Aikyam-Lab/Synoptic-Bench huggingface dataset:
314 PM EST Sun Feb 12 2017 A cold front is moving through the eastern Tennessee Valley this afternoon. Ahead of the front, a prefrontal trough has triggered some scattered showers that are quickly racing through the Valley and across the Mountains into NC. The result will be a mostly clear night, allowing temperatures to drop close to the freezing mark across much of the Valley by sunrise. Along the high terrain of far NE TN and SW NC, a Wind Advisory is warranted which is in effect from 00-18z Monday. The breezy winds will continue on Monday, reinforcing the cooler and drier air mass.
240 PM MST Sun Feb 12 2017 Current surface analysis shows high pressure centered over southern Neb. Upper level analysis shows near zonal flow across the northwest and north central US, with low pressure cut off from the main flow across the southwest US and northwest Mexico. Quiet wx to continue through the short term period as upper low over the southwest US tracks well to the south of the region and ridge builds over the northwest US tonight and Monday. Ridge over the northwest US early in the week will slowly shift east into the plains late in the week.
Earlier this morning, a 78 mph wind gust was recorded at the Two Medicine Bridge DOT site. Brusda Lows below freezing with slightly above average high temperatures has slowed down snow melt this weekend.
1136 AM CST Sun Feb 12 2017 Breezy northwest winds will persist through much of the daytime today, as heights rise rapidly in the high plains. The strong surface pressure gradient persist through midday, then relaxes in the afternoon as the high pressure center moves southeast across the central Plains. Lows will reach the low to mid 20s. Out ahead of the trough winds will be out of the southwest early in the day, then transition to west/northwesterly and pick up in the afternoon with the passage of the boundary. With warming thermal profiles and decent mixing it will be a warmer day with highs in the 40s, approaching 50 along the Missouri River Valley.
The cold front is expected to move across the marine area generally after midnight tonight. Conditions will again deteriorate tonight as the cold front moves south across the flying area. Widespread VFR conditions expected to develop tomorrow morning in the wake of the cold front. Today's high temperatures should top out in the low to mid 70s near the coast and mid to upper 70s over more interior locations. A weak cold front will bring some spotty light shower activity into the area late this afternoon into the overnight hours. The cold front approaching from the north is projected to move out over the Gulf waters around midnight.
Also expect a reduction to MVFR as the low clouds increase along with any light precipitation.
408 PM EST Sun Feb 12 2017 A cold front will sweep through late tonight.
Hallock has been one of the cold spots, so the wind was successful in mixing in some of the warmer air there too. Surface cold front and period of stronger winds have passed east of the fcst area. Thus for the upcoming day expect a lighter west to northwest wind as high pressure slides southeast thru Montana. Remaining stratocu around the departing upper low will exit Baudette-Bemidji early this morning leaving plenty of sunshine for all areas today. Favorable west to northwest sfc wind argues for a tad warmer temps in the RRV then blended model guidance shows.
/issued 1021 AM CST Sun Feb 12 2017/ The cold front has reached the I-40 corridor as of 10 AM and will continue to move south this afternoon, clearing the southeast extent of the CWA by 3-4 PM. This will help to advance a cold front. High pressure will build into the region tonight and remain in place through Monday. Dry and much cooler conditions can be expected through Monday evening. An upper level low pressure system currently off the west coast of Baja California will move east and phase up with northern stream troughing by the middle of the week.
350 PM EST Sun Feb 12 2017 High pressure over the Florida Peninsula will break down tonight into Monday allowing for a weak cold front over the Tennessee Valley to move southward into Northern Central Florida.
Surface cold front is approaching with strong push of isentropic descent, AVA, and rapid increase in boundary layer mixing in CAA regime. Secondary band of rain in association with large scale sw trough to follow mid to late morning. This also holds deeper low level thermal troughing farther north and prevents any srn lake MI response either this aftn or evening and will dump prior mention. Ewd bend of this sys along with general poor wrn lake aggregate thermal troughing and scant moisture again heralds a limited lake response if any Wed. Completely dry otherwise by this afternoon/tonight with main focus turning to strong wnw winds in response to deepening Northeast US low pressure system.
