Aikyam-Lab/Synoptic-Bench huggingface dataset:
816 AM EDT Mon Apr 24 2017 A cold front moving off the Downeast coast this morning will dissipate today. High pressure will build across the area tonight into Tuesday.
957 AM EDT Mon Apr 24 2017 Cold front moved through the region early this morning, and a few light showers and sprinkles were observed. Dry conditions with breezy westerly winds are forecast today, with cooler temperatures in the 70s to near 80 degrees. Low MVFR cigs along a few coastal sites this morning behind the cold front.
In addition, the low-level cloud cover has also been eroding nicely with just the Lake Cumberland region seeing most of the cloudiness this morning. Weak ridging will keep the short term dry other than perhaps a stray sprinkle or two in the Lake Cumberland region early this morning. Sunnier locations, such as from southern Indiana into north central Kentucky, should see temperatures rise into the lower 70s today. With the weak ridging moving in, the surface pressure gradient will be more relaxed resulting in lower wind speeds and less gustiness today compared to the past couple of days.
A mix of snow/freezing rain/rain is likely between Highway 2 and 200. Further south along the I-94 corridor we should see a mix of rain/freezing rain. Air temperatures are generally at or below freezing across most locations. However, surface temperatures are a few degrees warmer.
Enjoy the cooler temperatures and lower humidity this morning as it will rapidly change over the short-term, with increasing winds as well. High pressure moves east as low pressure develops over the Southern Plains tonight and Tuesday.
This advancing low pressure was resulting in an increased pressure gradient setting up over central KS early this morning, and this tight pressure gradient will continue to expand eastward across the CWA through the day. As the low-level jet diminishes during the afternoon hours, expect the wind gusts to diminish some as well, but still expect gusts of 30 to 40 mph. As the cold front advances into north central KS overnight, there is the potential for some scattered showers and isolated thunderstorms to develop early Tuesday morning across north central to far northeast KS.
Lows will be near- normal, while highs are expected to be about 5 to 10 degrees cooler than normal for late April.
1017 AM EDT Mon Apr 24 2017 A dry cold front continues to push across the North Country this morning, bringing a northerly wind shift and slightly cooler temperatures.
/Issued 343 AM CDT Mon Apr 24 2017/ As we go throughout the day today, high temperatures will be well above normal with high temperatures ranging from the mid 80s to some areas reaching the lower 90s. Going into Tuesday, a cold front will work its way through the region. In-conjunction with the surface cold front, a rather strong mid level vorticity maximum will swing across the base of a mid level positive tilted trough.
and Tuesday Latest surface analysis shows a cold front located across the southern Great Lakes early this morning. This front will lift back north as a warm front today, bringing warmer temperatures back to northeast Wisconsin this afternoon as winds turn to the southeast and become gusty this afternoon. Low pressure developing across the northern Plains will slowly push east over the upper Mississippi Valley tonight, then over northern Wisconsin on Tuesday. Despite the rain chances on Tuesday highs will be even warmer as the area is well within the warm sector and warm air advection allows highs to soar from the middle 60s across the north, with highs around 70 across central and east-central Wisconsin away from Lake Michigan.
There should be a dry spell tonight and the first part of Tuesday as high pressure aloft crosses the area.
1246 PM EDT Mon Apr 24 2017 Modest easterly flow will exist through the latter half of the day, sustained south of high pressure. * Low for ceiling at or below 5000 ft late tonight and Tuesday Another quiet day around southeast MI as high pressure sandwiched in between a cutoff low to our south and the main baroclinic zone laid out to our north.
907 AM CDT Mon Apr 24 2017 Back edge of precip continues to push eastward, though some lingering light rain/freezing rain around Dickinson and along portions of I-94 corridor. A mix of snow/freezing rain/rain is likely between Highway 2 and 200. Further south along the I-94 corridor we should see a mix of rain/freezing rain. Air temperatures are generally at or below freezing across most locations. However, surface temperatures are a few degrees warmer.
Cold front lies southwest-northeast across Tampa Bay and exiting into south FL by evening. Cold front across Tampa Bay with low clouds and a few showers.
