Aikyam-Lab/Synoptic-Bench huggingface dataset:
Min temps will generally be in the low to mid 50s, except upper 40s over Okeechobee county and western (rural) Indian River and St Lucie counties as well NW Volusia/Northern Lake. On Saturday, high pressure ridge nosing down the eastern seaboard will produce a light north to northeast wind flow. Max temps will range from the lower 70s along the immediate Volusia coast to the upper 70s over the south interior (Okeechobee and adjacent western Treasure coast counties).
1212 AM EST Sat Dec 7 2019 A weak cold front will move through the forecast area overnight.
1043 PM EST Fri Dec 6 2019 Currently - A weak high pressure system across the Florida Peninsula is resulting in light north to northeast breezes across the forecast area. Aloft, the flow across the Keys is nearly zonal, with a very broad long wave trough aligned roughly over the Atlantic coast. Despite lack of ridging, stable conditions remain with ample warm dry air above a weakening inversion based around 900 mb. Short Term Update - A couple of impulses embedded within the southern stream over the extreme southeastern United States and nearby gulf and Atlantic waters and is acting to eat away at the nearby ridge. Weak ridging to our north, along with a mild cool air drainage off of the mainland will keep winds light out of the north to northeast.
Weak upper ridging over the Rockies and warmer air to our west will advect onto our region today with the upper ridge axis deamplifying as it reaches the plains states. Temps will trend above normal this afternoon in the warmer airmass with readings topping out in the 50s for highs. Slightly cooler air and more cloud cover Sunday should keep temps just below todays highs, but still nice with readings near or in the 50s and less wind.
The inverted trough does remain across the area, and could be the focus for showers on Sunday.
High pressure ridge axis to the northwest will slide southeast overnight, with light winds expected later tonight and into tomorrow morning. Some potential exists for localized freezing fog in the typically colder locations late tonight into tomorrow morning.
Current forecast looks on track as cooler/drier air continues to filter into the region.
312 AM EST Sat Dec 7 2019 Dry high pressure building into the Middle Atlantic States will ridge southward and into the forecast area today. The high will shift eastward and a warm front will develop along the Southeast Coast Sunday.
1128 PM CST Fri Dec 6 2019 The low post frontal stratus is forecast to move south of the area by early evening, leaving a mostly clear sky for the remainder of the night. Southerly winds on the west side of the high will advect warm air into the CWA Saturday afternoon, helping boost temperatures into the upper 40s and low 50s.
Issued by National Weather Service Gray ME 335 AM EST Sat Dec 7 2019 High pressure will build across the region later today through Sunday.
A surface lee trough is still expected to form tomorrow morning allowing for another breezy but otherwise pleasant day as highs stay in the low 60s. The lee trough will stay put through Sunday ahead of an advancing cold front.
Sunday will likely be a few degrees cooler than Saturday, as mixing will be weaker and H85 temps cool a few degrees.
Model visibility forecasts do not show any fog/freezing fog at this time. Low temperatures in the low to mid 20s. an upper level trough and cold front approach the area from the northwest during the day then across the area during the night. High temperatures look to reach the low to mid 50s and could be a few degrees warmer. Some spotty snow showers are possible mainly north of the interstate during the night as the trough moves overhead.
High pressure will dominate through the TAF period with widespread VFR conditions expected. Through this evening, a cold front will make steady progress southeastward across the state.
High pressure over the area will allow temperatures to moderate over the weekend as warm air advection takes place with southerly winds. Highs on Saturday will climb to the low to mid 50s with highs Sunday in the mid to upper 50s.
Dry high pressure continues to expand into the area so have gotten rid of the MVFR ceilings around GLS/LBX for now given the trend in the 00z model guidance coming in drier.
821 PM MST Fri Dec 6 2019 Although skies are clear this evening, high clouds are cresting an upper level ridge building over the northern Rockies and moving toward the forecast area. Broad surface trof over eastern MT/WY- western SD/NE with southwest flow across the area. Warm advection has begun and temperatures are cooling slowly, so lows will stay a bit warmer.
1234 AM EST Sat Dec 7 2019 Northwesterly flow and building high pressure will make for a cold start to the weekend. High pressure begins to exit the region Sunday, allowing warmth to infiltrate the area.
