Aikyam-Lab/Synoptic-Bench huggingface dataset:
/issued 249 PM CDT Thu May 25 2017/ SHORT TERM (Tonight through Friday Night): 500mb ridge across the central United States this afternoon will begin to move eastward tonight into Friday as a 500mb subtropical ridge develops across northeast Mexico and the Rio Grande valley. This will continue to provide subsidence across the CWA even as an onshore flow continues to increase across the lower Texas coast tonight into Friday.
936 PM PDT Thu May 25 2017 Cooler weather is in the forecast through Friday as a weak trough of low pressure moves through the region. Also, the trough may create scattered light showers over and west of the mountains late tonight through early Friday morning. High pressure aloft will rebuild over the West this holiday weekend for warmer weather and a shallower marine layer.
High pressure builds both aloft and at the surface across the central and eastern Gulf of Mexico heading into Friday, maintaining mostly clear skies while reestablishing onshore flow across the central Gulf coast.
709 PM EDT Thu May 25 2017 A low pressure system will continue to impact the region today and bring the chance for showers over the northeast. Stacked uppr lvl low is now located over the Ohio valley this afternoon and the trough axis runs into the Carolinas. Sfc temps will remain in the low to mid 50s tonight.
Once this front finally works just south of area, a developing upper low over nw Mexico will help to stall front and move it into, or possibly even north of the cwa.
The low will continue to slowly move away from the region this evening.
Currently, there is a large gradient of temperatures between cooler air (40s and 50s) generally north of I-70 and locations south where cooler air has not reached yet and temperatures are in the 70s and 80s. Short term forecast models indicate cooler air dropping a bit further south this evening but this will only bring a minor decrease in low temperatures tonight. A closed low splitting off of the parent closed low over Saskatchewan is expected to develop over Oregon and Idaho and push energy into NE Utah beginning Friday night, beginning another round of showers and potentially thunderstorms across NE Utah and NW Colorado again.
/Issued 659 PM EDT Thu May 25 2017/ An anonymously deep upper level low [at least for this time of year] will continue to pivot toward the northeast through the short term. Residual shower activity associated with this low has diminished this morning across the area, thanks to sufficient subsidence.
For KELD and KMLU the lower ceilings will not be dropping until the mid morning and not lasting into mid day.
Winds become southerly again by Friday in advance of a low pressure area organizing back over the Plains.
740 PM EDT Thu May 25 2017 WV imagery and RAP analysis indicated mid/upper level trough over the wrn CONUS with a downstream ridge from the cntrl plains through the upper MS valley into nw Ontario. At the surface, riding also prevailed from the lower MS valley through WI to wrn Lake Superior. Friday night: A weak trough/cold front is expected to slide across the U.
1029 PM EDT Thu May 25 2017 An area of low pressure will push east of the region this evening. Lingering cloud cover will likely keep eastern zones a bit warmer tonight than western zones, but still anticipate a fairly uniform temperature pattern, with lows ranging from the low to mid 50s by the end of the near term period. A low pressure system will begin to quickly move towards the area Friday evening into Friday night. Weak cold front will be laying out across the region at the beginning of the period.
The next upper trough will move across the area Friday.
Temperatures are again running much cooler this evening in many areas. Tonight the central and north end of the valley is running much cooler with temperatures down around 12 degrees from 24 hours ago. The Sacramento region is only a couple of degrees cooler since it had cooled off last night. A low pressure area will remain centered east of the region and will help to keep temperatures cooler than normal for Friday and near today's highs.
501 PM MDT Thu May 25 2017 19z surface analysis had low over southern SK with cold front through eastern ND/central NE. Another trough behind low into central MT. Attention then turns toward upper low over SK with trough into the central Rockies.
An upper ridge will bring dry and warmer weather through Memorial Day.
739 PM EDT Thu May 25 2017 Unsettled conditions will continue through this evening as an upper level trough crosses the local area from the west. Warmer temperatures and chance for showers and thunderstorms will return over the weekend. A cold front will approach from the west on Memorial Day. Dry slot continuing to fill up w/ BKN CU and developing (SCT) tstms as an upper level trough enters the region. Other than possible ISOLD SHRAs and VRB clouds far NNE locations early Fri as upper level low is slow to reach New England. Weak ridge aloft nudges into the region from the WSW Fri night into Sat. Lows from the u50s NW to the low 60s SE.
