Weather Forecasting Contest for Casper, WY (KCPR)

Tomorrow

Forecast at a Glance from the National Weather Service

This
Afternoon

Windy
Windy

Hi 83 °F
Tonight

Isolated Thunderstorms Chance for Measurable Precipitation 20%
Isolated
Tstms
Lo 46 °F
Wednesday

Chance Showers Chance for Measurable Precipitation 40%
Chance
Showers
Hi 64 °F
Wednesday
Night

Slight Chance Showers Chance for Measurable Precipitation 20%
Slight Chc
Showers
Lo 37 °F
Thursday

Chance Showers Chance for Measurable Precipitation 30%
Chance
Showers
Hi 58 °F
Thursday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%
Slight Chc
Tstms
Lo 36 °F
Friday

Chance Rain Chance for Measurable Precipitation 40%
Chance
Rain
Hi 60 °F
Friday
Night

Chance Showers Chance for Measurable Precipitation 40%
Chance
Showers
Lo 44 °F
Saturday

Chance Showers Chance for Measurable Precipitation 30%
Chance
Showers
Hi 68 °F

Go to National Weather Service page
Detailed site information

Weather Forecasts for Wednesday 23 May 2012

Forecaster Tmin(F) Tmax(F) Precip(in) Comment
NWS-MOS-NAM-12-DAY1 38 67 0
NWS-MOS-GFS-12-DAY1 44 63 0
NWS-MOS-NAM-00-DAY1 39 65 0.03
NWS-MOS-GFS-00-DAY1 46 64 0.16
NWS-MOS-GFS-06-DAY1 45 65 0.05
NWS-MOS-GFS-18-DAY2 45 62 0.10
NWS-MOS-NAM-12-DAY2 40 65 0.03
NWS-MOS-GFS-12-DAY2 45 65 0.10
NWS-MOS-GFS-06-DAY2 45 59 0.28
CLIMATOLOGY 40 69 0.08 From 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 Casper, WY (KCPR) Forecast

Weather Forecasts for Tuesday 22 May 2012

ForecasterTminTmaxPrecipComment
OBSERVED52830Observed data through: 12:53 MDT.
Consensus
CONSENSUS-151.284.10
MEDIAN52840
Computer
NWS-MOS-NAM-12-DAY150850
NWS-MOS-GFS-18-DAY150840
NWS-MOS-GFS-12-DAY150840
NWS-MOS-NAM-00-DAY152830
NWS-MOS-GFS-00-DAY152840
NWS-MOS-GFS-00-DAY054850
NWS-MOS-GFS-06-DAY152850
NWS-MOS-GFS-18-DAY252840
NWS-MOS-NAM-12-DAY248830
NWS-MOS-GFS-12-DAY253830
NWS-MOS-NAM-00-DAY053850
NWS-MOS-GFS-06-DAY251800
Reference
CLIMATOLOGY40690.08From 1971-2000 U.S. Climate Normals
PERSISTENCE42830

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 21 May 2012

ForecasterTmin
(score)
Tmax
(score)
Precip
(score)
CommentDay
Score
Division
Points
OBSERVED42830Data FINAL. Scores COMPLETE.
Consensus
MEDIAN45 (3)84 (1)0 (0)4
CONSENSUS-145.2 (3.2)84.4 (1.4)0 (0)4.6
Computer
NWS-MOS-GFS-12-DAY244 (2)83 (0)0 (0)2
NWS-MOS-NAM-00-DAY143 (1)85 (2)0 (0)3
NWS-MOS-GFS-06-DAY244 (2)84 (1)0 (0)3
NWS-MOS-NAM-12-DAY145 (3)84 (1)0 (0)4
NWS-MOS-GFS-18-DAY145 (3)84 (1)0 (0)4
NWS-MOS-GFS-18-DAY245 (3)84 (1)0 (0)4
NWS-MOS-NAM-12-DAY244 (2)85 (2)0 (0)4
NWS-MOS-GFS-12-DAY145 (3)85 (2)0 (0)5
NWS-MOS-GFS-00-DAY146 (4)84 (1)0 (0)5
NWS-MOS-GFS-06-DAY146 (4)85 (2)0 (0)6
NWS-MOS-GFS-00-DAY048 (6)84 (1)0 (0)7
NWS-MOS-NAM-00-DAY049 (7)84 (1)0 (0)8
Reference
PERSISTENCE38 (4)75 (8)0 (0)12
CLIMATOLOGY39 (3)68 (15)0.08 (5.6)From 1971-2000 U.S. Climate Normals23.6

Daily Weather Map page

Results for Previous Days

Sunday 20 May 2012
Saturday 19 May 2012
Friday 18 May 2012
Thursday 17 May 2012

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 13 May 2012 - Sat 19 May 2012

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

Leading Weather Forecasters for May 2012

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
1PERSISTENCE25-8.8
2CLIMATOLOGY25-80.8

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 Casper, Wyoming (KCPR)

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