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USA Extremes


Past 24 hours
 
High Temp
85° Harlingen, TX
 
Low Temp
-18° West Yellowstone, MT
 
Precipitation
3.13" Alexandria, LA


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WxSim & NWS Forecast Comparison

National Weather Service (NW), Actual Observed (Act), WxSim Generated (WS)
Morning Forecasts
Updated: 02-04-12 at 8:25 am
Goal Forecast Day Day +1 Day +2 Day +3
± 2.0° F High Low High Low High Low High Low
Date NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
02-04-12 40   40 29   26 41   41 30   26 47   49 31   24 35   30 25   23
02-03-12 42 37.0 44 32 35.2 31 41   43 30   27 40   43 29   25 43   45 28   24
02-02-12 44 45.5 47 29 31.1 28 47 37.0 44 32 35.2 28 41   43 34   27 41   46 31   28
02-01-12 39 48.6 49 32 26.8 28 47 45.5 48 28 31.1 26 46 37.0 47 33 35.2 33 43   42 30   34
01-31-12 58 57.2 53 32 35.4 34 48 48.6 48 30 26.8 30 45 45.5 45 32 31.1 29 45 37.0 46 32 35.2 33
01-30-12 48 52.1 43 36 43.7 37 51 57.2 48 33 35.4 31 43 48.6 46 29 26.8 30 43 45.5 49 30 31.1 28
01-29-12 31 31.6 36 26 18.1 20 48 52.1 45 36 43.7 38 53 57.2 48 35 35.4 35 44 48.6 48 30 26.8 30
01-28-12 32 33.9 37 25 25.7 21 29 31.6 28 20 18.1 20 43 52.1 43 35 43.7 37 47 57.2 49 34 35.4 39
01-27-12 38 46.5 44 26 24.3 29 31 33.9 33 22 25.7 24 28 31.6 29 20 18.1 17 38 52.1 40 32 43.7 36
01-26-12 38 35.9 42 23 30.7 27 40 46.5 43 24 24.3 27 33 33.9 32 20 25.7 24 25 31.6 27 17 18.1 18
01-25-12 35 35.3 37 26 30.4 27 39 35.9 44 25 30.7 22 37 46.5 42 26 24.3 27 33 33.9 39 20 25.7 23
01-24-12 29 38.7 36 16 20.4 19 33 35.3 38 27 30.4 24 39 35.9 43 26 30.7 23 38 46.5 42 26 24.3 28
01-23-12 39 44.3 44 21 25.2 17 28 38.7 33 18 20.4 21 35 35.3 35 26 30.4 31 39 35.9 46 28 30.7 31
01-22-12 38 38.4 44 38 36.2 39 41 44.3 46 19 25.2 22 30 38.7 31 22 20.4 21 36 35.3 37 26 30.4 27
Results NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
# Succ 6 4 3 4 2 3 2 3 3 3 5 5 2 2 4 2
% Succ 46.2   30.8 23.1   30.8 16.7   25 16.7   25 27.3   27.3 45.5   45.5 20   20 40   20
Ave Error 3.8   4 4.2   4 4.5   4 3.6   4 5   5 3.1   3 5.9   6 3.6   3
Std Dev 3.4   3 2.5   2 3.1   3 2.3   3 3.9   4 2.8   2 4.9   5 3.7   3

