Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 327 PM CDT WED JUN 8 2016/ An upper level high pressure ridge will continue overhead tonight and early Thursday, while a slow moving upper trough will dig southeast to western Kansas and the western panhandle and south plains by late Thursday. RMcQueen The weak and slow-moving upper trough (currently moving through the central Rockies) discussed in the short term is projected to emerge across the southern High Plains late Thursday night before stalling out somewhere nearby through at least the first half of the weekend.
/EXTENDING SLIGHT CHANCE POPS NW THIS EVE/ Satellite, radar and VAD wind data suggests the upper low center is between Cotulla and Hebbronville early this evening. Models show the upper low to pivot and shift NE through Thursday morning, so will avoid changes outside the first period. Upper air analysis this morning showed a large amplitude ridge over the western half of the country with a weakness underneath it along the gulf coast. At the surface, there was a trough near the coast and high pressure over east Texas. The upper level weakness under the ridge will remain along the Texas coast.
/ISSUED / Messy pattern remains in place across se'rn TX with weakening mid level trough along the coast keeping mid and high level clouds in place. This feature will linger for another day or so before larger mid/upper level ridge begins to become more established across the srn plains. Although large scale ridging begins to take hold by the end of the week and into the weekend, the airmass will become quite moist with PWs increasing to around 2".
/issued 340 PM CDT WED JUN 8 2016/ Mid-afternoon sfc analysis shows high pressure in place across the Ohio Valley. ridging swd and maintaining a light and somewhat variable flow across the forecast area.
Winds will remain light Thursday but turn SW as the lee trough develops during the afternoon. the short term will feature rising heights aloft, as a large upper level ridge builds across the central CONUS Fri-Sat.
This moisture combined with a stationary trough axis across the central peninsula and eastern Gulf, a divergence flow aloft and a vort max lifting slowly northeastward from the Keys across the southern Florida peninsula through Thursday will keep rain chances in the forecast across central and southern portions of the forecast area, especially across Southwest Florida tonight through Thursday where some locally heavy rainfall amounts and highest rain chances will reside. Broad upper/mid level ridging will be covering the southern US late this week, while a slow moving trough lingers over New England.
/issued 328 PM CDT WED JUN 8 2016/ Warmer temps in store for the Midsouth for the latter half of this week. A broad upper level height ridge over the western U. Northwest upper level flow over the Midsouth will transition to westerly and weaken considerably under the encroaching upper level ridge. Warmer overnight minimum temps will prevail, along with afternoon heat indices approaching 100 degrees.
604 PM CDT WED JUN 8 2016 A strong ridge to the west will keep the skies mostly sunny for the next few days. Rain chances are minimal for the most part as a weak low pressure system in Southeast TX will keep the Gulf of Mexico cut off.
Currently, High pressure ridging and axis will continue to dominate this afternoon. The main weather feature is an upper low and trough currently moving across the Pacific Northwest into western and north central Montana.
/Tonight/ Warm advection underway across Iowa on backside of retreating high pressure. With focus of storms to the north overnight, much of the rest of the forecast area will see little threat for rainfall and much warmer readings tonight as warm sector moves into the state. /Thursday through Wednesday/ Warm sector will have expanded through much of the state on Thursday with temperatures climbing into the lower 90s in most locations.
824 PM EDT WED JUN 8 2016 High pressure will maintain dry and cool weather through Thursday.
804 PM EDT WED JUN 8 2016 High pressure will build into the area from the west tonight through Thursday bringing drier and cooler weather to the region.
(Issued 220 PM CDT WED JUN 8 2016) A large ridge axis at surface and aloft continues to build southeast through the Tennessee Valley region this afternoon. Temps across the area ranged from around 80 degrees in our Tennessee counties to the lower 80s across north Alabama. Under the dome of high pressure, temps will fall to comfortable levels again tonight with overnight lows ranging from the mid to upper 50s.
a ridge was over the Rockies but a closed low was across WY. Thermal ridge at 700 mb was to our west. Highs Thursday should be mostly in the lower 90s. Best focus for widespread convection both tonight and Thursday night will be along and northeast of the 850 mb warm front.
