Aikyam-Lab/Synoptic-Bench huggingface dataset:
1254 PM CDT Mon Sep 11 2017 VFR through the period as high pressure dominates and mid to upper northerly flow from IRMA keeps the Gulf shut off. Drt should see the higher afternoon speeds just under 10 knots with direction just west of north. Mid/upper level ridge builds from the Rockies into Northern Mexico while a deepening mid/upper level low drifts from the southeastern states into the lower and middle Mississippi Valley with tropical cyclone Irma. Little change in temperatures is expected today with a warming trend beginning on Tuesday as a thermal ridge begins to build into our area.
This will lift a warm front northward through North Carolina later tonight through Tuesday. The northward surging warmer air will push a warm frontal boundary across the area ahead of onshore plume of moisture. -Vincent VFR conditions will prevail through daybreak this morning, however MVFR cigs will spread into central NC from south to north during the mid to late morning as a warm front to our SE slowly tracks to the N and NW into our region. Looking beyond 12z Tue, adverse aviation conditions are likely through Tue morning as a band of heavy rain tracks northward through the state, attending the warm front.
Otherwise, we're looking at a cooler day today across the coast/valleys as gradients are trending strongly onshore which will continue into Tuesday.
1140 AM MDT Mon Sep 11 2017 Water vapor shows rather flat upper ridge over the Northern Rockies and Northern Plains. At the surface, low center is located over south central SD with trof extending into eastern CO. Flat upper ridge expected to remain in place through mid week, leading to very warm temperatures. Upper level trof will dig through the Pacific Northwest during the second half of the week.
153 PM PDT Sat Sep 30 2017 Seasonable temperatures will continue into Sunday, but it will become much colder behind a strong cold front Sunday night.
304 PM CDT Sat Sep 30 2017 Upper ridge continues across area. Dewpoints to begin climbing just after daybreak as upper ridge centered btwn Ohio valley and great lakes shifts east, deepening easterly flow will also have a se component in low lvls, and moisture to finally reenter the area.
250 PM EDT Sat Sep 30 2017 Canadian high pressure will build into central NC from the north through Sunday, then linger overhead through mid-week. Canadian high pressure building into central NC tonight will maintain dry and seasonably cool conditions. If the wind stays up longer than expected, minimum temperatures may end up a couple of degrees warmer than forecast.
The more persistent rain coverage north of the low level circulation has shifted northward since this morning. Activity should linger late into the night as the low level circulation center drifts toward the west. Overnight mins in the low/mid 70s under mostly cloudy skies. Low pressure aloft over the Gulf of Mexico will drift southwest toward the Yucatan region while high pressure builds in through a deep layer over the eastern U.
1241 PM CDT Sat Sep 30 2017 Early morning satellite imagery together with GFS 500mb heights and winds showed a negatively tilted upper level trough approaching the high plains of the Dakotas, with a downstream ridge across Minnesota. An the surface the high pressure associated with the aforementioned ridge was located over Lake Superior, with a tightening pressure gradient toward the west and this will lead to breezy southeast winds, especially in southwest Minnesota. The dry southeast wind associated with this pressure gradient was advecting slightly drier air across the region, which will help to keep the precip associated with the aforementioned negatively tilted trough confined to mainly western Minnesota today, and then increasing eastward in coverage later tonight. The warm front associated with the low pressure system lifts into southern MN on Sunday.
1156 AM MDT Sat Sep 30 2017 A -25C core @ 500mb closed low will drop into the Pacific NW over the next 36 hours, with excellent dynamics and a strong upper level jet accompanying it. The cold core closed low will drop further south as a 100+ kt upper level polar jet reaches eastern UT and western CO Sunday morning. Showers and thunderstorms may continue across NE Utah and NW Colorado Sunday morning, but will further develop Sunday afternoon as the cold front associated with this system stalls somewhere near the I-70 corridor.
115 PM EDT Sat Sep 30 2017 Dry conditions are forecast through the middle of the week as high pressure builds across the Great Lakes and Ohio Valley. Cool temperatures today will gradually increase over the next few days as a southerly flow develops behind the high.
223 PM PDT Sat Sep 30 2017 A low pressure system developing over the interior western states will bring stronger onshore flow with periods of gusty west winds in the mountains and deserts.
