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Excessive Rainfall in the Southern Plains; Extreme Heat Coming to the Southwest U.S.

Heavy to severe thunderstorms may bring areas of excessive rainfall and flooding over parts of the southern Plains through Friday. A Slight Risk of excessive rainfall has been issued. Dangerously hot temperatures are forecast across parts of southern Arizona and far southeastern California Saturday through Monday. An Extreme Heat Watch has been issued. Read More >

Western and Central Wyoming

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2012-13 Wyoming Water Year Summary

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Climate Summaries

2012-13 Water Year Precipitation and Percent of Normal
Station Name Drought
Conditions		 Oct
2012		 Nov
2012		 Dec
2012		   Jan
2013		 Feb
2013		 Mar
2013		 Apr
2013		 May
2013		 Jun
2013		 Jul
2013		 Aug
2013		 Sep
2013		   Total for
Water Year
to Date
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Big Piney  D0  0.24 0.15 0.04   0.07 0.09 0.03 0.25 1.26 T 0.89 0.41 0.83   4.26
1981-2010 Normals  0.53  0.21  0.30    0.31  0.35  0.44  0.53  0.84 0.79  0.71  0.69  0.78   6.48
Percent of Normal  45 71  13   23 26 7  47 150 0  125  59  106   66
                               
Buffalo None  0.77 0.75 0.08   0.48 0.13 0.08 0.83 1.61 0.95 0.11 0.23  3.34   9.36
1981-2010 Normals  0.93  0.54  0.40    0.42  0.35  0.92  1.30  2.53  2.28  1.66  0.81  1.31   13.45
  Percent of Normal  83  139 20   114 37 9  64  64  42  7 28  255   70
                               
Casper   D0 0.56 0.49 0.39   0.27 0.50 0.85 2.54 1.81 0.87 1.66 0.70  1.47   12.11
1981-2010 Normals  1.11 0.76  0.49    0.51  0.57  0.82  1.29  2.02  1.61  1.41  0.85  1.08   12.52
  Percent of Normal  50 64 80   53 88 104  197 90 54  118  82  136   97
Snowfall  5.2 7.5 6.0   4.5 9.5 10.5  39.0  3.5  0.0  0.0  0.0  4.8   90.5
1981-2010 Normals 7.4  10.3 11.0   9.1 9.8 10.9 11.6 2.9 0.1 0.0 0.0 1.8   74.9
  Percent of Normal  70 73 55   49 97 96  336  121  0  0  0  267   121
                               
Evanston   D1 1.59 0.52 0.12   0.11 0.36 0.41 0.92 0.21 T 0.20 0.16  1.48   6.08
  1981-2010 Normals 1.17 1.04 0.58   0.54 0.61 0.86 1.15 1.77 1.24 0.61 0.96 1.31   11.84
  Percent of Normal  136  50 21   20  59  48 80  12 0  33  17  113   51
                               
Greybull   D1 0.06 0.21 0.13   0.28 0.14 0.09 0.38 1.01 0.40 0.32 T  1.11   4.13
  1981-2010 Normals  0.60  0.30  0.28    0.23  0.18  0.40  0.71  1.65  1.20  0.66  0.42  0.88   7.51
  Percent of Normal  10 70 46   122  78 23 54  61  33  48 0  126   55
                               
Lander  None 0.68 0.49 0.40   0.70 1.28 0.42 3.14 1.98 0.05 0.28 0.01  3.78   13.21
  1981-2010 Normals  1.29  0.86  0.58    0.41  0.58  1.16  1.87  2.20  1.27  0.78 0.61  1.05   12.66
  Percent of Normal  53 57 69   171 221  36 168  90 4  36 2  360   104
Snowfall  5.6 4.8 5.3   12.7 23.8 5.1  43.3  10.5 0.0  0.0  0.0  4.1   115.2
1981-2010 Normals 9.8  13.1 10.1   7.6 10.3 16.1 16.8 4.8 0.1 0.0 0.0 2.7   91.4
  Percent of Normal  57 37 52   167 231 32  258  219 0  0  0  152   126
                               
