Aikyam-Lab/Synoptic-Bench huggingface dataset:
Models move the area of high pressure over Alabama/northern Georgia further southeast into southern Georgia tonight. As a cold front continues to move east into the central Great Lakes region, S to SW flow will increase a bit as gradient winds begin to strengthen. This will advect somewhat warmer and more moist air into the region from the Gulf of Mexico. Expect warmer temperatures on Saturday despite abundant cloud cover with highs in the 60 to 65 degree range near and south of the Tennessee River (via westerly flow just ahead of the front.
420 PM MST Fri Nov 24 2017 Current surface map show cold front well south of the forecast area. High pressure builds across the area for tonight and Saturday with mostly clear/sunny skies and light winds.
Warm air advection will kick in late in the day, but with a cooler air mass to start with think we will stay in the 20s and 30s across much of the area tomorrow, with some low 40s in the southwest where there will be the most warm air advection and sunshine.
Cold front moving through the forecast area this afternoon, which allowed highs to climb into the mid to upper 70s ahead of it. Winds will diminish this evening as high pressure continues to build into the area. And while it will be cooler on Saturday with highs in the mid to upper 50s, it will still be well above normal which are in the mid 40s.
A weak cold front will move through the Ohio Valley Saturday morning offering only a slight chance of a shower. High pressure will build in behind the front, persisting into the middle of the work week, offering continued dry weather. High clouds starting to move into the region and gradient picking up with the approach of a cold front currently tracking through IL and MO. Low levels never really moisten up with the approach and passage of the cold front, but instead moisture drops down into the area in the form of increased low clouds. The surface cold front will clear the forecast area later Saturday morning with cooler air slowly working into the area.
Shower chances return with the approach and passage of a Saturday cold front. The wind field has already relaxed quite a bit, and with dewpoints straddling 20F, some additional downward pressure will be noted on temperatures through the remaining evening hours, especially in PA and in the valleys amongst the ridges. Fries Upper-level trough swings through Saturday evening, injecting slightly deeper moisture and bringing cooler mid-level air. Highest PoPs will be maintained north of I-80 and in the higher elevations. Not expected much more than a coating for most locations north of I-80 and in the Ridges, but a few locations could see up to a half an inch.
Warmer tonight (owing to greater near surface moisture) with lows in the upper 40s to lower 50s over the CWA.
818 PM EST Fri Nov 24 2017 The only changes to the previous forecast were to lower the low temperatures a couple of degrees based on the latest trends and decent radiational cooling conditions expected tonight. At the surface, low pressure developing off the Northeast Florida coast is pulling dry air into the region at lower levels, while clouds associated with the low remain well to the east. An inverted trough over the eastern Gulf of Mexico may touch off some showers of the marine area overnight. Look for lows in the lower 40s inland to upper 50s coast.
544 PM CST Fri Nov 24 2017 Temperatures have soared in central Kansas this afternoon, and wind speeds have increased greater than anticipated behind the cold front across central Kansas. After record setting warmth this afternoon, temperatures will remain unseasonably mild over the weekend as the air behind the cold frontal passage tonight will be of modified Pacific origin.
1052 PM EST Fri Nov 24 2017 High pressure will remain over the Carolinas through tonight then weaken Saturday. A dry cold front will approach from the northwest Saturday afternoon and cross our region Saturday night.
519 PM CST Fri Nov 24 2017 Cold front is approaching the region from the NW this afternoon, compressing the pressure gradient and resulting in a blustery afternoon. These winds are out of the SW with a mid level thermal ridge drifting east. Tomorrow, cool air will keep the highs in the low 50s, with light NW winds. The pattern sets up to repeat again with a cooler weekend behind the front.
Cloud cover is rolling in ahead of the cold front that will move through the mid state tomorrow morning. A dry cold front will sweep across the area between 15z and 19z, with a band of clouds at or above 12k feet occuring ahead of the front.
/Issued 256 PM CST Fri Nov 24 2017/ Upper high over Baja and northwest Mexico will provide a dry northwesterly flow aloft across the Panhandles through the weekend.
