Aikyam-Lab/Synoptic-Bench huggingface dataset:
Northerly winds will gradually veer to the southeast helping keep temperatures in the low to mid 50s in the east. However, with moisture lacking in the lower levels, even with relatively stronger southeasterly winds due to a tightening pressure gradient, did not feel confident enough to throw in any PoPs at this time. High pressure over the upper midwest starts the period dry with return flow out of the south increasing to near 20 kts over parts of the valley owing to some Venturi effect.
Storms potential push eastward through afternoon/evening hours as 850 mb trof sets up over south central Montana.
1138 PM CDT SAT AUG 6 2016 VFR conditions expected overnight as high pressure remains the dominant weather feature. Broad upper ridging progged to remain over the region, with deeper low-level moisture (+2-2.
Short range models including HRRR have additional convection developing overnight across the NE Gulf and moving toward Lake county during the late night hours ahead of a stacked low to mid level closed low near the eastern FL Big Bend. Upper level cyclone will remain quasi- stationary over the extreme NE Gulf of Mexico. CWA will remain in between these features and high pressure ridge across south Florida.
Large area of high pressure remains centered over South Central Canada and the Northern Plains. with strong ridging extending eastward into the Great Lakes Region. High pressure slides directly overhead Sunday night, resulting in excellent radiational cooling conditions.
S to SW flow will generally remain at 10-15 knots with seas 2-5 ft through tonight, then a further increase to 15-20 knots with seas 3-6 ft Sunday as pressure gradient tightens between High to the East and Low Pressure/Trof to the West and Small Craft Exercise Caution /SCEC/ headlines may be required.
Skies to remain clear within the lowest 5000 ft this evening, additional cloud funnel in from the northwest expected to remain above this level.
This will bring slightly cooler air to the forecast area.
The pressure gradient will be on the increase across western and central SD Sunday afternoon, in between this exiting high and nearing area of low pressure stretching from central MT to WY.
Shallow mid level ridging was noted over the Plains into the northern Rockies on morning upper air charts and latest RAP analysis. A couple of minor impulses were implied from water vapor imagery and RAP 500mb charts, one drifting through central Nebraska and another beginning to eject out of central Colorado and Wyoming toward the High Plains.
Surface based instability drops off rapidly in the cooler air to the east which will effectively end the threat of severe storms, but with copious moisture available and at least weak elevated instability expecting another wave of numerous to widespread showers/scattered thunderstorms to move west to east across the area. Upper ridge axis is forecast to strongly build northward during the day which should prohibit most if not all precipitation chances.
1240 AM EDT SUN AUG 7 2016 A cold front will push offshore this evening.
1143 PM CDT SAT AUG 6 2016 Water vapor imagery shows the persistent band of mid-level moisture continuing to advect up and over the high and central plains with persistent upper level ridging anchored across the southern plains.
612 PM CDT SAT AUG 6 2016 High pressure centered over Minnesota will build southeast across the Midwest this weekend.
1214 AM EDT SUN AUG 7 2016 Dry weather is expected under high pressure through early in the week. Dry weather is expected under building high pressure.
Will also add patchy fog in the forecast due to the low level moisture level. Tonight Through Sunday Night Cooler temperatures are over the area with overturning from thunderstorms and additional cloud cover.
On the plus side, ample cloud cover and widespread precipitation activity will keep temperatures on the cooler side, and finally closer to or slightly below normal high temperatures through the week.
540 PM MDT SAT AUG 6 2016 Scattered showers and a few storms have developed around the mtns this afternoon as moisture and instability have increased with warmer temps.
Tomorrow will see a slight downturn in convection as weak ridging builds in from the west.
Sunday appears dry with North Dakota in the dry sector and a warm front well to the north.
Went near CONMOS guidance which is showing values near or a few degrees cooler than observed last night. Expecting lows in the upper 40s across the Iron Range to the low 50s in the Brainerd Lakes area.