Otherwise, low level winds will turn to the south to southeast as high pressure over southern Canada and eastern Great Lakes moves farther east and low pressure trough moves into the plains. Despite shift to more southerly winds, deeper column RH wl remain well southwest of the region and cutoff to the southeast by second low pressure system moving through the southeast CONUS. 925H temps warm to 13-15 degrees over inland areas which will allow temps to rise rapidly into the 60s by late morning and early afternoon with cooler temps likely by Lake Michigan. These winds will carry a weak short wave and this higher moisture across the area from the plains. Hence an increase in mostly high clouds likely for tonight with warmer temperatures.
925 AM CDT Mon Apr 24 2017 Latest satellite imagery shows an upper low spinning over portions of the southeastern CONUS.
646 AM CDT Mon Apr 24 2017 Ridge axis extending from west central Illinois through central into southwest Missouri will drift eastward today. Wind will turn to the south-southeast after the ridge axis passes and Warm advection will allow temperatures to rise above yesterday's highs. This looks reasonable given the warm April sunshine and yesterday's temperatures in the low to mid 70s so stuck pretty close to warm MAV guidance today. Overnight lows MOS guidance lows in the upper 40s to low 50s look reasonable with slightly warmer temperatures in the urban areas of St.
1116 AM EDT Mon Apr 24 2017 A cold front moving off the Downeast coast this morning will dissipate today. High pressure will build across the area tonight into Tuesday.
1237 PM EDT Mon Apr 24 2017 High pressure will be in control across the area through tonight.
Tuesday will see warmer temperatures as the weak dryline tries to intrude on the western counties.
Light and variable winds will gradually veer to the south and increase to 5-10 knots by this afternoon as surface ridging over the eastern half of Texas slides into the northwest Gulf. At 4 am high pressure was centered near Bastrop and should be sliding out into the Gulf this afternoon which turn winds to the south and gradually increase this afternoon. Dry airmass over the area will warm up quickly and by afternoon should 5 degrees warmer or so.
519 AM MDT Mon Apr 24 2017 Upper level analysis has broad ridge across the eastern CONUS with broad trof across the west. At the surface, low pressure is located across eastern Colorado, with an inverted trof extending northeast through south central South Dakota, and a cold front draped across Northeast Wyoming into southwest South Dakota. Upper flow remains southwesterly as west coast trof moves into the Pacific Northwest. High temperatures are only expected to be in the low 30s where precip is the heaviest, with some 40s possible across northwest SD and far south central SD.
Upper level trough is moving into the Pacific NW this morning and widespread precipitation is occurring over southwest Idaho and southeast Oregon. Expect some partial clearing this afternoon as a cold front moves through the region. Cold front in eastern OR will move across western ID 18Z-24Z with increased showers and scattered thunderstorms along the front. The area of low pressure causing the next round of shower activity and breezy wind remains off the coast of northwest Washington, and is expected to move southeast and inland by early afternoon. Models are indicating that the area of low pressure will become an open wave by the late afternoon/early evening hours. The trough axis will move through the area late tonight. Cooler temperatures anticipated through the period.
720 AM EDT Mon Apr 24 2017 A dry cold front will pass southward across the North Country early this morning, bringing a northerly wind shift and slightly cooler temperatures.
Once the low clouds clear this morning, VFR conditions will prevail through the remainder of the period. An upper low over the Tennessee Valley will move southeast today. This motion will likely keep the low clouds in place across the northeast zones through the late morning with clearing to the south and west. Clear skies and light winds tonight will allow temps to fall into the low 50s inland to upper 50s and low 60s along the coast.
Developing lee trough will bring south winds with gusts up to 25 KTS at KABI and KSJT from mid morning into the overnight hours. Highs are expected in the lower to mid 80s. The stronger winds will keep the atmosphere mixed overnight, with lows in the lower to mid 60s across the Concho Valley and Big Country.
1048 AM EDT Mon Apr 24 2017 Low pressure tracking along the East Coast should result in periodic rain chances mainly east of I 79 early in the week. Dry and warm weather is expected with mid week high pressure. Rain chances are expected to spread nwd east of the I 79 corridor through Tuesday as the low moves up the East Coast. Maintained likely to categorical numbers in the WV/MD ridges where the most favorable moisture and ascent is progged in proximity to the low. Rain chances should end Tuesday night as the low begins to pull away from the coast.