232 PM EST Sun Feb 12 2017 A cold front will cross the area overnight followed by cool high pressure building in for the first part of the work week.
Snow cover in the Lower Treasure Valley will keep temps cooler there than models indicate, and this is already in the forecast. Dry, cool northwest flow aloft around a low-amplitude ridge along the coast. Little change in daytime temps through Monday, except a little colder Monday in the Lower Treasure Valley as surface inversion strengthens.
1117 AM CST Sun Feb 12 2017 Cooler air continues to advect across the local area early this morning behind a secondary cold front that is now moving across northern Kansas. In addition to the cooler airmass. Despite the cooler airmass advecting in. Then, with high pressure and mainly clear skies setting up across the region this evening. expect for a cooler night than we have seen of late, and adjusted down lows accordingly - although possibly not quite enough given the near ideal radiational cooling set-up. Through the Mon/Mon night period, with the better lift/precip chances will remain off to the south with the main upper low, that northern disturbance will bring chances of precipitation to southern portions of the CWA.
1045 AM CST Sun Feb 12 2017 The cold front is slowly making progress south, bringing in a cooler and drier airmass, as well as an elevated north wind flow. Today through Monday Night After a day of record breaking high temps acrs much of AR, a turn to much cooler weather wl commence today. The CDFNT wl cont to drop SWD thru the rest of AR by late this aftn, as an upr lvl trof apchs fm the NW. High pres wl settle over the FA tonight and Mon, with much cooler and drier conds prevailing.
Water vapor imagery shows the upper low continuing to move to the southeast toward central Baja California. The upper low will move east tonight and be over northwest Mexico south of the border of southeastern Arizona by 12Z Monday.
Earlier this morning, a 78 mph wind gust was recorded at the Two Medicine Bridge DOT site. Hoenisch Lows below freezing with slightly above average high temperatures has slowed down snow melt this weekend.
1128 AM CST Sun Feb 12 2017 THe cold front had made its way through the Ozarks early this morning with northerly winds noted across all of the region.
Quiet weather will dominate the region for the next few days through the short term period under high pressure both at the surface and aloft. The main concern will be late night and early morning patchy freezing fog in the Lower Columbia Basin and adjacent valleys.
258 PM CST Sun Feb 12 2017 The cold front has passed Tupelo and will exit the CWA by 4 PM. Cooler and drier air will advect into the Mid-South, with dewpoints in the 20s area wide by sunrise. High pressure will build over the area, maintaining relatively light winds. Temperatures are forecast to remain in the low/mid 50s.
350 PM CST Sun Feb 12 2017 Low pressure developing off the New Jersey coast this afternoon with the trailing cold front approaching Interstate 20 at this time. There is also a closed low over Baja California that will be a factor in our weather in a couple days. Away from marine influences, temperatures have warmed into the lower 80s in many areas. Dew points are generally in the lower and middle 60s. Cold front is on, or a little ahead of schedule, and is forecast to move through the CWA overnight. Expect Monday and Monday night to be dry and considerably cooler than the last couple days, but still near to slightly above normal.
Do anticipate a slightly cooler airmass to filter in to most inland areas as winds back to the ne/e. Still anticipate a sfc wave/low to develop along the stalled front in the vicinity of the Big Bend area on Monday in advance of the next approaching upper trof.
230 PM CST Sun Feb 12 2017 Main concerns in this forecast cycle are any low chances of rain with the cold front as it drifts south over AR.
1133 AM CST Sun Feb 12 2017 H5 analysis tonight has a closed low in the vicinity of Santa Barbara California. Good subsidence had set in overnight across western and north central Nebraska behind an exiting cold front. Further southwest, even with warmer H85 temps, lighter winds will limit mixing, so highs in the middle to upper 40s look on track. For tonight: High pressure will move southeast into Missouri and eastern Kansas.
Surface cold front is approaching with strong push of isentropic descent, AVA, and rapid increase in boundary layer mixing in CAA regime. Secondary band of rain in association with large scale sw trough to follow mid to late morning. This also holds deeper low level thermal troughing farther north and prevents any srn lake MI response either this aftn or evening and will dump prior mention. Ewd bend of this sys along with general poor wrn lake aggregate thermal troughing and scant moisture again heralds a limited lake response if any Wed.
