Complete Results @ http://www.newx-forecasts.com/

Follow the link to 'Storm Forecasts – Snow Storm #1 to see the complete station forecast verification table.

 

In the table...

Yellow cells indicate the best score in category. 

Forecast STP is yellow if within +/- 5% of observed STP.

Blue (Red) cells indicate the top (lower) 25% percentile.

 

Final Standings - all Forecasters

 

Forecaster

Class

4casts

Sum Square

STP

TOTAL Absolute

AVG Absolute

 

 

 

 

 

Error

Error Z

%MPROV over AVG

Rank

81.75

Error

Error Z

%MPROV over AVG

Rank

Error

Error Z

%MPROV over AVG

Rank

Error

Error Z

%MPROV over AVG

Rank

RSQ

RSQ Z

%MPROV over AVG

Rank

Forecaster

dryslot

Intern

22

113.0

-0.887

55.5%

1

   87.01

5.26

-0.732

71.2%

4

39.64

-0.550

18.4%

6

1.80

-0.589

19.1%

5

73.6%

1.112

16.5%

4

dryslot

herb@maws

Senior

21

119.4

-0.846

52.9%

2

   67.96

13.79

-0.251

24.4%

7

36.79

-0.725

24.3%

3

1.75

-0.658

21.4%

3

74.6%

1.219

18.1%

2

herb@maws

Brad Yehl

Journeyman

22

129.6

-0.782

48.9%

3

   79.10

2.65

-0.879

85.5%

3

35.75

-0.789

26.5%

2

1.62

-0.834

27.1%

2

74.4%

1.190

17.7%

3

Brad Yehl

Donald Rosenfeld

Senior

22

140.9

-0.711

44.5%

4

   80.76

0.99

-0.972

94.6%

1

33.99

-0.896

30.1%

1

1.55

-0.944

30.7%

1

72.8%

1.020

15.2%

5

Donald Rosenfeld

donsutherland1

Chief

22

168.3

-0.538

33.6%

5

   61.61

20.14

0.107

-10.4%

9

39.04

-0.587

19.7%

5

1.77

-0.627

20.4%

4

65.1%

0.209

3.1%

6

donsutherland1

Mitchel volk

Senior

20

203.2

-0.318

19.9%

6

  101.01

19.26

0.057

-5.5%

8

44.54

-0.249

8.4%

7

2.23

-0.002

0.1%

9

75.5%

1.315

19.6%

1

Mitchel volk

snowman

Senior

23

203.7

-0.315

19.7%

7

   75.75

6.00

-0.690

67.1%

5

48.00

-0.037

1.2%

10

2.09

-0.195

6.3%

7

52.2%

-1.165

-17.3%

12

snowman

Roger Smith

Senior

22

213.4

-0.254

15.9%

8

   80.55

1.20

-0.961

93.4%

2

47.50

-0.068

2.3%

9

2.16

-0.096

3.1%

8

56.2%

-0.741

-11.0%

8

Roger Smith

Shillelagh

Senior

21

223.8

-0.188

11.8%

9

   73.16

8.59

-0.544

52.9%

6

38.79

-0.602

20.2%

4

1.85

-0.527

17.1%

6

61.4%

-0.185

-2.8%

7

Shillelagh

weatherT

Senior

21

246.5

-0.045

2.8%

10

   61.46

20.29

0.115

-11.2%

10

46.99

-0.099

3.3%

8

2.24

0.013

-0.4%

10

50.9%

-1.302

-19.4%

13

weatherT

TQ

Senior

22

408.5

0.975

-61.0%

11

  116.20

34.45

0.913

-88.8%

11

60.85

0.751

-25.2%

11

2.77

0.743

-24.1%

11

56.1%

-0.752

-11.2%

9

TQ

Snowstorm

Rookie

23

441.4

1.182

-74.0%

12

  123.10

41.35

1.302

-126.6%

12

63.75

0.929

-31.1%

12

2.77

0.751

-24.4%

12

53.9%

-0.991

-14.7%

11

Snowstorm

snocat918

Rookie

22

686.6

2.728

-170.6%

13

  145.01

63.26

2.536

-246.6%

13

96.25

2.922

-98.0%

13

4.37

2.966

-96.3%

13

54.4%

-0.930

-13.8%

10

snocat918

Forecast Parameters

283

Error

Error Z

% MPRV

Rank

STP

Error

Error Z

%MPRV

Rank

Error

Error Z

%MPRV

Rank

Error

Error Z

%MPRV

Rank

RSQ

RSQ Z

%MPRV

Rank

Forecast Parameters

MIN

20

113

-0.887

-170.6%

1

61.46

0.99

-0.972

-246.6%

1

34.0

-0.896

-98.0%

1

1.55

-0.944

-96.3%

1

50.9%

-1.302

-19.4%

      1

MIN

MAX

23

687

2.728

55.5%

13

145.01

63.26

2.536

94.6%

13

96.2

2.922

30.1%

13

4.37

2.966

30.7%

13

75.5%

1.315

19.6%

    13

MAX

AVG

22

254

0.000

0.0%

7

88.67

18.25

0.000

0.0%

7

48.6

0.000

0.0%

7

2.23

0.000

0.0%

7

63.2%

0.000

0.0%

      7

AVG

Median

22

204

-0.315

19.7%

7

80.55

13.79

-0.251

24.4%

7

44.5

-0.249

8.4%

7

2.09

-0.195

6.3%

7

61.4%

-0.185

-2.8%

      7

Median

Mode

22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mode

STD

1

159

1.000

62.6%

3.7

24.50

17.75

1.000

97.2%

3.7

16.3

1.000

33.5%

3.7

0.72

1.000

32.5%

3.7

9.4%

1.000

14.9%

   3.7

STD

25%

21

141

-0.711

2.8%

4

73.16

5.26

-0.732

-11.2%

4

38.8

-0.602

1.2%

4

1.77

-0.627

-0.4%

4

54.4%

-0.930

-13.8%

      4

 