925 PM EDT Thu May 25 2017 Low pressure and associated cold front will move through the area this evening.
Cassell Winds will gradually diminish this evening as low pressure in Saskatchewan moves off to the east. Drier and warmer conditions move in for the holiday weekend with temperatures trending above seasonal averages. However, south of Interstate 90, an upper low will push -SHRA north from Idaho to our southern terminals (KWYS, KDLN) after 06z, which will mean VFR cigs transitioning to MVFR at times through 18z.
Expect slightly cooler than seasonal average overnight temps with clear skies and light winds for pleasant conditions. An upper level ridge reaches from Mexico to Hudson Bay while a low aloft OH troughs southeastward. With time - The upper ridge slides out over the western Gulf and stretches to Ontario while the upper low tracks to the Canadian Maritimes and takes the trough with it. although a weak short wave trough hangs back across northern FL. The Gulf high pressure tracks to FL with the front moving into far south FL tonight then south of there Fri. The weak short wave trough has very little impact as the deep layer ridging sliding toward the area from the Gulf dominates.
/issued 308 PM CDT Thu May 25 2017/ Skies are mostly sunny across the forecast area this afternoon with temperatures generally in the low to mid 70s. High pressure is centered over the northern Gulf of Mexico at this time. The high should not move much tonight leaving continue dry weather over the region. On Friday, a warm front will move through the forecast area during the morning hours. Temperatures will be warmer than today with highs mainly in the 80s. By Friday night, a cold front will approach southern Missouri and northwest Arkansas.
The latest HRRR and 4 km NestedNAM drive clusters of convection through the I-70 corridor from around 2 to 4 UTC this evening, tying into the northern periphery of the low level moisture advection wind field convergence along the trailing edge of a weak northern Plains cold front.
/Issued 331 PM CDT Thu May 25 2017/ After cool start to the day, rapid warmup is underway with temps running 10-15 degrees warmer than yesterday.
High pressure settles across the area with a weak pressure gradient in place. High pressure and a weaker pressure gradient will settle across ECFL.
/issued 417 PM CDT Thu May 25 2017/ High pressure has settled over the Gulf coast region with low humidity persisting with clear skies. Temperatures were warm, in the lower 80s, but this is below the seasonal normals which are upper 80s for highs. It will be more humid, but still not oppressive as dew point temperatures are expected to be in the low to mid 60s until Friday evening when southerly winds will begin to bring the warm muggy conditions back.
1049 PM MDT Thu May 25 2017 19z surface analysis had low over southern SK with cold front through eastern ND/central NE. Another trough behind low into central MT. Attention then turns toward upper low over SK with trough into the central Rockies.
617 PM CDT Thu May 25 2017 Isolated light rain showers associated with the passage of a cold front across the area, will gradually taper off this evening.
Lows are expected to be in the lower to mid 70s. With the low-level thermal ridge a little stronger across our area, along with considerable sunshine, temperatures will be hot again Friday afternoon.
649 PM CDT Thu May 25 2017 At H5 there is a closed low moving into south central Canada with a trough into the California coast. Ridging from northern Mexico into Northern Minnesota with another closed low Over Indiana and a deep trough into the Gulf Coast of Florida. Strong surface cold front off the east coast. With 3 hr pressure falls around 2mb looks like the front is still moving south and may shunt convection away from the higher terrain. Lows tonight slightly cooler than last and have gone on colder side of guidance. Highs slightly cooler around 70.
Shower development has been focused along the north and west side of an upper low centered near Weiser ID this evening. The low center will drift eastward overnight, with a narrow band of precipitation continuing along its northern periphery. Also expect shower development over s-central Idaho later tonight as energy swings around the south side of the low. as an upper level low moves through the area.
Clouds were also decreasing over the area as a weak secondary cold front and upper trough push east out of the region. Clouds will be on the increase again late tonight with precipitation chances moving into the western mountains as an upper low, seen over the Pacific NW on water vapor, moves SE toward SW MT. Trowal on back side of upper low in southern Saskatchewan continues to wrap some light showers into our cwa. Satellite imagery shows western portion of split trof dropping into eastern Oregon.