A weak cold front will move through the western CWA and Hill Country mid morning on Saturday, through I-35 corridor in the afternoon, and clear the southeast CWA Saturday evening. Temperatures tomorrow will be warmest near and south of Hwy 90/I-10, where highs could reach into the low 80s. Highs in the low 70s are forecast across the Hill Country with mid and upper 70s elsewhere north of Hwy 90/I-10.
936 PM CST Fri Nov 24 2017 The cold front is just about through southeast WI. Cold front is moving through the nearshore waters. Medium to High Cold front combined with mid level energy may set off a few showers across southern WI later this evening. Otherwise cold advection kicks in later tonight and this will persist into Saturday with low level thermal trough in place. So potential for more cloud cover along with significantly cooler temps.
A cold front will pass north to south tonight bringing north winds.
Height 925 mb winds progged to diminish this afternoon as a short wave trough with cold front slides over the area. Isolated light sprinkles or virga were noted over north central wisconsin early this afternoon, otherwise at 2 pm, the more organized band of showers were along or near a cold front over far northwest Wisconsin. Cooler air on northwest winds will pour into the area tonight, but the precipitation type will remain rain showers this evening. Upper heights increase later Saturday along with surface ridging to begin removing any strato cumulus clouds which had a chance to spill southward over the northern Great Lakes region.
Relatively mild continental air will continue across the region over the weekend, but temperatures will prove a bit cooler for Saturday in a post frontal air mass.
Satellite shows a low pressure system well off the California coast with a large cloud shield moving northward. Models continue to show a warm front moving through during the day.
18Z surface data has a cold front running from central Lake Superior southwest into Nebraska. Tonight, quiet and dry conditions along with diminishing winds will be seen as the cold front moves through the area. The quiet and dry weather will continue on Saturday but with much cooler temperatures. Most days temperatures will tend to be a few degrees wider than forecast diurnal range or slightly warmer highs and cooler lows.
Forecast soundings are really dry in the lowest levels.
503 PM CST Fri Nov 24 2017 A cold front will move through Arkansas late tonight and early Sat with no signficant impacts to aviation.
While frost is still possible across inland areas and the Northshore, the lowest temperatures will likely stay just above freezing. Minor differences tonight like the more westerly low level winds, slightly higher dewpoints, and some high cirrus clouds should help to account for the temps a few degrees warmer than early this morning. At upper levels, ridging was located over Baja California with a trough along the east coast. A reinforcing trough was located over the northern plains.
A weak cold front will move through the Ohio Valley Saturday morning offering only a slight chance of a shower. High pressure will build in behind the front, persisting into the middle of the work week, offering continued dry weather. The surface cold front will clear the forecast area later Saturday morning with cooler air slowly working into the area.
522 PM CST Fri Nov 24 2017 /00Z TAFS/ Main concern with this TAF package will be timing of a cold front across the area. /issued 221 PM CST Fri Nov 24 2017/ (Tonight and Tomorrow) An upper level ridge across the western half of the U. Otherwise, another dry cold front will move into the Big Country early tomorrow morning just before 12Z. This will keep temperatures much cooler tomorrow with highs forecast to be in the upper 60s to lower 70s.
318 PM PST Fri Nov 24 2017 Cooler weather will gradually build from the coast to inland areas through the weekend.
950 PM CST Fri Nov 24 2017 Another quiet night with some southern-passing cirrus along the eastern edge of Baja-centered upper ridging. around 10 degrees warmer with minimum interior low 50 temperatures by sunrise.
The current forecast appears to be on track with some cirrus clouds around ahead of the Great Lakes-Midwest upper trough.
520 PM MST Fri Nov 24 2017 A cold front is currently moving across the area early this afternoon with north winds gusting 30 to 40 mph.
The showers were occurring along and behind a cold front moving through the region. At 3 PM temperatures ranged from the upper 30s in northeast Minnesota to the low 50s in southern portions of Sawyer and Price Counties. Continued the earlier trends of light rain changing to a mix of rain, freezing drizzle, and snow over northern Minnesota. Nudged temperatures cooler for tonight based on the strong cold advection. Look for low temps in the low teens in northeast Minnesota to the upper 20s in northwest Wisconsin. A ridge of high pressure will scoot across the Northland on Saturday.
