CONTEST STATUS - Last update: FRI ... 14-JUL-17 @ 8:30 PM EDT

Winter '17 / '18 - Snowfall Forecast Contests
19th Annual 'Regular Season'
Season starts when the first flakes start a'flyin'

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17th Annual 'Season-total'
Entries accepted between 01-NOV-17 and 30-NOV-17
Verification period: 01-DEC-17 through 31-MAR-18

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Winter '16 / '17 - Snowfall Forecast Contests
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18th Annual 'Regular Season'
FINAL results here
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16th Annual 'Season-total'
FINAL results here

Tuesday, February 18, 2014

Winter '13 / '14 - 13th Annual 'Season-Total' Forecast Contest: JAN Totals

JAN/s snowfall totals picked up where DEC left off with 17 stations measuring above normal snowfall and 139% of normal for the entire forecast area where northern mid-Atlantic stations continued to get the best of it.  Total departure was +100.4" above normal.


GREEN - 75th percentile and above
RED - 25th percentile and below

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JAN totals for SBY and ORF are 11.5".
Could be a data entry error in the monthly CXUS51 Climate Report bulletins.

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Stations already above their normal season totals with two months left to go:

PHL - 176%
ORF - 139%
ACY - 132%
EWR - 109%
SBY - 108%
NYC - 103%

Winter '13 / '14 - 13th Annual 'Season-Total' Forecast Contest: DEC Totals

DEC/s snowfall totals got the season off to a promising start with 16 stations measuring above normal snowfall and 145% of normal for the entire forecast area where northern mid-Atlantic and Maine stations got the best of it.  Total departure was +94.3" above normal.


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GREEN - 75th percentile and above
RED - 25th percentile and below

Saturday, February 15, 2014

Winter '13 / '14 - Storm #5: Final Results



SUMSQ: sum of square errors
STP: storm-total precipitation error
TAE: total absolute error
AAE: average absolute error
(number): category rank

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Full forecast verification and summary for Storm #5 at the Contest/s web site here.
 photo valentine_snow_75_zps7fba1f12.gif
Valentine's Day 2014

Winter '13 / '14 - Storm #5: Preliminary Verification


Preliminary storm-total snowfalls for WED through FRI from CDUS41...CXUS51...and PNS bulletins.

Good coverage and reporting.
Every forecast station observed snow.

Daily snowfall for SBY MIA from all bulletins, per usual.  METARs carried -SN for about four hours  with visibility no lower than 1 3/4SM.  P/0000 group during the period summed to 0.02" which earned this station an estimated 0.2" snowfall using a generous 10:1 SLR.

Many stations' SLR contaminated by mixed precipitation.

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Seven new daily records:
THU...13-FEB-14
ABE - 17.8" (3.4"; 1993)
IAD - 11.7" (3"; 1992)
ORH - 10.5" (9"; 1897)
BDR - 9.5" (4.2"; 1950)
EWR - 9.4" (3.3"; 1950)
ISP - 8.1" (0.7"; 2008)
JFK - 5.5" (3"; 1950)

00z 14-FEB-14
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Please report any errors in Comments along with a link to the correct data.

Will try to have the Final results posted SAT evening before 10 PM EST.

Wednesday, February 12, 2014

Winter '13 / '14 - Storm #5: The Forecasts

Rookie 0
Intern 1
Journeyman 1
Senior 10
TOT 12

One entry received extra late is listed in the summary but will not be scored officially.

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319 station forecasts.

Forecasts are ranked by their storm-total precipitation (STP).
BLUE ==> 25th percentile.
RED ==> 75th percentile.
STP cells without color are between the 25th and 75th percentile.


Heavy snowfall (+6") consensus for a mid-Atlantic and NE event with the lollypop expected at BGR.


Historic storm affecting the Gulf coast states and the entire eastern seaboard and none of the 'key' teleconnections bother to show up.

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Everyone/s station-by-station forecast at the Contest/s web site.

