Weather Forecasting Contest for Massena, NY (KMSS)

Tomorrow

Forecast at a Glance from the National Weather Service

Labor
Day

Scattered Showers Chance for Measurable Precipitation 40%
Scattered
Showers
Hi 71 °F
Tonight

Chance Showers Chance for Measurable Precipitation 30%
Chance
Showers
Lo 56 °F
Tuesday

Slight Chance Showers Chance for Measurable Precipitation 20%
Slight Chc
Showers
Hi 82 °F
Tuesday
Night

Showers Likely Chance for Measurable Precipitation 60%
Showers
Likely
Lo 59 °F
Wednesday

Showers Likely Chance for Measurable Precipitation 60%
Showers
Likely
Hi 70 °F
Wednesday
Night

Chance Showers Chance for Measurable Precipitation 30%
Chance
Showers
Lo 52 °F
Thursday

Chance Showers Chance for Measurable Precipitation 30%
Chance
Showers
Hi 65 °F
Thursday
Night

Mostly Cloudy
Mostly
Cloudy
Lo 49 °F
Friday

Sunny
Sunny

Hi 67 °F


Go to National Weather Service page
Detailed site information

Weather Forecasts for Tomorrow, Tuesday 7 September 2010

ForecasterTminTmaxPrecipComment
Highest-Rated Forecasters From All Divisions
NWS-MOS-GFS-18-DAY255800.74
NWS-MOS-GFS-00-DAY155810.05
NWS-MOS-GFS-06-DAY154810.05
NWS-MOS-GFS-12-DAY255840.17
NWS-MOS-NAM-12-DAY254800.17
NWS-MOS-NAM-00-DAY153800.37
NWS-MOS-GFS-06-DAY253830
CLIMATOLOGY51720.13From 1971-2000 U.S. Climate Normals

A Sample Forecasting Procedure


Weather forecasters look at many types of data to help them build a forecast, and each forecaster will have their own approach. Here is a simple procedure to get you started.
  1. First look at current weather conditions:

    Surface Analysis

    Visible
    Satellite

    Infrared
    Satellite

    Radar

    A good stating point for formulating your forecast will be determining what is happening around the country today. Where are the major weather systems? Where has it been hot? Where has it been raining? Is any of this weather moving towards my forecasting site over the next forecasting period?
  2. Look at the National Weather Service hourly weather forecast graph and the forecast of fronts and precipitation:

    Graph

    Fronts/Precip
    Remember that the forecast day goes from about midnight to midnight local time. We forecast for a daily High and Low. The Low is typically recorded in the early morning hours of the day, while the high is generally reached in the afternoon. But check the hourly graph for the possibility that the Low and High might come at different times. For example, if a strong cold front comes through early in the day, the High might be in the early morning hours and the temperature might fall for the rest of the day, and the Low would be at the very end of the day.
  3. Look at National Weather Service precipitation forecasts:

    Precip
    The times for these plots are in UTC (or GMT); a contest day goes from 0600 UTC (about midnight in most of the U.S.) to 0600 UTC the next day. Click on the plots corresponding to those hours. Your precip forecast is for the whole day, so you would add the amounts from each 6- or 12-hr plot to calculate what the NWS is predicting for the entire contest day. Remember that you need to predict the amount in inches, and most locations receive amounts over one inch only a few times each year. On most days the precip forecast should be zero, and for many others it will be a few hundredths of an inch (e.g. 0.15 inches).
  4. Check and submit your forecast:
    Once you have determined your high, low, and precipitation amount, check it with the computer model forecasts shown in the table above. Are you close? Generally it’s a good idea to be fairly close to these computer forecasts, because they're typically quite good. Once you've entered your forecast in the form above, click the Submit button.