554 PM CST Fri Nov 24 2017 Cold front is moving through the area, bringing an end to a rather mild day. Once the front, mid clouds and light rain move through late afternoon and early evening, skies are quite clear and will remain so overnight and on Saturday as upper ridge moves in and subsidence takes hold.
636 PM EST Fri Nov 24 2017 High pressure over the area tonight will weaken Saturday.
Seeing our pressure gradient tighten ahead of a cold front moving into the Upper Midwest now. The added cloud cover and steady southerly winds will mean warmer lows, likely dropping to the lower to mid 40s for most locations. We will have a small window to warm up during the late morning/early afternoon hours Saturday before the northwest winds bring in the cooler air. By late night though, high pressure will ridge across the region, bringing lighter winds again.
Guidance is in good agreement that a cold front will move into the area late Sat aft and overnight.
On the surface map this afternoon, a cold front stretches from north central Wisconsin through central Iowa and extreme northwest Missouri to southwest Kansas.
the weak cold front will continue to push through Eastern Oklahoma and Northwest Arkansas and exit the region early Saturday morning.
Medium to High Cold front combined with mid level energy may set off a few showers across southern WI later this evening. Otherwise cold advection kicks in later tonight and this will persist into Saturday with low level thermal trough in place. So potential for more cloud cover along with significantly cooler temps.
653 PM EST Fri Nov 24 2017 High pressure provides dry weather through tonight. A cold front crosses Saturday with limited moisture.
859 PM CST Fri Nov 24 2017 Weak cold front continues to march east across extreme west central Illinois this evening. Winds continue to veer into a westerly direction west of I-55 as the cold front tracks into far west central Illinois. Cold front is approaching the region from the NW this afternoon, compressing the pressure gradient and resulting in a blustery afternoon. These winds are out of the SW with a mid level thermal ridge drifting east. Tomorrow, cool air will keep the highs in the low 50s, with light NW winds. The pattern sets up to repeat again with a cooler weekend behind the front.
A cold front will pass north to south this evening and early Saturday bringing north winds.
/issued 328 PM EST Fri Nov 24 2017/ Dry and cooler air will continue to move into South Florida as a cold front continues to pull farther away from the region. There will not be a significant cold blast associated with this as most of the cooler air will remain off to the north. Saturday will remain dry across the region as high pressure builds back into the area.
An alto cu deck will build into the region during the day Saturday in association with a relatively weak upper level trough and associated cold front.
1016 PM EST Fri Nov 24 2017 High pressure over the area tonight will weaken Saturday.
732 PM EST Fri Nov 24 2017 A cold front is working its way through central Wisconsin at this hour. A cold front will move across the area tonight.
This cooler trend resulted in the lowering of the expected overnight low temperatures at most sites by one to three degrees.
930 PM EST Fri Nov 24 2017 High pressure will extend over the area tonight with low pressure moving across to the southeast. A dry cold front will move through from the northwest Saturday night.
Satellite imagery shows a modestly amplified pattern across the Nation with a West Coast ridge and eastern CONUS trough leaving a locally flat flow in place across the Central Plains. As of this writing, the cold front has entered the far northwest corner of Missouri.
If skies were expected to remain cloud free, the confidence of widespread frost would be elevated across these SE GA zones, however mid and high clouds are expected to increase through the night as a mid/upper short wave trough approaches from the west.
630 PM EST Fri Nov 24 2017 High pressure will remain over the Carolinas through tonight then weaken Saturday. A dry cold front will approach from the northwest Saturday afternoon and cross our region Saturday night.
838 PM EST Fri Nov 24 2017 High pressure will remain just offshore of the mid-Atlantic through tonight. A cold front will cross the region Saturday afternoon and move east of the Chesapeake Bay Saturday night.
A cold front will move through the terminals later tonight (with FROPA generally between 05-07Z) bringing a northerly wind shift and a period of breezy winds. /issued 230 PM CST Fri Nov 24 2017/ Following a minor trough in NW flow tonight and an accompanying cold front, heights will amplify and trend more anticyclonic ahead of progressive ridging for the weekend.
