Aikyam-Lab/Synoptic-Bench huggingface dataset:
352 AM EDT Wed Mar 25 2020 A warm front was pushing north across the central Midlands early this morning. It will be followed by a cold front crossing the area later this morning. Dry and mild weather will return this afternoon as begins to ridge in from the west. A short wave trough crossing the area early this morning will move offshore by sunrise. A warm front was moving northward across the central Midlands early this morning. High pressure will descend towards the area from the Mid Atlantic. Weak onshore flow will likely keep some moisture present but with the high promoting subsidence, clouds may be observed but precipitation is not expected through the day. The high will shift offshore Thursday night with an upper ridge axis moving over the southeastern US.
Forecast soundings further north along with the 00Z KBIS observed sounding show quite a bit of dry air in the lower levels up to 700mb so QPF was trimmed to mostly south of the I-94 corridor. Upper level heights build through the weekend as a ridge takes over the Northern Plains.
The leeside trough today will push east a fair distance across western Kansas, and this will act to keep winds fairly light much of the day. Late tonight and into Thursday, a cold front will be pushing south into Kansas, and there will be some fairly cold air behind this front.
Cold front continues to push across the southeastern counties, with some fairly dense fog reported in some spots ahead of it. Temps behind the front will be quite a bit cooler than yesterday and will top out by afternoon in the 20s to low 30s. Think that northward extent and amounts will be limited by high pressure building down behind the cold front. A cold front will move out of Canada and stall over the southern zones Fri night.
Meanwhile, a large upper ridge will build in the Gulf today with the ridge axis slowly passing over through the end of the period. Departing surface ridging will herald a return to southerly return flow late in the period with upper ridging still centered over the Gulf.
239 AM EDT Wed Mar 25 2020 Lingering showers will gradually come to an end today as high pressure builds over the area.
A cold front is located across N/C Alabama and Georgia, high pressure off the east coast of Florida, and southwesterly surface winds over the area. The cold front will slide south today towards the florida state line but moisture will decrease with southward movement. Highs will be in the low 80s through SE Alabama and SW Georgia with mid/upper 80s in the FLorida counties.
320 AM CDT Wed Mar 25 2020 After a comparatively cooler day yesterday, today will feel like summer across Southeast New Mexico and West Texas, as downslope warming yields highs in the middle 80s to lower 90s for most of the area, with some locations seeing their first 90 degree temperatures of the year. Even warmer temperatures are expected on Thursday, as a lee trough results in increased downslope flow and a thermal ridge remains anchored over the region.
/issued 912 PM CDT Tue Mar 24 2020/ A cold front is moving through the Mid-South this evening as the upper-level trough moves east into the Upper OH Valley. No rain (you heard that right) for Wednesday or Thursday with high temperatures in upper 60s and lower 70s tomorrow and in the low to mid 80s on Thursday. Aloft a low amplitude, broad midlevel trough is currently moving across central Arkansas accompanied by a 70kt midlevel jet and an approaching 140kt upper level jet streak.
5" in the ridges/higher elevations. A quick change to snow with cold advection in the wake of the departing system looks less likely for the highest elevations given warmer model trends with 850 Ts. Lingering showers will come to an end later this morning as the low crosses into the Mid-Atlantic and offshore. Skies will clear tonight with brief high pressure maintaining dry conditions through much of Thursday. Meanwhile, low pressure will cross the Great Lakes into Quebec, dragging a weak cold front across the area by Thursday evening. Initial rainfall with this front should remain north of the area and closer to the low where there is better forcing.
/issued 203 PM CDT Tue Mar 24 2020/ An upper trough was centered off the WA coast this morning as a flat upper ridge over Mexico extended up across the region.
The cold front is making its way through middle TN. The warm front has not been able to reach I-40 as previously expected and is sticking closer to the TN/AL state line. The cold front is progged to move across eastern Middle TN from now until 03Z.
114 AM EDT Wed Mar 25 2020 An approaching cold front will bring rainshowers to the area this morning, with isolated rumbles of thunder possible.
All models are consistent with this weekend being a scorcher and the deep layer ridge moves across the state into the Atlantic.