High pressure aloft will shift east as a storm system enters the Pacific Northwest late in the week.
Gosselin Upper heights should rise thru the end of the week as a substantial ridge becomes established over the cntrl CONUS. Guidance appears to be a touch cooler but still expect highs from the mid 80s across sthrn IL and SE MO to near 90 across cntrl and NE MO into w cntrl IL.
/Issued 448 PM CDT WED JUN 8 2016/ Not much for changes to this forecast package as models continue to do well with the pattern of the upper level ridge sandwiched between a low on each coast.
Surface dewpoints range from the mid 40s to the lower 50s F ahead of that activity, yielding SBCAPE less than 500 J/kg per the SPC mesoscale analysis, so we don't expect much if any strength to that activity. As the h500 ridge moves over the northern plains Thursday, very warm temperatures are expected across west and central North Dakota. By Thursday afternoon thunderstorms are expected to form along a weak cold front moving into western North Dakota that will finally break the cap.
602 PM CDT WED JUN 8 2016 Deep ridging is currently moving across the northern Rockies this afternoon and will continue to cross into the northern and central Plains through the latter half of the work week.
High pressure over the central United States will be replaced by a warm front forecast to be from Indiana to the north plains by late Thursday.
High pressure has shifted east of the area. High pressure will begin to slide off to the northeast of the state tonight which will allow a very meager return flow pattern to creep back into Arkansas.
Surface dew points are in the lower to mid 60s today, but over the next few days, those dew points will be a bit closer to 70. As the low level moisture increases, the afternoon heat index values will steadily increase to the mid 90s by the end of the week and weekend.
911 PM PDT WED JUN 8 2016 Cooling trend through this week as a trough approaches. Cyclonic flow aloft continues over the region and cooler temperatures are expected thanks to a couple of low pressure areas.
Issued by National Weather Service Flagstaff AZ 926 PM PDT WED JUN 8 2016 An approaching area of low pressure will bring an increase in southwest winds on Thursday along with continued hot and dry conditions.
Winds light and variable through most of the night becoming southerly 8 to 12 mph by morning as today's high pressure moves off to the east and a pressure gradient develops over the area. Lows will be up considerably from the previous night, with minimums reaching the low 60s west of I-57 and the upper 50s to the east. High pressure remains dominant over Central Illinois this evening and into the overnight hours. Warm southerly winds pick up on the back side of ridge later tonight. Upper level ridging from the High Plains into the Canadian Rockies will flatten a bit, but at the same time, will build toward the Midwest.
638 PM CDT WED JUN 8 2016 At H5 large ridge over the western and central CONUS with several waves rounding the ridge in Canada and moving through the northern plains. Closed low moving through Pennsylvania. The upper level ridge will strengthen further, with temperatures continuing to rise. Main feature will be ridge over the central CONUS through the weekend. Trough moving through the northern plains Thursday evening.
1130 PM CDT WED JUN 8 2016 A strong ridge to the west will keep the skies mostly sunny for the next few days. Rain chances are minimal for the most part as a weak low pressure system in Southeast TX will keep the Gulf of Mexico cut off.
On the synoptic scale today, the large scale upper tropospheric ridge was centered across the Rockies, extending well into Canada. There was some flow sneaking in through the ridge, with a fairly perturbed flow over the Central Rockies. A lee trough was deeper today across Colorado in response to this feature, leading to stronger surface winds. A warmer start to the day versus the past couple days will allow afternoon temperatures to reach the lower 90s over much, if not all of western Kansas. Lee trough convergence and terrain features will lead to surface- based convection west of our region, mainly over the Raton-Johnson Mesa, Palmer Divide, and Cheyenne Ridge. The probability of severe weather will be very low given the paltry mid-upper level winds and dewpoints just east of the lee trough axis in the lower to mid 50s.
