


Area Forecast Discussion
Issued by NWS
Issued by NWS
Versions:
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
695 FXUS62 KTAE 091853 AFDTAE Area Forecast Discussion National Weather Service Tallahassee FL 253 PM EDT Sun Mar 9 2025 ...New NEAR TERM, SHORT TERM, LONG TERM, MARINE, FIRE WEATHER, HYDROLOGY... .NEAR TERM... (Tonight and Monday) Issued at 211 PM EDT Sun Mar 9 2025 A quasi-stationary frontal is draped along/just south of I-10 as of 18Z with batches of showers and thunderstorms continuing to stream northeastward across the Tri-State region. The main concerns are a Marginal Risk (Level 1 of 5) of severe weather, flash flooding, and fog tonight. SB CAPE to the south of the boundary ranges from 500-1k J/kg, while SRH (0-1 km) just north of the boundary is around 300 m2/s2. As a result, storms near the boundary will need to be watched for rotation and the potential for a brief tornado. While low-level lapse rates remain poor due to considerable cloud cover, Bulk Shear (0-6 km) is around 50 kts, so storms will be capable of isolated damaging wind gusts. Cannot rule out some hail, but it should be on the smaller side if it occurs, given the hail parameters. The Flood Watch continues into tonight for the roughly southern half of the GA counties and all of the FL counties except Dixie. Favorable moisture transport with PWAT around 1.7 inches, forced along the stationary boundary, could lead to flash flooding with repeated training of heavy showers/storms into tonight. The most vulnerable area is closer to to I-10 in the FL Counties, where radar estimated rainfall as of 18Z is 2-4 inches. Dense marine fog could move into coastal areas overnight, as it did earlier today. Otherwise, expect patchy to areas of fog to develop this evening into the overnight hours, especially from the FL Big Bend into Southwest GA, where it could be locally dense. Lows in the 50s and 60s. Wraparound moisture on Monday keeps a chance of showers in the forecast mainly north of I-10, with gusty northwest winds in the wake of the departing low. Highs on Monday only in the mid- 50s north to mid-60s south. It will be chilly up north with the cloud cover/showers and gusty winds. && .SHORT TERM & LONG TERM... (Monday night through Saturday) Issued at 211 PM EDT Sun Mar 9 2025 Drier and cooler conditions are expected Monday night in the wake of a cold front. Lows are forecast generally in the 40s both Monday night and Tuesday night under clear skies before a gradual warming and moistening trend takes hold. A few rain showers will be possible across the region on Thursday as a shortwave passes across the Gulf Coast states. Temperatures may be a tad lower on Thursday as a result of increased clouds and rain chances, but there is no surface front associated with this system and therefore no big temperature changes are expected in its wake. The warming and moistening trend is forecast to continue until the next frontal system approaches the area over the weekend. While it`s still almost a week away, early signs point to some severe weather potential with this system. && .AVIATION... (12Z TAFS) Issued at 651 AM EDT Sun Mar 9 2025 Low pressure moving along a stalled front near the Gulf coast will lead to waves of SHRA and TSRA into the overnight hours at all of the terminals along with low cigs/vsbys. As of early afternoon, IFR/LIFR restrictions were in place at ECP/TLH/VLD with MVFR at ABY/DHN. Expect widespread IFR/LIFR overnight, especially in TSRA. Precip will diminish from west to east on Monday morning, with cigs lifting to IFR/MVFR by late morning at all terminals, as northwest winds increase to around 10 kts with gusts to around 20 knots at times. && .MARINE... Issued at 211 PM EDT Sun Mar 9 2025 An area of low pressure will move along the Gulf Coast before exiting to our east Monday. Showers and thunderstorms, and areas of dense marine fog, will continue through tonight. Some strong storms with gusty winds, hail, and waterspouts are possible. Meanwhile, Southerly winds will increase ahead of the low later today. As the low passes by, the pressure gradient will tighten, and winds will become more westerly and increase to advisory level with a few gusts near gale force possible, particularly west of Apalachicola. Seas will also build to 6 to 10 feet in response to the increasing winds. Northwesterly winds subside Monday night into Tuesday before becoming southerly Wednesday. && .FIRE WEATHER... Issued at 211 PM EDT Sun Mar 9 2025 Gusty northwest winds on Monday with lingering showers mainly north of I-10 over Southeast AL and Southwest GA, as a moist air mass remains in place. With strong transport winds and rising mixing heights, pockets of high dispersion are likely Monday afternoon over Southeast AL and Southwest GA. A much drier air mass filters in for Tuesday as minimum afternoon RH falls into the mid-20s to mid-30s. Despite the dry air, fire weather concerns should remain low on Tuesday, given recent wetting rains and much lighter winds. && .HYDROLOGY... Issued at 211 PM EDT Sun Mar 9 2025 Several waves of showers and storms will continue to produce locally heavy rainfall across portions of the area through this evening and into tonight. A swath of 2 to 4 inches of rainfall has fallen roughly along a line from coastal Walton County to Tallahassee and Valdosta over the last 12 to 24 hours, and another few inches of rain will be possible through tonight. Mainly advisory-level flooding is expected, but there could be a few spots of flash flooding if storms continue to train over the same areas, particularly in urban spots. A Flood Watch remains in effect for the Florida Panhandle, most of the Florida Big Bend, and portions of South Georgia until later tonight. Area rivers and streams are on the rise today with recent rainfall. Recent and expected rainfall will likely lead to minor flooding on several rivers including the Ochlockonee, Aucilla, and Withlacoochee over the coming days. No flood warnings have been issued yet, however since additional rainfall to come may have a large impact on eventual crests and potential flooding. After tonight, we have a drier spell forecast until Thursday, but significant rainfall is not expected with that system. && .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 57 63 46 74 / 90 20 0 0 Panama City 56 65 50 71 / 60 10 0 0 Dothan 52 62 42 73 / 70 30 0 0 Albany 51 58 41 72 / 80 50 0 0 Valdosta 55 63 45 74 / 90 30 0 0 Cross City 63 68 46 74 / 70 40 0 0 Apalachicola 59 64 50 70 / 70 0 0 0 && .TAE WATCHES/WARNINGS/ADVISORIES... FL...Flood Watch until 2 AM EDT /1 AM CDT/ Monday for FLZ007>019- 026>029-108-112-114-115-118-127-128. High Rip Current Risk through Monday evening for FLZ108-112-114- 115. GA...Flood Watch until 2 AM EDT Monday for GAZ143>148-155>161. AL...None. GM...Dense Fog Advisory until 9 PM EDT /8 PM CDT/ this evening for GMZ730-750-752-755-765-775. Small Craft Advisory from 2 AM EDT /1 AM CDT/ Monday to 5 AM EDT /4 AM CDT/ Tuesday for GMZ730-750-752-755-765-770-772-775. && $$ NEAR TERM...LF SHORT TERM...Merrifield LONG TERM....Merrifield AVIATION...LF MARINE...Merrifield FIRE WEATHER...LF HYDROLOGY...Merrifield