Tuesday, February 11, 2014

Monday, February 10, 2014

Winter '13 / '14 - Storm #5: Call for Forecasts!

NYC - Bronx
Mosholu Parkway
FEB-61
Two waves in today/s forecast.

First one is Storm #5.
It's forecast to lift NE into eastern Canada late Friday.

Second wave progged to enter western PA during the day Friday and may turn out to be a contest-worthy storm.  If so, the 'Call for Forecasts' for Storm #6 would be issued WED evening...12-WED-14 with the deadline for entries at 10:30 PM EST THU...13-FEB-14.  The verification period would begin over western portions of the forecast area at 12:01 AM EST FRI...14-FEB-14.

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Forecast element: storm-total snowfall for the 1st wave

Deadline for entries:  10:30 PM EST...TUE...11-FEB-14
Verification begins:  12:01 AM EST WED...12-FEB-14
Verification ends:  11:59 PM EST FRI...14-FEB-14

Enter your forecast at the Contest's home page here.
Follow the link from 'Enter Storm Forecast.'

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As always...there/s no cost...or fee...or advertising...or annoying requests for personal information to enter a forecast. It's just a fun exercise for winter wx enthusiasts to see who can make the best synoptic-scale snowfall forecast.

If you are issuing your first forecast this winter...or you entered the 'season-total' forecast contest...you/ll need to create an account (user name / password / valid e-mail...if you want a copy of your forecast sent to your Inbox).

Saturday, February 8, 2014

Winter '13 / '14 - Storm #4: FINAL Results


SUMSQ: sum of square errors
STP: storm-total precipitation error
TAE: total absolute error
AAE: average absolute error
(number): category rank

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Full forecast verification and summary for Storm #4 here.

Winter '13 / '14 - Storm #4: Preliminary Verification

Preliminary storm-total snowfalls for WED and THU from CDUS41...CXUS51...and PNS bulletins.

Good coverage and reporting.

BDL SLR contaminated by FZRA

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Two new daily records:
WED...05-FEB-14
BOS - 13.2" (3"; 1976)
BTV - 9.3" (7.9"; 1968)

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Please report any errors in Comments along with a link to the correct data.

Final results SAT evening before 9 PM EST


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Wednesday, February 5, 2014

Winter '13 / '14 - Storm #4: The Forecasts

Rookies  1
Journeyman  1
Senior  11
TOT 13

266 station forecasts


Forecasts are ranked by their storm-total precipitation (STP).
BLUE ==> 25th percentile.
RED ==> 75th percentile.
STP cells without color are between the 25th and 75th percentile


Heavy snowfall (+6") consensus for an interior NE event with lollypops expected at CON and ALB.


Teleconnections upside down.

Everyone/s station-by-station forecast at the Contest/s web site.

Monday, February 3, 2014

Winter '13 / '14 - Storm #4: Call for Forecasts

LGA
10-FEB-1969
Forecast element: storm-total snowfall
Deadline for entries:  10:30 PM EST TUE...04-FEB-14
Verification begins:  12:01 AM EST WED...05-FEB-14
Verification ends:  when the snow stops falling

Enter your forecast at the Contest's home page here.

Follow the link from 'Enter Storm Forecast.'

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As always...there/s no cost...or fee...or advertising...or annoying requests for personal information to enter a forecast. It's just a fun exercise for winter wx enthusiasts to see who can make the best synoptic-scale snowfall forecast.

If you are issuing your first forecast this winter...or you entered the 'season-total' forecast contest...you/ll need to create an account (user name / password / valid e-mail...if you want a copy of your forecast sent to your Inbox).

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Want to be notified via e-mail when the 'Call for Forecast' is issued?
Send requests to 'newx at newx-forecasts dot com'.

Sunday, February 2, 2014

Winter '13 / '14 - Coastal Teaser #4

Promising contest-worthy event mid-week for northern forecast stations.


If progs continue their current trends...
A 'Call for Forecasts' would be issued MON...03-FEB-14.
Deadline for entries:  10:30 PM EST TUE...04-FEB-14