113 PM EDT Sat Sep 30 2017 High pressure will shift into the mid-Atlantic through the weekend keeping us dry and cool/seasonal. Tried to blend in some of the lower- dewpoint grids in the guidance suite into the forecast to better account for this. Expect a dry, sunny day for the last day of September, with cold front to our east and a cool northwest breeze. Tonight, strong high pressure will build in from the north as the center moves from the Great Lakes into NY/PA. Lows tonight under clear skies will range from the mid 30s in the deeper sheltered valleys in the mountains, with upper 30s to lower 40s elsewhere west of the Blue Ridge, and mid to upper 40s east. High pressure, centered over the northeastern state, will wedge south into GA starting Sunday.
130 PM EDT Sat Sep 30 2017 Canadian high pressure will build into central NC from the north through Sunday, then linger overhead through mid-week. Canadian high pressure beginning to extend into central NC from the north northwest int he wake of the exiting sfc cold front. We may see a few more clouds over the far NE and E CWA as a pocket of moisture now correlated with precip over NY and adjacent areas tracks around the 700 mb anticyclone, pushing southward then SSW down the NC coastal area. Expect lows Sun night of 50-57, with dewpoints creeping back up as the air mass modifies and the low level flow draws in more Atlantic moisture. Ridging aloft and high pressure at the surface will persist through Saturday.
213 PM EDT Sat Sep 30 2017 Low pressure off the New England coast that has been bringing cool and breezy weather will gradually pull away this afternoon and tonight. A large area of high pressure over the Great Lakes will move over the eastern U. On the western ridges the winds will likely preclude it. The low off New England will weaken and elongate, pushing a weak low level trof south off the Mid Atlantic coast Sunday.
336 PM EDT Sat Sep 30 2017 Canadian high pressure remains established over the region tonight into the middle of the upcoming workweek.
Models continue to show some good breaks along the frontal convective line as it emerges from the higher terrain this evening. Rain will shift to snow in the high terrain, and will likely be enough overnight to close the Beartooth Pass.
231 PM CDT Sat Sep 30 2017 High pressure located at the surface over the Great Lakes is building down into the forecast area providing dry and less humid conditions than the past few days. Meanwhile, water vapor imagery shows an upper level low over the Southeast Gulf of Mexico with somewhat of a surface wave/weak low over Central Florida. Meanwhile, the upper level low over the Southeast Gulf will move west-southwestward across the extreme Southern Gulf of Mexico. The surface wave/inverted trough over Central Florida will move westward between these two systems along the northern Gulf of Mexico and into Texas through mid-week. Moisture ahead of the surface wave/inverted trough will begin to move into eastern portions of the forecast area on late Sunday.
Dry high pressure overhead will maintain clear skies and light north to northeast winds. /issued 452 AM CDT Sat Sep 30 2017/ Latest upper air analysis/water vapor satellite imagery showed upper ridging over NE Mexico/S TX with a distinct upper low over the East Central Gulf. At the SFC, an expansive high was centered over the northern Great Lakes, with a weak low pressure trof over the central/southern FL peninsula. Upper low over the Gulf is forecast to sink toward the SW toward the Yucatan and Bay of Campeche tonight and Sunday, while the weak inverted trof over FL migrates WWD underneath low to mid level ridging building into the Mid Atlantic.
1204 PM PDT Sat Sep 30 2017 Much cooler temperatures are expected for the weekend.
500 PM EDT Sat Sep 30 2017 Dry high pressure will dominate the weather pattern through next Saturday.
The broad upper level trough across the western states will maintain cool and unsettled conditions across northern and central Utah through early in the upcoming weekend.
345 PM EDT Sat Sep 30 2017 Strong ridge of high pressure continues to build in from the NE and associated subsidence should eventually scatter out some of the lingering stratocu that came in with the easterly fetch off the Atlantic this morning. Still cannot rule out some stray showers for the southern tier of the CWA late afternoon/evening here, though much drier and abnormally cooler airmass should dominate majority of area.
