Aikyam-Lab/Synoptic-Bench huggingface dataset:
322 PM CST Fri Feb 16 2018 An upper level trough, located across eastern WA and ID will dig southeast across the central plains late Tonight and Saturday. Residual moisture will return ahead of the a surface cold front across portions of east central KS. There will be enough ascent ahead of the upper trough and isentropic lift for light snow or possibly freezing drizzle, if the ascent is not strong enough to moisten the mid levels. The chances for any light snow or freezing drizzle will be along and south of I-35 and should turn over to light rain as warm advection cause temperatures to warm into the mid 30s by 8 AM.
A slight warming trend is expected today into Saturday as weak high pressure builds over the eastern Pacific.
306 PM EST Fri Feb 16 2018 A cold front that produced widespread rain has moved south, allowing colder temperatures and drier conditions to visit tonight as high pressure crosses Northern Ohio. On Saturday, low pressure traveling over the Southern Appalachians will bring precipitation mainly to southeastern locations.
334 PM EST Fri Feb 16 2018 Tonight and Saturday: Broad high pressure in place will continue to dominate at least through the evening hours maintaining dry conditions across much of the U. Some areas near Lake Michigan may see rain and/or freezing rain for much of the event, depending on track and strength. At this time, greatest snowfall looks to be somewhere over the NW half of Upper Michigan, with the least and possibly some freezing rain along Lake Michigan.
As that occurs surface winds will become southwesterly bringing back warmer air and increased moisture. Tomorrow a cold front will drop across the region from the northwest ushering out any left-over precipitation. This cold front won't be near as strong as todays.
On the leading edge of the shield of precip, temperatures will be around freezing and light snow will be likely. As warm advection with southerly winds kicks in, temperatures will slowly creep upward above freezing from southwest to northeast and the light snow will change to just a cold rain. There could be an isolated slick patch or two on elevated bridges or road surfaces.
Otw, quite the cold front this morning. This feature however, will quickly return to the north as a warm front tomorrow morning.
1220 PM EST Fri Feb 16 2018 Rain will taper off today, as a cold front exits the region. Dry weather will return tonight and Saturday morning as high pressure slides east across the region. Similar to last night, models continue to struggle with low pressure and a cold front moving up the coast Saturday afternoon and night.
342 PM EST Fri Feb 16 2018 Cold front is now exiting to our south with the upper level support for the rain earlier today now exiting as well. Thus, going to go more robust with the sky cover and that should help keep lows in the low to mid 30s tonight.
Cold front along a Del Rio to San Antonio to Columbus line continues to move south across our area. Cooler temperatures are expected most areas, except across the Rio Grande on Saturday where the front drifts northeast.
345 PM CST Fri Feb 16 2018 After a chilly start today, southwesterly surface winds have brought warmer air into the region. Overnight into Saturday morning, this trough will cause enough lift to produce some light snow showers over northwest Iowa. During the daylight hours, a subtle secondary trough could bring another dusting to the tri- state area, but again, this looks to be of minimum impact.
242 PM EST Fri Feb 16 2018 A cold front will settle south of the region tonight allowing high pressure to build into the region through Saturday.
226 PM EST Fri Feb 16 2018 High pressure will gradually clear our skies as it brings colder and drier air into the region tonight. High pressure builds in overnight bringing clearing, with light winds ending the lake fetch. Fast moving southwest flow and baroclinic make it difficult to place the low and snow amounts. Still plenty of time before an Advisory is needed, especially given the low confidence.
/Issued 1047 AM CST Fri Feb 16 2018/ Cold front has cleared the entire area, and has left the area with considerably cooler temperatures and abundant mid and high cloud cover.
1247 PM EST Fri Feb 16 2018 Rain will taper off this afternoon as a cold front exits the region. Temperatures will continue to fall during the day with colder air moving in behind the cold front. Dry weather will return tonight and Saturday morning as high pressure slides east across the region. Similar to last night, models continue to struggle with low pressure and a cold front moving up the coast Saturday afternoon and night.
330 PM CST Fri Feb 16 2018 A cold front brought cooler temperatures and at least a brief shot of rain to most of Middle Tennessee this morning. Temperatures are currently in the low to upper 40s across the area. We'll see a break in precip this evening, however the next shot of rain will come quickly Saturday morning as a weak trough swings across the eastern half of the country.