1005 PM EDT SAT AUG 6 2016 An upper level trough will move through Eastern Canada on Sunday.
758 PM EDT SAT AUG 6 2016 Large area of high pressure remains centered over South Central Canada and the Northern Plains. with strong ridging extending eastward into the Great Lakes Region. High pressure slides directly overhead Sunday night, resulting in excellent radiational cooling conditions.
725 PM EDT SAT AUG 6 2016 High pressure will slowly build into the region for the remainder of the weekend and into the early part of the work week. Convection near the southward moving cold front pulling away from forecast area with drier surface conditions moving into the region as evident by surface dewpoints in the mid to upper 50s in the northern forecast area. Didn't deviate much from guidance on overnight temperatures, which will be more seasonable with the drier airmass building in with the developing ridge pushing toward the great lakes. Strong ridging to build into the Great Lakes region.
937 PM MDT SAT AUG 6 2016 Scattered showers and a few storms have developed around the mtns this afternoon as moisture and instability have increased with warmer temps.
/Issued 317 PM CDT SAT AUG 6 2016/ Cold front has pushed south to near the Red River this afternoon with scattered showers/thunderstorms starting to develop near boundary.
Fog is always a possibility though under high pressure this time of the year. VFR conditions are expected through Sunday under high pressure. Quiet weather will persist over the next couple days under high pressure. The cool low level thermal trough will linger into Sunday so more CU development expected. Highs look to be in the upper 70s to low 80s with readings a smidge cooler near Lake Michigan due to onshore winds.
Broad upper ridging progged to remain over the region, with deeper low-level moisture (+2-2.
748 PM EDT SAT AUG 6 2016 Cold front looks to be situated across the central portion of the forecast area this evening with clearing to the north of the boundary. The cold front continues to slowly sag south into the Commonwealth and is pretty well defined at this time with the back edge of the cumulus and radar returns from near or to the south of the OH River. The drier air and cooler airmass will move into the northern section of the area tonight and into Sunday, but the drier air will be slower to move to locations further south. Models in generally good agreement through the upcoming week with upper level ridging over the eastern US.
In the low levels of the atmosphere, an Atlantic ridge of high pressure will extend across south Florida overnight. In the mid levels of the atmosphere, an area of low pressure will be located over the northeastern Gulf of Mexico tonight. In the upper levels of the atmosphere, an area of low pressure will move northward through the eastern Bahamas overnight.
Skies to remain clear within the lowest 5000 ft overnight, additional cloud funneling in from the northwest expected to remain above this level.
/issued 329 PM CDT SAT AUG 6 2016/ (Tonight and Sunday) Hot and dry conditions will persist across West Central Texas again Sunday, with high pressure dominating. An upper level ridge will remain across much of the Southern Plains through the upcoming work week, continuing the hot temperatures. The ridge is forecast to weaken slightly during the middle to latter part of the work week, possibly resulting in temperatures a degree or two cooler than is forecast for the start of the week.
908 PM PDT Sat Aug 6 2016 A deep and slow moving low pressure system will move into the area over the next few days. This low will bring cooler temperatures and the threat of showers and thunderstorms.
/issued 451 PM EDT SAT AUG 6 2016/ The major synoptic features across the region continue to be a trough of low pressure across the northeast Gulf. Current water vapor imagery indicates a slow Northwest drift of the upper level low currently.
Temps much cooler than previous nights and current forecast has good handle on low forecast for tonight. With high pressure well northwest of us, winds should remain northerly and light. High pressure centered over Minnesota will build southeast across the Midwest this weekend.
1043 PM MDT SAT AUG 6 2016 A series of upper level low pressure troughs in southwest flow will move over western and central Wyoming tonight through Sunday bringing increased clouds showers and thunderstorms.
627 PM CDT SAT AUG 6 2016 Continued VFR conditions this forecast cycle as upper level high pressure remains overhead. /issued 331 PM CDT SAT AUG 6 2016/ High pressure will continue to hang on to the area through tomorrow, though it will begin to ease just slightly across our western zones. It doesn't appear this ridge will give enough to allow the monsoonal plume to enter back into the region quite yet.