Some areas especially along the immediate coast could see more fog by early this evening mainly ahead of a cold front that is expected to move across the region generally after midnight tonight. The cold front is expected to move across the marine area generally after midnight tonight. Conditions will again deteriorate tonight as the cold front moves south across the flying area. Widespread VFR conditions expected to develop tomorrow morning in the wake of the cold front. Today's high temperatures should top out in the low to mid 70s near the coast and mid to upper 70s over more interior locations. A weak cold front will bring some spotty light shower activity into the area late this afternoon into the overnight hours. The cold front approaching from the north is projected to move out over the Gulf waters around midnight.
108 PM EST Sun Feb 12 2017 A cold front will continue to move through the region over the next 6-12 hours, bringing some scattered -SHRA into the region.
The late morning update featured expansion of the Winter Weather Advisory to include the entire I 80 corridor and Westmo/Fayette/Preston Ridges. Deepening low pressure dragged a cold front through in its wake and across the Upper Ohio Region this afternoon. The tightening pressure gradient and cold advection with steepening lapse rates will support strengthening wind gusts and snow shower and squall development this evening and into the night, especially over the I 80 corridor and ridges. Strong wind gusts will gradually diminish with increasing distance from the low center on Monday. Condition improvement will be rapid as high pressure builds.
Otherwise the forecast is in good shape with high pressure south of the region. Current surface analysis places frontal boundary stretching through Minnesota into eastern South Dakota, with high pressure over the northern Rockies. Upper level analysis places low off the southern California shore while ridge remains over the Pacific Northwest and clipper system slides through the upper Midwest. Temperatures will be a bit cooler in the wake of the clipper, though will remain above average with mostly sunny skies. Upper level ridge amplifies over the western United States and gradually pushes easterly towards the plains during the middle into the later portions of the work week. Models push the ridge to the east for the weekend which may allow a few disturbances to slide through bringing some precipitation chances. VFR all terminals with high pressure south of the region.
1113 AM CST Sun Feb 12 2017 A cold front is moving across the area at this time, and will be through the CWFA by 12-13Z. Some low clouds just behind the front this morning will continue moving to the south-southeast, but the low clouds should dissipate and move out of the area by noon. Went with an operational MAV/MET compromise, which is about 5-7 degrees warmer than the short-range ensemble guidance. High pressure will build overhead tonight. With light wind and a mostly clear sky, should see temperatures drop back below freezing.
For Monday, models have trended a bit slower with the eastward progression of upper low and associated precip.
330 PM CST Sun Feb 12 2017 Gusty northerly winds will gradually relax this evening as high pressure settles into the region. Increasing cloud cover on Monday will mark the approaching influence of the upper low which is currently moving across Baja.
1013 AM MST Sun Feb 12 2017 Rex blocking pattern has set up across the western CONUS this morning. Upper ridging is building in to the region with strong subsidence taking over. Surface analysis shows high pressure centered just south of the CWA. Return flow will set up late today on the backside of the high pressure and gradually bring warmer air back into the CWA. Highs Monday will generally be about 5 degrees warmer than today. Upper ridging will continue to dominate much of the western to central CONUS through the week.
A low pressure system off the coast of northwest Mexico will keep moisture and instability over southern Utah through Monday. High pressure aloft to the west of Utah will bring a dry and stable air mass to northern Utah early in the week, then across the remainder of the region midweek.
The cold front continues to drift south, and will continue the rest of the afternoon to evening. / Issued 1045 AM CST Sun Feb 12 2017/ The cold front is slowly making progress south, bringing in a cooler and drier airmass, as well as an elevated north wind flow. Today through Monday Night After a day of record breaking high temps acrs much of AR, a turn to much cooler weather wl commence today. The CDFNT wl cont to drop SWD thru the rest of AR by late this aftn, as an upr lvl trof apchs fm the NW. High pres wl settle over the FA tonight and Mon, with much cooler and drier conds prevailing.
908 AM MST Sun Feb 12 2017 Update for morning fog and stratus extending from the eastern magic valley into the lower snake plain.
