Monday, December 31, 2007

Contest # 4 - The Forecasts

Maximum...average...median...and minimum station forecasts

Seven veteran forecasters. No rookies who must all be out partying tonight.

MAX STP: jackzig 61.25"
MIN STP: TQ 42.45"
AVG STP: 53.50"

Another northern New England event where the consensus heavy snowfall axis is expected from CAR - BGR - PWM - CON - BTV - CAR.

All forecasts have been posted to the NEWxSFC web site. Follow the link from Storm Contest Forecasts 'Contest # 4'. Forecasts are ranked from minimum to maximum STP.

Contest # 3 - Teleconnections

Heavy snows fell across northern portions of the forecast area...yet so-called 'critical heavy snowfall' teleconnection indices are all on the wrong side of zero for this event.

Not surprising. It/s another meteorological myth that can/t stand the light of data.

Sunday, December 30, 2007

Contest # 3 - The Forecasts

Maximum...average...median...and minimum station forecasts

Forecasts have been posted to the Contest web site. Follow the link to Contest #3.

Minimum STP: GSB Snowman 43.15"
Maximum STP: wxduff 72.05"
AVG STP: 59.61"

Consensus heavy snow axis from BGR - PWM - CON - ORH - ALB - BGR.

Contest # 4 - Call for Forecasts


Northern stream short-wave progged to spread contest-worthy snows across the forecast area as it migrates east from the Great Lakes and excites cyclogenesis in the waters off SNE coast on New Year/s Day.

Deadline: 10:30 PM EST Monday...31 December 2007
Forecast verification begins: 12:01 AM EST Tuesday...01 January 2008

Enter your forecast via the Contest/s web site
Follow the link to 'Enter Storm Forecast.'

Please enter 0.05 for trace amounts instead of a 'T.'

All forecasts will be posted by the Contest Administrator to the NE_Wx Google Group before 11 PM EST Monday...31 December 2007 and to the Contest web site by Tuesday afternoon.

Contest subject to cancellation before the deadline…if forecast conditions warrant.

More information about the contest/s rules…forecast verification…and scoring can be found @ the web site.

<.boiler plate>
Forecasters need to register once before entering…even if they were registered last year.

Registration is simple…requiring only a user name and password. If you provide a valid e-mail address…a copy of your forecast will be sent to you. Please ensure your browser is enabled to accept first-party cookies.

Each contest must have a minimum of seven (7) forecasters for the results to be included in the end-of-season standings.

The NE.Wx Snowfall Forecast Contest (NEWxSFC) is a multi-month event that continues into late March or early April. In general…contests are held whenever a decent…synoptic-scale storm rears its head and threatens at least a half-dozen forecast stations with more than nuisance snowfall amounts. Forecasters are called to post their 'storm total' snowfall predictions…on deadline…for 27 NWS / FAA observing stations scattered about New England and the Mid-Atlantic regions. The Contest Administrator determines the deadlines for entries…verifies all forecasts…and publishes the final results to the Contest/s web site.

Please be sure to read the rules before entering the contest b/c your entry constitutes agreement to abide by them.

You can find the Contest Rules and additional information about error scoring…current monthly snowfall climatology from NCDC…daily CPC teleconnection indices…daily NESDIS NHEMI snow cover…and NWS Daily Climate Bulletins (CDUS41) by pointing your browser here.

<./ boiler plate >

Happy New Year - Contest # 4?


Sunday/s 12z progs suggest another contest-worthy event on New Year/s Day with cyclogenesis occurring in the Gulf of ME followed by an arctic outbreak.

Thermal profiles appear colder for this system..and like Storm # 3...it taps into hi-PW parcels from low latitudes.

Saturday, December 29, 2007

Contest # 3 - Call for Forecasts


Fairly decent snows on the northern edge of the precipitation shield are expected to attend a deepening wave passing over the 40°N / 70°W ‘benchmark’ late Sunday into New Year/s Eve.

