Aikyam-Lab/Synoptic-Bench huggingface dataset:
320 AM CDT Wed Apr 1 2020 Weak high pressure will move slowly east across the area over the next 24 hours, resulting in dry weather and near normal temperatures.
High pressure will bring a cooler air mass to the region with highs only in the upper 60s north of a Valdosta to Dothan line to mid 70s near the coast. This will be the first cooler than normal afternoon since the 8th of March! Temperatures will moderate as high pressure moves east and will be near seasonal levels Thursday and Thursday night.
1132 PM EDT Tue Mar 31 2020 Low pressure developing off the Carolina coast and an upper trough overhead will generate some light showers over Central PA overnight and in the morning. Conditions will improve Wednesday afternoon as high pressure moves in for a few days.
Latest mesoanalysis shows a warm front moving east across central NEB about to moving into the eastern counties of the CWA. Of which, well above normal temperatures are expected tomorrow ahead of the cold front for much of the Sandhills and southwest NEB with more mild temps just behind. Current thinking is precip chances will be limited, except isolated showers late in the afternoon with the cold front. Elsewhere, a ridge will be downstream extending from the Lower Missouri Valley across the Upper Midwest. There could be some very light freezing precip mixed in owing to lack of ice so worth watching, albeit low confidence at this time.
Forecast high temperatures are running 5-10 degrees below normal across the area today, a little cooler in the mountains, and near to 5 degrees below normal for Thursday.
1128 PM CDT Tue Mar 31 2020 Clouds will remain in place overnight as temperatures slowly fall into the low to mid 30s. North winds will persist through tomorrow as high pressure starts to slowly move east of the area.
1050 PM MDT Tue Mar 31 2020 Latest analysis shows the broad upper low complex is still in place over southwestern Canada and the northwestern CONUS. The main upper low is currently centered over Alberta with another upper low/trough dropping southward into the Pacific Northwest on the west side of the broad upper circulation.
224 AM CDT Wed Apr 1 2020 Drier weather is upon us over the next few days thanks to an approaching ridge from the Plains. Today will be a little cooler with northwest flow aloft behind the trough that brought rain yesterday. The upper ridge will continue to build and move eastward Thursday, which will warm up temperatures a bit more into the 60s Thursday afternoon.
Latest upper air analysis shows a deep upper level longwave trough situated over western Canada. Farther east, a more moist airmass may attenuate the warmup somewhat today and temperatures will be relegated to the lower to middle 70s. Have raised overnight lows especially over central and eastern sections of the forecast area where lows should stay in the low to mid 50s. Cooler temperatures will be pushing in behind the front with areas from Garden City to Wakeeney only seeing highs in the lower 60s.
Falling surface pressure in the lee of the Rockies along with the exiting ridge will result in increasing southerly winds today, with highs into the 70s for most areas. A strong upper wave swinging through the northwestern parts of the CONUS will drive a cold front into central KS by late Thursday, with an associated dryline extending southward through western OK.
A large upper low pressure system continues to spin over the northern Rocky Mountains. Can expect more showers and possible thunderstorms on Wednesday as the upper low pressure system and cold pool of air aloft persist creating an unstable atmosphere persists along with another weather disturbance rotating around the main upper low pressure system. The flow will become more southwest over the weekend as individual upper troughs/lows rotate around the large parent upper low as it drifts further west.
824 PM PDT Tue Mar 31 2020 Developing low pressure over the Rockies will strengthen onshore flow and deepen the marine layer inland Wednesday and Thursday. This will bring cooling and more night and morning low clouds west of the mountains, as the high clouds thin, allowing more sunshine each day.
This southwesterly flow will bring a couple of weak short wave troughs out of the southerly branch and the northerly branch that seem to phase somewhat together as they move east of the Rockies and over the central High Plains region Wednesday night. As weak short wave activity moves east of the Rockies late Wednesday into Wednesday night and a cold front moves into the area, a few light rain showers are possible across the far northern sections of the forecast area before the front approaches and moves through the area Thursday and Thursday night.