937 PM EDT WED JUN 8 2016 A clear night is expected across the eastern Tennessee Valley and Southern Appalachian region with high pressure building in from the west. which has ushered in some cooler and much drier air. Chattanooga Airport, TN 59 88 62 93 / 0 0 0 0 Knoxville McGhee Tyson Airport, TN 55 84 59 89 / 0 0 0 0 Oak Ridge, TN 54 85 59 90 / 0 0 0 0 Tri Cities Airport, TN 48 81 57 86 / 0 0 0 10.
areal coverage of convection during the day Thursday may be less than what we saw today as instability values are prog to be a little lower with H7 thermal profile prog to be 1 to 2 degrees C warmer /aka stronger capping/.
903 PM EDT WED JUN 8 2016 High pressure will maintain dry and cool weather through Thursday.
This moisture will stick around for a few days as another strong high pressure area develops over the state. By the weekend, a trough will move thorough southern California, eventually ushering in much drier air from the west.
An upper trough lifts well to the northeast of the fcst area tonight and Thursday with slight ridging developing aloft. a high pressure ridge will be building in from the north. With ridging sfc and aloft. Lows tonight will range from the low/mid 60s inland to the low/mid 70s at the coast. in the low/mid 90s over all of the interior away from the coast.
/issued 240 PM CDT WED JUN 8 2016/ Some showers/storms that develop in the high plains this afternoon/evening may move into northwest OK early Thursday.
By Thursday evening the high will exit to the east, allowing for a warming trend and unsettled weather towards the weekend.
807 PM MDT WED JUN 8 2016 Sct showers and tstms continue over the ern plains with widely sct activity over the higher terrain as a weak upper level trough resides over the area. A weak upper trough will remain over northeast CO this evening but the QG associated with this feature in nearly neutral. increasing subsidence in the mid levels as a ridge of high pressure builds over the state. It will be warmer but increasing subsidence will likely limit the thunderstorm development in the aftn. Will keep the mention of tstms Thursday aftn confined to the higher terrain.
627 PM CDT WED JUN 8 2016 Tonight, a weakening perturbation tries to make its way east within the upper ridge and may bring some shower/thunderstorm activity into the CWA, but this will mostly likely die in our western CWA as advertised by most short term models, so not looking for a lot of precip potential. Thursday will heat up as the upper level ridge builds. We should have at least a few days with highs in the 90s, thanks to the ridge.
An upper level trough is invading the west coast which is beginning to break down the ridge that has been responsible for the higher than average temperatures over the past week. Upper level ridge remains over the Western United States this afternoon. Ridge axis will begin to shift east from the Intermountain West to Northern Plains over the next few days, putting central California in between a ridge and an incoming Pacific longwave trough with onshore flow.
925 PM EDT WED JUN 8 2016 High pressure over the Ohio Valley will build into central NC through Thursday.
In addition, a cold front is moving through the CWA. This front extends from the West Central Mountains to the Lower Treasure Valley to near Burns. Temperatures tomorrow are still expected to be much cooler than today, with highs in the lower elevations in the 80s, while the mountains see highs in the 60s to 70s. Surface winds southwest 10-15kts shifting to the northwest behind a cold front.
/issued 238 PM CDT WED JUN 8 2016/ Broad upper level ridging is over all the conus except the Pacific Northwest and the New England/east coast states. There is also a minor trough over the Four Corners region. Convection is already developing and expected this afternoon across areas generally west of the Upper Trans Pecos in and around the higher terrain. Therefore, an isolated strong storm or two in the higher terrain of West Texas and southeast New Mexico cannot be ruled out this afternoon and early evening.
An upper ridge over the Atlantic will reach across the Caribbean and eastern Gulf region overnight. high pressure near the Great Lakes sprawls down to the Gulf coast. a weak trough resides across central FL. and Atlantic high pressure ridges across Cuba to the Yucatan. the loss of daytime heating and a subtle shift southward of the trough will allow rain odds to decrease some and to begin to move out of the area. a trough of low pressure will reside across central FL and the adjacent Gulf waters through the end of the week with benign winds and seas.
A cold front continues to move across far northeast Oregon and southeast Washington this evening but will be exiting into Idaho in the next couple of hours. The upper level trough off in the Gulf of Alaska willmove closer to the Pacific Northwest on Thursday with a closed low off the coast of Washington by afternoon.