It will be drier and cooler across South Florida tonight with low temperatures ranging from the upper 50s across the northwestern interior to the mid 60s across the east coast metro areas. /issued 328 PM EST Fri Nov 24 2017/ Dry and cooler air will continue to move into South Florida as a cold front continues to pull farther away from the region. There will not be a significant cold blast associated with this as most of the cooler air will remain off to the north. Saturday will remain dry across the region as high pressure builds back into the area.
With the assistance of some high clouds lingering this AM, lows were warmer than previously forecast, leading to a record setting day in terms of temperatures. As the cold front entered north central Kansas earlier this afternoon, compressional warming spiked readings into the lower 80s, while briefly dropping RH values into the upper teens to lower 20s. Embedded vorticity maxima rounds the base of the upper trough axis just behind the front, with short term guidance hinting at very light reflectivity developing towards central Kansas. A calmer, yet mild afternoon remains in store on Saturday with the modified cooler airmass settling into place.
Moisture remains limited, and high pressure will continue to slowly settle southeastward while weakening off the east coast of Florida.
Further west, about halfway between Nashville and Memphis, the cold front with this synoptic system is currently moving east.
Band of showers has formed ahead of approaching cold front this evening.
Extended the high risk of rip currents until 12z Friday. The surge of high pressure will increase winds late tonight and more Friday morning, but not anything too strong with winds gusty near the coast Friday. The high will shift rapidly to the east late Friday and onshore flow will return to the area. Thus, we will not see a big cool down for this front, especially near the coast (it will feel cooler over the northern areas especially Victoria Crossroads). Temperature forecast a blend of short-term and MOS guidance, closer to the cooler temperatures to the north especially Friday night.
/issued 252 PM CDT Thu Mar 29 2018/ An upper level trough was pulling away from us this afternoon, causing storminess for the MS Valley, and leaving us with cool northwesterly flow.
635 PM CDT Thu Mar 29 2018 201 PM CDT With the exception of lingering rain showers across far southeast portions of the CWA this afternoon, dry conditions are expected through the forecast period as high pressure moves southeastward across the mid-Mississippi River Valley. Drier SW return flow behind the departing ridge axis early Friday afternoon combined with daytime mixing should erode the residual clouds by early evening.
A ridge of high pressure aloft will maintain above normal temperatures through Friday.
Band of showers has formed ahead of approaching cold front this evening. with some scattered showers entering the northwest along the edge of the cold front.
conditions should lift back to VFR over the CWA with some passing high clouds and variable winds as high pressure moves through the region. Friday evening light winds should begin to return out of the southeast on the backside of the high pressure.
/issued 948 PM CDT Thu Mar 29 2018/ Cooler, drier air continues to filter into the region from the northwest in the wake of an upper level trough which continues to move through the region this evening. Sfc cold front has just about cleared our southeast parishes this evening and the post frontal pressure gradient should be enough such that we will keep enough of a northwest wind at the surface to keep temperatures from bottoming out too much. Even so, hourly temperatures are running cooler than hourly forecast temps, especially across our northwest zones so have lowered min temps tonight just a degree or two in a few locations.
1146 PM CDT Thu Mar 29 2018 It looks like the trof/weather system that has been affecting us for a while will finally lift out of the area the next 12 hours. With cloud cover holding in for much of the are overnight, have raised low temperatures to the warmer MAV levels.
950 PM EDT Thu Mar 29 2018 Low pressure will track northeast through eastern New York overnight and into northern Maine by Friday morning. A trailing cold front will push offshore Friday afternoon.
High pressure aloft along the west coast will begin to weaken Friday. This weakening of the high pressure will bring a mild westerly flow aloft to the Great Basin this weekend. The northwest flow aloft downstream from the west coast upper ridge will become more westerly as the ridge weakens on Friday.
Cold front moving through E TX/NW LA will continue to move through overnight, with N to NE winds picking up towards daybreak and the remainder of Friday. Sunshine has been working its way into the region this afternoon, but we do have another reinforcing cold front expected to move down across the area later tonight.
