Aikyam-Lab/Synoptic-Bench huggingface dataset:
712 PM CDT SUN MAY 22 2016 For the ArkLaTex, high pressure over AR is drying the air from NE to SW. S/SE winds will lift in as the high slowly exits stage right. An active weather pattern expected late this week and through The forecast area remains under the influence of weak ridging aloft between long wave troughs over both wrn and ern North America.
1136 PM CDT SUN MAY 22 2016 Latest water vapor imagery indicates a closed low over southern Alberta with an amplified ridge to our east extending along the Mississippi River Valley. In the lower levels. the 850mb moist axis stretched north from western Texas into the western Dakotas and continues to slowly shift east ahead of the main upper low. 18Z subjective surface analysis showed low pressure centered over Colorado with large ridge of high pressure over the Mississippi River valley. In the meantime, a dryline was noted across the High Plains with an additional weak surface boundary extending across western Nebraska into south central South Dakota along which some convection has initiated in north central Nebraska. primarily after 06Z as vort max associated with trailing upper trough sparks a convective complex over the Black Hills region.
1049 PM EDT SUN MAY 22 2016 Weak low pressure off the Carolina coast will continue moving northeast.
810 PM EDT SUN MAY 22 2016 Decreasing shower chances are expected through Monday as upper level low pressure exits. Warmer temperatures are expected through the week. An upper level low across was across northeast WV based on the latest water vapor and meso analysis. The showers are expected to gradually diminish later tonight as the upper low begins to move SE.
1151 PM CDT SUN MAY 22 2016 High pressure and the associated dry airmass will remain in control of the local weather. A high pressure ridge over the Mississippi River Valley this afternoon will continue to move across the region tonight. The ridge will keep the skies mostly clear with very light and variable winds. By morning, the ridge axis should be much further to the east, resulting in more south/southeasterly turn to the winds. Two upper lows, over the east and west coast remain in place today. with pleasant weather in the middle and warm temperatures continuing to build a thermal ridge in the mid levels over the Plains.
In addition have reduced overnight lows across northwest Tennessee where temperatures have already fallen into the low and mid 60s. Low level dry air in the region will allow lows to fall into the low and mid 50s after midnight. /issued 258 PM CDT SUN MAY 22 2016/ A steep upper level ridge continues to build over Mississippi River Valley as a broad area of high pressure builds at the surface. The dry air associated with this high pressure has left the Mid-South cloud free and kept dewpoints below 50 degrees. The upper level ridge will be stronger and stick around longer than previously forecasted, staying in place through Monday. Return flow from the high will result in increased low level moisture and slightly above average temperatures for work week.
703 PM EDT SUN MAY 22 2016 Decreasing shower chances are expected through Monday as upper level low pressure exits. Warmer temperatures are expected through the week. An upper level low across was across northeast WV based on the latest water vapor and meso analysis. The showers are expected to gradually diminish later tonight as the upper low begins to move SE.
as drier air and cooler temperatures have moved into those areas. /issued 712 PM CDT SUN MAY 22 2016/ For the ArkLaTex, high pressure over AR is drying the air from NE to SW. S/SE winds will lift in as the high slowly exits stage right. An active weather pattern expected late this week and through The forecast area remains under the influence of weak ridging aloft between long wave troughs over both wrn and ern North America.
Lows should be warmer with readings in the lower to mid 60s near the beaches.
825 PM EDT SUN MAY 22 2016 Upper level low lingers around the mid Atlantic states into Monday.
711 PM EDT SUN MAY 22 2016 Low pressure will remain the primary feature through tonight.
The chance of showers will continue to decrease this evening but the airmass will, in general remain moist and a bit unsettled under the influence of low pressure aloft. A low pressure center will continue to move northeast of the region tonight although a broad area of low pressure and strong southwest flow will continue through Monday. /ISSUED / A strong upper level low is spinning just north of our forecast area, and slowly drifting northeast into Saskatchewan. Deep moisture wrapping around the west side of the upper low is producing record rainfall, per NWS MSO, at some locations west of the Continental Divide.