147 AM EDT Wed Apr 1 2020 Low pressure developing off the Carolina coast and an upper trough overhead will generate some light showers over Central PA overnight and in the morning. Conditions will improve Wednesday afternoon as high pressure moves in for a few days.
Northwest flow will settle in aloft today as an upper low tracks off the Atlantic Coast, and upper ridging builds in over the Central Plains. High temperatures will be a little warmer than what we saw yesterday, but only making it into the upper 50s to low 60s. Expect sunny skies to ring in the first day of April! With northwesterly flow continuing aloft, low temperatures tonight will once again drop into the low 40s to perhaps upper 30s in some locations under good radiational cooling. High pressure will remain in place near the region, keeping dry conditions in place through the end of the work week.
259 AM CDT Wed Apr 1 2020 High pressure will dominate the Midwest through Thursday bringing dry conditions.
1230 AM EDT Wed Apr 1 2020 Dry high pressure will build over the region on Wednesday and is expected to remain into this weekend. Low pressure is quickly pulling away from the region early this morning with a broad, cyclonic flow prevailing behind hit. Lows from the upper 40s well inland to the lower-mid 50s at the coast are on track. High confidence this period with high pressure bringing a return of dry weather and mostly cooler than normal temperatures generally in the 60s/70s during the day and 40s at night.
353 AM CDT Wed Apr 1 2020 Water vapor imagery at 08Z shows nearly zonal flow over the area with a broad upper low circulating over the Pacific Northwest into southwestern Canada. At the surface, high pressure is well to our northeast toward the Great Lakes and Hudson Bay regions while low pressure is noted over the eastern Rockies ahead of the upper low. Late this morning into the afternoon, weak ridging will amplify over eastern KS while lee troughing deepens in eastern CO. With the combination of these gusty southerly winds, increased WAA, and good mixing, have trended on the warm side of guidance for temperatures today with highs in the low to mid 70s across the CWA.
High clouds will likely cut back on some of the highest wind gusts making it to the surface. Highs today are still expected to make it above normal despite the high clouds. A cold front will push south into the Oklahoma Panhandle on Thursday. At this time it looks like any showers or thunderstorms that may develop with the dryline and cold front intersection will stay northeast of the CWA, so have left pops out for now.
106 AM EDT Wed Apr 1 2020 Low pressure will bring light to moderate rain tonight. Behind the departing system, cooler and drier air will build across the area through the weekend. Clouds should gradually clear from west to east late Wednesday morning through the afternoon as high pressure builds in. Clearing skies and lighter winds Wednesday night should allow good radiational cooling, and lows should reach the lower 40s away from the beaches. Highs in the upper 60s and lows Thursday night in the low 40s.
A cold front will cross northern and central Utah late Wednesday through Thursday. A weak disturbance and its associated cold front is making is way across northern Utah this evening. The cold front as of 9pm this evening was located across the southern third of the Great Salt Lake. Temperatures have fallen in the low to mid 40s along the Idaho border while its still near 60 or upper 50s south of this front.
Meanwhile, the upper level ridge will traverse through the Four State Region today and setup just to our east.
This will force WAA to move into the area and help create a nice spring day with highs in the lower 70s and mostly sunny skies. Lee-side troughing and cyclogenesis overnight will help develop a LLJ from TX up through MN which will provide isentropic accent over the region going into Thursday morning. A cooler airmass will start to advect down through the northern Plains Thursday with a cold front extending down into Nebraska by the afternoon.
The high will allow winds to continue to lighten during the day Wednesday, bcmg VRBL or SE after 01/18Z as the center of the ridge passes east of the area. /issued 307 PM CDT Tue Mar 31 2020/ Nice weather is expected for the next couple of days as a high pressure system brings a dry continental air mass to the region. Rua A cold front has swept through the forecast area with a drier continental air mass now settling in. This air mass will persist for the next few days bringing with it cooler more seasonable conditions, especially at night, along with mild days. The high pressure system that will bring the more seasonable conditions will move east to the Mid-Atlantic region by Thursday.