829 AM EDT Wed Mar 25 2020 Building high pressure will return dry conditions through early Thursday. Radar mosaic suggests rain exiting the forecast area associated with crossing low pressure. Critical thickness levels support the potential for a rain/snow mix in the highest elevations, however rapid progression of the disturbance combined with a warm ground will prohibit snowfall accumulation potential. Meanwhile, low pressure will cross the Great Lakes into Quebec, dragging a weak cold front across the area by Thursday evening. Initial rainfall with this front should remain north of the area and closer to the low where there is better forcing.
/issued 320 AM CDT Wed Mar 25 2020/ After a comparatively cooler day yesterday, today will feel like summer across Southeast New Mexico and West Texas, as downslope warming yields highs in the middle 80s to lower 90s for most of the area, with some locations seeing their first 90 degree temperatures of the year. Even warmer temperatures are expected on Thursday, as a lee trough results in increased downslope flow and a thermal ridge remains anchored over the region.
The upper trough is settling over the region as the main frontal zone has shifted south into central California.
424 AM CDT Wed Mar 25 2020 Cold front located over northern LA and MS is moving very slowly south this morning. But cloud cover could be enough to keep things a degree cooler today unless you are under the sunny areas.
728 AM EDT Wed Mar 25 2020 Weak low pressure will bring light rain late today into tonight and again on Thursday night.
1041 AM EDT Wed Mar 25 2020 Cold front remains situated across central AL/GA with just a few showers noted on radar across the CWA. A cold front is located across N/C Alabama and Georgia, high pressure off the east coast of Florida, and southwesterly surface winds over the area. The cold front will slide south today towards the florida state line but moisture will decrease with southward movement. Highs will be in the low 80s through SE Alabama and SW Georgia with mid/upper 80s in the FLorida counties.
Cool and unsettled conditions continue across the region today as a low pressure trough along the west coast moves inland. An upper level trough with low centered along the WA/OR border this morning will continue to gradually shift eastward through the end of the week, with disturbances ejecting out to the NE across the northern Rockies and MT in WSW flow aloft ahead of the weakening trough. Precipitation over southwest MT will pick back up as another disturbance associated with the main trough axis brings an increase in snow showers activity to the area again this afternoon/evening.
A trough of low pressure will linger over the western U. The trough and associated precipitation will move east of the region tonight.
Decent mixing combined with the WAA pattern and some pre-frontal compression should allow highs to warm into the low 70s area-wide this afternoon. The low over eastern CO will then kick out into southern KS and ride along the aforementioned front into east-central KS by midday tomorrow. The upper pattern becomes more amplified into the last half of the week as an upper trough digs over the western CONUS. A surface system will develop to our west in response to the approaching trough, and will allow the frontal boundary to move back to the north.
An upper low will slowly pull away from the area today with lingering showers for Western Washington.
416 AM MDT Wed Mar 25 2020 Latest WV/IR imagery showed a upper trough digging south along the Pacific coast with a low over the western WA/OR border. A cold front extended from northwest MN through southwest SD, west-central WY, northern UT and southern NV. 4 AM temperatures ranged from the lower 30s to lower 40s.
638 AM EDT Wed Mar 25 2020 Weak low pressure crossing the region will drag a cold front through the forecast area this morning. Dry and mild weather will return this afternoon as a high pressure begins to ridge in from the west.
A couple of weak weather systems will bring gusty afternoon and early evening winds, cooler temperatures and a chance of showers.
306 AM MDT Wed Mar 25 2020 Cool and unsettled conditions continue across the region today as a low pressure trough along the west coast moves inland. An upper level trough with low centered along the WA/OR border this morning will continue to gradually shift eastward through the end of the week, with disturbances ejecting out to the NE across the northern Rockies and MT in WSW flow aloft ahead of the weakening trough. Precipitation over southwest MT will pick back up as another disturbance associated with the main trough axis brings an increase in snow showers activity to the area again this afternoon/evening.
604 AM CDT Wed Mar 25 2020 (Today and tonight) As ridging builds in and 850mb flow turns westerly, today will see above normal temperatures and breezy winds.