1124 AM CST Fri Feb 16 2018 Shallow airmas cold front making quicker progress into ne TX around Ouatchita mts with front still just nearing the AR/LA state line, well defined on vsbl satellite. An approaching cold frontal boundary will move southeast across the region today, resulting in winds veering to the north with sustained speeds of 10-15 kts and higher gusts during the late morning-the afternoon, before relaxing to below 10 kts around sunset. In addition, this cold front will bring about the chance of intermittent -DZ and scattered -RA with perhaps a lull during the evening before returning overnight. Have tried to time the rainfall and cold frontal passage with this TAF forecast. /issued 500 AM CST Fri Feb 16 2018/ The cold front is about to push into the NW corner of our CWA with gusty Northerly winds.
A slight warming trend is expected into Saturday as weak high pressure builds over the eastern Pacific.
Drier and warmer conditions will return Saturday before another system passes through the region.
251 PM EST Fri Feb 16 2018 H100-H70 ridge axis extending from the nrn Bahamas acrs the south FL peninsula will remain in place overnight as a broad short wave trof over the ern CONUS pushes toward the Atlc coast. Deep layer western Atlc ridging will extend across the central FL peninsula and across the eastern GOMEX thru this period. Warming trend will continue, with highs in the low to mid 80s, around 10 degrees above normal. Strong western Atlc mid-level ridging remains in firm control of the weather pattern across the FL peninsula and southeast U. While short-lived and occasional bouts of deeper moisture undercut the strong/deep high pressure PoPs will generally remain at or below 20pct (generous) thru the period. Onshore flow at the surface continues with surface ridging focus north of central FL.
248 PM EST Fri Feb 16 2018 A cold front will move through the area tonight.
Hoenisch Windy conditions today with some blowing and drifting snow will give way to a cold front this evening into the overnight. Temperatures will continue to rise into the 20s and 30s today, then drop this evening and overnight with the cold frontal passage. Cold front moves front N to S across the area this evening with IFR/LIFR becoming widespread as a band of potentially moderate snow moves south through trough the area with gusty north winds following and creating some blowing and drifting of the snow.
313 PM EST Fri Feb 16 2018 High pressure will gradually clear our skies as it brings colder and drier air into the region tonight. High pressure builds in overnight bringing clearing, with light winds ending the lake fetch. Fast moving southwest flow and baroclinic make it difficult to place the low and snow amounts. Still plenty of time before an Advisory is needed, especially given the low confidence.
Hoenisch Windy conditions today with some blowing and drifting snow will give way to a cold front this evening into the overnight. Temperatures will continue to rise into the 20s and 30s today, then drop this evening and overnight with the cold frontal passage. Toward 00z/17 a fast-moving cold front will move south out of Canada and bring a brief band of possibly moderate snow and increasing winds out of the north.
1220 PM EST Fri Feb 16 2018 It will be drier but colder today with high temperatures this afternoon only reaching the lower to middle 30s.
329 PM CST Fri Feb 16 2018 Tonight through Saturday: A shallow cold front is pushing south of I-20 this afternoon and will weaken and stall tonight as it approaches the coast. Gusty northerly winds and significantly cooler temperatures will continue to follow the front into the early evening. The increasing warm advection combined with daytime heating will mix out the weak front and refocus cooler temperatures over northern portions of the ArkLaMiss during the day while allowing for another warm afternoon farther south, especially along the Highway 84 corridor.
High pressure slides east of the area overnight, exiting to the east by sunrise. Temps near the freezing mark will make any accumulations on hard surfaces difficult, but we could see 1/2 inch or less in some spots.
1047 AM CST Fri Feb 16 2018 Cold front has cleared the entire area, and has left the area with considerably cooler temperatures and abundant mid and high cloud cover.