703 PM EDT SAT AUG 6 2016 A cold front will continue moving south of our area through tonight and usher in lower humidity. A small area of high pressure will lead to a warm but mostly dry Sunday.
Upper level ridge will be the main weather feature through the short term.
The trend of hot and dry weather will continue thanks to the upper level high pressure still parked over Texas. The highest heat index values will be concentrated in the corridor east of Interstate 35 and south of Interstate 10.
713 PM EDT Sat Aug 6 2016 A cold front continues to advance across the North Country which is triggering a few isolated showers mainly across Vermont this afternoon. Then cooler and more pleasant temperatures and humidities will return this evening and through the rest of the weekend. Min temps overnight should drop into the low to mid 50s, except around 60F near Lake Champlain. Sunday should be somewhat of a repeat of today with the 500mb ridge to our north dominating the weather pattern.
646 PM CDT SAT AUG 6 2016 Water vapor imagery shows the persistent band of mid-level moisture continuing to advect up and over the high and central plains with persistent upper level ridging anchored across the southern plains.
Cold front located just north of the mid state this afternoon.
Otherwise, main focus will turn to the strong upper low which will dig into the Pacific Northwest by Sunday evening.
/issued 627 PM CDT SAT AUG 6 2016/ Continued VFR conditions this forecast cycle as upper level high pressure remains overhead. /issued 331 PM CDT SAT AUG 6 2016/ High pressure will continue to hang on to the area through tomorrow, though it will begin to ease just slightly across our western zones. It doesn't appear this ridge will give enough to allow the monsoonal plume to enter back into the region quite yet.
924 PM EDT SAT AUG 6 2016 High pressure will slowly build into the region for the remainder of the weekend and into the early part of the work week. Cold front has made it to the Kentucky/Tennessee border this evening. Post-frontal air mass across the Ohio Valley is drier, with dewpoints in the lower to mid 60s across much of the CWA. Strong ridging to build into the Great Lakes region.
933 PM EDT SAT AUG 6 2016 A cold front will continue moving south of our area through tonight and usher in lower humidity. A small area of high pressure will lead to a warm but mostly dry Sunday.
734 PM EDT Sat Aug 6 2016 A cold front continues to advance across the North Country which is triggering a few isolated showers mainly across Vermont this afternoon. Then cooler and more pleasant temperatures and humidities will return this evening and through the rest of the weekend. Min temps overnight should drop into the low to mid 50s, except around 60F near Lake Champlain. Sunday should be somewhat of a repeat of today with the 500mb ridge to our north dominating the weather pattern.
Cold front looks to be situated across the central portion of the forecast area this evening with clearing to the north of the boundary. The cold front continues to slowly sag south into the Commonwealth and is pretty well defined at this time with the back edge of the cumulus and radar returns from near or to the south of the OH River. The drier air and cooler airmass will move into the northern section of the area tonight and into Sunday, but the drier air will be slower to move to locations further south. Models in generally good agreement through the upcoming week with upper level ridging over the eastern US.
Starting out the forecast period with clear skies, light east surface winds, and VFR conditions, as high pressure centered over the Tennessee River Valley continues to ridge down into the region. This high will move off to the east today, with Low pressure forming over western Texas and moving into the Southern Plains.
Continued good agreement in a stronger wave entering the High Plains Tues evening with resultant pressure falls allowing moisture to spread westward with a dryline sharpening through central OK.
high pressure will shift steadily east which will allow the WAA to persist over the region throughout the short term which will allow the temps to increase through tomorrow allowing the high temps to rebound into the 80s and 90s. The better sunshine amounts tomorrow due to the drier air will allow the high temps to reach well above climo for the end of February. The NAM and ECMWF forecast temps remain on the warmer side versus the GFS numbers. will go on the warmer side of the model temp guidance especially for highs.
Synoptically, we have a main upper trof dropping through the Pacific northwest today. Most of this will result in virga over the lower elevations most of the day, but also some snow showers over the high country. Models indicate a piece of energy slipping away from the main trof and tracking into our region by evening. The associated long wave trof then tracks east through the Rockies.
