Aikyam-Lab/Synoptic-Bench huggingface dataset:
141 AM EDT TUE JUN 28 2016 A cold front will move slowly across the area today and Tuesday. High pressure will bring a period of drier weather for mid week. Prefrontal sfc trof separates 70F dewpoints over the ridge and valley region of central PA from 58F to 60F dewpoints over the west central mountains this evening. Upper trof swinging into the eastern GLAKS is nudging a sfc cold front eastward which should reach the Lake Erie shore shortly. Slow moving upper trof/sfc cold front pushes into the northwest mountains in the pre dawn hours. Key point is most of the day the low-level temperature guidance is near and slightly above normal.
627 AM EDT TUE JUN 28 2016 High pressure will build over the mid section of the country as a cold front moves from the Ohio Valley to the east coast. An upper level trough of low pressure will pass east through the Great Lakes region today and tonight.
SHORT TERM (Today through Wednesday):High pressure continues to dominate the region aloft, stretching into Texas from the northwest. Moisture remains limited as well underneath the edge of the ridge, but the seabreeze will have just enough forcing to pop a few showers during the day.
A secondary but dry cold front will move across Indiana tonight and cooler air will finally arrive by Tuesday. It will be quite cool Tuesday and Wednesday as an upper trough digs into the great lakes and St.
348 AM EDT TUE JUN 28 2016 High pressure offshore will allow a more humid air mass to move into the region on a southerly wind. A slow moving cold front approaching from the west will bring scattered showers and thunderstorms through Wednesday.
Current water vapor imagery shows a high pressure ridge centered over the Western United States and Western Canada. Ridging builds in stronger late today into Wednesday across the area.
329 AM CDT TUE JUN 28 2016 The secondary cold front stretches pretty much along I-70 at 08z. Otherwise high pressure will build southward from the upper MS Valley today in the wake of the cold front. Highs today will be cooler than yesterday but have trended a tad warmer than the previous forecast. The high centered will continue to settle southeastward into IL tonight, and then move slowly into the OH Valley Valley by Wednesday night.
Short term models suggest that sfc-850 mb flow will gradually veer throughout the night a 500-mb trough axis advances southeastward through the region, and this may be sufficient to sustain this MCS for several more hours. Weak ascent associated with the 500-mb trough may be sufficient for a few sprinkles or patches of light rain in remainder of the region, and a 20% POP will be included for rest of the forecast area.
359 AM EDT TUE JUN 28 2016 A cold front will approach from the northwest through Wednesday, then stall across the area into the weekend.
345 AM CDT TUE JUN 28 2016 Mid-level ridge centered near 4-corners expected to maintain weak northwest flow into Panhandles through Wednesday night.
An upper level ridge will continue to bring hot and dry conditions to interior areas of Northwest California through Wednesday.
Overnight lows are generally expected to be in the low to mid 70s. The upper-level ridge responsible for our recent stretch of hot weather will be just about flattened out on Tuesday as troughing overspreads the eastern half of the country. At the surface, a decaying frontal boundary will be slowly moving into the Southeast on Tuesday, and will likely linger as a weak front or trough through at least the end of the week.
At the surface, the Western Atlantic ridge remains intact and stretches west into the Gulf of Mexico.
649 AM EDT TUE JUN 28 2016 A cold front will bring showers and thunderstorms to the region primarily this afternoon. Mainly dry and cooler weather will follow the front through midweek. Early this morning a surface cold front was moving through western New York as the associated upper level trof and jet dynamics was well to the west over the central lakes. On wednesday a weak secondary surface trof may trigger some light showers so will continue with slight chc pops for much of the area.
419 AM EDT TUE JUN 28 2016 Today through Wednesday: Broad upper level ridge centered over the Desert Southwest extends into the Southern plains and Southeast states during the short term period. Today through Wednesday the ridge remains in control through the region continuing the typical summertime weather pattern across South Florida. Wednesday night through Tuesday: The broad upper level ridge retrogrades westward into the four corners region and north Texas. An upper trough digs south over the East coast and Southern Plains bringing a cold front into the panhandle of Florida. As ridge builds across the west Atlantic and the Florida peninsula, a southwesterly flow sets up across the CWA. This high pressure will remain in control and bring an increase in moisture and rain chances into the area.