Skies have cleared across the area, although northerly winds and CAA will keep high temperatures 15-20 degrees cooler than yesterday. Increasing southerly winds, WAA, and clear skies through the day on Saturday will allow for above normal temperatures with highs in the low to mid 50s. Mainly zonal flow will continue Saturday night and Sunday ahead of a positively tilted trough moving in from the Southwest US, with southerly flow at the surface advecting higher theta-e into the region. Despite the low clouds, temperatures will warm into the mid-50s for much of the region, possibly a bit warmer if the stratus deck is thinner than expected. This leads to the development of a strong longwave trough over the eastern US.
351 AM EST Sat Dec 7 2019 Northwesterly flow and building high pressure will make for a cold start to the weekend. High pressure begins to exit the region Sunday, allowing warmth to infiltrate the area.
MVFR/IFR conditions, moving from west to east, after midnight due to rain and mountain snow as the next cold front moves in the area.
The flow will induce lee troughing across NM and give us moderate afternoon breezes on the Caprock. Temperatures should also rise a few degrees from yesterday with highs mainly in the lower 60s.
A quick temperature rebound into the 50s is expected today, as atmospheric thickness builds ahead of an approaching western CONUS trough. It will be rather breezy, especially west of the KS Turnpike, as High Plains lee troughing commences. If this occurs, it should remain all liquid, as temperatures will be well above freezing.
Consensus highs for this afternoon range from the mid 40s in southern IN to the lower 50s in southern KY. Due to high pressure off to the east and a strengthening Hudson Bay low, SW return flow increases early Sunday. A strong, +120kt 300mb jet part of a broad upper level trough will begin ejecting into the southern Plains on Sunday. Models indicate lee cyclogenesis over the western Central Plains as the trough advances eastward with very cold Arctic air in Canada being drawn southward.
1153 PM EST Fri Dec 6 2019 Quiet weather conditions are expected into this weekend as high pressure dominates. Lows tonight will drop into the low to mid 20s, with highs near 40 degrees Saturday, and in the upper 40s to near 50 degrees on Sunday.
1253 AM EST Sat Dec 7 2019 A cold front has moved across the region.
1132 PM CST Fri Dec 6 2019 After a chilly night with lows dipping into the lower to middle 20s across central Illinois, abundant sunshine will warm temperatures well into the 40s on Saturday.
1042 PM CST Fri Dec 6 2019 As high pressure translates slowly eastward across the Middle Mississippi Valley and into the Ohio Valley area tonight, light southerly winds will return from west to east across Kansas. Areas along the Flint Hills and eastward will see abundant radiational cooling and perhaps some patchy shallow ground fog in low-lying areas, but fog and low stratus will not be nearly as widespread as it was the previous night across the high plains region.
With high pressure overhead, anticipate a beautiful day for Arkansas with maximum temperatures rising into the 50s, and mostly clear to partly cloudy skies. Similar yet slightly warmer weather conditions are expected for Saturday night/Sunday morning, with lows in the upper 30s and lower 40s and highs in the upper 50s and lower to mid 60s.
On Sunday the surface cold front drops across the area, triggering a shift to northerly flow.
354 AM CST Sat Dec 7 2019 Dry and cool weather early this morning as a secondary cold front moves through the region. Temperatures are in the 50s and dewpoints will be decreasing thanks to the dry cold front. Sunday will be warmer than today thanks to the wind shifting from a northerly component today to a southerly component on Sunday.
942 AM EST Sat Dec 7 2019 A weak front just north of central Florida connects two areas of low pressure over the NE Gulf and SE of the Carolina coast this morning. These features will generally remain in place through today, with ridge building down the eastern U.
Canadian high pressure was directly over the area, allowing for clear skies and light winds. Light rain chances will increase Sunday night with the passage of a broad upper trough and cold front.
This is keeping us under clear skies with cirrus toward the Rockies ahead of an upper low off the Pacific coast. This will give us some breezy southerly winds to usher in warmer air, and with mixing heights around 925mb for the majority of the CWA, we can expect highs in the low to mid 50s across the area.