957 PM EDT WED JUN 8 2016 High pressure will build in from the west tonight and persist through the end of the week.
723 PM EDT WED JUN 8 2016 Another quiet day across Upper MI as low-level ridging drifts across the area. While some guidance is showing temps falling well into the 30s across the central and east, passing clouds should limit the lowest temps to the typically colder locations with sandy soil across the interior east half. Dry air over the eastern UP along with lingering low level ridging during the evening will allow temperatures to cool into the lower 40s over the east. Increasing pressure gradient and southerly winds over the west will keep temperatures milder in the lower 50s.
814 PM EDT WED JUN 8 2016 High pressure moving into the area this evening will provide mostly clear skies tonight.
918 PM EDT WED JUN 8 2016 High pressure from the Mississippi Valley will move east across the area Thursday.
/issued 324 PM CDT WED JUN 8 2016/ High pressure centered over southern Illinois at early afternoon with the ridge axis to near Lake Charles. With the exception of lower Plaquemines Parish, all sites have warmed into the lower and middle 90s this afternoon. The Illinois high pressure will slide slowly eastward over the next couple of days, gradually turning the winds to onshore and returning moisture to the area.
Upper air analysis this morning showed a large amplitude ridge over the western half of the country with a weakness underneath it along the gulf coast. At the surface, there was a trough near the coast and high pressure over east Texas. The upper level weakness under the ridge will remain along the Texas coast.
/issued 408 AM CST Thu Feb 9 2017/ High pressure ridge will remain over the area the next few days providing mild but warm wx for the region. A strong upper trough will move ashore the West Coast Friday.
Strong northwest flow aloft through the Northern Plains this morning will continue to stream in band of mid to high clouds which will spread eastward through the day as flow begins a gradual transition to broad flat ridging by Friday morning. A few readings in the lower 30s will be realized at higher elevations of south central SD. High resolution model solutions concur that ridge enhanced winds will be likely tonight due to flow direction and inversion depth, with post 06z conditions of 25 to 35 mph gusts.
/ISSUED 553 AM CST Thu Feb 9 2017/ Mild/dry weather to prevail the next couple of days as a flat up- per ridge builds over the region in the wake of yesterdays front. Warming temperatures/slowly increasing low-level moisture return to SE TX this weekend as the upper ridge breaks down and onshore surface winds resume. However, rain chances should remain on the low side starting Fri night through Sat given the lack of signif- icant lift/deep layer moisture. But we will be seeing changes by Sun afternoon/evening with the approach of a cold front from the Central Plains. This boundary is expected to slow down across SE TX Sun night and along with possible embedded short waves in the increasingly SW flow aloft (via the closed upper low near the CA Baja) will help produce scattered activity across the CWA by Sun night.
A low pressure trough is over the Eastern Pacific this afternoon with very moist west-southwest flow and most likely the warmest temperatures over Southeast Idaho this afternoon. Tonight the air mass will begin to cool down with the trough moving inland and the moist southwest flow shift over the South Central and Caribou Highlands overnight.
Cooler temperatures and north/northeast winds prevail early this morning is wake of a cold front passing last night. Temperatures today will peak in the low to mid 70s across most locations, but well above normal temperatures return on Friday, with highs in the upper 70s to lower 80s again.
1202 PM EST Thu Feb 9 2017 Gusty NW winds will continue through the afternoon in the wake of a cold front.
High pressure system that brought the cold snap will shift from the Ohio Valley region to the southeast U.
SHORT TERM (Tonight through Friday Night): High pressure to the north is moving swiftly east ahead of a mid level ridge moving east across the Western United States. As well, high pressure is spreading over the local area and the Gulf. Already seeing increasing cloudiness near the coast as moist gulf air rides up over the lower level cooler air. A tongue of higher dew point air will push back over the Lower Valley overnight. With the light winds and higher dew points near the coast, patchy fog will be possible, but the low clouds will afflict coastal areas and thicken inland overnight as well. High temperatures will be back into the lower to mid 80s for inland areas.
