Aikyam-Lab/Synoptic-Bench huggingface dataset:
314 PM MST Fri Mar 9 2018 Afternoon upper level Water vapor Imagery showed a textbook upper level low over northwestern Montana and the Idaho Panhandle. This upper low was translating southeast towards the Dakotas and the Northern Plains. This cloud cover will limit the already warm diurnal temperatures to the lower 60s across the area this evening. A high pressure ridge will amplify to the west of the area through the weekend.
612 PM EST Fri Mar 9 2018 Broad area of low pressure over the Great Lakes will move east over Nova Scotia Saturday. An area of high pressure will build over the area this weekend. A trough axis moving into northwestern Ohio at this time is helping to support stratocu/shower activity. The lake induced instability is marginal, but when combined with the jet energy, trough axis, and lingering moisture under nw flow it isn't surprising to see an expansion of snow showers. The longer fetch over the snowbelt will support some additional accumulations of an few inches before the best energy wanes tonight behind the trough. High pressure will build in from the upper midwest Saturday providing subsidence and sunny conditions.
809 PM EDT Sun Aug 20 2017 High pressure will build south of the area tonight and Monday.
High clouds from an upper trough have come in from the northwest this afternoon and evening, but models agree that these clouds will move out overnight leaving Monday sunny in our CWA. The high clouds may impede viewing of the partial eclipse in Washington, northern Idaho, and northwestern Montana.
731 PM EDT Sun Aug 20 2017 High pressure will maintain dry and seasonably warm weather into tonight; however, a progressive flow pattern will support rapidly changing weather into midweek. High pressure will complete a slide across the region tonight with warm, moist advection escalating as a short wave trough advances eastward through the lower Great Lakes.
1038 PM EDT Sun Aug 20 2017 A weak pressure trough will linger in the forecast area through Monday. However, upper ridging over the region will help keep moisture shallow and limit the thunderstorm chances.
/Issued 317 PM EDT Sun Aug 20 2017/ Weak upper ridging and a general lack of deeper moisture keeping convection at bay this afternoon. Moisture slowly increasing and deepening through the day tomorrow will bring some chance for isolated to scattered convection back to the forecast area, but weak upper ridging persists, limiting chances to around 15-30% at best. BDL The upper ridge will dominate our forecast area into the middle of the upcoming week with mainly diurnal showers and thunderstorms across north and central GA.
A closed low remains in place off the southern California coast this evening while in the southerly flow aloft upstream of this low, moisture began to increase across southern Utah. Showers and thunderstorms developed along the higher terrain today as well some of the southern Utah valleys where instability was higher. However, a band of mid and high clouds is trailing an upper trough currently crossing the northern Rockies.
741 PM EDT Sun Aug 20 2017 A weak pressure trough will linger in the forecast area through Monday. However, upper ridging over the region will help keep moisture shallow and limit the thunderstorm chances.
Temperatures will again be rather hot, climbing into the lower 90s by early aftn. Also weak energy rotating over a broad anticyclone in east Texas has aided in the development of showers and storms over western and central Louisiana.
624 PM CDT Sun Aug 20 2017 Updated aviation portion for 00Z TAF issuance Warm and humid with thunderstorms at times through tomorrow night, then cooler and drier for the rest of the upcoming work week. A gradual amplification of the flow is anticipated as an upper trough deepens over eastern North America. A cold front has entered northwest Wisconsin.
Looks like there will be a little more cloud cover south of the highway 200 corridor tonight. With drier column will see minimums on the lower side of the 50s.
1030 PM EDT Sun Aug 20 2017 High pressure will build south of the area overnight and Monday.
908 PM EDT Sun Aug 20 2017 Departing high pressure will continue to hold sway across the region through morning with mostly dry conditions prevailing. High pressure has moved east of the area this evening, and warm advection has commenced in its wake. A short wave trough is beginning to advance eastward into this environment from its current position around the southern shores of Lake Michigan.
720 PM EDT Sun Aug 20 2017 High pressure building into the region through Monday morning will settle to the south and east Monday afternoon, allowing a weak warm front to approach Monday night.
1136 PM EDT Sun Aug 20 2017 High pressure will bring clear skies and seasonal temperatures to the region tonight.
745 PM EDT Sun Aug 20 2017 Above normal temperatures will persist across the Ohio Valley through Monday ahead of a cold front.