Riverton  None 0.34 0.32 0.41   0.11 0.54 0.11 1.30 1.38 0.05 0.54 0.03  3.01   8.14
  1981-2010 Normals  0.89  0.50  0.32    0.24  0.27  0.55  1.30  1.72  1.28  0.89  0.57  0.90   9.43
  Percent of Normal  38 64 128   46 200 20  100  80 4 61  5  334   86
Snowfall  1.1 1.4 4.8   2.7 8.8 1.1  15.9  2.4 0.0 0.0  0.0 7.3   45.5
                               
Rock Springs  D0 0.07 0.17 0.20   0.05 0.32 0.19 0.37 0.56 T  0.21 0.50  1.37   4.01
 1981-2010 Normals  0.87  0.49  0.50    0.45  0.48  0.68  0.91  1.21  0.79  0.64  0.62  0.92   8.56
  Percent of Normal  8 35 40   11 67 28 41 46 0 33  81  149   47
                               
Sheridan   None  0.95  1.09 0.50    0.96 0.79 0.27 2.27 3.03 2.19 0.43 0.05  4.26   16.79
  1981-2010 Normals  1.41  0.71  0.56    0.56  0.54  0.98  1.60  2.35 2.12  1.18  0.72  1.43   14.16
  Percent of Normal  67 154 89   171 146 28  142  129 103 36  7 298   119
                               
Worland  D0 0.26 0.60 0.26   0.13 0.26 0.20 0.98 1.12 0.09 0.30 0.13  2.63   6.96
  1981-2010 Normals 0.69 0.35 0.23    0.23 0.19 0.46 0.86 1.42 1.15 0.71 0.43 0.85   7.57
  Percent of Normal  38 171 113    57 137 43  114  79 8  42  30  309   92
                               
Station Name Drought
Conditions		 Oct
2012		 Nov
2012		 Dec
2012		   Jan
2013		 Feb
2013		 Mar
2013		 Apr
2013		 May
2013		 Jun
2013		 Jul
2013		 Aug
2013		 Sep
2013		   Total for
Water Year
to Date
 click on location   D0 D1                              
 for graph D2 D3 D4                              
Afton   D1 1.50 1.40 2.13   0.84 0.68 1.30 2.00 2.43 0.10 1.53 0.40  2.81   17.12
  1981-2010 Normals 1.63 2.04 1.25   1.40 1.09 1.40 1.54 2.26 1.97 1.43 1.25 1.46   18.16
  Percent of Normal  92 95 170   60 62  93 130  108 5 107  32  192   94
Snowfall  7.0 12.8 31.1   16.8 15.3 13.7  7.0  1.0 0.0 0.0  0.0  0.3   105.0
                               
Bitter Creek 4NE  D0 0.38 0.34 0.18   0.30 0.59 0.22 0.50 0.63 0.02 0.15 0.28 1.29   4.88
  1981-2010 Normals 0.66 0.31 0.51   0.28 0.36 0.30 0.65 1.09 0.70 0.60 0.75 0.73   6.94
  Percent of Normal  58 110 35   107  164  73 77  58  3 25  37 177   70
                               
Cody  D0 0.34 0.52 0.59   0.30 0.19 0.31 0.95 3.22 0.35 0.76 0.38  2.54   10.45
  1981-2010 Normals 0.89 0.48 0.33   0.33 0.33 0.56 1.06 1.82 1.68 1.11 0.91 1.06   10.56
  Percent of Normal  38 108 179   91 58 55 90 177  21 68  42 240   99
Snowfall 0.0 3.0 6.0   4.0 3.0 1.0 7.2 0.0 0.0 0.0  0.0 0.0   24.2
1981-2010 Normals 4.3 6.3 8.0   7.8 6.7 6.9 6.3 0.8 0.0 0.0 0.0 0.2   47.3
  Percent of Normal  0 48 75   51 45 14  114 0 0  0  0 0   51
                               
