Area Forecast Discussion
Issued by NWS Memphis, TN
Issued by NWS Memphis, TN
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580 FXUS64 KMEG 141735 AFDMEG Area Forecast Discussion National Weather Service Memphis TN 1235 PM CDT Sat Sep 14 2024 ...New AVIATION... .SYNOPSIS... Issued at 421 AM CDT Sat Sep 14 2024 Rainy conditions and below normal temperatures will continue into the early part of next week, as low pressure remains over the Midsouth. Dry and warmer air will spread into the Midsouth Tuesday and Wednesday, as an upper level ridge builds in from the west. && .DISCUSSION... (Today through Friday) Issued at 421 AM CDT Sat Sep 14 2024 Early morning GOES water vapor imagery showed the remnant midlevel low pressure of Tropical Depression Francine had sheared into an elongated trough centered near Memphis and extending from the Ozarks to northern AL. The bulk of rainfall was occurring on the eastern side of the shear axis, in an area of elevated moisture convergence across the TN River valley. The convergent axis will weaken and rotate to the north side to the midlevel trough center, as it drops into north MS this afternoon. The Flood Watch was continued for another day over northeast MS. The upper trough will move little on Sunday, but continue to weaken. An upper ridge axis over TX will begin to build north into the central plains and mid-MS River Valley on Monday and Tuesday, as the weakening upper trough exits to our south. A few showers and thunderstorms will remain over north MS on Monday, but warmer and predominately dry conditions should prevail over all the Midsouth by Tuesday. The warm and dry weather will continue through late next week, as an Omega blocking pattern develops, keeping the Midsouth under the eastern periphery of the upper ridge. PWB && .AVIATION... (18Z TAFS) Issued at 1235 PM CDT Sat Sep 14 2024 MVFR and IFR CIGs will prevail through the period as the remnants of Francine remain parked over the Mid-South. Overnight, expect a widespread IFR deck to develop, impacting TUP and MEM. In addition, a low level jet will stretch from west Tennessee into northern Alabama. Confidence for impacts are greater this period, so added WS to MKL TAF. Greater rain chances return this afternoon, lasting through Sunday morning. Overall, thunder probabilities remain low with this activity so opted against TS mention at this time. Otherwise, east winds will be relatively steady at 9 - 11kts. ANS && .MEG WATCHES/WARNINGS/ADVISORIES... AR...None. MO...None. MS...Flood Watch through Sunday morning for MSZ004>006-009-014>017- 023-024. TN...Flood Watch through Sunday morning for TNZ091-092. && $$ PUBLIC FORECAST...PWB AVIATION...ANS