75%

22

247

-0.045

44.5%

10

101.01

20.29

0.115

71.2%

10

48.0

-0.037

20.2%

10

2.24

0.013

20.4%

10

73.6%

1.112

16.5%

    10

 

 

SUMSQ:  sum of square errors

STP:  storm total precipitation

TAE:  total absolute error
AAE:  average absolute error

 

Perfect Forecasts

Rank

Forecaster

'Perfect Forecast' Stations

bat avg

1

TQ

ISP JFK PHL BWI

0.182

2

Brad Yehl

PHL

0.045

2

Donald Rosenfeld

BTV

0.045

2

snocat918

ORH

0.045

5

snowman

BWI

0.043

5

Snowstorm

BDR

0.043

7

donsutherland1

 

0.000

7

dryslot

 

0.000

7

herb@maws

 

0.000

7

Mitchel volk

 

0.000

7

Roger Smith

 

0.000

7

Shillelagh

 

0.000

7

weatherT

 

0.000

 

Best Station Forecasts  (Batting Average - Percentage of Forecast Stations with Lowest Absolute Error)

Rank

Forecaster

'Lowest Error' Stations

TOT

bat avg

1

TQ

ISP JFK PHL EWR BWI

5

0.227

2

Snowstorm

BDR BDL EWR DCA

4

0.174

3

Brad Yehl

BOS ABE PHL

3

0.136

4

snowman

CON PVD BWI

3

0.130

5

Shillelagh

BOS ALB

2

0.095

5

weatherT

MDT EWR

2

0.095

7

dryslot

CAR BGM

2

0.091

7

Donald Rosenfeld

BTV IAD

2

0.091

9

Mitchel volk

PWM

1

0.050

10

herb@maws

ALB

1

0.048

11

Roger Smith

BGR

1

0.045

11

snocat918

ORH

1

0.045

13

donsutherland1

 

0

0.000

 

Best Station Forecast Busts (Batting Average - Percentage of Forecast Stations with Highest Absolute Error)

Rank

Forecaster

'Highest Error' Stations

TOT

bat avg

1

snocat918

CAR BDR BDL BGM ABE MDT PHL BWI IAD DCA

10

0.455

2

snowman

BTV HYA ISP JFK ACY EWR

6

0.261

3

Mitchel volk

CON BOS PVD BDR BDL

5

0.250

4

weatherT

PWM ORH BDR BDL

4

0.190

5

Snowstorm

BGR ABE ACY SBY

4

0.174

6

herb@maws

BDR

1

0.048

7

dryslot

RIC

1

0.045

7

TQ

ALB

1

0.045

9

Brad Yehl

 

0

0.000

9

Donald Rosenfeld

 

0

0.000

9

donsutherland1

 

0

0.000

9

Roger Smith

 

0

0.000

9

Shillelagh

 

0

0.000

 

 

Consensus forecast best @ ORH…ALB…MDT

MAX forecast best @ PWM…BDR…

MAX forecast less than observed @ none

MIN forecasts best @ CAR…BGR…BGM.

MIN forecasts more than observed @ CAR…BGR

 

 

Fair association between SUMSQ and TAE Z-scores

 

*******************************

Verification:

Good data from CDUS41…PNS…and F6 bulletins

 

New Daily Records:
THU...27-DEC-12

PWM - 11.6" (8.8"; 1894)

CAR - 6.2" (6.2"; 2010)

 

Rank

Station

 Snow

 SN:H2O

        1

BTV

     15.0

       17.9

        2

PWM

     11.6

         8.6

        3

ALB

      7.8

         8.2

        4

BGR

      7.0

       25.9

        5

CAR

      6.8

       15.1

        6

BGM

      6.3

       11.9

        7

CON

      6.0

         8.0

        7

ORH

      6.0

 

        9

BDL

      5.2

 

      10

BDR

      2.5

 

      11

MDT

      2.2

 

      12

ABE

      1.3

 

      13

IAD

      1.1

 

      13

PVD

      1.1

 

      15

BWI

      1.0

 

      16

EWR

      0.4

 

      17

DCA

      0.2

 

      18

BOS

      0.1

 

      19

ISP

     0.05

 

      19

JFK

     0.05

 

      19

PHL

     0.05

 

 

ACY

        -  

 

 

HYA

        -  

 

 

ORF

        -  

 

 

RDU

        -  

 

 

RIC

        -  

 

 

SBY

        -  

 

 

TOT

     81.8

       13.7