400 AM MDT Wed Mar 25 2020 Positively tilted trough is laying across the Canadian Rockies back to the PacNW Coast this morning. There is cold air trapped in this trough which is creating a strong thermal gradient across the Intermountain West to the Central High Plains and why there is a 170+kt jet overhead. This trough will make slow progress to the East during the short term leaving us in a Southwest flow pattern aloft. This feature weakens through the morning but the surface cold frontal boundary will be the focus for precipitation and a temperature gradient over the next 24 to 36 hours before the main trough swings through. For this reason the highest chances for precipitation will be near the Wyoming border and colder temperatures forecast in this same region.
Cooler today and Thursday with light snow showers across most of northern NV and moderate snowfall across much of central NV.
1043 AM EDT Wed Mar 25 2020 Aviation section updated High pressure will settle over the area today and tonight and bring dry and warmer weather to central Indiana.
430 AM CDT Wed Mar 25 2020 Latest UA analysis and WV imagery show relatively flat ridging is noted acrs Mexico and the Gulf, with quasi-zonal flow over the southern CONUS, while a trough of low pres was moving into the Pac NW. South of the front, a warm and muggy airmass persists with temperatures in the lower 70s. 24 Mid and upper ridging over Mexico and the western Gulf will continue to build over the region the next few days.
546 AM MDT Wed Mar 25 2020 Positively tilted trough is laying across the Canadian Rockies back to the PacNW Coast this morning. There is cold air trapped in this trough which is creating a strong thermal gradient across the Intermountain West to the Central High Plains and why there is a 170+kt jet overhead. This trough will make slow progress to the East during the short term leaving us in a Southwest flow pattern aloft. This feature weakens through the morning but the surface cold frontal boundary will be the focus for precipitation and a temperature gradient over the next 24 to 36 hours before the main trough swings through. For this reason the highest chances for precipitation will be near the Wyoming border and colder temperatures forecast in this same region.
Isold showers could occur with a southward moving cold front but chances too low to mention. A cold front is located across N/C Alabama and Georgia, high pressure off the east coast of Florida, and southwesterly surface winds over the area. The cold front will slide south today towards the florida state line but moisture will decrease with southward movement. Highs will be in the low 80s through SE Alabama and SW Georgia with mid/upper 80s in the FLorida counties.
The persistent upper ridge continues to extend from eastern Mexico through the Gulf of Mexico and over southern Florida. Pleasant weather can be expected over the gulf coast waters through the remainder week as high pressure continues to ridge into the Gulf of Mexico.
Weak cold front will begin to sink south into region this evening. Otherwise, it will be rather warm with highs in the low 60s to mid 70s, depending on where the frontal boundary stalls out at.
238 AM PDT Wed Mar 25 2020 A low pressure system near the West Coast will move slowly southward and inland through Thursday night.
510 AM MDT Wed Mar 25 2020 A trough will swing through the region through mid-week. The remainder of the week will feature generally dry conditions and warming temperatures as a ridge builds into the northern Rockies. The next chance for precipitation is at the end of the forecast period with the next trough moving along the Canadian border.
Cloud cover however remains healthy but LL thermal trough is passing, and clouds are expected to decrease through out the day.
630 AM EDT Wed Mar 25 2020 Lingering showers will gradually come to an end today as high pressure builds over the area.
A frost advisory or a freeze warning may also be needed for coastal portions of Humboldt and Del Norte counties Thursday morning, as temperatures could potentially dip into the lower to mid 30s in protected areas, however just how cold it gets will depend on how quickly moisture exits the north coast.
622 AM CDT Wed Mar 25 2020 Warmer and dry in the short term. Clouds will diminish from west to east today, allowing temperatures to rise to highs ranging from the mid 60s east to the low 70s west.
Most locations will see a half inch or less of snowfall before temperatures rise above freezing this afternoon. -Mottice A trough will swing through the region through mid-week. The remainder of the week will feature generally dry conditions and warming temperatures as a ridge builds into the northern Rockies. The next chance for precipitation is at the end of the forecast period with the next trough moving along the Canadian border.
Highs are still expected to reach into the low to mid 60s with Louisville being the warm spot. Thursday looks dry and mild with low-amplitude upper ridging across most of the eastern CONUS, and low-level return flow developing.