A mid level trough from the lower Great Lakes to the Mid-Atlantic coast rotates off the coast by early Thu as ridging from northeast Mexico to the northern plains shifts east. a low just off the VA/NC coast tracks toward New England coastal waters with a trailing cold front sweeping down FL. Canadian high pressure stretching across the upper Great Lakes to the TX/northeast Mexico coast shifts into the eastern U. A cold front currently in Levy county moves south today with clearing skies and cool dry air in it's wake.
Clear skies and seasonable temperatures are expected today and tonight in the wake of the cold front.
The warming trend will continue today and tonight, with temperatures remaining warmer than usual early April temperatures.
548 AM CDT Wed Apr 1 2020 Weak high pressure will move slowly east across the area over the next 24 hours, resulting in dry weather and near normal temperatures.
403 AM CDT Wed Apr 1 2020 Some patchy fog developing over the region tonight under the clear skies, but expect that to burn off early as high pressure builds across the south. Winds will be mostly northerly early, but expect them to be light overall under the ridging. Sunny skies today but a cooler and drier airmass in place will limit the high temperatures to mostly the lower 70s, with the northern tier of the state struggling to get out of the 60s.
Most of the model guidance indicates the potential for at least some isolated activity through the day, as additional short wave energy drops southeast on the backside of the trough, brushing our region. As such, lowered the highs a few degrees, with upper 40s to around 50 degrees expected. The deeper and normally colder valleys may see patchy frost late tonight into early Thursday morning, along with some patch fog where it is slightly warmer. Thursday as a whole, however, looks to be partly cloudy and much warmer, with highs ranging from the upper 50s to lower 60s across the area by the afternoon.
/issued 450 AM CDT Wed Apr 1 2020/ We're finally beginning to dry out across the region as high pressure can be seen building in over eastern CONUS on satellite imagery and analysis charts. A ridge will continue to build over the region though the start of the weekend.
530 AM CDT Wed Apr 1 2020 Flow aloft becomes southwesterly today as a narrow corridor of upper ridging builds in.
Some patchy fog developing over the region tonight under the clear skies, but expect that to burn off early as high pressure builds across the south. Winds will be mostly northerly early, but expect them to be light overall under the ridging. Sunny skies today but a cooler and drier airmass in place will limit the high temperatures to mostly the lower 70s, with the northern tier of the state struggling to get out of the 60s.
Latest 500mb heights suggest an upper level ridge building over the region at that time with dry and mild weather conditions expected.
Temperatures will be mild with highs in the lower 70s. Behind the cold front, there will be a chance for some showers or light rain. Temperatures tonight will be cooler in the northwest, but warmer in the southeast where the south winds will keep temperatures from falling as quickly. The cold front will push through the rest of the forecast area Thursday morning. Temperatures will be cooler across the area, but the northwest will be much cooler and the southeast will be warmer since the front will not move through until Thursday morning. Precipitation should be light, but there is a concern for some freezing drizzle.
636 AM CDT Wed Apr 1 2020 High pressure at the surface and aloft will keep VFR conditions at all sites throughout the entire period. Meanwhile, the upper level ridge will traverse through the Four State Region today and setup just to our east.
A large upper trough remains in place over the western CONUS today. The axis of the trough will move through later this morning into the afternoon hours. With the axis of the trough moving through today, it still looks to be a bit unsettled, with mainly mountain snow showers, though some lower elevation rain showers can not be ruled out either.
619 AM CDT Wed Apr 1 2020 High pressure will dominate the Midwest through Thursday bringing dry conditions.
While we did start off clear in areas just west of I-65, the low clouds have filled back in, except for our western row of KY counties. As we get more mixing this afternoon, areas west of I-65 should see the low clouds start to break up and skies look to become partly cloudy. High temperatures will generally be in the lower and middle 50s, but some locations east of I-75 may not make it out of the 40s where cloudiness will be more persistent. Tonight a long surface pressure ridge reaching from the Great Lakes to the central Gulf coast will bring calm winds and clearing skies. Winds will be light out of the east, so warming will be limited with highs only reaching the low to mid 60s.
A trough of low pressure at the surface and aloft extended northwest into Pennsylvania, along with a low-level easterly flow of moist air off the Western Atlantic.