An upper-level low was centered over the Lower Colorado River Valley Sunday afternoon.
1249 PM EST Sun Feb 12 2017 High pressure will move offshore today, then a cold front will sweep through late tonight.
337 PM CST Sun Feb 12 2017 (Tonight and Monday) Much cooler temperatures across West Central Texas this afternoon with readings in the 60s to lower 70s. Aloft, a strong upper low just west of Baja will be the main player for our area for early this week. Highs will be in the lower 40s across the northwest Big Country to the near 60 across the Northwest Hill Country.
256 PM EST Sun Feb 12 2017 A strong cold front tonight will usher in some more seasonably cool air starting tonight.
1021 AM CST Sun Feb 12 2017 The cold front has reached the I-40 corridor as of 10 AM and will continue to move south this afternoon, clearing the southeast extent of the CWA by 3-4 PM. This will help to advance a cold front. High pressure will build into the region tonight and remain in place through Monday. Dry and much cooler conditions can be expected through Monday evening. An upper level low pressure system currently off the west coast of Baja California will move east and phase up with northern stream troughing by the middle of the week.
The visible imagery shows some really neat features as the cold front kicks in the back door. A cold front will impact the terminals this afternoon which will swing winds around initially to the north- northwest and eventually to the east-northeast by the end of the period. /issued 333 AM CST Sun Feb 12 2017/ Cold front currently draped across srn OK continues to dip sewd this morning, bringing temps in the 50s and very gusty winds to much of OK. However, sly flow will slowly return as the upper low just off of the srn CA coast moves into W TX Monday.
1147 AM CST Sun Feb 12 2017 The cold front extends from near a JDD, to N of a OSA/TXK, to ADF line as of 17Z, with low MVFR cigs expected to continue along and just ahead of the front as it shifts S of the I-20 corridor of E TX, as well as a SHV to MLU line by 20Z. The visible imagery shows some really neat features as the cold front kicks in the back door.
920 AM PST Sun Feb 12 2017 Upper level low pressure off the northern Baja coast will move into northwest Mexico tonight as a high pressure ridge develops aloft.
Approaching cold front currently just upstream with pre-frontal boundary across the mid-state. A cold front will advance across the mid-state today bringing scattered light showers and keeping MVFR cigs around the area.
The cold front will continue to push south through the entire region overnight, and it will be accompanied by mostly light showers as the capped airmass will not support any thunderstorm activity. Even with the cooler air moving in tonight and Monday, temperatures will continue to be above normal.
The cold front has slowed and is currently along a line from Austin to Del Rio. The models are in good agreement with timing of the trough axis as the cutoff low opens up and ejects across the lower Mississippi valley.
/issued 555 AM CST Sun Feb 12 2017/ /12Z TAFS/ Strong north winds with gusts over 30 KTS, behind a cold front, will produce crosswinds problems today for general aviation, especially on west to east runways. Stratus and light fog will otherwise clear 15-16Z as the cold front moves through. /issued 431 AM CST Sun Feb 12 2017/ (Today and Tonight) Cold front was about 40 miles north of the I-20 corridor at 330 AM. High clouds were spreading into West Texas early this morning, ahead of an upper low over Southern California.
240 PM CST Sun Feb 12 2017 The latest water vapor imagery has an upper low moving through the Great Lakes. This feature will push a surface cold front through Central Alabama by Monday morning. High temperatures the next few days behind the front will be 10-15 degrees cooler, but still just above normal.
Cloudy skies will reign through the remainder of the afternoon, with low clouds and fog filling in ahead of a mostly 'dry' cold frontal passage overnight. Lows will fall into the lower 50s behind the front near dawn across southeast Alabama and parts of southwest Georgia, and remain in the low to mid 60s ahead of the front.
331 PM CST Sun Feb 12 2017 Strong high pressure will remain over the central US through Sunday night before slowly sliding southeastward on Monday. Light westerly winds this evening will shift to to the south/southwest by Monday as the high moves southeast. Clear skies will result in overnight lows to drop into the low 20s across the entire forecast area.
