Aikyam-Lab/Synoptic-Bench huggingface dataset:
308 AM CST Wed Mar 1 2017 Cold front currently approaching the Red River Valley of Northeast Texas near Durant Oklahoma continuing to move southeast. Could see increased convective coverage across the region during the morning ahead of the cold front. Overnight lows tonight to fall into the 40s across most locations with the interstate 30 corridor approaching freezing.
1043 PM CST Tue Feb 28 2017 Cold front continues to move across the terminals for the start of the 06Z TAF cycle. Northwest to north winds will be a little gusty behind the cold front, but winds should decrease after midnight. Wednesday will be the coolest day of the next seven behind the cold front with highs generally in the 50s.
For this reason, we have expanded the areal coverage of the High Wind Watch to include all of our north-central counties. with the highest snowfall totals near the divide. Thus I have kept the high wind watch for now. but with the windy conditions, wind chills will make it a bit cooler on both Wednesday/Thursday.
Quick update to try and get better timing for upcoming chances for isolated storms in the northwest, as well as storms ahead of the cold front moving through tomorrow. Ahead of the cold front overnight have mention of wind shear due to the strong low level jet ahead of the front.
Clear, Dry and warmer weather the next couple of days. Temperatures are running slightly warmer than 24 hours ago but will end up cooling back into the 30s by Wednesday morning in the central valley. Temperatures in the valley will warm into the low to mid 60s on Wednesday with light northerly flow.
Nly winds will increase as low pressure tracks from nrn IL into Lower MI by 12z Wed. /Issued 344 PM CST Tue Feb 28 2017/ The surface warm front has lifted north, and was located from just south of Madison to just north of Milwaukee at mid afternoon. Still awaiting our next round of convection, which should arrive early this evening as low pressure approaches. Our greatest severe risk north of the warm front remains elevated hailers, however will have to watch the far south where there is some potential for storms to become rooted within the boundary layer. Colder air wrapping in behind the low will result in a change over from range to snow from northwest to southeast.
342 AM EST Wed Mar 1 2017 Low pressure over will move northeast across the central Great Lakes early today dragging a cold front across the area. This will be followed by a reinforcing cold front tonight.
110 AM EST Wed Mar 1 2017 Strong to severe thunderstorms are likely tonight as a strong cold front approaches.
Tonight into tomorrow: already apparent across the western Panhandles into eastern New Mexico, south and southwesterly flow will increase as a stout ridge axis sets up from the Trans Pecos into the central plains.
Water vapor imagery showing short wave trough and associated lift east of the area.
Chattanooga Airport, TN 62 80 61 81 / 10 0 10 10 Knoxville McGhee Tyson Airport, TN 59 80 57 80 / 10 10 10 10 Oak Ridge, TN 59 80 58 79 / 20 10 10 10 Tri Cities Airport, TN 54 76 52 77 / 10 10 10 10.
Temperatures are in the lower 60s areawide under overcast skies. The trough axis will slowly move east overnight, with shower activity coming to an end.
The steadier rain accompanying the cold front has shifted well to our southeast.
Water vapor imagery showing short wave trough and associated lift east of the area. Still may be a chance of an isolated shower into the early evening over the southern areas; otherwise, building high pressure aloft will lower the rain chances tonight.
746 PM EDT Fri Oct 14 2016 High pressure remains tonight. Very weak warm front crosses Saturday.
Stationary surface frontal boundary across northern Alabama this evening with upper trough just to our west down through Arkansas will keep clouds around through the overnight hours.
01 UTC surface analysis shows high pressure across the Mid Atlantic States and easterly flow is in place across our region. Low level moisture continues to gradually increase with surface dewpoints now back into the lower 60s across North Florida. There's a trough moving across the Lower Mississippi River Valley, with mainly mid and upper level cloudiness spreading across the Southern US ahead of this feature. Overnight lows should also continue to be fairly mild, in the low to mid 60s.
Sfc lee trof persisting with low level moisture returning to portions of se NM, especially along and east of a line from near KROW to KCVN, where lcl br possible 15/07Z-15Z.
Conditions will improve to VFR rapidly Saturday as drier air and high pressure moves in.