As the high pressure drifts east it will start clearing out skies around 00Z for all terminals. Remaining clouds over the Thumb associated with cool northeast flow off of Lake Huron will gradually dissipate today as drier low level air works into the region with building high pressure. This cool high pressure center of Canadian origin will provide temperatures very much in line with what is to be expected in late September with highs in the 60s and lows in the upper 30s to mid 40s throughout the weekend.
222 PM MDT Sat Sep 30 2017 A large Pacific low pressure trough over the western U.
110 PM EDT Sat Sep 30 2017 High pressure moving across the Great Lakes will provide mostly clear skies and seasonable temperatures this weekend. It will be a few degrees warmer Sunday with highs reaching the upper 60s to lower 70s.
324 PM CDT Sat Sep 30 2017 The region will be situated between high pressure to the east and low pressure to the west tonight, with a fairly tight pressure gradient likely keeping wind speeds in the 15 to 25 MPH range overnight. As the low and its associated frontal boundary reach the western part of the state late tonight, a 40-50 knot LLJ will aid in the development of precipitation, mainly across the central and eastern portions of the CWA.
With the addition of some some breaks and increased southerly winds in the afternoon, should see temperatures quite a bit warmer than yesterday and back close to averages for this time of year. Models continue to indicate upper level high pressure persisting across the eastern Conus, with a longwave trough across the Northern Tier through the Great Basin, which is progged to retrograde through the beginning of the work week.
1143 AM MDT Sat Sep 30 2017 08z surface analysis had high over the Great Lakes with low over southern BC, which had a frontal boundary into central NE and a lee trough into central WY. Water vapour loop showed upper low spinning across southeast MT moving northeast. Today, upper low moves northeast and weakens. Gradient will be rather tight with gusty southerly winds persisting over the SD plains and easing over northeast WY as the lee trough progresses east. Thermal ridge peaks with readings well into the 70s. Tonight, upper trough over southwest Canada into the Rockies will deepen. Sunday, upper trough continues to deepen as upper low develop over MT. -SHRA possible with TS across the south as cold front moves through rest of CWA.
As the ridge axis advances east of the region during the afternoon hours, high clouds will spread overhead.
An expansive high pressure cell will build over the eastern United States and western North Atlantic during the next few days.
Northeasterly flow will be on the increase overnight as the gradient tightens between high pressure to the north and a trough of low pressure over the Florida Peninsula.
120 PM EDT Sat Sep 30 2017 Canadian high pressure will build into central NC from the north through Sunday, then linger overhead through mid-week. Canadian high pressure beginning to extend into central NC from the north northwest int he wake of the exiting sfc cold front. We may see a few more clouds over the far NE and E CWA as a pocket of moisture now correlated with precip over NY and adjacent areas tracks around the 700 mb anticyclone, pushing southward then SSW down the NC coastal area. Expect lows Sun night of 50-57, with dewpoints creeping back up as the air mass modifies and the low level flow draws in more Atlantic moisture.
315 PM CDT Sat Sep 30 2017 High pressure dominates the weather map this afternoon as another mild day brings plenty of sunshine and seasonal temperatures to the Midwest. Upper level ridge stretches from the Great Lakes to the central Gulf Coast this afternoon and quiet and mild weather is expected to last through the overnight hours. Guidance has been consistently too high with overnight lows under the ridge, and although the cirrus may come in a little thicker. Winds should become more southeasterly after a somewhat variable evening under the ridge. Across the CONUS, a wave digs in over the western half of the country, amplifying the pattern considerably, and putting Central IL on the edge of the ridge.
1209 PM CDT Sat Sep 30 2017 Upper level ridging currently over the area will spread eastward through the remainder of the weekend. With the ridge axis not directly over the area, and a weak backdoor cold front that moved through earlier, temperatures will be bit cooler than yesterday. The other thing with the ridge shifting to the west and trough deepening in the west is it will set us up for persistent southerly to southwesterly through a deep layer of the atmosphere.
305 PM CDT Sat Sep 30 2017 Mostly sunny/clear skies this afternoon and evening will give way to increasing mid-high cloud cover overnight into Sunday as high pressure drifts eastward and a trough of low pressure enters the Dakotas. Southwest flow pattern will prevail through early week as a broad upper level ridge builds over the southeast US.
