Longest Heat Wave In Years Begins Sunday

Below is the 0z run of the GFS MEX MOS guidance for Lafayette. It's worth noting that the temperatures (bolded in red) and dewpoints (bolded in blue) it is predicting could be underdone. Even so, for example, a temperature of 93º with a dewpoint of 75º yields a heat index value of 103º. As you can see, that will be the norm for the entire week. I think it is in the realm of possibilities that heat index values will be 105º or greater for the duration of next week...even continuing through the following weekend. Values over 105º are dangerous and if you plan on doing any outdoor activities take precautions. Info on heat waves and their effects: http://www.weather.gov/om/heat/index.shtml

LAFAYETTE           
 KLAF   GFSX MOS GUIDANCE   7/15/2011  0000 UTC                       
 FHR  24| 36  48| 60  72| 84  96|108 120|132 144|156 168|180 192      
 FRI  15| SAT 16| SUN 17| MON 18| TUE 19| WED 20| THU 21| FRI 22 CLIMO
 X/N  84| 63  87| 71  91| 73  92| 74  92| 74  93| 73  93| 73  93 64 85
 TMP  79| 67  82| 75  85| 76  86| 77  86| 77  87| 76  87| 76  86      
 DPT  63| 64  71| 73  74| 73  75| 73  75| 73  75| 72  74| 72  73      
 CLD  PC| CL  PC| PC  PC| PC  PC| PC  PC| PC  PC| CL  PC| PC  PC      
 WND   6|  5   5|  3   7|  4   6|  4   8|  4   7|  6   8|  6   7      
 P12   2|  7  12| 11  11|  7  16| 26  18| 26  21| 19  27| 25  17999999
 P24    |     12|     12|     25|     35|     37|     36|     32   999
 Q12   0|  0   0|  0   0|  0   0|  0   0|  0   0|  0    |             
 Q24    |      0|      0|      0|      0|      0|       |             
 T12   6|  4  18|  7  30| 11  21| 31  32| 24  22| 15  25| 19  28      
 T24    |  6    | 18    | 40    | 37    | 41    | 40    | 40