Thursday night should see a break in the activity as the main trough begins to move into the Rockies. This will bring some shirt term ridging to the area.
Main upper low/trof located over the Pac NW building into the northern Rockies.
An upper trough will continue to bring scattered showers and cool temperatures to the area today. Showers should end by this evening as the trough slowly begins to shift through the area and drier air arrives. Skies will begin to clear tonight, allowing temperatures to drop below freezing in all areas with 20s in most lower valley locations.
119 PM EDT Wed Mar 25 2020 Dry conditions are expected through Thursday afternoon under high pressure. Ridging in the wake of crossing low pressure should support dry advection and an overall decrease in cloud cover through the remainder of the day. Meanwhile, low pressure will cross the Great Lakes into Quebec, dragging a weak cold front across the area by Thursday evening. Initial rainfall with this front should remain north of the area, closer to the low where better forcing for ascent is progged.
Surface winds will begin to diminish after dark, though LLWS of 35-40 knots within the lowest 0. Upper ridging will settle over the central GOMEX tomorrow and will place the region under southwesterly flow aloft as an upper trough digs southward across the West Coast. A surface lee trough will develop ahead of the upper low and should provide the region with breezy conditions.
Currently, high pressure is centered over southern Manitoba. This activity has diminished as it moves into stronger high pressure over ND, but an isolated snow shower is possible this afternoon and evening over northwest ND. On Thursday a weak cold front moves into central North Dakota and stalls. It will be warmer on Thursday with highs mainly in the 40s.
310 PM EDT Wed Mar 25 2020 A weakly amplified upper ridge centered over the Plains covers much of the CONUS. While at the surface, the center of high pressure is passing west to east through southern Kentucky. This will continue to move winds to the south as the western side of the high passes to the east. Lows near day break will drop into the 40s across southern Indiana and central Kentucky with the warmer end of temperatures to the west and tapering off to the east. Louisville will remain warmer than outlying areas. The pressure gradient between the high and low will tighten and strengthen surface winds (7-10 mph with gusts up to 20 mph) from the south driving temperatures into the mid to upper 70s for highs.
Upper trough will dampen by Sun but a cold front will cross the mid-state very early Sun morning. This system blows out of quick, then progressive flow brings high pressure across later Sun through Mon. and this system has a pretty good upper support with a presumed deep upper low.
216 PM EDT Wed Mar 25 2020 Dry and mild weather will continue tonight as high pressure begins to ridge in from the west.
The frontal boundary will continue to bisect Kansas on Thursday with very warm temperatures across southern Kansas, while much cooler air will be found over much of central and northern Kansas. Meanwhile low level moisture transport will increase for Thursday night north of the surface warm front with scattered to numerous showers and thunderstorms over much of south central and southeast KS.
339 PM EDT Wed Mar 25 2020 Low pressure off the Carolina coast will move east northeast into the Northern Atlantic waters through tonight, as an associated cold front moves southward down the Florida Peninsula and dissipates over the Lake Okeechobee region. High pressure over the Gulf of Mexico will then build into South Florida on Thursday keeping a northerly wind flow over the region along with dry weather. Temperatures on Thursday will be a little bit cooler than today with highs in the mid to upper 80s, except around 80 over the southern interior areas of South Florida.
BRB (Today and tonight) As ridging builds in and 850mb flow turns westerly, today will see above normal temperatures and breezy winds.
242 PM EDT Wed Mar 25 2020 A cold front moving through will bring drier weather later through Thursday. Much warmer temperatures are on tap for the weekend as high pressure becomes established offshore.
142 PM EDT Wed Mar 25 2020 Lingering showers will gradually come to an end today as high pressure builds over the area.
1149 AM MDT Wed Mar 25 2020 Latest WV/IR imagery showed a upper trough digging south along the Pacific coast with a low over the western WA/OR border. A cold front extended from northwest MN through southwest SD, west-central WY, northern UT and southern NV. 4 AM temperatures ranged from the lower 30s to lower 40s.
It does appear this is finally filling in as the upper trough approaches.