135 PM CST Fri Feb 16 2018 For the 16/18Z terminals forecasting a mix of VFR/MVFR and have tempo groups for each since the ceilings will be up and down ahead of and in wake of a cold front moving across North Louisiana and East Texas as of this writing. Surface winds will be light and variable ahead of the cold front and shifting the Northwest to North in its wake with speeds of 10-15 knots and higher gusts to 15-22 knots. /issued 1124 AM CST Fri Feb 16 2018/ Shallow airmass cold front making quicker progress into ne TX around Ouachita Mountains with front still just nearing the AR/LA state line, well defined on visible satellite.
Observation trends support the previous forecast thinking with the shallow cold front pushing south across the ArkLaMiss today. Meanwhile back to the northwest, a cold front is just entering the northwest corner of AR heading southeast. Despite the cloud cover, another warm day is in store for those spending the majority of the day ahead of the cold front.
Blustery northwest winds ahead of the high pressure center will affect the area during the morning hours, especially before sunrise, but remain well below advisory criteria. As the high pressure area moves rapidly away to our east tonight, it will be replaced by modest low- level warm air advection and redevelopment of clouds.
202 PM EST Fri Feb 16 2018 A cold front that produced widespread rain has moved south, allowing colder temperatures and drier conditions to visit with high pressure by tonight. On Saturday, low pressure traveling across the Southern Appalachians will bring precipitation mainly to southeastern locations.
223 PM CST Fri Feb 16 2018 A much cooler day today with current afternoon temperatures holding in the 50s north of I-10, which is roughly 20-25 degrees colder than what we saw yesterday across these areas. Dewpoints/moisture will remain fairly high tonight so not expecting low temperatures below freezing anywhere.
With the lighter winds and clearing skies, temperatures to drop into the low 20s to low 30s. Some concern about precip type initially because of the colder air and evaporative cooler aloft. However, the ground will be a bit warmer so most of it will melt on contact. Despite the cloud cover and precipitation, temps to warm up into the low 40s to low 50s on Saturday.
At the surface, cold front that blew through last night is now situated from northern LA into south TX. May see a brief period of rain/snow mix but with temps hovering at or just above freezing, not expecting much in the way of accumulating ice. High pressure is over the area for the first part of this forecast which is diminishing the wind speeds.
The coldest air resides over Nunavut with a trough stretching out from this through northern British Columbia and into the Gulf of Alaska. However, the British Columbia trough will swing farther south and this will form a cold front at the edge of the arctic airmass over the Montana/Canada border.
212 PM EST Fri Feb 16 2018 A cold front will move through the area tonight.
/EC/ Observation trends support the previous forecast thinking with the shallow cold front pushing south across the ArkLaMiss today. Meanwhile back to the northwest, a cold front is just entering the northwest corner of AR heading southeast. Despite the cloud cover, another warm day is in store for those spending the majority of the day ahead of the cold front.
Precipitation will come to an end across southeastern counties in the next few hours, with rain changing to snow in the higher elevations. Although low pressure will stay well to our southeast, precipitation should extend northwest across many locations.
Surface analysis this afternoon places a cold front from Northern Alabama back through Columbus, Mississippi. Short term model trends continue to indicate the aforementioned cold front moving towards the I-20 corridor this evening then becoming quasi-stationary and moving back north as a warm front across the Mid-South later tonight into Saturday.
The cold front lies just north of the area this afternoon.
Highs are expected to reach the 40s and 50s, but the gusty winds will make it feel at least 10 degrees cooler.
1131 AM CST Fri Feb 16 2018 High pressure building into the region today with full sunshine but cool temps.
1034 PM EDT Wed Aug 9 2017 As an area of high pressure moves off to the east tonight, moisture will increase from the south, eventually interacting with an approaching disturbance. Showers and thunderstorms will return to our area, along with increasing humidity for Thursday, particularly east of the I-75 corridor and specifically in the lower Scioto Valley.
Upper level low sitting off the coast will bring a threat of thunderstorms for one more day mainly to interior mountain locations.
In theory, that could be our far southeast parts of the area tomorrow afternoon with some better shear and instability developing in advance of a secondary cold front, though the greatest risk for an isolated severe storm looks to be just to our south and east with better timing for the frontal passage through the afternoon hours. This band is associated with a short wave trough moving through the southern half of Minnesota. As a result, the highest rain chances for tonight were confined to north of Interstate 90. On Thursday, another short wave trough will move through the region. As a result, the highest rain chances were restricted to these areas. On Thursday night, a short wave trough will move southeast through the region.