One more grungy morning is in store for SE Michigan as an inverted trough departs the region early today. The trough may be sufficient to generate a few more sprinkles early on but main forcing/lift has departed the region. Did keep highs on the lower side /upper 40s/ with the anticipation of clouds sticking around through peak surface heating hours. Further clearing is on the way later this evening and tonight as ridging just upstream undergoes amplification in response to a Pacific wave digging into the northern Rockies. Lows tonight fall to the lower 30s - mid 30s Metro Detroit - given expected boundary layer decoupling and mostly clear skies. 850mb temps hovering around 0C translate to highs rebounding to the mid 50s - cooler along the immediate Lake Huron shoreline with light northerly winds in place.
A dry cold front will push through the area on Wednesday, keeping gusty winds in the Kern County mountains and desert. A trough over the PacNW keeping a moderate onshore flow across N CA. Wind should diminish during the mid morning but may pick up again later in the afternoon as another disturbance moves through the trough increasing pressure gradients across central CA interior.
With plenty of sunshine, temperatures should reach into the lower 70s. /28/ Prior discussion below: Some patchy fog developing over the region tonight under the clear skies, but expect that to burn off early as high pressure builds across the south. Winds will be mostly northerly early, but expect them to be light overall under the ridging. Sunny skies today but a cooler and drier airmass in place will limit the high temperatures to mostly the lower 70s, with the northern tier of the state struggling to get out of the 60s.
High pressure nearly overhead will result in mostly clear skies and light easterly winds through much of the day. Winds will turn more southerly overnight as the high begins to shift off to the east. /issued 447 AM CDT Wed Apr 1 2020/ Late night sfc analysis shows high pressure centered just to our nw. Water vapor imagery shows a dry nwrly flow in place aloft behind troffing over the ern CONUS while EPac moisture is noted upstream flowing over ridging in place over the sern Rockies/TX. Conditions remain cooler than recently with just an enhancement of cirrus expected as moisture continues to spill over the approaching ridging aloft.
432 AM MDT Wed Apr 1 2020 Current WV imagery shows an elongated trough slowly pushing through the Pacific Northwest and will be the main weather driver this afternoon and evening. The I-80 corridor from Cheyenne to Sidney could see freezing drizzle Thursday morning and early afternoon before snow showers move through. Additional areas that may see freezing drizzle, but for a shorter period of time include areas along and south of a line from Wheatland to Alliance.
An upper low over western Canada and the Pacific Northwest will shift eastward today. Dry northerly flow will develop behind the departing low as Pacific ridging extends eastward. Valley highs today are expected to be about 5 to 10 degrees cooler than yesterday, generally in the mid 60s.
Warmer than normal temperatures last into the weekend, with breezy winds during the afternoon today and tomorrow. We can certainly expect to see cooler temperatures, although when that occurs depends on how quickly the low makes its eastward progression.
With high pressure building over the OH/TN River Valley, a light northwest to northerly wind expected today.
As high pressure builds in the warm air advection begins to weaken this should keep the showers out of southern Wisconsin this morning. Light winds and small waves continue through the morning hours and into the afternoon as high pressure builds into the area. These quiet conditions are due to the upper level ridge that is moving in today, causing high pressure to set up over the region.
337 AM MDT Wed Apr 1 2020 Water vapor shows broad upper low over southwest Canada and the northwest CONUS. At the surface, low is deepening over eastern MT with trof extending eastward through western SD. Gusty northwest winds will develop behind the cold front, with a wide range of highs; mid/upper 30s from northeast WY and northwest SD to the mid/upper 60s over south central SD. There will be enough warm air aloft to support a wintry mix across south central SD, with the possibility of a tenth or two of freezing rain before thermal profiles become supportive for all snow Thursday evening.
Water vapor imagery at 08Z shows nearly zonal flow over the area with a broad upper low circulating over the Pacific Northwest into southwestern Canada. At the surface, high pressure is well to our northeast toward the Great Lakes and Hudson Bay regions while low pressure is noted over the eastern Rockies ahead of the upper low. Late this morning into the afternoon, weak ridging will amplify over eastern KS while lee troughing deepens in eastern CO. With the combination of these gusty southerly winds, increased WAA, and good mixing, have trended on the warm side of guidance for temperatures today with highs in the low to mid 70s across the CWA.