320 AM EDT TUE JUN 28 2016 High pressure will build over the mid section of the country as a cold front moves from the Ohio Valley to the east coast. An upper level trough of low pressure will pass east through the Great Lakes region today and tonight.
630 AM EDT TUE JUN 28 2016 A reinforcing cold front moves through today. Cooler for the remainder of the week. Weak cold front to push through the region today. Tonight high pressure builds into the region bringing cooler and drier air into the area. Previous discussion Upper level trough moving through during the short term, but behind the cold front moisture should be somewhat limited.
Upper-level ridge will remain over the area through Wednesday.
203 AM EDT TUE JUN 28 2016 High pressure will continue to move offshore tonight. A cold front will approach from the northwest late tonight through Wednesday, then stall across the area into the weekend.
322 AM CDT TUE JUN 28 2016 At H5 strong high pressure over desert southwest with ridge extending into western canada. Gulf of Alaska low sending waves underneath ridge over the Pacific Northwest. Trough over the Great Lakes. Ridge pushing east today into the northern and central plains with temperatures about a category higher over yesterdays highs. Precipitation continuing through the night with warmer over night lows in the 60s.
As a cold front moves into the area a light north to northeast east breeze will be common across the area this TAF period. The winds through out the column are N/NW now which is backing the ridge westward. /issued 408 PM CDT MON JUN 27 2016/ Subtle signs of the weakening upper level ridge still holding over east Texas as convection is being steered nearly clockwise with a gap in coverage along the I-20 corridor of NE TX/NW LA where the ridge axis has held firm. Upper ridge will continue a slow retreat to the west as the front slowly works in from the N/NE, aiding in the development of additional showers and storms overnight through Tuesday before gradually diminishing through Tuesday night.
222 AM EDT TUE JUN 28 2016 A cold front will move slowly across the area today and Tuesday. High pressure will bring a period of drier weather for mid week. Upper trough finally swings into the west during the day today. front(s) and the drier air to the west will move through as the upper trough kicks out the humidity. maxes today will run a little cooler than normal in the NW where the 8H temps will be down close to +10C this afternoon. The showers will probably linger in the east until midnight or a little later with the upper trough not in any hurry. Low clouds are possible in the NW directly underneath the cyclonic flow of the upper low which stalls briefly over western NY.
101 AM EDT TUE JUN 28 2016 Cooler air will continue to move into the area tonight behind a cold front. with highs on Tuesday only in the low to mid 70s. Cold front has just about cleared southern portions of the forecast area. Secondary sfc cold front now just entering the southern Great Lakes will push through the local area late this afternoon and early evening. Tonight into early Tuesday with feature the main surge of cooler air as trailing mid-level trough axis from parent wave lifting into Quebec swings through the Great Lakes region. Dry otherwise with high temps on Tuesday significantly cooler in the low-mid 70s.
A weak coastal trough sets up along the Lower Texas coast Sunday morning. One more day of very cold temperatures (at least for South Texas standards), with freezing temperatures everywhere but near the immediate coast, and that may only be in a few locations. Sunday night temperatures are tricky, with some low temperatures near the coast probably not too far away from the highs on Sunday.
900 PM MST Sat Jan 7 2017 Warm advection light snow has spread across the higher mountains. That will likely lead to stronger winds than earlier expected tonight already, so boosting those up with gusts reaching 60-70 mph in wind prone areas of the higher mountains and foothills.
Another cold night in store but with less wind as the high pressure ridge settles into the region. A weak coastal trough sets up along the Lower Texas coast Sunday morning.
502 PM EST Sat Jan 7 2017 Low pressure will move northeast from the New Jersey coast and reach Nova Scotia tonight. Strong high pressure builds into the region tonight through Sunday night.
726 PM EST Sat Jan 7 2017 Low pressure will move northeast from eastern Long Island and reach Nova Scotia overnight. Strong high pressure builds into the region tonight through Sunday night.
Snow showers are possible tonight into Sunday morning with the passing of an upper- level disturbance, mostly confined to the ridges and areas north of Interstate 80.