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Today


Click for Massena, NY (KMSS) Forecast

Weather Forecasts for Today, Monday 6 September 2010

ForecasterTminTmaxPrecipComment
OBSERVED50700Observed data through: 11:53 EDT.
Consensus
MEDIAN46.5730
CONSENSUS-146.972.50.01
Computer
NWS-MOS-NAM-00-DAY049710.03
NWS-MOS-GFS-00-DAY050700
NWS-MOS-GFS-18-DAY146720.05
NWS-MOS-GFS-18-DAY246740
NWS-MOS-GFS-12-DAY145730
NWS-MOS-GFS-00-DAY146730.05
NWS-MOS-GFS-06-DAY145740
NWS-MOS-GFS-12-DAY246720
NWS-MOS-NAM-12-DAY148730
NWS-MOS-NAM-00-DAY147750
NWS-MOS-NAM-12-DAY250740
NWS-MOS-GFS-06-DAY247680
Reference
CLIMATOLOGY51730.13From 1971-2000 U.S. Climate Normals
PERSISTENCE51660

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Yesterday

Weather Forecasts for Saturday 5 September 2010

ForecasterTmin
(score)
Tmax
(score)
Precip
(score)
CommentDay
Score
Division
Points
OBSERVED51660Data FINAL. Scores COMPLETE.
Consensus
MEDIAN48 (3)66 (0)0 (0)3
CONSENSUS-148.6 (2.4)65.6 (0.4)0.01 (2.9)5.8
Computer
NWS-MOS-GFS-00-DAY050 (1)65 (1)0 (0)2
NWS-MOS-NAM-00-DAY050 (1)65 (1)0 (0)2
NWS-MOS-GFS-12-DAY148 (3)66 (0)0 (0)3
NWS-MOS-GFS-00-DAY148 (3)65 (1)0 (0)4
NWS-MOS-GFS-12-DAY248 (3)65 (1)0 (0)4
NWS-MOS-NAM-12-DAY248 (3)67 (1)0 (0)4
NWS-MOS-GFS-06-DAY247 (4)67 (1)0 (0)5
NWS-MOS-GFS-18-DAY149 (2)66 (0)0.03 (4.1)6.1
NWS-MOS-GFS-06-DAY148 (3)66 (0)0.03 (4.1)7.1
NWS-MOS-NAM-00-DAY148 (3)66 (0)0.03 (4.1)7.1
NWS-MOS-GFS-18-DAY249 (2)65 (1)0.07 (5.5)8.5
NWS-MOS-NAM-12-DAY147 (4)67 (1)0.03 (4.1)9.1
Reference
PERSISTENCE56 (5)69 (3)0.09 (5.9)13.9
CLIMATOLOGY51 (0)73 (7)0.13 (6.9)From 1971-2000 U.S. Climate Normals13.9

Daily Weather Map page

Results for Previous Days

Saturday 4 September 2010
Friday 3 September 2010
Thursday 2 September 2010
Wednesday 1 September 2010

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Standings

Leading Weather Forecasters for Week of Sun 29 Aug 2010 - Sat 4 Sep 2010

RankForecaster# ForecastsTmin
Score
Tmax
Score
Precip
Score
Week
Score
Division
Points

Leading Weather Forecasters for September 2010

RankForecaster# ForecastsTmin
Score
Tmax
Score
Precip
Score
Month
Score
Division
Points

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Top Forecasters

Highest-Rated Forecasters, All Divisions

Higher numbers are better, minimum of 5 forecasts
RankForecaster# ForecastsForecaster Rating
1NWS-MOS-GFS-00-DAY025120.3
2NWS-MOS-NAM-00-DAY025119.2
3MEDIAN25118.8
4CONSENSUS-125115.8
5NWS-MOS-GFS-18-DAY125112.3
6NWS-MOS-GFS-12-DAY125111.0
7NWS-MOS-GFS-00-DAY125105.7
8NWS-MOS-GFS-18-DAY225104.9
9NWS-MOS-GFS-06-DAY125104.1
10NWS-MOS-GFS-12-DAY225100.5
11NWS-MOS-NAM-12-DAY22587.0
12NWS-MOS-NAM-12-DAY12585.6
13NWS-MOS-NAM-00-DAY12581.3
14NWS-MOS-GFS-06-DAY22571.4
15PERSISTENCE255.6
16CLIMATOLOGY25-64.3

Legend

This Month's Division Leaders
 M month division wins in last year
 W week division wins in last month
 D day division wins in last week
Elementary School Divisions
Middle School Divisions
High School Divisions
College Divisions
Teacher Division
Open Division
Computer Division
Consensus Division
Reference Division

Weather for Massena, New York (KMSS)

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