The only clouds of note today will be thin cirrus riding over the upper level ridge. Prominent upper low over northern Alabama this morning will continue to sink southward today, finally loosening its grip on our area. Temperatures tonight should only drop off to the lower 50s as the southerly flow persists through the night. Upper low currently off the western tip of Washington will be dropping southeast into the 4-corners region by Tuesday afternoon, helping to carve out a significant trough over the Plains.
Low pressure moving over Pierre now and continuing east through the course of the day has already dislodged some very cool air, with Mobridge having fallen to 38 degrees and sub-freezing temperatures just across the border into North Dakota. High pressure nosing out of Canada/North Dakota will provide a continuous feed of weak cold advection through the course of the short term. The high never settles overhead with a storm track just to the east, so we will never experience ideal radiational conditions, however 850mb temperatures will be 1 to as low as 2 standard deviations below climo.
/issued 348 AM CDT Mon Apr 24 2017/ A trough aloft digging over the western U.
Satellite imagery this morning is showing the short wave approaching the high plains with western high plains radars beginning to some the developing precipitation expected to reach the western FA by 12Z. As the precipitation lifts north an intensifies accumulating snow is expected to develop with 3 to 5 inches possible across the northern portions of Devils Lake basin, with the highest amounts expected for Towner and Cavalier counties. As the inverted trough swings through the area this afternoon and evening showers will develop with rain totals ranging across the southern half of the FA from trace amounts up to a quarter of an inch with northern valley and NW MN areas seeing a quarter to three quarters of an inch total.
An upper level low pressure system is spinning near the Olympic Peninsula this morning. This low will slowly move east across the forecast area over the next 12-24 hours. With this low moving across the area it will keep conditions cloudy with showers likely for most locations. For tonight, the mid-level low pressure system tracks across the Lower Columbia Basin as it gradually weakens. Toward daybreak Tuesday the low weakens further and pulls east. A low pressure system will track across the two state area bringing an increase in clouds and showers to the area today and tonight. The low pressure slowly slips east and some dry air may work its way into the western portions of the region later tonight and Tuesday.
The upper trough will continue to shift east of the region today, as ridging aloft gradually builds in from the west. As this happens, high pressure at the surface will likewise build into the forecast area from the west. The high pressure center will sit near the forecast area tonight.
823 AM EDT Mon Apr 24 2017 Low pressure tracking along the East Coast should result in periodic rain chances mainly east of I 79 early in the week. Dry and warm weather is expected with mid week high pressure. Rain chances are expected to spread nwd east of the I 79 corridor through Tuesday as the low moves up the East Coast. Maintained likely to categorical numbers in the WV/MD ridges where the most favorable moisture and ascent is progged in proximity to the low. Rain chances should end Tuesday night as the low begins to pull away from the coast.
1001 AM EDT Mon Apr 24 2017 An area of upper level low pressure will continue moving slowly east across the deep south today, as drier air remains in place over the Ohio Valley. A mid-level ridge will gradually build into the area by the middle of the week, allowing for increasing temperatures and generally dry conditions.
This, in addition to an 850 mb low-level jet, and surface warm front, will help create rain chances Tuesday morning in northern KS and northwest MO. In addition, the upper level trough will deepen providing more energy.
Precip continues to work eastward and have also removed western and southern tier of counties from the advisory area with precip either having ended or temps above freezing. KMIB reporting light freezing rain with latest ob. Back edge of precip continues to push eastward, though some lingering light rain/freezing rain around Dickinson and along portions of I-94 corridor. A mix of snow/freezing rain/rain is likely between Highway 2 and 200. Further south along the I-94 corridor we should see a mix of rain/freezing rain. Air temperatures are generally at or below freezing across most locations. However, surface temperatures are a few degrees warmer.