MidDay Forecasts
Updated: 02-04-12 at 1:25 pm
Goal Forecast Day Day +1 Day +2 Day +3
± 2.0° F High Low High Low High Low High Low
Date NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
02-04-12 40   41 29   25 41   43 30   26 47   50 31   24 35   32 25   22
02-03-12 41 37.0 39 32 35.2 32 41   42 30   28 40   39 29   26 43   47 28   23
02-02-12 43 45.5 46 29 31.1 30 47 37.0 44 32 35.2 31 41   43 34   27 41   46 31   27
02-01-12 40 48.6 48 32 26.8 27 47 45.5 49 28 31.1 27 46 37.0 45 33 35.2 33 43   38 30   29
01-31-12 58 57.2 57 32 35.4 33 48 48.6 48 30 26.8 32 45 45.5 46 32 31.1 28 45 37.0 43 32 35.2 35
01-30-12 49 52.1 49 36 43.7 40 51 57.2 49 33 35.4 32 43 48.6 47 29 26.8 30 43 45.5 48 30 31.1 33
01-29-12 28 31.6 31 26 18.1 20 48 52.1 44 36 43.7 38 53 57.2 49 35 35.4 36 44 48.6 47 30 26.8 30
01-28-12 33 33.9 36 23 25.7 23 29 31.6 29 20 18.1 20 43 52.1 43 35 43.7 37 47 57.2 50 34 35.4 37
01-27-12 39 46.5 46 26 24.3 29 31 33.9 34 22 25.7 25 28 31.6 29 20 18.1 19 38 52.1 41 32 43.7 37
01-26-12 36 35.9 37 23 30.7 30 40 46.5 43 24 24.3 31 33 33.9 36 20 25.7 26 25 31.6 27 17 18.1 18
01-25-12 35 35.3 36 26 30.4 29 39 35.9 40 25 30.7 22 37 46.5 42 26 24.3 26 33 33.9 38 20 25.7 23
01-24-12 34 38.7 39 16 20.4 19 33 35.3 37 27 30.4 22 39 35.9 45 26 30.7 26 38 46.5 44 26 24.3 26
01-23-12 33 44.3 35 21 25.2 22 28 38.7 34 18 20.4 20 35 35.3 36 26 30.4 28 39 35.9 44 28 30.7 25
01-22-12 38 38.4 39 38 36.2 38 41 44.3 45 19 25.2 22 30 38.7 33 22 20.4 21 36 35.3 36 26 30.4 27
Results NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
# Succ 5 10 2 7 2 4 2 3 3 3 5 5 2 2 4 5
% Succ 38.5   76.9 15.4   53.8 16.7   33.3 16.7   25 27.3   27.3 45.5   45.5 20   20 40   50
Ave Error 3.7   2 4.3   2 4.5   4 3.6   4 5   5 3.1   2 5.9   5 3.6   3
Std Dev 3.4   2 2.3   1 3.1   3 2.3   3 3.9   4 2.8   2 4.9   4 3.7   2

Evening Forecasts
Updated: 02-04-12 at 5:25 pm
Goal Forecast Day Day +1 Day +2 Day +3
± 2.0° F Low High Low High Low High Low High
Date NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
02-04-12 30   25 46   41 30   26 50   47 31   24 35   32 25   22 35   30
02-03-12 34 35.2 29 40 37.0 41 29   26 41   40 29   25 49   45 30   22 36   27
02-02-12 29 31.1 26 45 45.5 43 32 35.2 30 41 37.0 44 32   27 41   44 30   26 42   46
02-01-12 33 26.8 28 47 48.6 46 30 31.1 27 46 45.5 44 33 35.2 31 40 37.0 39 30   33 38   37
01-31-12 32 35.4 33 45 57.2 47 31 26.8 31 45 48.6 45 31 31.1 27 44 45.5 44 33 35.2 29 40 37.0 35
01-30-12 38 43.7 40 54 52.1 48 33 35.4 32 43 57.2 47 29 26.8 31 44 48.6 46 31 31.1 29 43 45.5 44
01-29-12 21 18.1 18 48 31.6 44 36 43.7 37 51 52.1 49 34 35.4 36 43 57.2 47 30 26.8 30 42 48.6 45
01-28-12 23 25.7 24 30 33.9 29 22 18.1 18 44 31.6 42 34 43.7 37 46 52.1 51 35 35.4 38 44 57.2 50
01-27-12 25 24.3 28 33 46.5 34 26 25.7 25 29 33.9 30 19 18.1 19 42 31.6 41 34 43.7 38 47 52.1 49
01-26-12 27 30.7 28 38 35.9 43 25 24.3 27 32 46.5 30 22 25.7 21 28 33.9 29 18 18.1 20 37 31.6 45
01-25-12 27 30.4 27 38 35.3 40 24 30.7 24 39 35.9 40 24 24.3 25 33 46.5 38 20 25.7 22 23 33.9 23
01-24-12 17 20.4 17 34 38.7 36 27 30.4 21 38 35.3 44 24 30.7 21 37 35.9 42 26 24.3 25 31 46.5 38
01-23-12 24 25.2 19 28 44.3 36 16 20.4 19 33 38.7 40 26 30.4 29 39 35.3 49 26 30.7 25 39 35.9 40
01-22-12 34 36.2 34 39 38.4 46 22 25.2 20 28 44.3 35 21 20.4 22 35 38.7 36 26 30.4 28 40 35.3 44
Results NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
# Succ 3 3 4 0 3 3 2 2 5 5 2 3 4 2 0 2
% Succ 23.1   23.1 30.8   0 25   25 16.7   16.7 45.5   45.5 18.2   27.3 40   20     20
Ave Error 3   3 6.1   6 3.4   4 6.9   7 2.9   4 6.2   6 3.2   3 7   6
Std Dev 1.8   2 5.9   4 2.5   3 5.5   5 2.9   3 5.1   4 3.3   3 5.3   5