330 AM CST Sat Dec 7 2019 Warm air advection overspreading the region today as a southerly flow increases across the area with surface ridging moving east. There will be some cold air advection behind the aforementioned trough, so temperatures will be cooler on Sunday, with highs in the lower 30s north of Interstate 90, though still holding in the lower 40s along the lower MO River Valley and our far southern IA zones. Models continue to portray the better lift and moisture generally to the north of our area, so the higher snowfall amounts will remain north of Interstate 90 where 1 to 2 inches could accumulate.
930 AM EST Sat Dec 7 2019 High pressure will build across the region later today through Sunday.
A LLJ will develop overnight and with it will come warmer temps and low level moisture. Cirrus will begin to increase late Sun through Mon as a long fetch of upper moisture extends from the northern Baja into the midwest, with an elongated mid to upper trough axis swinging through the southern Rockies. Enough moisture and lift will be present near the Red River by late Mon behind the cold front, although it appears winter precip chances will remain low based on the timing of the coldest air.
A cold front will push through the area late tonight into Sunday morning bringing snow levels down to most valley floors.
High pressure is expected to shift eastward through the morning hours which will allow for a return of southerly low level flow to the region this afternoon. The result is warmer lows forecast for tonight and highs in the 50s/60s again Sunday.
Temperatures will be about 10 degrees cooler than yesterday, but low 70s are normal early December.
441 AM CST Sat Dec 7 2019 Warm air advection overspreading the region today as a southerly flow increases across the area with surface ridging moving east. There will be some cold air advection behind the aforementioned trough, so temperatures will be cooler on Sunday, with highs in the lower 30s north of Interstate 90, though still holding in the lower 40s along the lower MO River Valley and our far southern IA zones. Models continue to portray the better lift and moisture generally to the north of our area, so the higher snowfall amounts will remain north of Interstate 90 where 1 to 2 inches could accumulate.
426 AM EST Sat Dec 7 2019 A cold front has moved across the region.
642 AM EST Sat Dec 7 2019 Quiet weather is are expected through the weekend as high pressure dominates.
407 AM CST Sat Dec 7 2019 Clouds over much of the Mid-South early this morning, expect them to linger much of the day even as high pressure builds into area.
Light winds will become northeast 5-10 knots as high pressure wedges down the Appalachians today and tonight. The pressure gradient will begin to increase this afternoon and tonight between high pressure building east of the Appalachians and an inverted trough east of the state of Florida.
BSH On Sunday, a southern stream upper trough will move onshore over California before progressing eastward.
Tonight, with considerable moisture still lingering in the low levels, low clouds and patchy fog are expected again, with areas of drizzle not out of the question as well.
AEX and LCH are likely to be on the fringes of the higher moisture and are more likely to see alternating periods of VFR and MVFR. VFR expected to prevail area wide by this afternoon as some erosion of the low level cloud deck is expected. /issued 354 AM CST Sat Dec 7 2019/ Dry and cool weather early this morning as a secondary cold front moves through the region. Temperatures are in the 50s and dewpoints will be decreasing thanks to the dry cold front. Sunday will be warmer than today thanks to the wind shifting from a northerly component today to a southerly component on Sunday.
406 AM MST Sat Dec 7 2019 Quiet weather continues across the CWA this morning as the ridge axis moves east of the continental divide. A strong low pressure system currently approaching the west coast is expected to come onshore in northern California tonight. While dynamic forcing leaves us without much of any lift initially, the quick saturation combined with orographics is expected to start generating snow over the high elevations early Sunday morning.
Winds, from the south, will return by this afternoon, and that will bring warmer air into West Central Texas.
/issued 407 AM CST Sat Dec 7 2019/ Clouds over much of the Mid-South early this morning, expect them to linger much of the day even as high pressure builds into area.
High pressure to the north of the Quad State will keep conditions dry as we head into the weekend. As the high moves towards the east, winds will turn from easterly during the day to southerly overnight.
We continue with the High Wind Warning for those areas.
538 AM CST Sat Dec 7 2019 A rather pleasant weekend in store as broad ridge builds across the Plains and Upper Midwest today. The thermal ridge axis will also shift over the region by early Sunday with a nice layer of warm air between 900-700 mb.
