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Table 8. Summary of single season Apr. -Jun. Precipitation/HCI Relationships for the Arkansas basin <br />(dark `X' indicates a relatively strong relationship and light 'X' indicates a relatively weak <br />relationship). <br />C - Summer Precipitation (July- September) — Sinale Seasonal Totals <br />The one variable that indicated some level of predictability with respect to summer <br />precipitation (total) in this area was the ENSO HCI's. However, unlike many of these <br />variables where the overall theme of wet -El Nino /dry - La Nina is actually reversed in <br />this situation where La Nina (either MEI or SOI) has a wet tendency. However, this <br />relationship is not overly robust and use of this for planning purposes maybe considered <br />tentative. <br />D - Summer Precipitation — Days with 0.10" or treater (May 1- September 30) <br />There were two stations analyzed to see if /how HCI may affect the number of <br />`wet' days across the area in Pueblo and La Junta. For Pueblo there was quite a notable <br />difference in the correlation with the NAO as shown in Figure 19. <br />Figure 19. Relationship between days with 0.10" or greater for May to September at Pueblo with <br />29 <br />PDO <br />MEI <br />SOI <br />Nino 3.4 <br />NAO <br />AMO <br />Upper Ark. <br />X <br />X <br />Middle Ark. <br />X <br />X <br />Lower Ark. <br />X <br />C - Summer Precipitation (July- September) — Sinale Seasonal Totals <br />The one variable that indicated some level of predictability with respect to summer <br />precipitation (total) in this area was the ENSO HCI's. However, unlike many of these <br />variables where the overall theme of wet -El Nino /dry - La Nina is actually reversed in <br />this situation where La Nina (either MEI or SOI) has a wet tendency. However, this <br />relationship is not overly robust and use of this for planning purposes maybe considered <br />tentative. <br />D - Summer Precipitation — Days with 0.10" or treater (May 1- September 30) <br />There were two stations analyzed to see if /how HCI may affect the number of <br />`wet' days across the area in Pueblo and La Junta. For Pueblo there was quite a notable <br />difference in the correlation with the NAO as shown in Figure 19. <br />Figure 19. Relationship between days with 0.10" or greater for May to September at Pueblo with <br />29 <br />