System tracking to the north has potential to produce a very brief 1 to 2 hour light snowfall approx 14-16z along the developing warm front. Best potential for more moderate bursts of snow across Southeast Michigan will be between 5-11 AM EST when a weak cold front trailing low pressure developing near Lake Superior will pass through the area. H850 temps falling to -18 to -20 C will support max temps only in the low to mid 20s today, with wind chills remaining in the single digits. Very dry arctic airmass will fill in with high pressure behind the exiting upper wave. Dry air and winds shifting more southwesterly should support brief clearing late this evening and overnight before clouds increase again late ahead of the next low pressure system.
/Issued 316 AM EST Thu Feb 9 2017/ A line of convection ahead of a cold front will exit east of the area early this morning. The most notable sensible weather for Thursday will be the windy post-frontal conditions ushering in a much cooler and drier airmass. A Wind Advisory will continue for these far north Georgia locations today given the high forecast wind gusts. Most locations will see low temperatures at or below freezing by Friday morning. RW High pressure at the surface has moved offshore by Friday night.
This has set up a perfect scenario for freezing rain, as cold air in the lower levels is topped by warmer air aloft. Warmer air will continue to work northward through the afternoon, and should eventually turn all precipitation over to rain. Winds have also resulted in unusually warm temperatures, in some cases over 50 degrees! A cold front is expected to move through the region late tonight into Friday morning.
210 PM EST Thu Feb 9 2017 Cold high pressure will build into the Carolinas from the west today, settle over the area tonight, then shift offshore during the day Friday. Lows generally in the lower to mid 20s expected. High pressure will move offshore during the day Friday. As such, lows Fri night will be 10F+ warmer than tonight, in the mid 30s.
Warm front Friday. Warmer for the weekend. Sent a quick update to issue a wind chill advisory for the higher elevations of Pocahontas and Randolph counties tonight into Friday morning. Max temperatures will stay at or below freezing with PCPN gradually ending by late morning. High pressure slides to our SE on Friday bringing warm southwesterly flow back into the region.
218 PM EST Thu Feb 9 2017 The pressure ridge moving into the forecast area behind a cold front will be near the area late tonight and Friday morning. The ridge will move off the coast Friday afternoon.
436 PM EST Thu Feb 9 2017 Snow showers will continue through the afternoon before high pressure begins to move over the region and dry conditions resume overnight. Warmer temperatures and rain chances return for the weekend. However, upslope flow will continue to create accumulating snow showers in the ridges into the evening hours. Here, snow will begin to shut off around midnight as surface ridging increases.
At the surface, a high pressure ridge axis extends through the Missouri River Valley. The high pressure ridge will traverse the area next 12+ hrs with dry and cold conditions, then tonight on the backside of the high southerly winds will strengthen and signal a notable warming trend into the weekend. Tonight, the high pressure shifts east with southerly return flow increasing. Dry but windy and warmer conditions will be seen across the area on Friday as a storm system moves through the upper Midwest causing the snow to melt.
This is in large part due to a deepening trough over the east that will bring a major winter storm to the Northeast.
1235 PM EST Thu Feb 9 2017 Snow showers will continue through the afternoon before high pressure begins to move over the region and dry conditions resume overnight. Warmer temperatures and rain chances return for the weekend. Building high pressure and backing flow should end any remaining snow showers this evening.
High pressure will build in from the Ohio Valley late tonight and early Friday, bringing fair weather and diminishing winds. A warm front will approach from the Great Lakes later Friday, bringing increasing clouds and the chance of light snow over the northern counties. Snow showers with lake enhancement are likely to linger over the Alleghenies into the evening in association with strong CAA, upslope and passage of upper trough axis. Blustery and cold conditions are in store for the region tonight, as pres gradient remains fairly tight between intense low east of New Eng and high pressure moving into the Ohio Valley. However, a warm front lifting through the eastern Grt Lks should spread increasing clouds across the region later in the day.
Overnight, a shift back to a southerly and southeasterly fetch will begin the process of moistening the low level atmosphere likely resulting in increasing cloudiness, especially in the southeast.
With low pressure exiting to the northeast, low-level moisture bails by 18z. Surface and 850 mb ridge quickly push east into Friday, with SW return flow setting up. 850 mb winds out of the WSW really crank up Friday afternoon and evening due to strengthening gradient between low pressure in southern Canada and high pressure over the Gulf of Mexico.