High pressure will build into the region tonight giving dry conditions.
The high clouds currently over the center of the state should continue to dissipate leaving clear skies after midnight.
Chattanooga Airport, TN 72 92 74 91 / 0 10 0 20 Knoxville McGhee Tyson Airport, TN 69 89 72 90 / 0 10 0 10 Oak Ridge, TN 70 91 72 90 / 0 10 0 20 Tri Cities Airport, TN 65 89 68 88 / 10 10 0 10.
/issued 330 PM CDT Sun Aug 20 2017/ (Tonight and Monday) Looks like quiet weather during the next 24 hours as an upper level ridge builds over Texas. (Monday Night through Sunday) An upper level ridge will build from the southeast U.
1219 AM EDT Mon Aug 21 2017 A weak upper level trough will return slight rain chances to the forecast today.
Southeast winds ahead of approaching upper trof have been gusting 20 to 30 mph over the past few hours. Showers and thunderstorms become possible across SE MT this evening as energy from an approaching disturbance/cold front moves into the region and southeasterly flow at the surface advects moisture and instability into the area. Winds will turn northerly behind the front by Monday morning as a trof remains over the area through the first part of the day, before ridging begins to build in from the west.
931 PM EDT Sun Aug 20 2017 High pressure over the area will move offshore tonight through Monday.
934 PM EDT Sun Aug 20 2017 High pressure over the eastern U.
731 PM EDT Sun Aug 20 2017 High pressure over the eastern U.
949 PM EDT Sun Aug 20 2017 High pressure will bring clear skies and seasonal temperatures to the region tonight.
Temps have fallen off nicely this evening into the mid/upper 70s from their earlier highs in the lower/mid 90s under predom partly cloudy skies. With dew pt trends mainly in the lower 70s as well, temps will prob only fall a few more degrees, or more into the lower 70s/near 70F mark, provided dew pts mix out a degree or two more. The good news for folks in the Tennessee Valley is that the upper-level ridge should help to promote fairly decent viewing conditions. The other interesting trend to watch will be temperatures will would normally peak in the low to mid 90s, but may drop 3-5 degrees during this event due to the interruption of normalized heating.
1140 PM CDT Sun Aug 20 2017 Updated aviation portion for 06Z TAF issuance Warm and humid with thunderstorms at times through tomorrow night, then cooler and drier for the rest of the upcoming work week. A gradual amplification of the flow is anticipated as an upper trough deepens over eastern North America. A cold front has entered northwest Wisconsin.
756 PM EDT Sun Aug 20 2017 High pressure will bring clear skies and seasonal temperatures to the region tonight.
802 PM EDT Sun Aug 20 2017 High pressure will bring dry and seasonably hot weather to the region for the start of the work week.
Otherwise, lows tonight will be in the 50s with highs on Monday in the upper 70s to the lower 80s with light winds. Energy will dig toward the Great Lakes, with ridging expanding across the Rockies. However, southerly breezes will return to the forecast area by late in the week as the ridge out west breaks down due to advancing energy from the eastern Pacific.
/issued 325 PM CDT Sun Aug 20 2017/ Upper level ridge over the Four Corners region is in the process of collapsing as it absorbs the upper level low that was to our south yesterday.
Satellite imagery shows a broad trough to our north that is driving cloud cover over our area from the west. Templer Previous discussion - Synoptic Setup: Short term begins with hot high pressure over the Lower Intermountain West and cool pacific air over the western half of Canada. This afternoon through Tonight: As high pressure scurries off to the east today a lee side trough will set up in its wake and move across the CWA just as fast overnight.
Behind this trough, drier air will filter back into the area from the southeast with decreasing precipitation chances.
Cold front stretches across Nebraska from northeast to southwest. Moisture will continue to stream northeast into the high Plains tonight as the southern stream impulse continues to lift northeast. This will allow strong cold front to push south across the central Plains. Much cooler and drier air is still expected to spill-in behind the front with highs in the 80s expected for Tue and Wed. The greatest storm chances will be near I-70 across central Kansas by late Monday afternoon as a cold front approaches from the northwest.