For KELD and KMLU the lower ceilings will not be dropping until the mid morning and not lasting into mid day. Once this front finally works just south of area, a developing upper low over nw Mexico will help to stall front and move it into, or possibly even north of the cwa.
704 PM CDT Thu May 25 2017 The 00 UTC surface analysis showed a pressure trough or weak cool front along a Rolla-Medina-Ashley line.
703 PM CDT Thu May 25 2017 The 00 UTC surface analysis showed a pressure trough or weak cool front along a Rolla-Medina-Ashley line.
Scattered cloud cover will move into the area from the west during the day Friday in response to the aforementioned low pressure area, but VFR conditions will prevail through the period. Temperatures reached into the low to mid 80s. A ridge of high pressure from south Texas to Iowa prevailed with upper level troughing across the eastern and western United States.
823 PM EDT Thu May 25 2017 An area of low pressure will push east of the region this evening. An area of low pressure will push east of the region this evening. A low pressure system will begin to quickly move towards the area Friday evening into Friday night. Weak cold front will be laying out across the region at the beginning of the period.
The 00 UTC surface analysis showed a pressure trough or weak cool front along a Rolla-Medina-Ashley line.
515 PM MDT Thu May 25 2017 Winds will gradually diminish this evening as low pressure in Saskatchewan moves off to the east. Drier and warmer conditions move in for the holiday weekend with temperatures trending above seasonal averages.
/17 Departing mid level cold core low has left dry northwest flow in its wake over the forecast area today as ridging takes over aloft. After a cool morning in the lower 50s, temperatures have warmed quite efficiently in the dry airmass with upper 70s and near 80 being seen at observation points this afternoon. The low level dry air will allow for another efficient warming day Friday, at least in the east as mid 50s dewpoints hang on. In the west, dewpoints will start creeping back up through the 60s into the lower 70s with humid conditions in place by afternoon.
1029 PM CDT Thu May 25 2017 Isolated light rain showers associated with the passage of a cold front across the area, will gradually taper off this evening.
Tight surface pressure gradients have allowed some gusty winds for this afternoon as we transition with our exiting low pressure system toward New England and building high pressure from the Gulf of Mexico. Winds are expected to relax tonight as surface ridging takes over with mostly clear skies, light to near calm winds and and a dry atmosphere. Warmer temperatures return on Friday as upper level ridging builds in across the area.
629 PM CDT Thu May 25 2017 19z/2pm surface analysis shows weak ridge of high pressure extending from the western Great Lakes to the Gulf Coast. Despite presence of ridging, clouds associated with a slowly departing low over eastern Ohio persist across the E/NE KILX CWA this afternoon. A warm front will lift northward through the area Friday morning, possibly setting off a few WAA showers across the NW CWA. to the lower 80s along/south of I-70.
Cassell Winds will gradually diminish this evening as low pressure in Saskatchewan moves off to the east. Drier and warmer conditions move in for the holiday weekend with temperatures trending above seasonal averages.
Low pressure system continues working east across southern Saskatchewan with a southward trailing cold front currently across the central dakotas. For the rest of today and tonight, isolated showers will move through thanks to weak warm air advection and a subtle upper low ripple in the flow. For tomorrow, temperatures should be a few degrees warmer in southerly flow ahead of the front.
Surface pressure ridge will continue moving eastward away from the CWA, allowing the next weather system to our west to advance closer. It will have a pressure trof / weak front reflection at the surface.
1002 PM EDT Thu May 25 2017 Low pressure will move off to the northeast of the region overnight, with improving conditions on Friday. Warmer temperatures and chance for showers and thunderstorms will return over the weekend. A cold front will approach from the west on Memorial Day. Other than possible ISOLD SHRAs and VRB clouds far NNE locations early Fri as upper level low is slow to reach New England. Weak ridge aloft nudges into the region from the WSW Fri night into Sat. Lows from the u50s NW to the low 60s SE.
Otherwise prevailing SKC conditions per ridging influences sfc/aloft.