632 PM CDT Fri Oct 14 2016 A weak cold front over western ND will move into central ND this evening and into eastern ND after midnight. Slightly cooler Saturday with westerly winds and highs in the 60s.
730 PM EDT Fri Oct 14 2016 High pressure will maintain dry conditions across the region through Saturday evening with seasonably warm temperatures.
837 PM EDT Fri Oct 14 2016 High pressure will remain over the forecast area for the start of the weekend.
934 PM EDT Fri Oct 14 2016 High pressure will remain over the forecast area for the start of the weekend.
Strong area of high pressure extending along the eastern seaboard will maintain an elevated low level E/NE flow across the area. No sig change to gradient flow ascd with ridge to the north is anticipated with winds near 15 kts within 20 NM and 15 to 20 kts with seas 7 ft or greater offshore.
Area of mainly light rain continues to sluggishly penetrate eastward across Middle Tennessee, with rain persisting overnight as an upper trough inches its way across the mid state. High pressure to our east will remain the dominant weather feature at the surface for the next several days, so don't expect any air mass change as a result of this system.
A cold front has moved slowly into Northwest AL this afternoon and is expected to stall and weaken tonight as a small upper trough approaches from the west and becomes sheared. A confluence zone aloft is supporting high pressure across the East Coast states with a cool wedge expected to strengthen tonight.
828 PM MDT Fri Oct 14 2016 A cold front has made it through a large part of our forecast area this evening. Cold front moving through west central Montana shifting eastward and as this pushes the leeside trough off the continental divide expect to see decreasing winds this evening. Downslope is eating away most of the low level precipitation over the plains but as the cold front shifts east tonight it will allow a few showers to reach the ground. Post frontal environment on Saturday will be cooler and still breezy and there is a window where another round of gap flow winds will set up around midday but lack of a critical layer at mountain top and a modest mixing layer should keep winds from becoming too strong.
1239 AM EDT Sat Oct 15 2016 The high will crest over the region overnight into Saturday.
714 PM EDT Fri Oct 14 2016 High pressure will crest over New England tonight.
Visible satellite shows the low clouds are beginning to erode over portions of central KS. Ahead of that wave the low level jet will strengthen over eastern KS through tomorrow evening. The low level jet should prevent the surface from fulling decoupling.
We also bumped up the winds for a couple hours directly behind the cold front. A weak cold front over western ND will move into central ND this evening and into eastern ND after midnight. Slightly cooler Saturday with westerly winds and highs in the 60s.
As the mid-level trough axis moves across MS on Saturday, anticipating that moisture advection will transition from a south to southeast orientation with moisture originating from the Atlantic to an orientation where moisture originates from the Gulf of Mexico. Though lift is present for showers, there still looks to be a dry air layer in the low-levels that may preclude shower activity. Clouds should gradually decrease from west to east as the trough moves east across the TN Valley. The cooler daytime high temperatures would be over northeast AL.
Temperatures are in the lower 80s. In the low levels of the atmosphere, the Florida Keys will remain along the southern periphery of a large area of high pressure over the northeast United States overnight. In the mid levels of the atmosphere, an area of high pressure will be located near the southeast coast of the United States tonight. In the upper levels of the atmosphere, a trough of low pressure will move eastward over the northwest Gulf of Mexico overnight.
VFR conditions with occasional high cigs through 11Z Saturday, at which time increasing southerly low level flow in the lowest 5 kft enhances some spotty stratus. However, moisture will remain in the lowest levels of the atmosphere. Low level moisture will remain in place across the region through the weekend as a surface lee trough develops across the Central High Plains. This lee trough will develop in response to a low pressure system moving into the Pacific Northwest. The increase in low level moisture coupled with the upper ridge aloft will result in hot/humid days and warm nights for mid October.
/issued 407 PM CDT FRI OCT 14 2016/ Tonight and Saturday, Showers are occuring this afternoon mainly over areas north of the Highway 82 corridor.
precip as well as some of the low level ceilings have shifted to the east and northeast across the region. Temperatures across the CWA tonight should remain warmer compared to last night with the southerly low level flow keeping dewpoints in the 60s. Lows in the low to mid 60s should be common for much of the region. with the warmer of these temperatures over the western part of the CWA.