We expect I-80 between Laramie and Cheyenne to get pretty strong as well, and with models showing at least a modest stable layer over the summit we felt the potential was strong enough to add the southern Laramie Range, and adjacent foothills to the High Wind Warning.
Winds will be light and variable, or calm, at most sites overnight as high pressure moves through the state. But expect a SSE wind at all terminals by 18z Sunday as said high pressure moves east of Arkansas and southerly winds resume.
An increasing pressure gradient due to a developing lee side trough will help strengthen winds to 10 to 20 knots out of the southwest before sunrise. Today will be the last of temperatures well below average for the next several days as winds will shift to southwesterly advecting warmer temperatures into the region.
613 PM EST Sat Jan 7 2017 Snow ends tonight as low pressure well southeast of Long Island tracks into the Canadian Maritimes on Sunday.
Minimum temperatures in the low 30s expected over northern Lake and interior Volusia Counties where a Freeze Warning is in effect thru early morning Sunday. The lower cloud cover continues to slowly erode from the northern interior southward. Breezy NW/N/NNE winds up to 15-20 knots with gusts 22-25 knots will generally prevail behind the cold front into tomorrow.
/issued 229 PM CST Sat Jan 7 2017/ Another cold night expected tonight, but quite a bit warmer than last night.
950 PM EST Sat Jan 7 2017 Snow ends overnight as low pressure well east of Long Island tracks into the Canadian Maritimes on Sunday.
In the low levels of the atmosphere, a large area of high pressure over the southeastern United States will build southeastward down the Florida peninsula overnight. In the mid to upper levels of the atmosphere, a trough of low pressure will progress eastward across the Florida peninsula tonight.
Chattanooga Airport, TN 12 33 18 42 / 0 10 10 10 Knoxville McGhee Tyson Airport, TN 7 26 14 39 / 0 10 10 10 Oak Ridge, TN 7 28 14 39 / 0 10 10 10 Tri Cities Airport, TN 3 22 9 36 / 10 10 10 10 NC.
So opted to nudge the forecast towards the warmer short range model consensus. But with clear skies and lighter winds as high pressure passes to the north, do not want to fully come back up to that consensus number yet as this would allow for continued strong cooling. These counties would likely not strictly meet the hard freeze thresholds if tonight ends up warmer than forecast.
526 PM CST Sat Jan 7 2017 High pressure at the surface centered over Texas has brought our winds around to a southwesterly direction which will all a warming trend to begin.
423 PM CST Sat Jan 7 2017 At the sfc, high pres ridges fm the mid ms valley southwest into TX. A trough axis extends south of low pres over Quebec, crossing the eastern US, with ridging upstream west of the Rockies.
/ISSUED 351 PM CST Sat Jan 7 2017/ North Texas remains under northwest flow aloft with an upper level ridge to our west and a trough to our east.
For tonight, high pressure ridging will slowly shift east but will continue to dominate the area through most of the night.
Northwest upper flow continues across the Central Plains as a ridge builds into the Rockies. Little to no snow cover has diminished today as temperatures remained below freezing in the 20s. Sunday will see increasing warm advection through the day as southwest flow develops in the low levels. Highs Sunday will range from around 30 along the Highway 36 corridor to the mid 30s along and south of I-70.
612 PM EST Sat Jan 7 2017 Generally VFR flight conditions expected throughout the forecast period with high pressure building in from the west.
901 PM EST Sat Jan 7 2017 Snow ends overnight as low pressure well east of Long Island tracks into the Canadian Maritimes on Sunday.
Low temperatures will range from the upper 20s far north to the lower 40s along the southwest coast and this combined with the northerly winds will lead to wind chills in the upper teens to lower 30s and thus the Wind Chill Advisory looks on track. However, portions of Hernando and Sumter could fall to around or just below freezing also, but should only be for an hour or so and not the necessary two or more hours over a large area. However, the breezy north to northeast winds will continue to make it feel cooler.
The freezing level is fairly high 10kft at KVBG. Rain in the lower elevations adjacent in the San Joaquin Valley will be heavy at times through at least this evening. The ridge amplifies northward shifting the fetch of moisture toward N CA. A cold front approaching from the northwest will bring a southward shift of the atmospheric river Sunday evening.