921 PM CDT Wed Aug 9 2017 Deep, tropical moisture from the Gulf of Mexico continues to advect northward as a very slow moving warm frontal system tries to inch its way north toward the Tennessee Valley region. Thus, have also raised Low temperatures a degree or so, with most areas bottoming out in the lower 70s by daybreak.
Another round of convection will develop this evening along a slowly approaching cold front in central NE/KS, and will push eastward during the night.
The latest convection allowing mesoscale models take these showers east-northeast into portions of southeast and east central Wisconsin (mainly north of Milwaukee) through early Thursday morning, while weakening them as the low-level jet magnitude decreases. Additional showers and thunderstorms are expected Thursday afternoon and evening ahead of a surface cold front. There is some question as to how much the atmosphere can destabilize before the cold front arrives. The wind field isn't super impressive, with veering in the low-levels, and around 30 to perhaps 35 knots of deep layer shear. The main trough and associated surface front are expected to come through late afternoon into the evening, which is good timing for additional convective development in southern Wisconsin. close to where the cold front should be at that time.
919 PM EDT Wed Aug 9 2017 High pressure overhead the remainder of tonight will move offshore Thursday.
/issued 307 PM CDT Wed Aug 9 2017/ (Tonight and Thursday) Upper level ridging centered over the Desert Southwest will expand further eastward across west Texas tonight and tomorrow. Overnight lows will generally be in the lower 70s.
1033 PM EDT Wed Aug 9 2017 High pressure pushes east tonight. Modest instability on the order of 500 to 1000 J/kg of MLCAPE does support thunder chances with the highest probability during the afternoon hours and decreasing gradually after sunset. There no doubt that the area will be in the warm sector of an approaching cold front.
We remain in the mention of General Thunder from the Storm Prediction Center Day 1 convective outlook, which seems reasonable given the low values of instability and shear. The strongest overall forcing will be located over northwest Wisconsin as the LLJ moves eastward ahead of the mid-level trough. We remain under this trough as it slowly moves eastward during the day Thursday.
941 PM EDT Wed Aug 9 2017 Weak high pressure will build into our region from the north through tonight.
Latest model runs all agree on some ridging nudging into the wrn areas after daybreak Thursday which could help put a lid on some of our wet weather.
The 60-70kt jet will remain parked aloft with the area of high pressure sitting south of the Four Corners region. The end of the work week will finally see a change in the synoptic pattern as a broad upper level Pacific trough begins to elongate off the coast of California. The intensification of this trough will result in an increase in south-southwest flow over our area and usher the area of high pressure further east.
however, satellite data depicts increasing moisture downstream, associated with the upper trough near the Bahamas.
Tonight and Thursday Primary challenge during this period is timing the passage of a short wave trough and frontal system with associated convection across the area through Thursday. Then the next round of convection associated with the main upper short wave with cold front to track over the area Thursday.
High pressure will gradually move east of the region tonight through Thursday. However an extension of the ridge will continue to extend SW across the area, along with a persistent wedge of drier air overhead.
Weak upper troughiness to remain over the region. Surface front to remain stalled over the region, perhaps shift north some as a warm front. Min temps will be near normal in the lower 70s. Upper troughiness to dig slightly over the Eastern Seaboard.
Lows will drop into the 60s tonight as highs once again warm into the lower to middle 80s.
758 PM EDT Wed Aug 9 2017 High pressure will remain over the area through Thursday.
18Z surface data has high pressure over the Great Lakes. A cold front ran from the eastern Dakotas into western Nebraska. Attention then turns to the next cold front. Lows tonight will likely be cooler than expected due to the dry ground. Thursday afternoon, the cold front moves through the area. Thursday Evening and Night Thunderstorm Chances: A cold front and scattered showers and thunderstorms will be moving through the SE half of the forecast area during the late evening and early nighttime period.
A ribbon of subsidence/drying was shown on water vapor imagery between axis of weakening upper level ridge across the area and easterly wave approaching the Bahamas. High pressure to the north will provide an easterly wind flow. Approaching inverted trough over the Bahamas is forecast to remain weak, but could tighten the gradient for a time to 10-15 knots. The trough will increase the coverage of showers and storms on Thu, mainly from Cape Canaveral southward.