Dubois  None 1.53 0.48 0.31   0.35 0.33 0.46 0.60 1.57 0.05 1.22 0.60  3.17   10.67
  1981-2010 Normals 0.81 0.57 0.28   0.24 0.38 0.40 1.10 1.64 1.28 1.11 0.86 1.24   9.91
  Percent of Normal  189 84 111   146  87 115 55 96  4  110  70 256   108
Snowfall 5.3 5.0 5.5   7.0 7.3 6.5 10.0 0.5 0.0 0.0  0.0  3.5   50.6
1981-2010 Normals 3.0 5.8 5.1   3.9 5.7 6.0 8.5 3.9 0.6 0.0 0.0 2.6   45.1
  Percent of Normal  177 86 108   179 128 108  118 13 0  0  0  135   112
                               
Fossil Butte
National Monument		   D1 1.62 0.81 1.69   0.19 0.66 0.39 0.64 1.33  0.06 0.49 0.71 2.77   11.36
1981-2010 Normals 1.11 0.86 0.74   0.49 0.68 0.82 0.98 1.41 1.03 0.85 0.93 1.10   11.00
  Percent of Normal  146 94 228   39  97 48  65  94 6 58  76  252   103
Snowfall 10.0 6.5 18.6   6.1 12.4  6.8 9.9 T 0.0  0.0  0.0  T   70.3
                               
Green River  D0 1.00 1.05 0.97   0.10 0.55 0.45 0.75 1.41 0.05 0.05 0.55 2.09   9.02
  1981-2010 Normals 0.81 0.41 0.44    0.34  0.43 0.71  0.85 1.23 0.98 0.55  0.68  0.90   8.33
  Percent of Normal  123 256 220   29  128  63 88  115  5  9  81  232   108
Snowfall 4.0 5.0 8.3   1.3 5.2  3.5  4.3  T 0.0 0.0  0.0  T   31.6
1981-2010 Normals 0.5 3.8 6.5   4.6 7.3 5.0 3.9 0.6 0.0 0.0 0.0 0.0   32.2
Percent of Normal 800 132 128   28 71  70  110  0 0  0  0  0   98
                               
Jeffrey City  None 0.43 0.31 0.20   0.06 0.99 0.15 2.13 2.64 0.08 0.24 0.21  3.18   10.62
  1981-2010 Normals 0.91 0.59 0.42    0.31  0.41 0.86  1.27 1.85 1.15 0.89  0.60  0.80   10.06
  Percent of Normal  47 53 48   19  241  17  168  143 7 27  35 398   106
Snowfall 3.0 2.0 3.0   1.0 12.0 2.0  26.0  6.0  0.0 0.0 0.0  9.0   64.0
1981-2010 Normals 7.3 6.6 5.5   4.6 6.7 9.4 10.2 4.9 0.4 0.0 0.0 1.4   57.0
  Percent of Normal  41 30 55   22 179 21  255  122 0  0 0  643   112
                               
Kaycee  D0 0.28 0.75 0.19   0.26 0.07 0.59 1.25 1.13  0.56 0.60 0.43  2.32   8.43
  1981-2010 Normals 1.04 0.57 0.31   0.30 0.34 0.74 1.46 2.37 1.84 1.42 0.80 1.18   12.37
  Percent of Normal  27 132 61   87  21 80 86 48 30 42  54 197   68
Snowfall 0.1 4.0 6.0   3.0 3.0 3.0 15.5  T 0.0 0.0  0.0  4.0   38.6
1981-2010 Normals 1.5 4.2 6.0   5.9 6.3 8.0 4.7 0.6 0.1 0.0 0.0 0.2   37.5
  Percent of Normal  7 95 100   51 48 38  330 0 0  0  0  2000   103
                               
