003 FXUS63 KEAX 221125 AFDEAX AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO 625 AM CDT Wed May 22 2013 .SHORT TERM...(Today through Friday) Issued at 254 AM CDT WED MAY 22 2013 The upper-level low will pass just to the north of the forecast area this afternoon as it tracks to the east southeast. This close proximity may lead to a few showers across northern and northeastern Missouri this afternoon. These should be mainly diurnally driven so think the best chances will be during the afternoon with dissipation around 00Z or so. A cool and dry surface ridge will build into the region Thursday and with the upper storm exiting to the east and shortwave ridging aloft, we should see quiet and comfortable weather. Highs should range from the upper 60s to the lower 70s with humidity in the 40 to 50 percent range. For Friday and especially Friday night, chances for precipitation will increase. At the surface, the high pressure center will be sliding off into the Great Lakes. This will eventually turn our winds to the southeast but trajectories for our area will basically be recirculating the cooler and drier air into the region. While it looks to a bit warmer, highs should still be in the mid 70s and humidity values of 40 to 50 percent will continue to result in comfortable weather conditions. Have kept a mention of low PoPs across eastern Kansas and far western Missouri for the daytime hours. But not very confident that precipitation will make it this far east through the day. The better chances will come over night when broad and moist isentropic ascent will spread across the area. Still the chances look to be less than 50 percent at this time. The best chances for storms should be more across central Kansas and Nebraska where the nose of the low-level jet will be focused. .LONG TERM...(Saturday through Tuesday) Issued at 254 AM CDT WED MAY 22 2013 Warming temperatures and on-and-off thunderstorm chances will spread through the weekend and the early half of next week, as ridging gradually strengthens over the eastern Plains and a series of shortwave troughs push through the forecast area. Widespread severe weather is not anticipated through the end of the forecast period, due to a lack of low-level focus for convective initiation underneath the mid-level disturbances. The best chances for precipitation will be on Saturday afternoon and into the evening as both the EC and GFS bring a fairly well-defined shortwave trough through northern or central Missouri; and then again on Sunday as trailing energy continues to push through the region. Afterward, lower-end precipitation chances will spread through the rest of the forecast period as a multitude of shortwave troughs head into the region; however, the timing and placement of these features becomes very uncertain as we move further into next week. Highs on Saturday and Sunday will be near to slightly above normal as ridging begins to set up over the region; for Monday through Wednesday, highs will hit a few degrees above normal in the lower to mid 80's. Lows will also be several degrees above normal in the mid 60's throughout the long-range forecast period. && .AVIATION...(For the 12Z TAFS through 12Z Thursday Morning) Issued at 625 AM CDT WED MAY 22 2013 Mainly VFR conditions are expected today; however, a few higher-end MVFR ceilings between 2-3 kft may sneak into northwest Missouri this morning. Although ceilings will remain broken to overcast for much of the forecast period, bases should rise above 3 kft by 18z throughout the region. Winds will remain out of the west northwest today at 8 to 12 kts. && .EAX WATCHES/WARNINGS/ADVISORIES... KS...NONE. MO...NONE. && $$ SHORT TERM...CDB LONG TERM...Laflin AVIATION...Laflin