1149 PM CDT SUN MAY 22 2016 An upper-level ridge over the region will continue to provide for ideal conditions the remainder of the day before a persistent unsettled pattern arrives tomorrow. Temperatures will climb to the low 80s this afternoon as surface flow transitions out of the south. This southerly surface flow will advect moisture into the region throughout the week as dewpoints currently in the upper 50s rise into the lower 70s by the mid week. The low-level jet over central Kansas will slowly push eastward early Monday morning and the area within this flow will be the focus for the first of many rounds of thunderstorms beginning Monday. This activity will be maintained coincident with the low- level jet, along a SW to NE axis mostly west of I-35 before expanding eastward into the afternoon and evening hours.
The low pressure area on the east coast still pushing moisture into NE TN.
957 PM EDT SUN MAY 22 2016 Weak low pressure off the Carolina coast will continue moving northeast.
skies were clear and temperatures were a little cooler than expected. Drier and slightly cooler air was draining in from the northeast.
High pressure sliding east across the region will give us dry conditions and winds shifting to the south.
Drier air through the lower levels and the last shreds of mid level ridging have provided an unfriendly environment for shower development, and very little activity developed over South Florida this evening, and non in the Florida Keys area. Temperatures should find a bottom in the upper 70s with dew points holding in the low to mid 70s. Mid level ridging will give way broad cyclonic flow and increasing deep layered moisture. The weak flow and continued dry air through the lower levels should limit nocturnal shower coverage.
Model soundings suggest the low levels will be a bit too dry for fog since dewpoints did drop into the 40s earlier today. VFR flight rules and light, mainly northerly winds over the next 24 hours as high pressure takes over.
900 PM MST temperatures are several degrees cooler than last night at this time.
949 PM EDT SUN MAY 22 2016 Scattered showers are possible especially east of Interstate 79 through Monday before drier and warmer weather returns through mid week.
(Issued 221 PM CDT SUN MAY 22 2016) At 19z, a large area of high pressure was centered across northern Missouri and extended southeast through the lower Ohio and Tennessee valley region.
1033 PM EDT SUN MAY 22 2016 Low pressure will remain the primary feature through tonight.
858 PM CDT SUN MAY 22 2016 High pressure and the associated dry airmass will remain in control of the local weather. A high pressure ridge over the Mississippi River Valley this afternoon will continue to move across the region tonight. The ridge will keep the skies mostly clear with very light and variable winds. By morning, the ridge axis should be much further to the east, resulting in more south/southeasterly turn to the winds. Two upper lows, over the east and west coast remain in place today. with pleasant weather in the middle and warm temperatures continuing to build a thermal ridge in the mid levels over the Plains.
1148 PM CDT SUN MAY 22 2016 At 3 PM, a 1019 MB high pressure system kept skies mainly sunny across Wisconsin. On Monday afternoon, a weakening short wave trough will approach the area from western and northern Minnesota. Besides weakening, this trough will be entering a drier air mass.
723 PM EDT SUN MAY 22 2016 Forecast area is on the back side of an upper low currently drifting over the mid and upper Atlantic coastal areas. This is resulting in a dry/subsiding air mass advecting down from the north and northwest which will result in clear skies and cooler temperatures overnight. Current forecast looks on track with lows generally in the lower to mid 50s for most areas. /39 500mb trough crossing the forecast area this afternoon. Closed low circulating vicinity of the mid Atlantic coast through the period. Overnight lows a bit cooler than normal most areas tonight but a gradual moderation through the rest of the forecast period. Relative humidity values Monday will drop into the low 30s and upper 20s across much of the area.
1145 PM EDT SUN MAY 22 2016 Clear skies and light winds will persist as high pressure drifts southeast across the area tonight into Monday. Winds will become SSW on the backside of this high by midday Monday, but wind speeds will remain under 10 knots. *None Omega-block pattern covering the CONUS will slowly slide east over the next few days, shifting the amplified upper ridge over the Upper Midwest and Western Great Lakes into Michigan on Monday. Good insolation and slightly warmer temperatures profiles should bring max temps back up into the mid 70s tomorrow, with locations near the lakeshores remaining cooler as winds turn off the lake.
