Area Forecast Discussion
Issued by NWS Charleston, SC
Issued by NWS Charleston, SC
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
800 FXUS62 KCHS 140634 AFDCHS Area Forecast Discussion National Weather Service Charleston SC 134 AM EST Fri Nov 14 2025 .SYNOPSIS... Dry high pressure will remain the primary feature across the area through the weekend. A dry cold front could move through the area early next week. && .NEAR TERM /THROUGH TONIGHT/... Through Daybreak: Aloft, northwest flow prevails while at the sfc high pressure remains centered west/northwest of the local area. The pattern remains favorable for strong radiational cooling with light/calm winds expected under clear skies through sunrise. Low temps should dip into the upper 30s/low 40s inland to mid-upper 40s closer to the coast. Temps should stay warmer along the immediate beaches, around 50 degrees. Today: Aloft, a northwest downslope flow will prevail across the Southeast United States between a longwave trough shifting further off the Northeast Coast and a ridge extending across the Central United States. At the sfc, high pressure will remain the dominant weather feature across the region, becoming centered across the local area by late morning and persisting through the remainder of the day. Sunny conditions supporting ample sfc heating along with a downslope flow will support mixing out of sfc dewpts late morning and afternoon, leading to relative humidity values in the 25-30% range away from the coast. Locations well inland near the Savannah River could approach 20-25% during peak heating. Despite these lower RH values, sfc winds will remain very light, limiting fire weather conditions for the day. High temps should range in the upper 60s across Southeast South Carolina to low-mid 70s across Southeast Georgia. Tonight: Aloft, northwest flow prevails through the night. At the sfc, high pressure centered across the local area will be slow to nudge south, favoring another night of radiational cooling as winds decouple early and become light/calm under clear skies. Overnight temps should dip to around 40 degrees west of I-95 and to the mid-upper 40s closer to the coast. Again, temps along the beaches could stay around 50 degrees late night. Latest guidance also indicates lower condensation pressure deficits across Southeast Georgia, which could eventually support some patchy/shallow ground fog where dewpts stay in the lower 40s late. && .SHORT TERM /SATURDAY THROUGH MONDAY/... As high pressure situates itself across northern Florida, a deepening shortwave trough will shift across the Great Lakes and Mid- west. Expect dry, breezy southwesterly winds to persist throughout Saturday as temperatures climb into the mid to upper 70s. Despite this southwesterly flow, a rain-free forecast has been maintained as the atmosphere remains extremely dry with PWATs ranging from 0.5 to 0.75 inches. Overnight, lows will drop into the mid to upper 50s across southeast South Carolina and upper 40s to low 50s across southeast Georgia. Sunday: This aforementioned deepening trough will pivot eastward into Northeast and push a dry cold front into the southern Appalachians by the afternoon. Ahead of this feature, southerly low- lvl flow will transport mild thicknesses across the region. With warm 850-700MB temperatures and partly sunny conditions, temperatures should be able to reach into the mid to upper 70s at the surface. It`s possible to see some spots across southeast Georgia reach into the low 80s. Again, given the dry conditions, a rain-free forecast was maintained for Sunday. Expect lows to reach into the upper 40s to low 50s across the inland counties and low to mid 50s along the coastline as only modest cooling will be seen from the frontal passage overnight. Monday: Post-FROPA, surface high pressure will build into the region and allow quiet conditions to persist. Winds will switch out of the northeast and then slowly turn more easterly throughout the afternoon. Atmosphere remains dry with PWATs near or less than 0.5 inches. Expect mostly sunny skies and temperatures in the upper 60s to low 70s across southeast South Carolina and mid to upper 70s across southeast Georgia. && .LONG TERM /MONDAY NIGHT THROUGH THURSDAY/... A surface low pressure will organize across the Great Plains and shift towards the Mid-Atlantic by early Wednesday. Some uncertainty remains in the forecast as to how this will play out, however some model guidance indicates that a front will stall out nearby and produce light precipitation across the region on Wednesday. Regardless, this pattern will result in a progressive warm-up with temperatures returning to near normal on mid-week. && .AVIATION /06Z FRIDAY THROUGH TUESDAY/... VFR conditions will prevail at CHS/JZI/SAV terminals through 06Z Saturday. Extended Aviation Outlook: Prevailing VFR. && .MARINE... Today and Tonight: High pressure centered inland this morning will become centered across local waters by late morning, then persist throughout the day and overnight. The pattern will result in quiet marine conditions across local waters with north-northeast winds around 10 kt or less today becoming light and variable during the night. Seas will generally range between 1-2 ft. Saturday through Wednesday: As surface high pressure shifts across northern Florida and a cold front approaches the region, southwesterly winds will increase Saturday afternoon. Expect wind speeds 10 to 15 kt with gusts up to 20 kt on Saturday morning, and then pick-up to 15 to 20 kt with gusts up to 25 kt (mainly across the nearshore Charleston and outer Georgia waters). Therefore, Small Craft Advisories will likely be needed for the nearshore Charleston and outer Georgia waters Saturday afternoon into Sunday morning. Post-FROPA, winds should become light at 5 to 10 kt on Sunday afternoon through mid-week. Seas will range from 3 to 5 ft through the weekend, and then tapering back to 1 to 2 ft through the rest of the period. && .CHS WATCHES/WARNINGS/ADVISORIES... GA...None. SC...None. MARINE...None. && $$ NEAR TERM...DPB SHORT TERM...Dennis LONG TERM...Dennis AVIATION...Dennis/DPB MARINE...Dennis/DPB