


Area Forecast Discussion
Issued by NWS Quad Cities, IA IL
Issued by NWS Quad Cities, IA IL
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233 FXUS63 KDVN 132335 AFDDVN Area Forecast Discussion National Weather Service Quad Cities IA IL 635 PM CDT Sun Jul 13 2025 .KEY MESSAGES... - After a brief reprieve this weekend, warmer temperatures are forecast Monday through Wednesday, before turning more seasonal for the latter half of the week. - There are periodic chances of showers and storms Tuesday through Saturday with the best chances (40 - 60%) Wednesday afternoon and evening. Severe chances appear low at this time. - Flooding is occurring or expected to occur on some area rivers. Please see the hydrology section below for more details. && .SHORT TERM /THROUGH MONDAY/... Issued at 125 PM CDT Sun Jul 13 2025 At 1 PM, a 500 MB trough extends into the area today with a shortwave lifting northeastward across Missouri into Illinois. Scattered showers and isolated thunderstorms extending northward into mainly Hancock, McDonough and Warren Counties. 20 to 30 percent chances are forecast to linger across this area through 00 UTC Monday before chances quickly come to en end from west to east. This trough and shortwave are forecast to shift to the east tonight with zonal flow aloft across the region through Monday. Models show clouds quickly shifting tot he east this evening with clear skies tonight. Low temperatures should be similar to last night with temperatures ranging from 62 to 66 degrees from north to south across the area. Monday will be quiet but noticeably warmer with light south winds through the day and mostly sunny skies. This will also result in dewpoints climbing back to around 70 degrees. High temperatures Monday are forecast to be in the upper 80s. Heat indices during the afternoon are forecast to be in the lower 90s. && .LONG TERM /MONDAY NIGHT THROUGH SUNDAY/... Issued at 125 PM CDT Sun Jul 13 2025 The work week forecast continues to have periodic chances of showers and storms, particularly for mid-week (chances as high as 40-60% for Wednesday PM). Overall, ensemble guidance suggests zonal flow will be the norm, depicted well in the 13.00z and 13.12z LREF 500 mb height cluster analysis. A few mid-level impulses embedded within the zonal flow will support more active conditions starting Tuesday. One key feature will be a surface cold front that is progged to sweep through the Upper Midwest Tuesday into Wednesday. There remains higher uncertainty on how far south the front progresses, given differences among the global models. However, there are some signals for stronger convection possible on Wednesday along the boundary per the various ML guidance, although these outputs are fairly muted. The active period could very well continue into the end of the week as strong upper- level ridging develops over the southeastern CONUS region, which could act to stall the frontal boundary over the Corn Belt region. Temperatures will warm up slightly for Monday through Wednesday before the aforementioned cold front approaches, with highs in the middle to upper 80s each day, gradually cooling off after that. && .AVIATION /00Z TAFS THROUGH 00Z TUESDAY/... Issued at 631 PM CDT Sun Jul 13 2025 Residual MVFR CIGS will clear southeast Iowa and west central Illinois through 03z/14. Toward sunrise HREF/SREF ensembles are painting a 25-40% probability of MVFR conditions developing along the Mississippi River into Illinois mainly south of Interstate 80. Although low, have elected to include a period of MVFR conditions a few hours either side of sunrise for KMLI/KBRL. Elsewhere across eastern Iowa the MVFR/IFR conditions are generally 10% or less. && .HYDROLOGY... Issued at 1234 PM CDT Sun Jul 13 2025 What is new with this issuance? The flood warning for the English River at Kalona was canceled with the river falling below flood stage. The flood watch for the Wapsipinicon River at Anamosa was canceled as the river is forecast to remain below flood stage. The flood watches for the Mississippi River at Gladstone and Burlington have been upgraded to warnings. The flood warnings for the Skunk River at Sigourney and the Iowa at Marengo remain in effect. There is lower confidence that the Skunk river at Sigourney will make it to flood stage with the river level remaining steady since yesterday morning. The flood watch remains in effect for the Wapsipinicon River at DeWitt. Rainfall is forecast across the area through Monday night. In bank rises will continue on area rivers before falling in the later part of the week. && .DVN WATCHES/WARNINGS/ADVISORIES... IA...None. IL...None. MO...None. && $$ SHORT TERM...Cousins LONG TERM...Schultz AVIATION...08 HYDROLOGY...Cousins