Deadline: 8:00 PM EST Sunday, 30 December 2007
Forecast verification begins: 8:00 PM EST Sunday, 30 December 2007

Enter your forecast via the Contest/s web site
Follow the link to 'Enter Storm Forecast.'

Please enter 0.05 for trace amounts instead of a 'T.'

All forecasts will be posted by the Contest Administrator to the NE_Wx Google Group before 11 PM EST Sunday, 30 December 2007 and to the Contest web site by Monday afternoon.

Contest subject to cancellation before the deadline…if forecast conditions warrant.

More information about the contest/s rules…forecast verification…and scoring can be found at the main web site.

Updates and announcement are posted on the Contest/s web log @ http://newxsfc.blogspot.com


<.boiler plate>
Forecasters need to register once before entering…even if they were registered last year.

Registration is simple… requiring only a user name and password. If you provide a valid e-mail address…a copy of your forecast will be sent to you. Please ensure your browser is enabled to accept first-party cookies.

Each contest must have a minimum of seven (7) forecasters for the results to be included in the end-of-season standings.

The NE.Wx Snowfall Forecast Contest (NEWxSFC) is a multi-month event that continues into late March or early April. In general…contests are held whenever a decent…synoptic-scale storm rears its head and threatens at least a half-dozen forecast stations with more than nuisance snowfall amounts. Forecasters are called to post their 'storm total' snowfall predictions…on deadline…for 27 NWS / FAA observing stations scattered about New England and the Mid-Atlantic regions. The Contest Administrator determines the deadlines for entries…verifies all forecasts…and publishes the final results to the Contest/s web site.

Please be sure to read the rules before entering the contest b/c your entry constitutes agreement to abide by them.

You can find the Contest Rules and additional information about error scoring…current monthly snowfall climatology from NCDC…daily CPC teleconnection indices…daily NESDIS N-Hemi snow cover…and NWS Daily Climate Bulletins (CDUS41) by pointing your browser here.
<./boiler plate>

Contest # 3 - Definite Maybe


12z NAM depicts a narrow band of 'hard to get excited about' nuisance snows on the nrn edge of a rain dominated precip shield. OTOH...GooFuS is back in the decent contest storm category after venturing off the reservation last night.

Final decision pending tonight/s 00z runs.

Friday, December 28, 2007

Contest # 3 - Unfriendly Trend


Friday/s 12z GooFuS solns for a 'contest-worthy' event come Monday were a darn sight better than tonight/s 'low and away' look. Latest GFS short-term output is now much more in line with the earlier 'contest-hostile' solns from NAM.

Given the unfriendly trend...Contest # 3 awaits another day.

For that matter...next two weeks don/t look all that promising either.

Thursday, December 27, 2007

Happy New Year - One Step Closer

Today/s EC D+5 takes a big step closer toward a significant winter wx event for Northeast CONUS come New Year/s Day.

Note the depiction of greater amplitude to the wrn ridge and how the sfc LOW/s re-development off the mid-Atlantic coast is better defined than yesterday/s D+6 prog.

Whether it all gets there is still up on the air...but without a doubt...we be moving in the right direction.

Wednesday, December 26, 2007

Happy New Year


Today/s European model D+6 has real potential...despite the evolution and present placement of its major features.

The SE heat ridge has shifted its position once this winter...when it retrogressed about two weeks ago and widespread snows were observed in the NE. This time...a progressive planetary wave regime shoves the heat ridge well offshore by D+10 into the south-central ATL.

Is that soln reasonable given the how persistent the heat ridge has been to date...or might today/s soln be a tad too progressive? The implications for EC wx are significant if the soln truely is too progressive.

Also consider what/s progged to happen in the ern PAC where the model depicts deep layer WAA. Ordinarily...this would be expected to pump up or amplify the downstream S/W ridge.

In the event the SE heat ridge is not so progressive...and the wrn ridge b/comes more amplified by WAA...the wave length across CONUS would be shorter and the amplitude greater than presently progged.

Such an alternative scenario keeps the L/W trof closer to the EC where cyclogenesis would likely occur @ a latitude low enuf and a significant snowstorm is in play for much of the I-95 corridor.