950 PM EDT SUN MAY 22 2016 Evening surface analysis depicts low pressure (1006 millibars) deepening east of the Virginia Capes, with a trailing cold front entering south Florida. Weak high pressure (1015 millibars) was slowly building into our region from the northwest. Aloft, an intense cutoff low was slowly pushing southward over Virginia, with a deep trough digging along the U. Weak high pressure will continue to filter into our region from the northwest.
736 PM EDT SUN MAY 22 2016 Aviation A ridge of high pressure will continue to dominate the weather pattern through Monday and result in mostly clear skies.
1200 AM CDT MON MAY 23 2016 For the ArkLaTex, high pressure over AR is drying the air from NE to SW. S/SE winds will lift in as the high slowly exits stage right. as drier air and cooler temperatures have moved into those areas. /issued 216 PM CDT SUN MAY 22 2016/ An active weather pattern expected late this week and through The forecast area remains under the influence of weak ridging aloft between long wave troughs over both wrn and ern North America.
645 PM CDT SUN MAY 22 2016 At 3 PM, a 1019 MB high pressure system kept skies mainly sunny across Wisconsin. On Monday afternoon, a weakening short wave trough will approach the area from western and northern Minnesota. Besides weakening, this trough will be entering a drier air mass.
(Issued 601 PM CDT SUN MAY 22 2016) For 00Z TAFs: High pressure and a dry atmosphere across the area will provide for vfr conditions thru the fcst period. (Issued 601 PM CDT SUN MAY 22 2016) (Issued 221 PM CDT SUN MAY 22 2016) At 19z, a large area of high pressure was centered across northern Missouri and extended southeast through the lower Ohio and Tennessee valley region.
/issued 258 PM CDT SUN MAY 22 2016/ A steep upper level ridge continues to build over Mississippi River Valley as a broad area of high pressure builds at the surface. The dry air associated with this high pressure has left the Mid-South cloud free and kept dewpoints below 50 degrees. The upper level ridge will be stronger and stick around longer than previously forecasted, staying in place through Monday. Return flow from the high will result in increased low level moisture and slightly above average temperatures for work week.
200 PM PDT WED MAY 25 2016 Showers and isolated thunderstorms again today, mainly over the higher elevations. Dry and warmer by the weekend. The large upper trough that has kept the cool and unsettled weather pattern going across the region over the past several days remains overhead NorCal, but most of the energy has consolidated into a closed low that is now just off the SoCal coast near Vandenberg. This low will move east into the lower Colorado River Valley today before lifting out into the central Plains by the end of the week, gradually replaced over NorCal by ridging from the eastern Pacific.
High pressure returns for Thursday with mainly dry and seasonably warm temperatures expected. Model-averaged 925 mb temperatures run about a degree or two cooler than today, so little airmass change expected with afternoon highs continuing in the upper 70s to lower 80s for most spots. Some model differences on how robust this process is, it being dependent on the future evolution of the ridge axis transitioning to our east over time. Will have showers move into the area thursday night with a warm front lifting across our forecast area.
A deep upper trough over S CA will approach the southern Rockies on Thursday.
One more day where Southeast Idaho is between the low pressure trough over Montana and the low pressure circulation moving into the southwestern states.
Strong ridging looks to remain across the east coast.
This trend will continue through this afternoon and into this evening as a weakening upper level low over northern Montana slowly drifts east over the next 24 hrs.
Unseasonably deep upper low embedded in western trough was located over southern California this afternoon with west to southwest flow ahead of it sustaining inflow of seasonably warm dry air mass. The upper low will move eastward into Arizona tonight and lift to the northeast into northern New Mexico/southern Colorado on Thursday. Associated dynamics and downslope flow in advance of system will induce lee cyclogenesis over southeast Colorado with trailing trough extending southward through eastern New Mexico.
Ridge of high pressure will hold through the end of the week.
613 PM EDT WED MAY 25 2016 High pressure over the area will continue to weaken as a weak cold front approaches from the north. The front will move back to the north of the area on Thursday as high pressure tries to build back into the area from the east into the weekend. Low temps will be a lot warmer than this morning as dewpoints continue to rise.
1046 AM PDT WED MAY 25 2016 Expect warmer weather with isolated mountain showers and thunderstorms during the afternoon and evening hours today and Thursday.
