIDNIGHT AND MILWAUKEE

BY 3 AM. THIS MAY BE AN HOUR FAST...BUT WE COULD GET A CONVECTIVE

BURST WITH AROUND 1/2 INCH OF ACCUMULATION. WINDS WILL ALSO PICK

UP WITH THE COLD AIR ADVECTION AND INCREASING LOW LEVEL LAPSE RATES.

00Z NAM SHIFTS THE MAX PRECIP AREA JUST A BIT FARTHER

SOUTH...TAKING THE 0.75 LIQUID EQUIVALENT ACROSS LAFAYETTE COUNTY

WITH 0.38 INCHES FOR MILWAUKEE AND MADISON. LOOK LIKE AN ADVISORY

EVENT FOR MUCH OF THE FORECAST AREA. IF THE GFS THAT HAS HAD A

LITTLE LESS QPF THAN THE NAM TRENDS TOWARD THE NAM...A WATCH MAY

BE NEEDED...ESPECIALLY OVER THE FAR SOUTH.

Sure, I know you are running short on loot...j/k.

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Really, are you serious?

I guess 2-3" isnt bad at this point, lets hope the models trend a bit wetter and perhaps show more LES entrancement.

The thing with LES, especially shallow stuff like this, is that the models usually don't pick up on it. Check out King City radar right now. Those SHSN blowing into eastern Durham/Northumberland county right now at no time showed up on the NAM. That being said, usually the "bigger" LES events do show up, even on comparatively lo-res models. So the fact that NAM's not picking up on it may be a sign that we probably shouldn't count on more than 1-2" additional.

I'd wait until this gets into the range of the 12km WRF before coming to any conclusions.

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Sure, I know you are running short on loot...j/k.

we can do 5 dollars - I'm sure there will be other chances we disagree ongoing forward for more 5 bets.. get down 20 and its payup time.. or when you lose the 1st 20 you could just hook me up with a mu ticket. no more ot.. i'll get on yahoo in a few..

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The thing with LES, especially shallow stuff like this, is that the models usually don't pick up on it. Check out King City radar right now. Those SHSN blowing into eastern Durham/Northumberland county right now at no time showed up on the NAM. That being said, usually the "bigger" LES events do show up, even on comparatively lo-res models. So the fact that NAM's not picking up on it may be a sign that we probably shouldn't count on more than 1-2" additional.

I'd wait until this gets into the range of the 12km WRF before coming to any conclusions.

I'd rather focus on LES in the short term....perhaps 6-12 hrs within the event. Its best to first see where this storm tracks and the total qpf.

The winds do seem to be out of the SE, ESE predominantly so it'll be interesting to say the least.

21z SREF members look sick.

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