734 PM EDT Thu May 25 2017 A weak cold front is currently moving across South Florida this evening, and will continue to slowly move through during the overnight hours. /issued 334 PM EDT Thu May 25 2017/ A broken line of thunderstorms pushing across South Florida is located just ahead of a cold front this afternoon.
1206 AM EDT Fri May 26 2017 Low pressure will provide rain chances through the morning before exiting. Another approaching low pressure area will keep rain chances in the forecast through the holiday weekend. Showers should continue overnight with moisture and ascent as low pressure drifts east. Dry weather should return late with weak building high pressure. PoPs will increase again starting Friday night in increasing isentropic lift ahead of an advancing warm front.
732 PM EDT Thu May 25 2017 The upper trough axis will shift farther east of the forecast area tonight.
Rain is finally tapering off as the stacked low pressure over southern Ohio continues to pull away from the area, giving way to a more mixy westerly flow in the low levels. Still seeing patchy light rain across the Bluegrass region in Kentucky, but expect that to end by sundown as the low continues to exit the region. Warm front well to our north will fire convection later in the day, but will limit POPs in the Ohio Valley to 20-30% Fri night as the cap guides most of the storms across central Indiana into Ohio.
909 PM EDT Thu May 25 2017 High pressure will build overhead Tonight.
The late week near-zonal mid to upper flow pattern will undergo slightly change as a Gulf-centered upper ridge builds up to the northwest in response to deepening upstream Great Basin upper troughing.
In the middle and upper levels(700-200 mb), latest available IR imagery overlaid with model streamline analysis as of 900 pm, detail the axis of a negatively tilted full latitude trough oriented from Ontario southeast to off of the North Carolina coast. The center of the middle and upper low pressure had migrated far northeastward from 24 hours prior, and was over Eastern Lake Erie, hence the base of the trough is now zonal flow again across Florida and the Keys. At the surface and in the lower to middle levels,(Surface to 700 mb), latest IR imagery overlaid with land and marine surface observations and analysis as of 900 pm, detail A 996 mb low near Atlantic City trailing the terminus of a decaying frontal boundary down in our area in the Florida Straits.
This will allow the surface winds to become more SE'ly on Thursday morning and set up decent moisture return across the high plains of SE WY and W NE. LCL's will be lower than today so can't rule out an isolated tornado, but the overall threat will be limited by weak low level shear and curvature in the lowest 1 km.
618 PM CDT Thu May 25 2017 Upper level trough, bringing mid level clouds and scattered light showers/sprinkles east in the region this afternoon, will move east into the evening. At the surface, a trough will also push through tonight bringing winds around to the west.
A weak cold front will slowly push through the panhandles late tonight into Friday morning. A slowly advancing cold front is expected to drop into the combined Panhandles during the course of the day on Friday, though timing of the advancement of this front may not prevent most of the region reaching into the upper 80s to mid 90s in spots.
The highest rain chances will migrate to southern interior areas early Friday afternoon due to daytime heating. /issued 734 PM EDT Thu May 25 2017/ A weak cold front is currently moving across South Florida this evening, and will continue to slowly move through during the overnight hours. /issued 334 PM EDT Thu May 25 2017/ A broken line of thunderstorms pushing across South Florida is located just ahead of a cold front this afternoon.
Chattanooga Airport, TN 55 85 66 86 / 0 10 10 30 Knoxville McGhee Tyson Airport, TN 55 82 65 84 / 10 10 10 30 Oak Ridge, TN 54 83 65 84 / 10 10 10 30 Tri Cities Airport, TN 51 77 61 82 / 30 10 20 40.
1132 PM CDT Thu May 25 2017 At H5 there is a closed low moving into south central Canada with a trough into the California coast. Ridging from northern Mexico into Northern Minnesota with another closed low Over Indiana and a deep trough into the Gulf Coast of Florida. Strong surface cold front off the east coast. With 3 hr pressure falls around 2mb looks like the front is still moving south and may shunt convection away from the higher terrain. Lows tonight slightly cooler than last and have gone on colder side of guidance. Highs slightly cooler around 70.
Otherwise prevailing SKC conditions per ridging influences sfc/aloft expected thru 27/02Z.
A wind shift is also expected from the NW overnight as a cold front moves into OK.