Moose   D1 2.16 2.19 3.70   1.17 0.74 1.23 1.79 1.59 0.22 1.70 0.49  2.59   19.57
  1981-2010 Normals 1.47 2.64 2.67   2.58 1.82 1.62 1.49 1.88 1.61 1.29 1.29 1.44   21.80
  Percent of Normal  147 83  139   45  41  76  120  85  14 132  38  180   90
Snowfall 1.8 10.2 33.9   19.7 19.5  13.1  7.0  2.6 0.0 0.0  0.0  T   107.8
1981-2010 Normals 4.8 24.1 44.7   36.9 26.6 15.9 7.4 2.2 0.0 0.0 0.0 0.2   162.8
  Percent of Normal  38 42 76   53 73  82  95  118 0  0  0  0   66
                               
Old Faithful  D0 2.64 1.31 4.29   1.68 0.49 2.01 2.46 1.27 0.98 0.65 0.97  3.86   22.61
  1981-2010 Normals 1.66 2.29 3.16   2.11 1.99 2.21 2.21 2.80 2.47 1.55 1.46 1.46   25.37
  Percent of Normal   159 57 136   80  25  91  111  45 40 42  66 264   89
Snowfall 14.0 11.5 49.5   38.5 9.0 27.0  21.0  T 0.0 0.0  0.0  2.0   172.5
1981-2010 Normals 7.7 31.7 43.8   37.5 31.1 26.8 19.3 7.3 1.2 0.0 0.0 1.4   207.8
  Percent of Normal  182 36 113   103 29  101  109  0 0 0  0  143   83
                               
Powell Field Station   D0 0.24 0.09 0.15   0.29 0.07 0.15 0.39 1.99 0.16 1.45 0.26 2.27   7.51
  1981-2010 Normals 0.56 0.18 0.13   0.21 0.13 0.29 0.51 1.40 1.35 0.87 0.52  0.65   6.80
  Percent of Normal  43 50 115   138  54  52  76  142  12  167  50 349   110
Snowfall 0.0 1.0 2.0   2.6 T  T  1.0  0.0 0.0 0.0  0.0  0.0   6.6
1981-2010 Normals  1.2 1.3 1.2   2.3 0.5 2.5 0.5 0.5 0.0 0.0 0.0 0.1   10.1
  Percent of Normal  0 77 167   113 0  0  200  0  0  0  0  0   65
                               
Riverton (downtown)  None 0.36 0.52 0.35   0.21 0.45 0.17 1.48 1.54 0.02 0.38 0.05 3.09   8.62
  1981-2010 Normals 0.85 0.41 0.24   0.28 0.33 0.56 0.98 1.45 1.21 0.78 0.50 0.83   8.42
  Percent of Normal  42  127 146   75  136  30  151  106  2 49  10 372   102
Snowfall 3.2 3.5 6.1   3.8 8.9  4.3  24.7  6.7  0.0 0.0  0.0  5.7   66.9
1981-2010 Normals 3.7 4.3 4.8    4.8  6.0  5.9  6.1 1.2 0.0 0.0 0.0 0.3   37.1
  Percent of Normal  86 81 127   79 148  73  405  558  0 0  0  1900   180
                               
Thermopolis   D0 0.66 0.17 0.38    0.37 0.59 0.51 1.33 2.72 0.19 0.26 0.09 3.16   10.43
  1981-2010 Normals 1.26 0.80 0.46   0.35 0.45 0.87 1.46 1.86 1.51 0.88 0.58 1.23   11.71
  Percent of Normal   52  21 83   106  131  59  91  146 13 30  16  257   89
Snowfall 1.0 6.0 4.0   5.5 5.0  2.0  11.5  T 0.0 0.0  0.0  2.0   37.0
1981-2010 Normals 2.4 3.7 4.5   5.6  4.6 2.5 2.8 0.4 0.0 0.0 0.0 0.2   26.7
  Percent of Normal  42 162 89   98  109  80  411  0  0  0 0  1000   139

Drought Classifications on October 22, 2013     |      XX.X / M - Data partially or completely missing

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