/issued 423 PM CST Sat Jan 7 2017/ At the sfc, high pres ridges fm the mid ms valley southwest into TX. A trough axis extends south of low pres over Quebec, crossing the eastern US, with ridging upstream west of the Rockies.
Looks like mid state will stay totally clr tonight per sfc ridging influences and dry nwly flow aloft, so addressed that in grids.
Primary change was to increase cloud cover for remainder of this morning and early afternoon across Gulf waters where cooler airmass spreading over warm SSTs is aiding in cloud development.
A cold front moving across the Southern Appalachian Region this morning will continue to keep low clouds and patchy light rain or drizzle in place for much of the morning and into the afternoon.
Latest obs from around the affected areas showing upper 30s to the lower 40s. Rest of the forecast unchanged as CWA will see filtered sunshine and highs in the lower to mid 70s. Early morning WV imagery and RAP analysis shows large scale ridging building across the western US into the plains, with NW flow over the Central High Plains. At the surface, high pressure has slid east of our CWa towards the southern Missouri River valley. Lee trough has redeveloped and southerly surface gradient is in place over our CWA. There is still enough time for winds to drop off and temps to quickly fall to the lower 30s across our entire CWA due to mostly clear skies and Tds in the 20s to lower 30s.
Some of us may wake to some patchy frost in the cooler locations.
The cold front that moved through our area yesterday was moving east of the Appalachian Mountains this morning. An upper trough axis was located over east TN. A high pressure system was sitting across the plains, and will move in during the next 24 hours with crisp fall weather. Temperatures will reach the lower 60s for most areas, while clouds hold temps in the 50s for the Upper Cumberland.
This high will move off to the east by Saturday, allowing southerly winds to return.
Some thin cirrus in advance of a low amplitude upper trof moving along the northern tier of the CONUS will spill into parts of eastern Kansas early today on the northwest flow aloft. Otherwise, the upper ridge building over the Rockies will shift eastward across the Plains through Saturday, providing even warmer temperatures over the weekend.
Mid level trough was progressing into the Ohio Valley region this morning, with northwest flow in its wake across the middle of the country. Farther west, upper ridging was noted over southern California and Arizona.
A cooler and drier airmass will continue to advect into the area in the wake of yesterday's front. Went on the cooler side of guidance toward bias- corrected MOS forecast lows. Some of the typically cooler pockets in the CWA, such as Winona/Eupora area and TVR, could slip into the upper 30s by tomorrow morning.
A cold front was moving through northwest GA at this time and will continue moving rapidly east through the state today. A strong upper level trough sweeping through the state later today and tonight with building high pressure will force very cool and dry Canadian air into the state. Breezy conditions will prevail today over the forecast area as the high pressure builds over the state. the lowest relative humidities will range from 30 percent over central GA to around 50 percent over north GA.
Overnight lows ranging from the low 40s north to mid 40s inland from the coast, around 50 close to the coast.
627 AM CDT FRI OCT 21 2016 High pressure and clear skies will lead to VFR conditions through the period.
and Saturday An upper trough will exit the area this afternoon, but the upper flow will remain northwest and cyclonic through tonight. Saturday should be partly sunny and a little milder as weak upper ridging approaches and low level warm advection increases.
/issued 325 AM CDT FRI OCT 21 2016/ Cold front is now pushed well into the gulf with good cold air advection continuing across the forecast area this morning. Through the weekend pattern will be influenced by progressive trough going through the eastern U. followed by a low amplitude ridge.
After a cooler, blustery day, winds should diminish after sunset and decouple. Ridge building will continue across the central and southern Plains into the Southeast by Saturday with northwest flow aloft prevailing. Meanwhile, on Saturday, temperatures will once again be about 20 degrees cooler than the past few days with daytime highs in the 60s due to the cold start and slower modification of the airmass. Because of this movement of the high pressure system, a southerly fetch in conjunction with a sunny sky will bring weak warm air advection back across the TN Valley. This will yield warmer daytime highs, in the low to mid 70s.