1019 PM EDT Sun Aug 20 2017 Currently - A subtle trough continues to move westwards into the Gulf of Mexico, along with a TUTT cell. The local pressure gradient has tightened today, due to the remnants of Harvy moving into the western Caribbean and the Atlantic ridge expanding westward into the southeastern United States. Will maintain the low chance pops tonight, transitioning to slight tomorrow.
Cooling will continue early this week as an upper trough of low pressure becomes nearly stationary over the eastern Pacific. Outside of the eclipse, not much to talk about as we are going to continue to see overnight clouds, clearing during the day, and temperatures remaining cool the first part of the week followed by a modest warming trend going into the weekend as a ridge of high pressure rebuilds into our region. This low is producing a solid southerly wind component through the stratus field while an onshore pressure gradient from SFO-SAC is present at 2. Wildfire smoke entrained into this low pressure circulation continues to be present aloft. SFO Bridge Approach. Typical breezy conditions are possible from the Golden Gate Bridge to Angel Island through the evening hours.
925 PM EDT Sun Aug 20 2017 High pressure will bring dry and seasonably hot weather to the region for the start of the work week.
A ridge from the Atlantic. to the Deep South expands west across the lower Mississippi Valley and builds into the eastern Gulf of Mexico. Another low or inverted trough. Surface - The axis of a fairly broad subtropical ridge extends along and just north of Latitude 30 North from the Atlantic to TX. Two tropical waves are embedded on the south side of this ridge. High pressure ridges north of the waters through about midweek as a couple of tropical waves traverse westward on the ridge/s south side. The ridge settles southward toward the end of the week as a cold front sags toward the Gulf coast.
An upper level ridge of high pressure off the coast will push inland on Monday helping to boost temperatures by 5 to 10 degrees Monday.
938 PM EDT Sun Aug 20 2017 High pressure building into the region through Monday morning will settle to the south and east Monday afternoon, allowing a weak warm front to approach Monday night.
912 PM CDT Sun Aug 20 2017 Temps have fallen off nicely this evening into the mid/upper 70s from their earlier highs in the lower/mid 90s under predom partly cloudy skies. With dew pt trends mainly in the lower 70s as well, temps will prob only fall a few more degrees, or more into the lower 70s/near 70F mark, provided dew pts mix out a degree or two more. The good news for folks in the Tennessee Valley is that the upper-level ridge should help to promote fairly decent viewing conditions. The other interesting trend to watch will be temperatures will would normally peak in the low to mid 90s, but may drop 3-5 degrees during this event due to the interruption of normalized heating.
The greatest coverage of thunderstorms should occur east to south of Tucson, but the lower deserts will not be completely left out. Otherwise, most of the activity today was confined to the higher terrain across the northern half of the state, from the Mogollon Rim northward. Synoptically, we have a nice low near the southern California coast with high pressure to our east. By tomorrow, the low near southern California will nudge a little further east, wrapping in a little bit of drying from the southwest.
Expecting to see some streamer showers develop on the nose of the higher PWAT airmass and the best coastal convergence closer to sunrise. The upper ridge over the area will move to the northwest through the period as the TUTT low over the eastern Gulf of Mexico moves to the west.
1152 PM EDT Sun Aug 20 2017 High pressure will build south of the area overnight and Monday.
A cold front stretching from extreme northern Ontario through western Lake Superior and into northern Wisconsin, as of the middle of this afternoon, will continue shifting east through this evening. High pressure will build into the Northland tonight, leading to mostly clear skies and very light wind flow.
1011 PM EDT Sun Aug 20 2017 Above normal temperatures will persist across the Ohio Valley through Monday ahead of a cold front.
310 AM CDT Mon Jul 24 2017 A relatively cooler and noticeably drier air mass is moving into the region currently, setting the stage for a relatively pleasant start to the work week. By Tuesday, the upper ridge expands back east and low level flow will turn back to a southerly direction. So as highs climb back into the low to mid 90s and dewpoints climb into the lower 70s, heat indices will climb back to around 100.
239 AM CDT Mon Jul 24 2017 Some quiet and drier weather is on tap, as high pressure drifts east across the Great Lakes region.