Some warmer air will also advect into the region during the afternoon, and should see afternoon temperatures about 10 degrees warmer today compared to yesterday. Any snow that does fall will likely not accumulate given warm ground temperatures and surface air temperatures that remain above freezing.
Expect generally light totals across the Valley overall, and potentially 4 to 8 inches of snow over the higher elevations of the Sierra.
Northeast winds 5 to 10 knots this morning become southeast thru the afternoon as high pressure moves into the Mid-Atlantic.
Chattanooga Airport, TN 56 40 58 52 / 10 0 70 70 Knoxville McGhee Tyson Airport, TN 53 36 58 50 / 10 0 30 50 Oak Ridge, TN 52 35 57 48 / 10 10 30 50 Tri Cities Airport, TN 48 31 57 43 / 10 0 30 40.
842 AM EST Sun Feb 26 2017 High pressure will build in today ending the flurries and snow showers.
Surface wise, a weakening cold front is aligned across south central Florida and the adjacent atlantic and gulf waters, with a formidable region of high pressure (1025 mb) centered over the Southeast United States. Plenty of insolation combined with winds veering to northeast to east will allow high temperatures to climb into the lower 80s in some island locations.
we should see a transition from NW to SE fetch in the lower boundary level.
A cold front that pushed through the CWA yesterday/last night was stretched across the Florida peninsula this morning. In addition, the cooler air has been a bit slower than expected so have increased lows this morning a few degrees, mainly across the eastern portion of the CWA. High pressure will dominate today allowing for clear, dry conditions across the CWA. High temperatures will be noticeably cooler than yesterday with highs in the mid 60s to lower 70s, more normal for late February.
840 AM EST Sun Feb 26 2017 High pressure will move in from the west today, then move offshore later tonight and Monday.
929 AM EST Sun Feb 26 2017 A nearly zonal flow remains in place aloft this morning while at the surface, high pressure is building over the southeast behind a cold front exiting the southern part of the forecast area. High pressure building in to the north will turn winds more easterly tonight, which will favor a wind surge back into exercise caution range. High pressure will then remain over the region through the next several days, with no other headlines expected after tonight.
a low pressure system from the northwest will bring periods of mostly light precipitation. a second low pressure system from the northwest will bring another round of precipitation with greater amounts possible across San Diego County.
The next chance for rain arrives late Monday as a warm front lifts north across the area, although this round will likely again contain little amounts of precip.
608 AM EST Sun Feb 26 2017 It'll be blustery and noticeably cooler today behind a departing cold front. A weak trough will cross the area later today and that may produce a few mountain snow showers. Low pressure passes to our north late tonight and Monday and will introduce warmer air once again to the region. The trailing cold front will cross the area late Monday. a surface cold front had just exited the coastline. Diminishing winds and clearing skies this evening as weak ridging takes hold. Any rain or snow showers with this boundary should be confined to the higher terrain.
644 AM EST Sun Feb 26 2017 Cool high pressure with critical RH will build into the region today, then shift offshore tonight and early this week, as a warm and moist air mass gradually builds from the Atlantic and Gulf of Mexico.
420 AM MST Sun Feb 26 2017 Weak upper wave dropping south through CO early this morning, but very little weather of note with it except for a few flurries over the higher peaks of the Sangres and eastern San Juan mountains. For today, wave moves south of the state by afternoon, leaving only a few flurries lingering over the higher peaks along the Continental Divide. Tonight, mid and upper level flow gradually turn more swly in response to upper trough moving into the Great Basin. It looks like an active start to the work week with warmer and quiet conditions as the week progresses.
A cold front will drop through the area late tonight through Monday morning.
Temperatures will be a little cooler today behind the boundary with the initial NW flow this morning. Overnight lows will be in the low-mid 60s for the Gulf coast and interior, with breezy east flow keeping the east coast in the 70s.
628 AM EST Sun Feb 26 2017 High pressure will move in from the west today, then move offshore later tonight and Monday.
Next compact wave in the broad 500mb trough expected to bring light snow into the west by late this afternoon into the evening.