937 PM EDT Fri Oct 14 2016 The high will crest over the region tonight into Saturday.
41 An upper level trough over the Tennessee and Mississippi River Valleys will continue to deepen as it gradually moves east tonight. A moderately strong short wave associated with the trough has been producing showers and scattered thunderstorms in that area today and this will continue tonight. will continue to ridge south into Georgia through Saturday night.
735 PM EDT Fri Oct 14 2016 An upper level trough over the Tennessee and Mississippi River Valleys will continue to deepen as it gradually moves east tonight. A moderately strong short wave associated with the trough has been producing showers and scattered thunderstorms in that area today and this will continue tonight. will continue to ridge south into Georgia through Saturday night.
937 PM EDT FRI OCT 14 2016 Canadian high pressure will extend across central NC through the weekend. The thicker cloud cover to the west will aid to keep sfc temperatures a little warmer compared to the east tonight where clouds will be less obtrusive. The area of high pressure at the surface will remain nearly stationary Saturday and Saturday night, maintaining a relatively tranquil weather pattern. The low level northeast flow expected to advect additional moisture, possibly resulting in the formation of more stratocu across the northern coastal plain and the northeast Piedmont in the afternoon. High temps Saturday should be comparable or a degree warmer than high temps observed this afternoon. Under clear-mostly clear skies, overnight temperatures should vary from the mid-upper 40s north and west to the lower 50s southeast.
Rather sharp upper trough extends down along Mississippi River will work slowly east in the overnight and on Saturday.
Latest forecast sounding show strengthening easterly flow in the low and mid levels with enough moisture to enhance showers and thunderstorms by mid day Monday. The pressure gradient over the region will tighten as the ridge to the north strengthens, with deep and strong easterly flow over the area. The 12Z NAM and GFS both show a patch of cooler air aloft moving west over the area Monday (about -9C at 500 mb from 15 to 18Z Monday), but at the same time an area of drier air moves over the area (layer PW near 1.
/issued 307 PM CDT SUN JUL 17 2016/ Upper level ridging will continue to control our weather for the next 24 hours, and really right on through the entire 7 days.
The ridge aloft is xpctd to strengthen a bit this week and this looks to keep aftn shwr actvty in check somewhat. Monday looks more of the same with somewhat of a weakness in the subtropical ridge aloft to allow daytime heating to initiate scattered showers and a few storms from late morning into the afternoon hours. As the week progresses, guidance consensus still has an upper level ridge building and strengthening over the region.
Only a couple of showers now east of I65 should dissipate by 9 pm, thanks to loss of daytime heating and an upper high building over much of the sern US. No additional cloud cover is forecast overnight, so fog development is expected again tonight at KMSL, but should not be quite as dense, compliments of some evaporation today due to abundant sunshine and warmer temperatures. KTW (Issued 622 PM CDT SUN JUL 17 2016) (Issued 1254 PM CDT SUN JUL 17 2016) Midday surface analysis showed a ridge positioned across the Carolinas with light southerly flow across the Tennessee Valley. Despite ridging aloft, low level southerly flow and associated moisture may be sufficient for isolated/widely scattered convection on Monday.
Winds will diminish this evening, then increase again around mid to late Monday morning as a surface trof of low pressure remains in the area. /Issued 314 PM CDT SUN JUL 17 2016/ A ridge of high pressure will continue to dominate the forecast pattern for much of this week. It does appear, along with the ridge, that a persistent lee trough over southeast Colorado and southwest Kansas will help to keep our southerly winds on the breezy side.
1041 PM CDT SUN JUL 17 2016 Not a lot going on tonight as weak high pressure moves eastward across the forecast area. A return flow begins on Monday as the high moves off to the east. Strong baroclinic zone will be poised across eastern Nebraska to southwest Iowa to start Monday evening, and gradually will see larger-scale lift forcing increase as wave pushes around building ridge through the western plains and across northern Nebraska and southern South Dakota. Boundary in the lower to mid levels likely to linger a bit across northwest Iowa and into southwest Minnesota, and veered low-level jet should keep a persistent threat for thunderstorms until at least midday, especially in northwest Iowa until additional support of upper wave slides away to the southeast.
VFR conditions will prevail as the upper level ridge continues to build and strengthen over the Southern Plains. the upper ridge continues to strengthen and expand across the southern Plains.
