Area Forecast Discussion
Issued by NWS
Issued by NWS
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227 FXUS62 KTAE 141107 AFDTAE Area Forecast Discussion National Weather Service Tallahassee FL 707 AM EDT Tue May 14 2024 ...New AVIATION... .NEAR TERM... (Today and tonight) Issued at 259 AM EDT Tue May 14 2024 Another morning of shower and thunderstorms is forecast as an MCS approaches from the west. This will bring widespread rain and thunderstorms to the region this morning before tapering off late this morning and into the afternoon. The SPC has painted a Slight Risk (level 2 of 5) for severe weather from Gulf Co, FL to Lowndes Co, GA while the rest of the service area is in a Marginal Risk (level 1 of 5). Observations this morning have shown that dew points are generally around 70 in FL though a few upper 60s are closer to the FL/GA border and mid to upper 60s are found in the just north of there. In terms of meso-analysis, SPC shows a bit of a roller coaster of SBCAPE riding along the coast, with SBCAPE increasing inland north of Apalachee Bay. Shear looks good too. It will be interesting to see the 6Z sounding and compare the data to see how the atmosphere could interact with the environment. Thinking generally remains the same, with damaging wind gust and perhaps a few tornadoes being possible. In addition to the severe threat, we`ll need to keep an eye on heavy rain with PWATs estimated to be around 1.5 to 1.8 inches. After the main MCS rolls through, there may be some residual showers and storms for much of the inland and western areas. Guidance gets a bit messy in the evening to overnight hours either keeping us dry or bringing an additional round of showers and storms from about Lowndes Co, GA to about Gulf Co, FL. Opted to keep some higher pops in this area from the NBM to account for this. && .SHORT TERM... (Wednesday through Thursday night) Issued at 259 AM EDT Tue May 14 2024 For the start of this term, we will begin transitioning (briefly) into a post-frontal environment. The Southeast Big Bend will likely have lingering showers and a few thunderstorms during the morning hours before clearing out during the afternoon. PoPs for Wednesday range around 30%-60% during the late morning into afternoon hours for the Southeast Big Bend. The cold front will make its way through the region from a northwest to southeast trajectory, during the evening hours on Wednesday into the night. During the day on Thursday, upper level ridging will build to the west behind the frontal passage. This ridge will keep us dry and quiet for Thursday, with slightly warmer temperatures. Temperatures for the short term will have highs in the upper 80s to near 90 on Wednesday and upper 80s/low 90s on Thursday. The overnight lows will be in the mid 60s. && .LONG TERM... (Friday through Monday) Issued at 259 AM EDT Tue May 14 2024 An upper-level trough approaches on Friday that will bring our next chance for showers and thunderstorms through the weekend. The environmental conditions would suggest that some storms may be strong to severe with gusty winds being the main concern, a tornado or two, and hail; along with heavy rainfall will also be of concern. The WPC has highlighted Friday (Day 4 ERO) in a Slight risk (2 of 4) for our central time zone counties, and a Marginal risk (1 of 4) for areas to the east, excluding the southeast Big Bend. The heavy rain threat extends into Saturday where the entire CWA is highlighted in a Marginal Risk for excessive rainfall. Light showers and thunderstorms, lingering behind from Friday- Saturday will be possible on Sunday ahead of the next front clearing things out by Monday. It appears that deep-layer ridging will return for the start of the work week, keeping us high and dry heading into the extended forecast. PoPs for Friday range between 40 and 70 percent, with the higher values over our SE Alabama counties. Heading into Saturday, the rain travels east, keeping the highest chances along the I-10/I-75 corridor with PoPs around 70%. Sunday`s chances will be highest for the southeast Big Bend, but PoPs are about 40%-50%. Temperatures