841 PM EDT Thu Mar 29 2018 High pressure will weaken as it moves offshore through tonight.
1156 PM CDT Thu Mar 29 2018 Upper level trough is finally beginning to move out of the region this evening with rain ending from west to east across the eastern Ozarks. High pressure moving over the area tomorrow will allow for a pretty day with light winds and temperatures in the upper 50s to around 60 for the afternoon.
At 00Z, a cold front stretched from northeast to southwest Alabama, with a line of showers and isolated thunderstorms well out ahead of it.
Tonights low temperatures will be in the lower 60s. SW winds will shift to the WNW late Friday as a cold front pushes across the waters bringing showers and thunderstorms.
530 PM MDT Thu Mar 29 2018 Water vapor shows long wave trof entrenched across the central CONUS. Distinct short wave trof crossing western/central SD has been responsible for some snow across much of the region today. A much different day expected Friday as a warm front lifts through the western Dakotas, producing gusty southwest winds and much warmer temps. Next clipper system crosses ND Friday night, sweeping a strong cold front through the region Friday evening.
Evening surface analysis had a 1008mb low over Kentucky with a trailing cold front across northeast Mississippi and across our northeast Louisiana parishes. This reinforcing cold front will continue south through the night and bring a chance of rain mainly to the eastern half of our CWA. There was clearing noted on satellite imagery in the wake of the cold front but some stratocu looks to move back in from the northwest later tonight. Morning lows will be cooler but still warmer than normal.
610 PM CDT Thu Mar 29 2018 Post-frontal stratus has been eroding today as a trough to the west is kicking off some light snow/rain showers in western Nebraska, but much of this precipitation will fall apart as it moves east as support dwindles.
High pressure will build over the region for the remainder of the week supporting a gradual steady warming trend. Afternoon high temperatures near 90 degrees will be common across the lower deserts late in the week. Temperatures continue a slow warming trend with 80s across most of the lower desert this afternoon. High pressure ridge off of Baja coast will slowly nudge its way into the region, pushing heights up and leading to the gradual bump up in temps which will begin to approach the 90 degree level by this weekend.
626 PM CDT Thu Mar 29 2018 /00z TAFs/ VFR conditions and temporarily breezy north winds prevail in wake of a secondary weak cold front that moved through today. /Issued 400 PM CDT Thu Mar 29 2018/ /Tonight/ Through this afternoon, large scale ascent associated with the upper trough has been displaced to the north this afternoon. Mostly sunny skies and temperatures in the lower 70s will round out the work week.
High pressure over the epac was ridging north into wa/or tonight.
/Issued 400 PM CDT Thu Mar 29 2018/ /Tonight/ Through this afternoon, large scale ascent associated with the upper trough has been displaced to the north this afternoon. Mostly sunny skies and temperatures in the lower 70s will round out the work week.
/issued 743 PM EDT Thu Mar 29 2018/ High pressure will dominate with dry, VFR conditions prevail through Friday night.
with some scattered showers entering the northwest along the edge of the cold front.
As the cold front continues to make its way off the coast this evening, wind speeds will increase to between 8-15 kts by morning and hold into the afternoon hours. /ISSUED 915 PM CDT Thu Mar 29 2018/ A weak cold front was crossing the area and at 900 PM, the front was located along a Jasper to Liberty to Giddings line. Cooler and drier air will filter into the region behind the front and morning low temps should fall into the 50's inland, mid 60's coast.
/issued 241 PM EDT Thu Mar 29 2018/ Pre-frontal trough/line of showers and thunderstorms has made some eastward progress this afternoon and is now entering western portions of AL. Both features will continue to push east overnight, with the pre-frontal trough beginning to impact the NW portion of the CWFA before sunset.
1140 PM CDT Thu Mar 29 2018 High pressure was building in from the Northern Plains this afternoon with sunny skies resulting across our area. High pressure will drift overhead tonight, providing mostly clear skies with low dropping into the upper teens to middle 20s. A weak mid-level trough ripple through north central WI Friday for a chance of a rain/snow mix mainly north of Highway 10.
1123 PM EDT Thu Mar 29 2018 Low pressure will track northeast through eastern New York overnight and into northern Maine by Friday morning. A trailing cold front will push offshore Friday afternoon.