1041 PM EDT SUN JUL 17 2016 High pressure exits tonight.
643 PM CDT SUN JUL 17 2016 Not a lot going on tonight as weak high pressure moves eastward across the forecast area. A return flow begins on Monday as the high moves off to the east. Strong baroclinic zone will be poised across eastern Nebraska to southwest Iowa to start Monday evening, and gradually will see larger-scale lift forcing increase as wave pushes around building ridge through the western plains and across northern Nebraska and southern South Dakota. Boundary in the lower to mid levels likely to linger a bit across northwest Iowa and into southwest Minnesota, and veered low-level jet should keep a persistent threat for thunderstorms until at least midday, especially in northwest Iowa until additional support of upper wave slides away to the southeast.
Upper level trough is now situated off the Pacific Northwest Coast. Multiple vort maxes are rotating within the upper level low.
814 PM EDT SUN JUL 17 2016 High pressure along the Mason-Dixon line will bring a mostly sunny afternoon. The next weather system in the form of a potent upper level disturbance and cold front will bring increasing clouds overnight and a few showers and gusty thunderstorms on Monday.
633 PM CDT SUN JUL 17 2016 A cold front was moving through the Arrowhead and far northwest Wisconsin this afternoon and should clear our eastern CWA this evening. More showers and storms were occurring ahead of a secondary cold front and were entering the Far northwest through north central Minnesota. High pressure will then build into the Northland tonight into Monday and provide dry conditions later tonight through Monday.
751 PM EDT SUN JUL 17 2016 High pressure exits tonight.
515 PM MDT SUN JUL 17 2016 Weak cold front is just about through the forecast area at midday and will continue moving slowly south. North-northeast winds behind front will keep a flow of slightly cooler but continued moist air across the region. Monday afternoon, thunderstorms are expected to redevelop over the NW portion of the CWA along the front and ahead of a short wave trough rotating around the western periphery of the upper high. This will be highly dependent on how far warm front is by Monday afternoon.
VFR conditions will prevail beneath high pressure aloft. Upper level ridging to dominate most.
945 PM EDT SUN JUL 17 2016 Bermuda Ridge over the FL Panhandle/Big Bend region has strengthened slightly over the past 12hrs, allowing the pgrad acrs the south half of the peninsula to tighten to arnd 2MB btwn Vero Beach and Miami.
Upper level trough along the Pacific NW coast will maintain a somewhat moist/unstable SW flow aloft across the Northern Rockies and MT through Monday.
702 PM EDT SUN JUL 17 2016 A warm front over Indiana will move through northern Ohio and northwest Pennsylvania tonight. A cold front over the western Great Lakes will move across the region on Monday.
647 PM CDT SUN JUL 17 2016 Quiet weather through Monday evening with no precipitation expected in the wake of a cold front that will continue to push through the region this weekend. At the surface a cold front was draped across the region, with northwest flow behind the front and southwest flow ahead of the front. Winds will decrease around sunset as high pressure builds across the region. This will lead to sunny skies with light winds on Monday, and high temps in the lower 80s.
825 PM PDT SUN JUL 17 2016 High pressure will bring fair and warmer weather this week. This moisture came in from the south in the clockwise flow around the western side of a building high pressure ridge over Texas. This ridge will expand slightly westward this week to bring SoCal some warmer weather.
853 PM EDT SUN JUL 17 2016 An upper level disturbance and cold front will bring increasing clouds overnight and a few showers and gusty thunderstorms on Monday.
(Issued 837 PM CDT SUN JUL 17 2016) Only a couple of showers now east of I65 should dissipate by 9 pm, thanks to loss of daytime heating and an upper high building over much of the sern US. For 06Z TAFs: High pressure building across the region will keep skies mostly skc overnight and into Monday.
A cold front, currently from NW WI-western IA-northern KS, is expected to become parallel to the mid-level flow during the Monday and slowly drop into central IL.
The best coverage should be south of the I-20 corridor Monday afternoon due to better deep layer moisture and a weak upper level disturbance which will move westward south of the center of the 5H ridge which should stay anchored across eastern Ok into western Ar.