924 AM EST Sat Dec 7 2019 A weak area of low pressure over the northeast Gulf is supporting some mid and high level cloudiness across the northern and central forecast area early this morning with even some showers noted on 88D returns over the northeast Gulf waters northwest of Cedar Key. After a cool start temperatures will continue to moderate with afternoon highs topping out in the lower 70s north, and mid to upper 70s central and south. Weak low pressure over the northeast Gulf will support northeast to east wind in the 5 to 10 knot range with slight seas the remainder of today with a weak onshore sea breeze component developing along the coast during the afternoon.
446 AM EST Sat Dec 7 2019 Quiet weather is are expected through the weekend as high pressure dominates.
Sunday will bring a continuation of Saturday, albeit slightly warmer.
Temperatures Sunday will likely be a few degrees cooler as cloud cover in front of the next system moves into the area. Enjoy the day, as a strong cold front is expected to impact the forecast area late Sunday night.
628 AM EST Sat Dec 7 2019 High pressure will build across the region later today through Sunday.
Scattered showers are expected to be near ECP and TLH in association with a weak area of low pressure over the northeast Gulf. A weak area of low pressure just offshore of the Florida panhandle will contribute to mostly cloudy skies across the area today with scattered showers across the southern half of the area.
The closed low is currently sitting at 130W this morning with one embedded disturbance moving into southern OR. Snow levels do drop slightly by early Sunday morning as the low moves over NorCal, with snow down to about 5500-6000ft.
318 AM CST Sat Dec 7 2019 A rather pleasant weekend in store as broad ridge builds across the Plains and Upper Midwest today. The thermal ridge axis will also shift over the region by early Sunday with a nice layer of warm air between 900-700 mb.
W-SW flow aloft will keep the focus of precipitation over the higher elevations today with scattered showers across the Snake Plain and much of southeast Oregon and far southwest Idaho through this evening.
The pressure gradient will begin to increase this afternoon and tonight between high pressure building east of the Appalachians and an inverted trough east of the state of Florida.
High pressure along the coast will move east this afternoon leading to a light onshore flow this afternoon and evening.
Mostly cloudy skies to persist areawide this TAF cycle as a weak, low-pressure system lingers offshore of the Panhandle. A weak area of low pressure just offshore of the Florida panhandle will contribute to mostly cloudy skies across the area today with scattered showers across the southern half of the area.
1122 AM CST Sat Dec 7 2019 Warm air advection overspreading the region today as a southerly flow increases across the area with surface ridging moving east. There will be some cold air advection behind the aforementioned trough, so temperatures will be cooler on Sunday, with highs in the lower 30s north of Interstate 90, though still holding in the lower 40s along the lower MO River Valley and our far southern IA zones. Models continue to portray the better lift and moisture generally to the north of our area, so the higher snowfall amounts will remain north of Interstate 90 where 1 to 2 inches could accumulate.
As of 1 pm, temperatures are a few degrees higher than at this time yesterday due to the warmer southerly winds. There will likely be some increase in mid and high level clouds tonight through tomorrow as upper level moisture associated with a short- wave trough to the north moves through.
345 PM EST Sat Dec 7 2019 High pressure should maintain dry weather through Sunday.
This feature, in combination with lingering moisture from a weak low-pressure system offshore from the Panhandle, will keep rain chances elevated for mostly our marine zones (30-50%) before shifting to our western waters.
1102 AM CST Sat Dec 7 2019 A rather pleasant weekend in store as broad ridge builds across the Plains and Upper Midwest today. The thermal ridge axis will also shift over the region by early Sunday with a nice layer of warm air between 900-700 mb.
/issued 924 AM EST Sat Dec 7 2019/ A weak area of low pressure over the northeast Gulf is supporting some mid and high level cloudiness across the northern and central forecast area early this morning with even some showers noted on 88D returns over the northeast Gulf waters northwest of Cedar Key. After a cool start temperatures will continue to moderate with afternoon highs topping out in the lower 70s north, and mid to upper 70s central and south. Weak low pressure over the northeast Gulf will support northeast to east wind in the 5 to 10 knot range with slight seas the remainder of today with a weak onshore sea breeze component developing along the coast during the afternoon.
