Area Forecast Discussion
Issued by NWS Paducah, KY
Issued by NWS Paducah, KY
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724 FXUS63 KPAH 141139 AFDPAH Area Forecast Discussion National Weather Service Paducah KY 639 AM CDT Fri Jun 14 2024 .KEY MESSAGES... - Slight chance of thunderstorms early this morning and again this afternoon mainly over southeast Missouri. - Hot and humid summer-like air hits by Sunday and reigns thru next week with daily heat indices around 100 degrees. An isolated heat of the day thunderstorm could bring some relief to a few locations Monday through Wednesday. && .DISCUSSION... Issued at 327 AM CDT Fri Jun 14 2024 As expected, the overnight convection has struggled to make it into the Quad State. A few showers will attempt to sag south through western portions of southeast Missouri through sunrise, but no lightning is expected and rainfall will be under a tenth of an inch. Some scattered convection over central Illinois may dive toward the Tri State through daybreak. For now will have some very slight chance PoPs in the far northeast for this possibility. The HREF does not generate any convection across the Quad State today, but with moisture pooling over the region moderate instability is expected. It appears that rather deep mixing will occur over southeast Missouri, and with some help from the Ozark Foothills, a few high-based thunderstorms cannot be ruled out. Some gusty winds, torrential downpours and lightning will be the primary concerns. A few locations over the western half of the region could see heat indices reach 100 degrees this afternoon. The cold front that moves through the region today will have more of an impact on dewpoints tonight and Saturday than on temperatures. While dewpoints over most of the region Saturday afternoon will be in the lower 60s, if not lower, 70 degree dewpoints could hang on over Carter and Ripley counties. With heat indices there once again near 100 degrees, it is reasonable to consider some isolated diurnal development. However, a GFS sounding near Van Buren shows that warm mid-level air should easily cap any attempt at convective initiation Saturday afternoon. South winds and low-level moisture will return to the entire region Sunday. Deep mixing is expected once again and temperatures are expected to soar into the middle 90s. Factoring in the moisture it will feel like 100 over most of the region. A very isolated thunderstorm cannot be completely ruled out in the afternoon over the southern half of the region, but the chance is just too low to mention at this time. For all of next week high pressure aloft will be the dominant feature on the weather map. It will initially be centered to the east of the region, but by the second half of the week it is expected to build westward over the Quad State. The ECMWF continues to champion the ridge through the week, with the ECENS indicating a 30 year return interval on the 500mb heights Wednesday through Friday. With weak disturbances riding northward through the region early in the week, isolated afternoon thunderstorms cannot be ruled out Monday through Wednesday. The greatest chance will be over southeast Missouri on Tuesday, but that is only about a 25% chance. In the absence of thunderstorms, heat indices will likely reach 95 to 100 degrees throughout the region each afternoon next week. Summer appears to be here for the long haul! && .AVIATION /12Z TAFS THROUGH 12Z SATURDAY/... Issued at 639 AM CDT Fri Jun 14 2024 The TAFs are VFR. A weak cold front will turn the winds to the northwest at under 10kts by midday. An intermittent 3-5kft ceiling is possible throughout the area today. Light winds are expected tonight. && .PAH WATCHES/WARNINGS/ADVISORIES... IL...None. MO...None. IN...None. KY...None. && $$ DISCUSSION...DRS AVIATION...DRS