(Issued 1254 PM CDT SUN JUL 17 2016) Midday surface analysis showed a ridge positioned across the Carolinas with light southerly flow across the Tennessee Valley. Despite ridging aloft, low level southerly flow and associated moisture may be sufficient for isolated/widely scattered convection on Monday.
It is worth noting that surface observations and doppler radar showed a boundary of southeast winds pushing up through the Las Vegas Valley with gusts of 20 to 30 mph and dewpoints rising into the lower to mid 40s.
Chattanooga Airport, TN 73 93 73 95 / 10 30 20 40 Knoxville McGhee Tyson Airport, TN 71 90 71 91 / 10 30 20 40 Oak Ridge, TN 72 91 71 91 / 10 30 20 40 Tri Cities Airport, TN 66 89 68 88 / 10 40 30 40.
1233 AM EDT MON JUL 18 2016 A warm front over Indiana will move through northern Ohio and northwest Pennsylvania tonight. A cold front over the western Great Lakes will move across the region on Monday.
A deep easterly flow remains in place around the periphery of a deep layer ridge which extends from the southern states east to Bermuda.
Adjusted overnight low temps to reflect a blend between latest guidance and persistence, with cooler temps favored over the areas that received more widespread coverage in rainfall this afternoon. Lows Monday morning will fall into the low and middle 70s. The increasing presence of high pressure both aloft and at the surface over the region, will keep rain chances at a minimum over the forecast area Monday.
1000 PM EDT SUN JUL 17 2016 A warm front over Indiana will move through northern Ohio and northwest Pennsylvania tonight. A cold front over the western Great Lakes will move across the region on Monday.
VFR conditions will prevail beneath high pressure aloft. /Issued 336 PM CDT SUN JUL 17 2016/ High pressure aloft has strengthened over the region today further reducing any potential for afternoon thunderstorms. This will largely remain the case for the upcoming week as high pressure dominates the weather pattern across the central U.
1036 AM EST Wed Dec 21 2016 High pressure will control the region's weather today. A cold front will cross the region Thursday, followed by high pressure to end the week.
A cold front will cause a wind shift today across Oklahoma and north Texas. /issued 410 AM CST Wed Dec 21 2016/ A cold front will move south across Oklahoma and north Texas later today and tonight, blunting the warming trend.
Another area of concern is over the Buffalo Ridge area where guidance is suggesting that stronger winds will also reside, but with uncertainty will leave advisory as is, though the day shift may have to expand the current headline. Clouds will decrease overnight, and in slightly cooler airmass temperatures will fall into the mid and upper teens.
Highs today will be in the lower to middle 30s and lows tonight will fall back into the middle to upper 20s.
We believe we should be able to cancel the High Wind Warning early, but will keep the 8 AM expiration for now.
Low cloud/fog satellite imagery shows lower cloud deck over the Lower Texas Coast has been steadily moving northward. But lower clouds are advancing northward along the Lower Texas coast. Another cold front will push into the region overnight and be near the coast by 12Z Thursday. The highs will be slightly cooler for Thursday.
633 AM EST Wed Dec 21 2016 Morning surface analysis shows an area of high pressure is centered just to to south across the TN Valley. These elements are combining and likely leading to slightly warmer temperatures than expected. That said, went with a blanket SPS for slick spots given much of this will translate to freezing fog. Also models are in decent agreement with a dry cold front progressing across the region from NW to SE toward dawn on Thursday.
and Thursday A clipper low pressure system will move through the region today and early tonight, bringing accumulating snow to much of north central and northeast WI. High pressure will build into the region later tonight into Thursday, resulting in clearing skies. Temperatures have been running above guidance in most places early this morning, and after yesterday's warmer than expected readings, have bumped up temperatures into the lower to middle 30s across most of the CWA today. Lows tonight should settle into the lower to middle 20s, with highs on Thursday reaching the upper 20s to lower 30s.
A dry cold front will move into the area from the west this afternoon and across the Ozarks Region this evening. This will result in a wind shift to the northwest and advection of cooler but seasonable airmass into the area.
903 AM EST Wed Dec 21 2016 With the sun angle being at its lowest this morning, freezing fog will be slow to burn off and will likely persist until around noon. So the forecast will be updated to lower morning temperatures and to extend the mention of freezing fog through the morning.