109 PM EST Sat Dec 7 2019 High pressure will build across the region later today through Sunday.
An inverted trough off the southeast coast and strong high pressure building down the eastern seaboard will tighten the pressure gradient tonight and Sunday. Temperatures will continue to moderate with lows tonight ranging from the mid/upper 40s over se Ga to the low/mid 50s across ne Fl.
Lee troughing will continue through the rest of the afternoon with breezy southerly winds continuing. This will help to move the trof axis farther east through the morning hours. With the weak downslope winds behind the trof continuing, we should see highs above normal. Lastly, moderate afternoon relative humidities will keep any fire weather concerns on the low side.
High pressure will begin to exit the region Sunday, allowing warmth to infiltrate the area.
121 PM MST Sat Dec 7 2019 Upper level analysis shows a ridge axis translating eastward as warm air advection becomes further displaced to the east. Moist, upslope flow will result in a mixture of fog, freezing drizzle, and flurries by Sunday afternoon.
221 PM CST Sat Dec 7 2019 Quick zonal pattern across the CONUS early this afternoon with next upper trough entering the west coast. At the surface we have high pressure over western NY and low pressure in the northern plains, with southerly winds in between across the forecast area.
1214 PM EST Sat Dec 7 2019 Northwesterly flow and building high pressure will make for a cold start to the weekend. High pressure begins to exit the region Sunday, allowing warmth to infiltrate the area.
257 PM CST Sat Dec 7 2019 Latest 20z surface analysis shows high pressure over the Ohio River Valley. With southerly winds on the backside of the high pressure over forecast area. Southerly winds aloft on the backside of the surface/upper level ridge will advect warmer airmass into the forecast area.
Upper air analysis this morning showed a low amplitude ridge over West Texas with west-northwesterly flow over the region. At the surface, high pressure was centered over us and winds were generally light and variable. The upper level ridge will flatten during this period.
245 PM CST Sat Dec 7 2019 Current surface analysis places trough/cold front dropping across Manitoba into southern Saskatchewan, with high over the Ohio River Valley. For tonight, changes start to show up first over northern locations as the aforementioned cold front to the north drops south. The tricky part at this time is expected snow amounts as most global models bring the higher amounts further south, but higher resolution models are now showing a more northern solution, so to figure where the three to five inch amounts which would lead to an advisory continues to be troublesome.
130 PM EST Sat Dec 7 2019 Dry high pressure will continue to build into the region tonight. The high will shift eastward and a warm front will develop along the Southeast Coast Sunday.
Overnight lows will be around 5 to 8 degrees above normal tonight with lows ranging from the lower 30s across SWVA to the lower 40s down around the Chattanooga area. Highs will be in the low to mid 50s for most areas, which is near normal to a few degrees above normal. The next cold front to affect our area at that time will be located well west of here stretching from the central Great Lakes SWWD into the High Plains. Also with this return flow, was looking at the possibility of a mountain wave event, but wind speed aloft are only moderate and the wind angle is too parallel to the ridgeline for a good mountain wave event.
1150 AM EST Sat Dec 7 2019 Dry high pressure building into the Middle Atlantic States will ridge southward and into the forecast area today. The high will shift eastward and a warm front will develop along the Southeast Coast Sunday.
Showers associated with an upper level trough will diminish tonight as it moves east of the area.
540 PM CST Sat Dec 7 2019 Quick zonal pattern across the CONUS early this afternoon with next upper trough entering the west coast. At the surface we have high pressure over western NY and low pressure in the northern plains, with southerly winds in between across the forecast area.
420 PM MST Sat Dec 7 2019 Upper level analysis shows a ridge axis translating eastward as warm air advection becomes further displaced to the east. Moist, upslope flow will result in a mixture of fog, freezing drizzle, and flurries by Sunday afternoon.
Do expect a westward redevelopment of this low level cloudiness through the night as temperatures cool, but again eroding advancing through Sunday. Temperatures return to more seasonal norms tonight as a cool high pressure ridge eases into the area. Temperatures should return to above the norm for afternoon highs Sunday as high pressure advances east of the region and southerlies become reestablished. Significantly warmer temperatures then on tap for Sunday night lows with the return flow in place, while Mondays highs will be closing in on record territory.