The rest of the night looks to be dry as the departing upper low continues to move up the east coast. Low temps still look to range through the low to mid 50s. Rain is finally tapering off as the stacked low pressure over southern Ohio continues to pull away from the area, giving way to a more mixy westerly flow in the low levels. Still seeing patchy light rain across the Bluegrass region in Kentucky, but expect that to end by sundown as the low continues to exit the region. Warm front well to our north will fire convection later in the day, but will limit POPs in the Ohio Valley to 20-30% Fri night as the cap guides most of the storms across central Indiana into Ohio.
1014 PM EDT Thu May 25 2017 The upper trough axis will shift farther east of the forecast area tonight.
549 PM MDT Thu May 25 2017 Currently, there is a large gradient of temperatures between cooler air (40s and 50s) generally north of I-70 and locations south where cooler air has not reached yet and temperatures are in the 70s and 80s. Short term forecast models indicate cooler air dropping a bit further south this evening but this will only bring a minor decrease in low temperatures tonight. A closed low splitting off of the parent closed low over Saskatchewan is expected to develop over Oregon and Idaho and push energy into NE Utah beginning Friday night, beginning another round of showers and potentially thunderstorms across NE Utah and NW Colorado again.
A weak cold front will bring northerly winds late tonight.
Expect a wind shift from the northwest overnight thru early Friday morning as a cold front moves into northern OK.
843 PM EDT Thu May 25 2017 An upper low pressure system continues to pivot away from the region allowing showers to push away during the early overnight. Scattered showers and perhaps a few thunderstorms are once again possible Friday afternoon into Friday night as a low pressure system approaches the region. Low level flow may be just strong enough east of approaching low level ridge axis to promote stratus vs fog, but may consider patchy fog mention across central/western portions of the area late evening/overnight.
Windy and cooler conditions are forecast across northern Arizona on Friday. Less wind and a warming trend are in the cards this weekend as high pressure builds in from the west.
907 PM EDT Thu May 25 2017 Low pressure and associated cold front will move through the area this evening.
With the region still being squeezed between high pressure over the northeastern gulf and low pressure over Oklahoma, another breezy day is in store with winds picking up by mid morning and persisting until sunset. Scattered cloud cover will move into the area from the west during the day Friday in response to the aforementioned low pressure area, but VFR conditions will prevail through the period. Temperatures reached into the low to mid 80s. A ridge of high pressure from south Texas to Iowa prevailed with upper level troughing across the eastern and western United States.
520 AM CST Sat Nov 11 2017 Light snow across northwest Minnesota associated with an upper level low propagating eastward across southern Canada will exit during the morning hours. As the system passes to the east, winds will become northwest with the passage of a cold front.
/issued 344 AM CST Sat Nov 11 2017/ (Today and Tonight) Another cloudy day upcoming for West Central Texas, as continued low level moisture advection keeps the low clouds in place. Highs today will range from the upper 60s across the Heartland to the lower 70s across the western Concho Valley.
The trough of note for today is seen moving through the Rocky Mountains of Idaho early this morning. This trough has been well advertised by many models for several days now, so confidence is rather high that isentropic upglide will get going ahead of the trough by this afternoon, with model soundings showing good saturation up through 700 mb by the late afternoon hours.
634 AM EST Sat Nov 11 2017 High pressure will bring dry weather today. A low pressure area will then track across the area Sunday, bringing showers.
949 AM EST Sat Nov 11 2017 High pressure across the Great Lakes will move east off the New England coast Saturday night. This will allow weak a low pressure system to cross the Ohio Valley Sunday afternoon and Sunday night.
Surface map this morning shows a ridge of high pressure situated just to our north and west. Winds are finally diminishing and high clouds are streaming across the mid state, but temperatures are already down to freezing or close to freezing at most locations. The ridge will slip past during the next few hours, setting up return flow and warmer temperatures today.
637 AM EST Sat Nov 11 2017 Arctic high pressure will extend across the eastern United States through Sunday.
A cold front will move southeast across the state later today. Behind this front, cooler air will filter into the region, but not as cold as it has been. Look for temperatures slightly below normal on Sunday, but much warmer than it has been. High pressure will drift overhead Sunday and Sunday night.