548 PM EDT Sat Sep 30 2017 Low pressure departs as high pressure builds from the west tonight and Sunday. This high pressure over the northeast builds slowly east through the upcoming week, moving offshore by mid week as a cold front approaches from the west.
High pressure will slowly move to the east of the area tonight and Sunday. The high will continue to bring quiet weather to the area during this time. Lows should drop into the lower to middle 40s over most of the area tonight, with upper 60s to around 70 for highs on Sunday.
323 PM EDT Sat Sep 30 2017 Low pressure departs as high pressure builds from the west tonight and Sunday. This high pressure over the northeast builds slowly east through the upcoming week, moving offshore by mid week as a cold front approaches from the west.
With the disturbance coming across the northern gulf and the ridge to the northeast the pressure gradient will tighten up some across the forecast area.
High pressure centered over Lake Huron will shift to the eastern Great Lakes tonight and into Sunday. Low pressure is still well removed from the area, but will begin to organize in lee of the Rockies. Highs will bump up to the upper 60s far NE to the lower to maybe mid 70s in Lasalle/Livingston counties. KMD 337 AM CDT Highly amplified upper pattern remains in place to start the week, with the aforementioned deep trough across the western 2/3 of North America and a strong upper ridge across the east. WFO LOT cwa remains in deep south-southwest flow into mid-week, setting the stage for a few days of much warmer than average temps.
High pressure to the east of the area will continue to bring quiet weather into Sunday. Wood High pressure will remain to the east of the area into the rest of the weekend. The high will continue to bring quiet weather to the area during this time. Near normal temperatures are expected this afternoon and tonight, with slightly warmer values on Sunday. Onshore winds will bring slightly cooler readings near Lake Michigan each afternoon.
345 PM CDT Sat Sep 30 2017 Drier/slightly cooler air is expected to continue filtering down into SE TX this evening. POPS should be- gin tapering off on Weds as low-level moisture decreases and the upper ridge begins to build over the area. Drier and warmer con- ditions to prevail the rest of the week.
222 PM EDT Sat Sep 30 2017 Dry high pressure will dominate the weather pattern through next Saturday.
An area of low pressure is centered near Daytona Beach at the surface, with the upper low offshore of SW Florida. Temperatures will be near to slightly above normal with highs in the upper 80s to lower 90s except across the nature coast where it will be in the lower to mid 80s, and lows in the lower to mid 70s. Mid/upper level ridging will build over the eastern U. and Florida for the first half of the week then the ridge shifts west with some troughing trying to move in from the southeast. At the surface a large area of high pressure will start the week over the northeast U. ridging south into the region with a breezy east to northeast flow setting up.
143 PM EDT Tue Apr 10 2018 Upper air pattern consists of a 500 mb trough over the upper Great Lakes this morning.
1023 AM PDT Tue Apr 10 2018 A cold front will bring rain today with breezy winds across the basin for the afternoon. /Pelatti 18Z TAFS: A cold front will sweep across east of the Cascades this afternoon. Cold front passage will result in a wind shift out of the west to southwest in the afternoon with gusts between 20-25 kts along with a small potential for thunderstorms affecting KGEG,KSFF,KCOE sites between 03-06Z Wednesday.
This will allow temperatures to rise into the low 50s to the east and near 60 to the west. Wednesday continued strong WAA will allow temperatures to rise into the low to mid 70s.
Most areas will remain dry through the work week, but then a low pressure system will bring rain chances to the area this weekend.
Skies are still expected to clear this evening though as the high moves in overhead and winds cut off near the surface. This could se the stage for area of frost, though only normally colder low- lying sheltered locations should flirt with the freezing mark.
but as High pressure shifts east, winds will become southerly this evening with windier conditions expected on Wednesday. Today Through Wednesday Night Fairly quiet conditions will be seen throughout the short term period as high pressure moves over the region. These SRLY winds will allow for much warmer and closer to normal temps Wed afternoon.
/issued 419 AM CDT Tue Apr 10 2018/ A sharpening of the upper level trough thats been in place over the eastern half of the country for the last few days is bringing a cold front through the CWA this morning.