Night Forecasts
Updated: 02-04-12 at 10:25 pm
Goal Forecast Day Day +1 Day +2 Day +3
± 2.0° F Low High Low High Low High Low High
Date NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
02-04-12 30   24 46   41 30   25 50   47 31   24 35   32 25   22 35   30
02-03-12 34 27.6 32 40 37.0 43 29   27 41   41 29   25 49   46 30   22 36   27
02-02-12 29 36.0 29 45 45.5 44 32 27.6 30 41 37.0 44 32   27 41   44 30   26 42   46
02-01-12 30 33.3 26 47 48.6 46 30 36.0 26 46 45.5 44 33 27.6 30 40 37.0 38 30   32 38   36
01-31-12 32 30.1 34 45 57.2 48 31 33.3 31 45 48.6 46 31 36.0 27 44 45.5 44 33 27.6 29 40 37.0 35
01-30-12 39 46.9 40 54 52.1 48 33 30.1 32 43 57.2 47 29 33.3 31 44 48.6 46 31 36.0 29 43 45.5 44
01-29-12 23 45.0 18 48 31.6 44 36 46.9 38 51 52.1 49 34 30.1 36 43 57.2 47 30 33.3 30 42 48.6 45
01-28-12 23 20.0 26 30 33.9 30 23 45.0 18 45 31.6 42 35 46.9 37 51 52.1 50 37 30.1 38 44 57.2 50
01-27-12 25 28.3 28 33 46.5 34 26 20.0 24 29 33.9 31 19 45.0 22 42 31.6 42 34 46.9 37 47 52.1 51
01-26-12 27 33.3 28 38 35.9 43 25 28.3 27 32 46.5 30 22 20.0 22 28 33.9 28 18 45.0 19 37 31.6 44
01-25-12 27 33.7 31 38 35.3 38 24 33.3 26 39 35.9 42 24 28.3 26 33 46.5 41 20 20.0 23 23 33.9 26
01-24-12 20 30.4 19 34 38.7 37 27 33.7 26 38 35.3 45 24 33.3 21 37 35.9 38 26 28.3 25 31 46.5 36
01-23-12 24 24.7 19 28 44.3 35 16 30.4 18 33 38.7 40 26 33.7 29 39 35.3 49 26 33.3 24 39 35.9 39
01-22-12 39 28.8 37 39 38.4 45 22 24.7 22 28 44.3 35 21 30.4 22 35 38.7 36 26 33.7 28 40 35.3 44
Results NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS NW Act WS
# Succ 2 1 4 2 0 2 2 2 1 1 3 2 1 1 0 3
% Succ 15.4   7.7 30.8   15.4     16.7 16.7   16.7 9.1   9.1 27.3   18.2 10   10     30
Ave Error 6.9   7 6.1   6 7.6   7 7   7 8.1   7 5.7   5 7.8   8 7   6
Std Dev 5.5   7 5.9   4 5.9   7 5.6   5 7.6   7 5.2   4 8.2   8 5.3   5