450 AM CDT Wed Apr 1 2020 We're finally beginning to dry out across the region as high pressure can be seen building in over eastern CONUS on satellite imagery and analysis charts. A ridge will continue to build over the region though the start of the weekend.
531 AM MDT Wed Apr 1 2020 Water vapor shows broad upper low over southwest Canada and the northwest CONUS. At the surface, low is deepening over eastern MT with trof extending eastward through western SD. Gusty northwest winds will develop behind the cold front, with a wide range of highs; mid/upper 30s from northeast WY and northwest SD to the mid/upper 60s over south central SD. There will be enough warm air aloft to support a wintry mix across south central SD, with the possibility of a tenth or two of freezing rain before thermal profiles become supportive for all snow Thursday evening.
915 AM EDT Wed Apr 1 2020 High pressure slowly building in from the northwest will bring cooler and drier air to the region through the weekend.
An attendant cold front extends southwestward across the southern Florida Peninsula and southern Gulf of Mexico. A noticeable air mass change will set in by late afternoon, as incoming air trajectories transport slightly cooler and drier air into the Florida Keys. Fresh west breezes will shift northwest following the passage of a weak cold front.
Temperatures are already much cooler than yesterday morning, coming in around 10-12 degrees cooler in most areas. This will also translate to a cooler afternoon with highs in the mid 70's to low 80's, which combined with lower humidities will make for a very pleasant day. A tight pressure gradient between a cold front over southern Florida and high pressure building into the southeast U. Will also keep the high risk of rip currents advisory at local beaches through this evening. As high pressure builds in over the SE U.
Accompanying the drier airmass is noticeably cooler temperatures today, with afternoon highs only expected to reach the low 70s to the north to low 80s south of Orlando, values that are near to even slightly below normal for April 1st. Tonight, temperatures will fall further, with lows in the lower 50s over the interior to upper 50s at the coast.
447 AM CDT Wed Apr 1 2020 Late night sfc analysis shows high pressure centered just to our nw. Water vapor imagery shows a dry nwrly flow in place aloft behind troffing over the ern CONUS while EPac moisture is noted upstream flowing over ridging in place over the sern Rockies/TX. Conditions remain cooler than recently with just an enhancement of cirrus expected as moisture continues to spill over the approaching ridging aloft.
Drier weather is upon us over the next few days thanks to an approaching ridge from the Plains. Today will be a little cooler with northwest flow aloft behind the trough that brought rain yesterday. The upper ridge will continue to build and move eastward Thursday, which will warm up temperatures a bit more into the 60s Thursday afternoon.
There may be just enough instability for some lightning strikes west of the MS River as a weak cold front approaches.
High pressure conditions will continue as the weak upper level ridge passes over the region. Removed any mention of light drizzle tonight, as the system to the west has slowed down, and expect high pressure and dry air to prevail. High pressure will depart by the evening as a front approaches, and rain could arrive in central Wisconsin as early as the late afternoon.
High pressure and associated drier air centered across northern Ontario will continue to build southward into northern Michigan through Thursday. anchored on the west end by an upper lows over British Columbia/Alberta.
The primary concerns in the short term period include the ongoing Red Flag Warning across Stanton, Morton, and Stevens counties and the possibility of light freezing drizzle late Thursday into Thursday night mainly east of line from Gove to Dodge City to Coldwater, Kansas. A cold front pushing across northwest Kansas tonight moves into southwest Kansas on Thursday. As temperatures drop below freezing through the remainder of the night, the area of light drizzle will likely transition to freezing drizzle. With soil temperatures above freezing, most paved surfaces will not accumulate any ice. However, there is a possibility of elevated surfaces receiving a light glaze as their temperatures also drop below freezing through the night.
334 PM CDT Wed Apr 1 2020 High pressure will dominate the Midwest through Thursday bringing dry conditions.