016 FXUS64 KMOB 162058 AFDMOB Area Forecast Discussion National Weather Service Mobile AL 358 PM CDT Thu May 16 2024 ...New NEAR TERM, SHORT TERM, LONG TERM, MARINE... .NEAR TERM... (Now through Friday night) Issued at 358 PM CDT Thu May 16 2024 Another active and very complicated weather pattern starts tonight and continues through Saturday morning. Several shortwaves will eject northeast from a very slow moving positive tilt trough moving through the plains. The first wave is expected to move in late this evening into the early morning hours on Friday and affect mainly southern portions of the area. We expect this line to be on a weakening trend, however gusty winds and heavy rain can be expected. There is the possibility of a wake low developing late tonight behind the line of showers and storms, bringing gusty winds to the coastal and marine area. The left over boundary from the morning convection will lift northward as a warm front through the day on Friday and potentially provide a focus for thunderstorm development. The pre-storm environment in the warm sector after midday Friday south of a northeastward moving warm front will have sufficient MLCAPE values around 1,500 to 2,200j/kg. Deep layer shear values as high as 50-55kts are expected by Friday evening. Large hail and damaging wind gusts will be the main threats. The tornado threat, while non-zero, will be mitigated due to the weak low level shear values. The Storm Prediction Center has placed the entire area in a Slight Risk for severe storms on Friday. Another shortwave and associated MCS is expected to approach the area Friday afternoon/evening. These storms could again pose a damaging wind and large hail threat. Additional showers and storms are possible into Saturday as the approaching cold front. The multiple rounds of rain on already saturated grounds will create the risk for flooding through Saturday. WPC had a moderate risk across northwest portions of the area with a slight risk across the remainder of the area. We have issued a Flood Watch for the entire area starting tonight at midnight. A high risk of rip currents is in effect from Friday morning through Sunday afternoon. /13 && .SHORT TERM... (Saturday through Saturday night) Issued at 358 PM CDT Thu May 16 2024 Active weather continues into Saturday as a final shortwave ejects northeastward across the local area. At the surface, hi-res model guidance suggests that a remnant outflow boundary from previous storms should be lingering across the area, possibly near the I-65 corridor. This outflow will serve as a focus for one last round of showers and storms to develop as the shortwave passes overhead. The primary concern with these storms will be heavy, training rainfall which could lead to continued flooding concerns across the area, especially over areas that see a copious amount of rainfall on Friday. Because of this, the Flood Watch will remain in effect through early Saturday afternoon (although if rainfall lingers a bit longer, then a small extension to the watch is possible). Deep-layer shear remains rather strong (around 50 knots) as a mid to upper jet develops overhead, however, the biggest question will be if we can destabilize again in the wake of the storms that moved through the area the previous night. If we can destabilize, then shear will be strong enough to allow for some storm organization, which could lead to the development of a few strong to severe storms. A Marginal Risk of severe weather is in place across much of the area on Saturday to account for this possibility. The main trough passes overhead Saturday night, with rain chances quickly decreasing from west to east throughout the overnight hours as a drier airmass advects in from the northwest. Highs on Saturday will reach the low to mid 80s. Lows Saturday night will only drop into the mid to upper 60s, with low 70s along the immediate coast. The rip current risk remains high through the period. /96 && .LONG TERM... (Sunday through Thursday) Issued at 358 PM CDT Thu May 16 2024 Upper-level troughing will slowly push into the western Atlantic as an upper ridge builds over the western Gulf. Subsidence from this ridge, along with high pressure developing over the southeast US, will keep the local area dry through at least Tuesday. Isolated to scattered rain chances return to the forecast by midweek as a shortwave moves across the Tennessee River Valley and the ridge sinks back to the southwest. Temperatures will remain quite warm, with highs generally in the upper 80s to low 90s and lows in the mid to upper 60s inland to lower 70s along the coast. /96 && .MARINE... Issued at 358 PM CDT Thu May 16 2024 Southerly winds will increase to moderate by Friday, along with building seas, ahead of an approaching front. The approaching front will bring showers and thunderstorms to the marine area tonight through Saturday. It should be noted that a wake low may possibly develop late tonight behind the initial line of storms, which could lead to a brief window of gusty winds for marine zones near the coast. A light offshore flow returns late in the weekend into early next week in the wake of the front. /96 && .PRELIMINARY POINT TEMPS/POPS... Mobile 69 84 68 82 67 88 67 90 / 50 70 60 80 30 10 0 0 Pensacola 72 84 72 82 71 87 70 88 / 50 60 60 80 40 10 0 0 Destin 73 83 74 81 72 85 72 85 / 30 60 40 80 40 10 0 0 Evergreen 66 85 68 83 66 87 64 89 / 40 80 70 90 40 10 0 0 Waynesboro 66 83 66 84 65 88 64 91 / 70 90 70 70 20 10 0 0 Camden 66 82 67 83 65 86 64 88 / 60 90 80 80 30 10 0 0 Crestview 67 86 70 82 67 88 64 90 / 30 70 50 90 40 10 0 0 && .MOB WATCHES/WARNINGS/ADVISORIES... AL...Flood Watch from midnight CDT tonight through Saturday afternoon for ALZ051>060-261>266. High Rip Current Risk from Friday morning through Sunday afternoon for ALZ265-266. FL...Flood Watch from midnight CDT tonight through Saturday afternoon for FLZ201>206. High Rip Current Risk from Friday morning through Sunday afternoon for FLZ202-204-206. MS...Flood Watch from midnight CDT tonight through Saturday afternoon for MSZ067-075-076-078-079. GM...None. && $$ This product is also available on the web at: www.weather.gov/mob