130 PM EDT Tue Apr 10 2018 Cool high pressure will extend across the middle Atlantic region though Wednesday.
321 PM CDT Tue Apr 10 2018 18Z surface data has high pressure over the Plains with weak low pressure over Arkansas. Quiet and dry conditions will be seen across the area from late this afternoon through tonight as high pressure moves into the Great Lakes. On Wednesday southerly flow will bring warmer air back into the area as a storm system moves from Minnesota into Wisconsin. The better forcing is north of the area but the highway 20 corridor may get side swiped late Wednesday afternoon with some light rain.
The boundary will move to the Southeast this evening, with rain ending from the Northwest to Southeast, as high pressure builds to the Northwest.
Moderate northeast winds this afternoon will become weak and variable tonight as high pressure settles into the region.
This afternoon will be dry with a few breaks of sunshine as high pressure builds in from the Ohio valley. Temperatures look a couple of degrees cooler than with previous updates as a result but still in the upper 30's and low 40's for most places. High pressure will reside over the area tonight providing mainly clear skies and cold temperatures as lows drop into the lower to middle 20s. On Wednesday, high pressure will move to the east coast as the next low pressure system moves into eastern Canada. A warm front associated with this system will bring a chance for rain showers during the afternoon mainly west of I81.
The winds will become westerly this afternoon, which should bring warmer temperatures into the region.
The models have been consistent with a quick shot of warm air advection rain and possible thunderstorms associated with a low pressure system/warm front tracking northeast across central Wisconsin. The higher rainfall amounts should be north of Milwaukee and Madison, lower along the WI/IL border.
High Pressure over NE/IA/MO border is slowly moving into the CWA with the llvl clouds dividing the CWA in half. These clouds are keeping the north CWA temps up a tad while Srn KY will drop into the low to mid 30s. We'll see a mix of clouds and sun today with light w-nw wind with afternoon highs topping out in the lower to mid 50s. Lows Tue night will range from the upper 20s in the east to the lower-mid 30s in the west. This will translate in afternoon mercury readings in the lower to middle 60s.
1204 PM CDT Tue Apr 10 2018 Latest water vapor imagery in combination with RAP 500 mb analysis shows a large upper level ridge sliding east over the western U. At the surface, high pressure continues to push south through the region with strong low-level warm air advection already underway.
300 PM EDT Tue Apr 10 2018 A weak trough of low pressure will exit into the Maritimes tonight. High pressure will return Wednesday followed by another weak wave of low pressure Wednesday night. Weak high pressure will return on Wednesday bringing a mostly sunny sky Downeast and partial sunshine over the north. The trough will cross the area Wednesday night. Some spotty snow showers are possible with the trough, but with the air remaining dry it will be difficult for precipitation to reach the ground.
Temperatures will continue to rise over the next few hours under full sunlight, with afternoon highs ranging from the mid 60s in the Delta, to the low 70s elsewhere. The axis of the associated upper trough will swing across the area today, hastening the departure of the remaining clouds early today. I wouldn't be entirely shocked to hear of patchy frost in the cooler pockets in the north central/northeast part of the CWA.
This will give rise to some icing concerns for the northern zones where temperatures are expected to dip slightly below freezing to make for possible slippery spots, mainly on elevated surfaces such as north facing decks, or other shaded spots.
/ISSUED 1106 AM CDT Tue Apr 10 2018/ High pressure centered over Oklahoma will allow for north to northeast winds today.
350 PM EDT Tue Apr 10 2018 High pressure will bring dry weather to the region this evening, but cloudy skies will likely remain for many locations.
313 PM EDT Tue Apr 10 2018 Upper air pattern consists of a 500 mb trough over the upper Great Lakes this morning. Moderating west to northwest flow aloft will gradually be replaced by strong upper level troughing for the upcoming weekend. Clipper low pressure system drops through the Upper Great Lakes Wed night into Thu morning. Decent agreeement that most of the heavier precipitation in form of wet snow and possible freezing rain/sleet would be over south central with light snow over north and east.
The warming trend that started with daytime highs today will continue again tonight, with lows a few degrees warmer than last night.
A weak cold front will move through the area bringing light to moderate rainfall. A quick ridge of high pressure will move over the region Wednesday to bring a relatively dry day, except over southern Idaho County by late afternoon as the shower threat increases.