125 PM EDT WED MAY 25 2016 A weak trough moving through an unstable airmass over our area tonight is expected to cause scattered showers and thunderstorms. An upper level ridge will move into the area Thursday providing fair weather. Lows tonight will be in the mid 60s with highs Thursday in the lower and middle 80s. Models and official forecast have shown a rather high moisture bias in the low levels.
Consolidated thunderstorm outflow expanding southeast from this activity is helping to kick up isolated to scattered storms in the juicy and unstable air mass across the Arklamiss Delta, further into the teeth of the generally suppressive upper level ridge extending north from the Gulf of Mexico. Late tonight, trough energy in the atmospheric upper levels will start reorganizing out to our west and focused Gulf moisture transport and subtle lift aloft could spawn a few showers or a stray storm before dawn along the western and northern periphery of the region.
258 PM EDT WED MAY 25 2016 Upper air pattern consists of a trough in the wrn U. trough. 75 inch of rain with the highest amounts in the western cwa through Thu afternoon. Southwest mid/upper level flow from the plains into the western Great Lakes will prevail through this weekend between a mid/upper level trough over the western CONUS and a ridge over the east. mid level ridging and weak qvector div during the rest of the day will be less favorable for additional tsra during the afternoon even though temps in the lower 80s will push MLCAPE values into the 1k-2k J/Kg range.
Upper level low positioned over southern CA and the Baja Peninsula will slowly track further east over the desert southwest/Four Corners region. Several impulses ejecting from this low will cross the region overnight through Thursday night.
445 PM EDT WED MAY 25 2016 Upper air pattern consists of a trough in the wrn U. trough. 75 inch of rain with the highest amounts in the western cwa through Thu afternoon. Broad troughing across the western U. will send several waves of energy NE across the Plains around broad ridging across the eastern U.
Warm and humid conditions will persist but at least afternoon highs may be a tad cooler but still looking at mid to upper 80s. The ridge currently over the region will erode some tomorrow (push east) as a weak disturbance works northeast out of Old Mexico/southern TX and into the Lower MS Valley.
Otherwise, it will be dry with lows in the lower to mid 60s.
327 PM EDT WED MAY 25 2016 A cold front will cross the region this evening. High pressure builds tonight into Thursday.
However, as the low center over southern California shifts to central Arizona moisture will increase over the south while divergence/diffluence aloft provides lift and the potential for nocturnal showers toward sunrise. Showers and thunderstorms will increase in coverage Thursday as the low pressure system shifts to near the Pikes Peak region late in the day. Do not anticipate more than wet roads in the high passes so will not issue advisory for snow. Showers are expected to diminish Thursday evening except along the Continental Divide due to their proximity to the low exiting over Colorado's east-central plains.
the remnants of the low cloud deck which lingered over central portions of the area. Weak ridging over the area giving the region mainly variable conditions of 5 mph or less. This quick moving system will give way to an approaching warm front going into Thursday morning. First, a warm front will provide a focus for thunderstorm development Thursday afternoon.
259 PM EDT WED MAY 25 2016 Weak disturbances within ridge aloft today through Thursday.
245 PM EDT WED MAY 25 2016 An upper level ridge of warm air will remain in place as weaker low level systems pass by the area.
Ridge of high pressure from the Carolina Coast across SE GA/NE FL will hold in place for the short term with warm and dry conditions across the region. Max temps will continue near climo values in the lower/middle 80s along the coast and into the upper 80s/near 90 inland, and min temps will remain in the lower/middle 60s inland and upper 60s/near 70 along the coast.
1238 PM CDT WED MAY 25 2016 South to southwest winds should increase into the 10 to 15 knot range this afternoon as a new surface lee-side trough develops to our west.
10 AM temperatures are running about 2 degrees warmer than same time yesterday.
A closed upper low continues to be centered over southwest Saskatchewan. Instability associated with this low is currently driving scattered showers with embedded thunderstorms across much of northeast Montana. Tonight the closed low to the north will slowly make its way into the treasure state. Thursday the low will continue overhead, and will pick up a good moisture fetch from the circulation over North Dakota. Thursday evening shower activity will taper off with the setting of the sun, and Thursday night will be mainly dry as weak ridging builds in behind the now exiting upper low.