458 AM MDT Mon Jul 24 2017 08z surface analysis had low pressure over southern SK with meandering frontal boundary south into eastern WY and then southeast into central NE. However, drier air moving in from the southwest will keep MLCIN on the high side, so coverage will be limited and focused on aforementioned boundaries. Tuesday, upper ridge flattens as surface boundaries consolidate across southern portions of the CWA.
A surface cold front was oriented southwest to northeast across central Indiana early this morning. Aloft, we'll stay in northwest flow with mid-level height rises as an upper trough propagates over the Eastern Great Lakes. Cooler northerly flow will allow lows to range from the lower 60s to around 70 degrees Tuesday morning. During the midweek period, the upper ridge will continue to build east over the region.
127 AM EDT Mon Jul 24 2017 Drier and cooler air will continue to filter into the region behind a cold front overnight.
252 AM EDT Mon Jul 24 2017 The region will see a few days of drier and less humid conditions as high pressure dominates.
310 AM EDT Mon Jul 24 2017 A Piedmont trough will extend from Virginia into South Carolina through Tuesday.
Mid and high clouds persisting through the day to the southeast of I-44 will keep temperatures down (in the low to mid 90s), with areas along and north of the interstate seeing above normal temperatures despite the front in the area.
However abundant cloud cover also remains from yesterday keeping temps much cooler than forecast, partially countering the effects of the MCV and preventing a more widespread outbreak of rainfall this afternoon. There should be fewer clouds tomorrow allowing for greater heating, and combined with a weak upper low slowly migrating north from the Big Bend will again provide rain chances for one more day. Upper level high pressure then builds south into West Texas and eastern New Mexico starting on Tuesday causing high temperatures to edge back up to near the century mark. The upper high hangs around for only a couple of days before retreating back to the west to the Four Corners Region leaving northerly upper flow pushing a cold front into the South Plains.
A persistent sub tropical ridge continues to extend from the Atlantic through the southern and central Florida Peninsula, with weak southwesterly low level flow across much of the forecast area.
338 AM CDT Mon Jul 24 2017 (Today and Tonight) Isolated to scattered showers and thunderstorms are once again expected across much of West Central Texas this afternoon and evening, as a weakness in the upper level ridge remains across the region. Overnight lows will mainly be in the low to mid 70s.
342 AM CDT Mon Jul 24 2017 Upper level ridge will begin to shift east over the Panhandles, but another round of afternoon convection is expected before the break in storm activity on Tuesday. As the ridge moves overhead on Tuesday the chances of storms will be limited to just the northwest corner of the Panhandles, and even there the chances look fairly low.
605 AM EDT Mon Jul 24 2017 An upper trough, located over the Great Lakes early this morning, will push slowly across Pennsylvania early this week. In its wake, high pressure will build southeast across the region by midweek.
1110 PM MDT Sun Jul 23 2017 Latest upper analysis shows a ridge over much of the western CONUS with and upper trough digging southward into the Pacific Northwest. On Monday, the upper ridge will build eastward over the high plains with the thermal ridge peaking over the forecast area ahead of an upper low and associated trough crossing the Canadian prairie provinces.
102 AM EDT Mon Jul 24 2017 A ridge of high pressure will gradually shift offshore into the maritimes tonight into Monday. Low pressure will approach from the southwest later tonight and Monday and will deliver cooler temperatures and the likelihood of rain in an onshore flow.
A pattern change is expected through mid week as a mid to upper level ridge will build in from the west. High pressure will remain over the northern gulf with low seas and light onshore winds expected.
Upper level high pressure centered over Colorado into the Great Basin will build east into the central and southern Plains through tonight.
The air mass behind the front will not be all that cooler as highs in the lower to middle 90s occur. Lows tonight will drop into the upper 60s to the lower 70s. An upper level ridge will slowly nudge east across the Plains on Tuesday. Highs will be similar to those today but maybe a degree or two warmer.
While the broad mid-level subtropical ridge is somewhat evident across the Deep South, it has broken down considerably over the last day or so and become more centered back to our west over the Desert Southwest/Four Corners region. Clouds and an early start to showers and storms today have also helped to keep temps cooler than previous days. Numerous showers and storms are ongoing from GLH to HBG in closer proximity to the upper low and deep moisture axis. Low temps will be generally be in the low to mid 70s.