Cold advection stratus is lingering in the cyclonic flow over northeast portions of the forecast area and this is keeping things a bit cooler. Otherwise, the forecast is in good shape with weak high pressure building over the ArkLaMiss. /EC/ Prior discussion below: The high pressure center will sit near the forecast area tonight.
Warmer temperatures than yesterday morning were across the area this morning. High pressure that had been the hallmark of the weekend was moving out of the area this morning. High pressure will still rein supreme today before upper level clouds move into the area tonight. Have trended temperatures towards the warmer solutions.
952 AM EDT Mon Apr 24 2017 High pressure will be in control across the area through tonight.
A surface cold front over the Dakotas continues to separate a very chilly airmass to our north from the very mild airmass that remains over us. A weak but progressive upper level trough will continue to move northeast across the Northern Plains today which will allow the cold front over the Dakotas to drop through the forecast area tonight. This boundary begins to become more active and push southeast into Kansas and Missouri with overrunning pattern developing north of the front as the strengthening upper trough approaches the Central Plains.
Sfc ridging anchored over the region this morning will gradually shift E of the area this afternoon and evening.
Cold front pushing acrs the I-4 Corridor and approaching the Volusia coastal waters as of mid morning.
The latest surface analysis placed low pressure over south central South Dakota with a warm front extending east through central Minnesota into central Wisconsin. Dew point values are only in the lower 30s across much of the region all the way into northern Missouri and southern Illinois. The worst conditions will likely be across portions of northeast Iowa and southwest into central Wisconsin, where relative humidity values could fall into the lower 20s. A cold front will then swing through Tuesday night and we may see a few thunderstorms near and ahead of the front.
The greatest threat for strong/severe thunderstorms should occur Tue Night when a strong & deep wave digs SW from an intense cyclone (centered over MN) to Kern MN. The passage of this wave will sweep a cold front SE across KS to produce much cooler weather Wed & Wed Night. influence of the low level jet may lead to some low level wind shear for the early morning hours and again after 06z/Wed.
1030 AM EDT Mon Apr 24 2017 Update/Marine An area of high pressure will build into Ontario today. A low pressure system will attempt to move in from the west on Tuesday.
Didn't adjust highs for this afternoon, as temperatures in the lower to mid 60s still look reasonable. As this low moves further away from Kentucky heights will rebound and attention will shift to the flow pattern to the northwest. This mid level pattern will be in the process of developing a large trough over the Southern Rockies on Tuesday. Meanwhile, the closed low will be continuing its trek up the east coast - located over Cape Hatteras at this time. Given the good model agreement will favor a blended/consensus solution along with a lean toward the high res HRRR early on.
A low pressure system will track across the two state area bringing an increase in clouds and showers to the area today and tonight. The low pressure slowly slips east and some dry air may work its way into the western portions of the region later tonight and Tuesday.
Upper storm system will approach the area by Tuesday, with a 100+kt jet streak digging a long wave trough across the west. Cold front will move across Kansas and western Oklahoma during the day Tuesday, while moisture streams north.
After this period of unsettled weather, drier and warmer conditions are forecast through the weekend.
650 PM CDT Sun May 14 2017 A band of isolated showers will move across Sauk to near Madison near a weak warm front early this evening. Better chance area wide Monday night with a warm front. 925 temps rather toasty well into the teens celsius so warm day on tap though cooler again near the lake with an onshore southeast flow.
Lee trough will continue to bring gusty south winds over 20 KTS at times mid morning Monday through the afternoon. As for temperatures, low level moisture will increase and provide for slightly warmer overnight temperatures. Models suggest some low cloudiness possible by sunrise Monday morning, but models also tend to over estimate the extent of the low clouds the first night of better return flow. Highs on Monday about where they are today, reaching the low to mid 90s. (Monday night through Sunday) An upper level trough will be located across the Great Basin region Monday night, putting West Central Texas in southwest flow aloft.
941 PM EDT Sun May 14 2017 Weak low pressure and a cold front over Lake Erie will drop to the Ohio Valley today and become nearly stationary. High pressure from eastern Canada will build south across the area later today into Monday.