248 PM CDT WED MAY 25 2016 An upper level low will move to the east from southern California this afternoon to the 4-corners noon Thursday then toward the Sangre de Cristos by the end of the day. Some pressure falls this evening will allow for the backing of the low level flow toward the south, in turn drawing low level moisture back into much of the eastern two- thirds of the forecast area by sunrise Thursday. Some stratus should accompany this low level moisture. Will also see an increase in mid level moisture overnight as jet energy rounds the base of the upper low and ejects toward West Texas. As the low ejects across the 4-corners Thursday will see the dryline mix eastward to the Rolling Plains during the afternoon, possibly east of the forecast area by the end of the day.
The elongated upper level trough over the Great Basin will shift slowly across the state through Thursday. Unsettled conditions associated with this trough will persist through the upcoming weekend.
616 PM EDT WED MAY 25 2016 An upper level ridge of warm air will remain in place as weaker low level systems pass by the area.
This will combine with slightly cooler temperatures aloft to crate a more favorably unstable profile.
126 PM EDT WED MAY 25 2016 High pressure over the area will weaken toward evening as a weak cold front approaches from the north.
233 PM EDT WED MAY 25 2016 Weak disturbances within ridge aloft today into Thursday.
But the Straits of Florida should feel the highest sustained winds with accompanying gusts before beginning to wane during the day Thursday. A trough through the middle and upper levels will continue to reside just to the east of the Florida peninsula over the next couple of days. Closer to the surface, lower pressure is expected to form along a decaying trough stretching far east from the Bahamas. And it does keep a more elongated trough along the southeast coast, which should lead to a higher probability of unsettled weather there. As stated above, the Straits of Florida should feel the highest sustained winds overnight with some gustiness.
Some of the high resolution models show some weak development around and south of KBIS, which tries to move east early this evening. Water vapor loop indicated a trough from eastern WY into eastern CO and was moving to the northeast about 40 knots. Short wave ridging east of trough was returning moisture northward. Precip basically falls under the 700 hpa theta-e ridge. Precipitable water increases again for Fri/Fri night as upper low off the southern CA coast moves out into the plains of NE. Concurrently an upper trough over western MT will move into northern ND/southern MAN Fri/Fri night.
A gradual warming trend for the end of this week until another weak system moves in this weekend keeping temperatures cooler than normal and increasing chances for precipitation. especially over the higher elevations of the Sierra.
the remnants of the low cloud deck which lingered over central portions of the area. Weak ridging over the area giving the region mainly variable conditions of 5 mph or less. This quick moving system will give way to an approaching warm front going into Thursday morning.
252 PM EDT WED MAY 25 2016 Sunshine and warmer weather will continue this evening ahead of a cold front. A ridge of high pressure will build over the area tonight. then hold over the region on Thursday as a warm front approaches from the west.
314 PM EDT WED MAY 25 2016 A ridge of high pressure over Pennsylvania this afternoon will slide east and set up shop across the western Atlantic over the next several days. A southerly flow on the west side of this high will transport increasing moisture north from the gulf coast region.
229 PM EDT WED MAY 25 2016 A summer like weather pattern will bring warmer air, and gradually increasing humidity, over the next several days.
425 PM EDT WED MAY 25 2016 Sunshine and warmer weather will continue this evening ahead of a cold front. A ridge of high pressure will build over the area tonight. then hold over the region on Thursday as a warm front approaches from the west.
202 PM MDT WED MAY 25 2016 WATER VAPOR SHOWS PERSITENT UPPER LOW OVER FAR NRN MT WITH DISTINCT SHORT WAVE MOVING THROUGH WRN SD. MAIN UPPER LOW WILL DRIFT SLOWLY EWD THROUGH ERN MT. Persistent upper level trough over the northwest CONUS will keep active southwest flow across the Northern Plains through the Memorial Day weekend.
243 PM CDT WED MAY 25 2016 The forecast area was continuing to be on the western fringe of the upper ridge axis, which was across much of the Southeast U. A weakening area of low pressure across northeast Texas on Thursday will shift northeast into Arkansas as a short wave at 500 millibars follows a similar northeast movement through Thursday night.
140 PM EDT WED MAY 25 2016 High pressure will remain centered off the southeast coast today through Thursday.