Near perfect day to end the work week as a ridge aloft moves overhead and our airmass continues to moderate with mostly sunny skies.
Temperatures will cool off to closer to normal by this weekend as high pressure currently over the West Coast moves to the east.
Snow levels will vary between about 6000 and 8000 feet MSL throughout the period, with the lowest (highest) snow levels near Glacier Park (the Idaho border and Yellowstone Park).
513 AM MDT Fri Oct 21 2016 Early morning WV imagery and RAP analysis shows large scale ridging building across the western US into the plains, with NW flow over the Central High Plains. At the surface, high pressure has slid east of our CWa towards the southern Missouri River valley. Lee trough has redeveloped and southerly surface gradient is in place over our CWA. There is still enough time for winds to drop off and temps to quickly fall to the lower 30s across our entire CWA due to mostly clear skies and Tds in the 20s to lower 30s.
1033 AM MDT Fri Oct 21 2016 A flat ridge of high pressure over the Mountain West will continue to bring sunny skies to the region today. Strong solar insolation will efficiently warm dry soils which then readily transfer that heat to the lower atmosphere. This process will bring slightly warmer than normal conditions to the area during the afternoon. Dry weather will persist for the weekend as high pressure remains in control.
500mb ridge will be overhead through Saturday. The warm up begins today, with highs around 10F warmer than yesterday.
An upper-level trof axis will pull further east of the area, with the flow trending neutral by later today. At the same time, high pressure will begin to build into the area at the surface. While quiet conditions are anticipated, it will be several degrees cooler than normal, with daytime highs in the 50s and nighttime lows in the 30s. In the interim, very quiet conditions as we will be under the influence of high pressure much of the time.
The cold front just passed through Troy and the dry air mass has shut down any shower development along the front. The clouds will move out quickly this morning as the low level trof shifts quickly eastward and drier air advects into the area.
Perhaps a degree or two warmer than yesterday with afternoon highs from the upper 40s to lower 50s.
1154 AM CDT Fri Oct 21 2016 High pressure will continue to build into the Mid-South today. fans of Fall will finally get a few days of near to slightly cooler than normal temperatures, along with clear skies and northerly breezes. Early this morning, temperatures are mostly in the low to middle 50s. Afternoon highs will be in the low to middle 60s across the region. although winds may make it feel slightly cooler. Memphis and most of the Delta Area is expected to cool into the low to middle 40s with temperatures as low as the middle 30s in West Tennessee near the Tennessee River.
Weather map analysis this morning indicates that the strong cold front has made passage across the entire area with the boundary continuing east and south, from the southeast into the northern gulf respectively. For temperatures, strong cool air advective processes has kept late AM temperatures in the lower to mid 60s interior with mid 60s coast. Overnight lows ranging from the low 40s north to mid 40s inland from the coast, around 50 close to the coast.
By late day the line should start shifting south and east as upper low approaching and is expected to be east of the area by Saturday.
Slightly warmer today as upper ridge amplifies over us. Surface cold front to our northwest will bring light rain to Baker, Adams, and Valley Counties tonight and/or early Saturday morning. Drying and a little cooler Saturday behind the cold front.
Early this morning some very light isld-sct showers were present in the base of the upper trough pushing through the Ohio Valley region. Mostly cloudy conditions look to remain through much of the day although locations west of I-65 will start to see some sunshine by the afternoon hours as the low cloud deck begins to diminish.
High pressure will remain over the region and slowly weaken through Saturday resulting in mostly dry weather and gradually cooling temperatures.
AFTERNOON UPDATE: Changes to the forecast were first focused on raising temperatures slightly in the hourlies as temperatures were a bit warmer this morning than originally anticipated. THis is partially due to northeast Montana being stuck in the warm sector of a closed low over southern Saskatchewan at the normal diurnal minimum time with a weak downslope wind. This afternoon through this evening, a broad ridge of high pressure will push through the region giving NE Montana a very nice and comfortable autumn day. Late tonight, the ridge over our region becomes replaced by SW flow aloft and better chances for more organized rain showers through late Saturday night. Temperatures are expected to remain above freezing. An upper ridge will be building over the northern plains through the weekend, opening the region to southwest flow aloft.