As a largely amplified trough over the western CONUS sends southwest upper flow across northeast Montana a weak embedded impulse will provide a new chance for showers and thunderstorms to the area late tonight and continuing into Monday. Given the proximity of the upper trough to the CWA, expect temperatures to remain cool as well with highs in the 50s to low 60s.
852 PM EDT Sun May 14 2017 Weak High pressure ridge will build in from the north with onshore NE Flow slowly weakening overnight and expect mainly dry conditions although a few isolated showers will be possible just off the Flagler county coastline. Winds will become near calm inland and support patchy inland fog late tonight/early Monday morning but visibilities will generally be in the 3-5 mile range with the best chance across inland SE GA closest to the high pressure center.
625 PM CDT Sun May 14 2017 High pressure. a upper level trough. As high pressure begins to move eastward.
1211 AM EDT Mon May 15 2017 Dry and warmer weather is expected for the first half of the week under high pressure. Building high pressure should result in dry weather and decreasing mid level clouds overnight. Western trough is projected to amplify and drift toward the Central CONUS by late in the week, pushing upper ridge from Mid-West to Eastern CONUS. Much warmer temperature and dry weather may be anticipated for much of the period.
The apex of the 500mb ridge across MN-Manitoba will continue to shift east in response to the large trough setting up across the western states. The initial low pressure system over the SD/MN border late this afternoon will sink across far southern SD and northwestern IA by daybreak. This will be while the next low rides up along the trough and ejects out of CO and eastern WY late in the day. A couple of boundaries/troughs will be set up across our region, which will likely be the focus for mainly elevated type showers and thunderstorms Monday afternoon.
High pressure continues to dominate the weather and only some passing cirrus are expected as cumulus have mixed out and dissipated. Overnight low should average 5 to 8 degrees warmer tonight compared to lows from this morning. A strong upper level ridge will provide a continuation of dry weather through Monday night. Lows tonight will be a few degree above this mornings lows, but still into the low to mid 50s. Ridging will continue across the eastern half of the CONUS, with troughing out west.
743 PM EDT Sun May 14 2017 HIGH PRESSURE SURFACE AND ALOFT WILL HOLD OVER WEST CENTRAL AND SOUTHWEST FLORIDA TONIGHT AND MONDAY. MOSTLY SUNNY SKIES MONDAY WITH SLIGHTLY WARMER TEMPERATURES. HIGHS IN THE MID TO UPPER 80S AT THE COAST TO THE LOWER 90S OVER THE INTERIOR AND SOUTHWEST FLORIDA.
Lows will be milder than last night, but will still reach the low 50s in the typically cooler locations.
The weak trough is passing through the Keys area and from satellite we can see warming cloud tops as they scatter out. The big picture for the rest of the week will be high pressure building over the Atlantic. The ridge axis will stretch across the Florida Peninsula with the Keys on the southern edge.
Dry weather will be the rule until mid week as an upper ridge moves across the Ohio valley. After that an upper low will swing out of the intermountain west and bring chances for showers and thunderstorms back to the area. Warmer than normal temperatures for this time of year can be expected through the forecast period. Temperatures are in the upper 70s to lower 80s with dew points in the low to mid 50s. Mostly clear skies are expected tonight with just few to scattered cirrus spilling over the top of the ridge. A ridge of high pressure sliding across the area will keep dry weather in place across central Indiana through the short term.
734 PM EDT Sun May 14 2017 Low pressure southeast of Cape Cod will push into the Gulf of Maine tonight, dragging a dry cold front through the mid-Atlantic this evening.
Northeast winds surge between frontal boundary to the south and high pressure centered across the southeast U.
Conditions are more favorable for severe storms tomorrow as an upper trough moves into southern California backing upper flow, increasing instability and shear, and causing a dryline to develop providing a low level focus. The trough will quickly move across the southwestern U.
Temperatures have warmed up into the lower 80s and upper 70s for most regions, and some fair weather cumulus have begun to pop up on visible satellite. Expect the warm and dry weather to continue through the rest of today as the high pressure remains nearly stationary. Temperatures will remain mild overnight Monday thanks to the higher dewpoints that advected in from earlier in the day.
High pressure continues to move over the Middle Tennessee making the TAFs VFR with mainly a wind forecast.