for the long term will mainly have highs in the upper 80s to low 90s and morning lows in the mid to upper 60s. && .AVIATION... (12Z TAFS) Issued at 706 AM EDT Tue May 14 2024 Ongoing scattered showers and thunderstorms for the start of this TAF period. Inside the thunderstorms, gusty winds will be the main concern. Winds gusting up to 35kts may be possible through 18z for all TAF sites, then diminishing to about 20kts through 00z. MVFR cigs are expected through most of the period, although there may be a few breaks that allow for VFR cigs this afternoon through the evening. MVFR to IFR cigs are expected to redevelop following 06z Wednesday. Showers will be possible throughout the day and night but, confidence is medium after this morning`s storms move through. && .MARINE... Issued at 259 AM EDT Tue May 14 2024 Showers and thunderstorms are moving into our marine zones this morning with the potential for strong gusty winds, waterspouts, and frequent lightning. Multiple rounds of storms are expected through the day today. Outside of storms, gusty winds are still likely as a cold front eventually approaches by Wednesday night. Advisory level conditions are possible, hence a Small Craft Advisory is in effect this morning through tonight. Favorable boating conditions are expected to return briefly for Thursday before our next system on Friday through the weekend. && .FIRE WEATHER... Issued at 259 AM EDT Tue May 14 2024 Wet weather continues this morning, with rain and tstorms moving in from the west. This cluster of storms is expected to organize some more, potentially causing severe weather. The best chances for severe weather are highlighted in the Slight Risk, which starts at about Gulf Co, FL and cuts up towards Lowndes Co, GA. Damaging wind gusts and perhaps a few tornadoes will be possible, in addition to heavy rain. Tomorrow, conditions should start to dry out and then hold through Thursday. High dispersions are forecast during this time, which will be the only fire weather concern. Wet weather looks to return Friday. && .HYDROLOGY... Issued at 259 AM EDT Tue May 14 2024 The Flood Watch is still in effect through this evening for mainly the FL counties, except Dixie county. Seminole and Decatur counties in Georgia are also included. The Florida Big Bend is highlighted in a Slight Risk (2 of 4) for excessive rainfall today (Tuesday) with the rest of the CWA in a Marginal Risk (1 of 4). For the rest of these storms, 2-3 inches are possible with isolated higher amounts. Heavy rain chances return heading into the weekend on Friday with another Slight Risk for our western counties, and a marginal risk for our eastern counties. The rain chances continue into Saturday with a Marginal risk for the entire CWA. For the weekend storms, QPF amounts are about 1-2 inches, however isolated higher amounts will be possible. && .SPOTTER INFORMATION STATEMENT... Spotter activation is requested. Spotters should safely report significant weather conditions and/or damage by calling the office or tweeting us @NWSTallahassee. && .PRELIMINARY POINT TEMPS/POPS... Tallahassee 83 70 88 67 / 70 50 10 0 Panama City 81 72 84 70 / 80 30 10 0 Dothan 82 68 86 63 / 70 20 0 0 Albany 81 68 85 63 / 80 30 10 0 Valdosta 82 69 87 66 / 80 60 20 0 Cross City 85 69 85 67 / 80 80 60 10 Apalachicola 80 73 84 72 / 80 50 20 0 && .TAE WATCHES/WARNINGS/ADVISORIES... FL...Wind Advisory until noon EDT /11 AM CDT/ today for FLZ007>017- 026-027-108-112-114-115-127. Flood Watch through this evening for FLZ007>019-026>029-108-112- 114-115-118-127-128. High Rip Current Risk through late Thursday night for FLZ108-112- 114-115. GA...Wind Advisory until noon EDT today for GAZ142-143-155>157. Flood Watch through this evening for GAZ155-156. AL...Wind Advisory until 11 AM CDT this morning for ALZ065>069. GM...Small Craft Advisory from 11 AM this morning to 8 AM EDT Wednesday for GMZ730-755-765-775. Small Craft Advisory until 7 AM CDT Wednesday for GMZ750-752-770- 772. && $$ NEAR TERM...KR SHORT TERM...Montgomery LONG TERM....Montgomery AVIATION...Montgomery MARINE...Montgomery FIRE WEATHER...KR HYDROLOGY...Montgomery