345 AM EDT Mon Jul 24 2017 A slow-moving cold front will drift southward over the Mid Atlantic Monday.
High pressure will provide dry weather through midweek. A cold front will push southeast from the OH Valley across the central Appalachians tonight. Behind the front, high pressure will take its place.
A weak upper level trof axis across Tennessee will sink southward today and provide enough lift for scattered showers and thunderstorms across north central Alabama. The northern trof axis will push to near the I-20 by this evening, and better rain chances will shift south of I-20 for the overnight period. Temperatures should be a little cooler today than yesterday as the upper ridge shifts westward in response to upper height falls east of the Mississippi River. The main trough axis and frontal boundary push southward through Central AL on Tuesday.
though area of cloudiness in the San Luis Valley and Southwest mountains appear to be related to an upper level shear axis around southern side of the upper high. Monday looks similar to today, though a few degrees warmer. -KT No big changes to ongoing forecast with weak west to southwest flow aloft remaining across the area Monday night and Tuesday, as the upper high across the region continues to build south and east into the Southern High Plains.
323 AM CDT Mon Jul 24 2017 All indications of the high over the gulf edging northward and settling into the extreme coastal areas this morning. All sh/ts will continue to move from west to east in the relatively deep flow between this high and the trough that is developing very close to the northeast corner of the area.
Still forecasting highs in the low 100s over the southwest CWA, thus prompting a Heat Advisory as heat indices are also in that range.
Models still keeping higher pops in for the day, pretty far North too, with the upper ridge powering back in over the mid South. So we will see what pans out, but not much will be the case soon as the upper ridge dries us out for mid to late week.
1120 PM MDT Sun Jul 23 2017 Latest upper air data shows the ridge over the Central Rockies. At the surface a high pressure was moving east out of the Tri-State Area. Monday will continue to be dry as the ridge builds over the Central Plains and an upper level short wave trough tracks over the Northern Plains. Highs will be warmer than today by a few degrees.
Upper level low off the northern California Coast is bringing southerly flow over the region today with a significant increase in moisture.
Active weather expected over the next few days as monsoonal moisture will combine with a stalled trough along the California coast.
1032 PM PDT Sun Jul 23 2017 A dry cold front will has brought windy conditions to the Cascades and into the Columbia Basin.
300 AM CDT Mon Jul 24 2017 Today-tonight: Relatively quiet weather with high pressure slowly drifting east. Upper support is limited virtually non-existent with area near 300MB ridge axis so left forecast dry, but would not be shocked by a rogue elevated storm.
/06Z TAFS/ Another vfr set of TAFs under the high pressure bubble. Otherwise, sub-tropical upper level ridge over the dessert southwest is expected to move to the east through Monday. This convection is being aided by some weak upper level support due to a mid to upper level low in southeast Texas. Isolated shower activity could linger into the night time hours due to the aforementioned upper low still in the area. High pressure will continue to dominate the region and keep high temperatures in the triple digits for many locations across South Central Texas.
252 AM PDT Mon Jul 24 2017 A dry cold front will keep windy conditions across the Cascades and into the Columbia Basin.
654 AM EDT Mon Jul 24 2017 A cold front will move through the region today.
We'll see a drier pattern build in across much of our forecast area beginning Tuesday as the upper level ridge slowly migrates westward. Seasonable temperatures on the Caprock for the most part with warmer than normal temps to the east off the Caprock through the week.
258 AM MDT Mon Jul 24 2017 Large scale ridge remains in place across the southwest US, with mean flow shifted further north and northeast from our CWA. Today-Tonight: Lee trough begins to deepen today and southerly flow will bring both breezy conditions and WAA. Temperatures should be similar to Sun if not a little warmer and I made a slight upward adjustment to account for increase in WAA.
148 AM EDT Mon Jul 24 2017 A Piedmont trough will extend from Virginia into South Carolina through Tuesday.
High pressure will provide dry weather through midweek. A cold front will push southeast from the OH Valley across the central Appalachians tonight. The hires guidance develops isolated to scattered diurnally driven convection along/ahead of the advancing cold front mainly between 18-23z.
419 AM EDT Mon Jul 24 2017 A stagnant mid-level trough will keep very humid conditions over the region today with a continued threat for showers and thunderstorms.