Just above the surface, area 88-D VAD wind profilers show southeast to southerly flow in the lowest 3k feet AGL.
Low level winds are in the process of backing to the SW in response to the building ridge. Weak high pressure is over the region Monday. Highs ranging from the lower 30s north to the lower 40s southeast.
413 AM CST Sun Feb 26 2017 An upper trough over CA this morning levels an approaching upper trough will swing across AZ and NM today as a stronger trough farther north moves over the WA/OR coast.
/issued 413 AM CST Sun Feb 26 2017/ An upper trough over CA this morning levels an approaching upper trough will swing across AZ and NM today as a stronger trough farther north moves over the WA/OR coast.
Warmer weather is expected on Monday with highs generally in the 40s.
328 AM MST Sun Feb 26 2017 Overnight water vapor loop showed a broad trough across much of the Lower 48. Short wave troughs were located off the British Columbia coast, north-central CA, and north-central plains. Flow aloft backs from west-northwest to west-southwest during the next 24 hours as the next Pacific trough digs south across the northwest CONUS and eventually east through the Intermountain West.
530 AM EST Sun Feb 26 2017 High pressure will build in today ending the flurries and snow showers.
Look for warmer temperatures with lows in the middle to upper 30s.
As the next trough approaches cloudiness will increase tonight, producing milder temperatures overnight. By midday the 500 mb trough should be moving through the western Great Basin with increasing moist SW flow aloft over the forecast area. Monday night the surface front will continue to slide slowly south and east across the area and the 500 mb trough will move over UT.
647 AM EST Sun Feb 26 2017 Aviation There will be a chance of light snow across central and northern Lower Michigan today as low pressure tracks across the northern Great Lakes.
533 AM EST Sun Feb 26 2017 High pressure builds along the Eastern Seaboard today.
Warmer temperatures but quiet in the short term. While forecast soundings indicate the low levels to be quite dry, there is the possibility of a few sprinkles in the south with the wave moving through this afternoon. With a southwest wind, along with an increase in sunshine, temperatures will be warmer than yesterday. Afternoon highs should range from the lower 40s to around 50.
Satellite shows upper level trof dropping south about 40 mph off the Washington coast. Short range models in good agreement in bringing trof across the inland northwest overnight and Monday. Another short wave trof will move rapidly southeast across the area Monday night with another shot of snow. Snow levels are less than 1k, but with temperatures rising to above freezing during the day in the lower elevations, this should keep snow accumulations in check for the most part. Road/soil temperatures have rebounded and with a stronger sun shining through the clouds, roads in the lower elevations will be mostly wet or slushy during the day, but likely freeze at night.
up to the lower to mid 20s over eastern locales. H5 zonal flow over the region will give way to a transition to H5/H7 flow turning more SW out ahead of a trough coming off the west coast and into the Rockies. Overnight lows Sunday night will see a range of mid teens to the lower 20s.
Snow showers were more numerous near DLH with the weak short wave trough and frontal system. Higher total total values in the lower 50s toward 18z before tapering off from west to east later afternoon as the short wave trough pulls away. Will keep a diminishing chc of snow showers across the northeast this evening as the short wave trough departs eastward. What is left of the weak boundary Monday morning is lifted north as a weak warm front as upper heights build ahead of the next system approaching the area. Warmer temps expected on Monday.
942 AM EST Sun Feb 26 2017 High pressure builds along the Eastern Seaboard today.
The elongated upper trough that extends across southern Utah this morning will continue to shift southeast out of the area. The few snow showers that existed near the trough axis overnight have now mostly ended. As a result, expect a fairly quiet weather day as a more stable airmass settle into the area behind the trough. This combined with mostly sunny skies underneath a thin veil of cirrus advancing into northern Utah should lead to warmer temperatures today. The next trough is already moving onto the Pacific Northwest coast and will carve into Utah late tonight through tomorrow. Precipitation will be widespread with this storm, and all areas but the lowest valleys of southern Utah will likely see precipitation fall as snow given the cold northwest flow that develops behind the front.