Cooler temperatures were observed in the eastern Ozarks, where clouds were slower to burn off. A mild night is expected as southerly breezes keeps the lower trop well mixed. It will be a fantastic day for outdoor activities, however, these warmer temperatures will also set the stage for shower and thunderstorms late Thursday evening.
Expect quiet weather and slightly warmer temperatures as the sun is able to make it to the surface a bit more today. ABM Chattanooga Airport, TN 47 74 59 83 63 / 0 0 0 10 10 Knoxville McGhee Tyson Airport, TN 44 73 59 80 63 / 0 0 0 10 10 Oak Ridge, TN 44 72 59 80 63 / 0 0 0 10 10 Tri Cities Airport, TN 40 70 53 76 58 / 0 0 0 20 10.
Upper ridge axis currently atop the region will make slow gains farther downstream by Thursday, yet winds aloft will remain anticyclonic with subsidence prevailing. Despite mean southerly flow in the lower levels through tomorrow, PWATs are actually forecast to fall to around 3/4 inch as 850mb winds veer from SE to SW and a dry thermal ridge from 850-700mb overspreads the region.
259 PM MDT Wed Mar 25 2020 The pattern, which features a positive tilt mid-level trough over the West and a stationary front across northern Utah and southwest Wyoming, will be quasi-stationary over the next three periods. Meanwhile, a strong jet on the leading edge of trough aligned just south of front will bring periodic disturbances which when combined with lingering moisture will bring periodic showers to the northern most zones of the forecast area tonight through Thursday night.
This should allow temperatures to achieve the warmer than normal forecast values. These clouds will decrease this afternoon as high pressure shifts quickly east and cold air advection shuts off. Northern portions, where the cool airmass is somewhat deeper, will see cooler maximums in the 70s today where southern portions will similar highs to yesterday in the mid 80s.
138 PM EDT Wed Mar 25 2020 Aviation Weak low pressure will bring light rain late today into tonight and again on Thursday night.
The persistent upper ridge continues to extend from eastern Mexico through the Gulf of Mexico and over southern Florida.
1145 AM MDT Wed Mar 25 2020 Aviation Section Updated Cool and unsettled conditions continue across the region today as a low pressure trough along the west coast moves inland. An upper level trough with low centered along the WA/OR border this morning will continue to gradually shift eastward through the end of the week, with disturbances ejecting out to the NE across the northern Rockies and MT in WSW flow aloft ahead of the weakening trough. Precipitation over southwest MT will pick back up as another disturbance associated with the main trough axis brings an increase in snow showers activity to the area again this afternoon/evening.
355 PM CDT Wed Mar 25 2020 A cold front has just exited southwest Nebraska with northwest winds 10 to 20 mph with gusts up to 30 mph. Highs Thursday should range from the mid 40s northeast half to the low to mid 50s southwest. Thursday night, the upper trough will move across the Great Basin with the upper flow become more southwesterly overnight.
1003 AM MDT Wed Mar 25 2020 Cool and unsettled conditions continue across the region today as a low pressure trough along the west coast moves inland. An upper level trough with low centered along the WA/OR border this morning will continue to gradually shift eastward through the end of the week, with disturbances ejecting out to the NE across the northern Rockies and MT in WSW flow aloft ahead of the weakening trough. Precipitation over southwest MT will pick back up as another disturbance associated with the main trough axis brings an increase in snow showers activity to the area again this afternoon/evening.
Cold front will move to near the Oklahoma/Kansas state line by late Thursday afternoon before stalling.
218 PM CDT Wed Mar 25 2020 An upper trough extended from WA to CA this morning with a ridge over Mexico and the Western Gulf.
High pressure will build in behind the system and bring dry weather for Thursday before rain moves back in Thursday evening. With temperatures generally in the upper 30s and low 40s, it is looking unlikely for any snow to mix in apart from the higher elevations of the Catskills, where temperatures struggle to climb out of the low and mid 30s this afternoon. Light rain comes to an end tonight with this wave moving out of the area and high pressure builds in. Dry and partly cloudy weather is expected for much of Thursday, while high pressure sliding eastward and a return to southerly flow brings in warmer temperatures with highs in the 50s even nearing 60F across the valleys.