The highest chances near 50 percent will be across the southeast panhandle into southwest Nebraska during the afternoon.
1023 PM EDT Wed Aug 9 2017 Under partly cloudy skies and light east winds, temperatures are in the lower to mid 80s along the island chain. Surface wise, a trough of low pressure is draped from the northwest Bahamas southward into the eastern portion of the island of Cuba. An elongated, albeit deep trough extending from the northwest Bahamas southward to the archipelago of Cuba will move northwestward and broaden.
The main impacts from Franklin will be along the lower Texas coast as swells from the storm move towards the coastal sections late tonight into Thursday. Some of the outer rain bands from Franklin may also move across southeast portions of the CWA as well as across the southern portions of the lower TX coastal waters late tonight into Thursday.
1058 PM EDT Wed Aug 9 2017 High pressure will move east of Pennsylvania on Thursday, starting a moderating temperature trend with slowly increasing moisture.
Retreating high pressure area keeping southeast flow over region, allowing the deep moisture retunr to go through MO into IA ahead of the approaching front in SD. Upper level low center had moved into ND today, and is progged to move into Great Lakes area. Trailing cold front to reach central IL thursday night. Best upper support over the northern third of IL, closer to the upper level low system.
1032 PM MDT Wed Aug 9 2017 Broad upper trough persists across the western CONUS with upper ridging centered over the western Pacific coast.
/ISSUED 331 PM CDT Wed Aug 9 2017/ Persistent low pressure center was ill-defined on late afternoon surface analysis, but satellite imagery indicates circulation remaining over e-central Tx. All in all, ridging will become established and hold through the forecast cycle.
a cold front was just west of Yankton to Ord to Lexington. Temperatures were affected by the clouds and light rain showers, were in the 70s and 80s with dewpoints in the lower to mid 60s and variable southwest winds.
Area of showers and isolated thunderstorms to the NW of I-44 is struggling to move much farther into the area, given the lower instability this far east. This will be ahead of a low pressure system currently located over North Dakota and an associated frontal boundary progged to push southeast through the Plains and into the region Thursday night.
744 PM EDT Wed Aug 9 2017 A dry night is expected with exiting high pressure.
A cold front is currently located just to the northwest of the CWA. Later Thursday afternoon, another cluster of thunderstorms is expected to develop over the High Plains, mainly affecting the southwestern half of the CWA into the evening and overnight.
Otw, a stationary boundary to our south will work northward as a warm front overnight.
Chattanooga Airport, TN 72 84 72 87 / 40 70 40 50 Knoxville McGhee Tyson Airport, TN 69 82 69 85 / 30 70 40 40 Oak Ridge, TN 69 82 70 86 / 30 70 40 40 Tri Cities Airport, TN 64 81 65 84 / 20 70 40 50.
511 PM MDT Wed Aug 9 2017 Broad upper trough persists across the western CONUS with upper ridging centered over the western Pacific coast.
In the lower levels, about 800mb to 925mb, moisture and marginal instability was still in place below this dry punch aloft in areas along and south of Interstate 90. Also, with freezing levels around 12000 feet a few storms could produce hail to around half dollars as well. Otherwise cooler and less humid air will settle into the area overnight, leading to lows in the mid 50s to around 60 and highs on Thursday in the 70s.
1048 PM MDT Wed Aug 9 2017 A series of cool low pressure troughs moving across the Pacific Northwest, the Northern Rockies and Southern Canada will converge with warmer moist southwest flow on the west side of a flat high pressure ridge over the Desert Southwest and Great Basin, over Wyoming.
743 PM EDT Wed Aug 9 2017 As an area of high pressure moves off to the east tonight, moisture will increase from the south, eventually interacting with an approaching disturbance. Showers and thunderstorms will return to our area, along with increasing humidity for Thursday, particularly east of the I-75 corridor and specifically in the lower Scioto Valley.
752 PM EDT Wed Aug 9 2017 Generally fair weather will continue through tomorrow under high pressure. Period will be quiet under high pressure.