Cold advection has kicked into full gear behind the departing cold front with temperatures falling back into the 50s this afternoon. High pressure will build into the area Monday setting up a mostly sunny day. After the cooler start, temperatures will bounce back into the mid 40s by the afternoon. Ridges may stay closer to 30. While mainly VFR conditions have returned for most of the area, a cold front sinking south will bring a brief 1 to 2 hour window of some MVFR cigs around mid afternoon. The other aviation concern is some gusty west to northwest winds which will accompany the cold front as it drops south across the area into early this evening.
1133 AM CST Sun Feb 12 2017 The main impactful weather concern will be on a light rain and possibly freezing rain mix early this morning with minimal impact to travel. With temperatures right around the freezing mark along and north of Interstate 90, snow may mix in at times. The cold air advection then drops off a bit by this afternoon so temperatures could actually rise a bit this afternoon into the lower to upper 30s. High pressure moves across the region tonight providing dry and quiet weather. Temperatures will warm nicely on Monday ahead of the trough.
125 PM PST Sun Feb 12 2017 Upper level low pressure off the northern Baja coast will move into northwest Mexico tonight as a high pressure ridge develops aloft.
Late this morning a ne-sw oriented cold front was located over southern Arkansas and extended through northeast Texas. Moisture remains very limited with and ahead of feature and mainly confined to the lower levels.
149 PM CST Sun Feb 12 2017 Cold front has cleared the mid state with only a few echoes showing up on radar. The clearing line has reached Land-between- the-Lakes, with a strong northwest flow already bringing cooler, drier air into the mid state. Skies will clear out from NW to SE during the next several hours, with temperatures plummeting to near freezing or below by tomorrow morning.
Expect LIFR ceilings and possibly visibilities to overspread the region tonight ahead of a cold front. At the surface, a cold front is analyzed from the Tennessee and Middle Mississippi Valleys through the Southern Plains. As low clouds scatter a bit, and the low-level airmass becomes a bit more homogeneous this morning, expect these showers to fizzle out.
303 PM CST Sun Feb 12 2017 Benign weather will continue across the forecast area in the short term with mild days and cold nights as area remains between northern and southern stream troughs. Closed upper low over northern Baja this afternoon will begin to track east into northern Mexico tonight, reaching the southern Rockies and Texas high plains on Monday.
as it phases with short wave energy in the bottom of the overall broader trough across the northwestern CONUS.
343 AM CDT Mon Apr 3 2017 A mid-level trough centered over the Ozark Plateau early this morning will accelerate northeast through the mid MS Valley today while a polar-branch vorticity lobe tracks from the northern High Plains into the mid MO Valley. On Tuesday, the 00z models continue to indicate a vigorous short- wave trough moving from the southern Rockies into the southern Plains and KS before shifting into the Ozarks Tuesday night.
Low pressure settling across the Great Basin will bring a few showers through Monday night in central Nevada. Then high pressure will bring a few very nice days during the week.
High temperatures today should remain in the lower-middle 70s near the Red River where winds will favor a more southerly direction, while some 80s appear possible across Central Texas where more of a downsloping wind component should prevail. Tuesday will be a nice and likely pretty toasty day ahead of our next cold front. Breezy southwesterly winds ahead of this front should allow temperatures to warm well into the 80s, and have sided along the higher end of the guidance envelope.
/issued 928 PM CDT Sun Apr 2 2017/ The mesoscale bndry generated earlier this evening from the strong convection over the Srn sections of Ncntrl LA has begun to build SE into Cntrl LA and just out of our CWA, although areas of strong overrunning atop this bndry has generated additional areas of convection producing moderate to at times locally heavy rainfall from the Lower Toledo Bend Country NE across the Srn and Ern sections of Ncntrl LA. Still can't rule out isolated/widely sct wrap-around -SHRA redeveloping late across extreme NE TX/SE OK/SW AR as the center of the closed low shifts NE out of N TX into Srn and Ern OK. Also lowered pops a tad across N LA Monday morning as the drier air continues to entrain E beneath the closed low.
631 AM EDT Mon Apr 3 2017 High pressure will move off the east coast today paving the way for increasing clouds ahead of a storm system that will move into the lower Great Lakes tonight.