Aikyam-Lab/Synoptic-Bench huggingface dataset:
216 PM MDT Tue May 11 2021 The low pressure system responsible for the wintry weather across southeast WY was centered south of Rawlins, moving slowly to the east. The precipitation will persist through the late afternoon and early evening with the passage of the low, then taper off from west to east later. Northwest flow aloft in the wake of the departing upper level low and trough will remain active Wednesday with the passage of a short wave disturbance during the afternoon.
246 PM CDT Tue May 11 2021 High pressure centered over the Great Lakes will keep the weather cooler than normal and relatively quiet through the short term forecast period. Elsewhere, morning lows will drop into the lower to middle 40s.
/issued 416 AM CDT Tue May 11 2021/ Upper low over UT/CO this morning has a trough that extends southward to Mexico. As the low weakens this trough will cross the Rockies today and lose most of its definition as it moves onto the plains tonight. On Wednesday an upper ridge will build across the Western US with a weak remnant of the trough on its east side.
(This evening through Wednesday) Only some light rain remains over portions of western north Texas and southeast OK this afternoon behind the cold front.
Cooler temperatures will prevail through the end of the week, with highs in the 60s and lows generally in the 40s.
There is still a weak cold front laying west to east across central GA and it is slowly moving southward.
As always cooler by the lake. Relative humidities will be in the upper teens to the lower 20s Wednesday leading to near critical fire weather conditions for Minnesota where slightly higher winds at 5-10 mph are expected. The Northland will continue to be dry with a slight increase in relative humidity due to the return flow on the back side of the high pressure.
Isolated showers have started developing over the higher terrain of western and southwest MT, and are expected to move off to the east later this afternoon and evening.
259 PM CDT Tue May 11 2021 High pressure has brought mainly clear skies across the CWA today and dry conditions. Tonight looks to be slightly warmer than last night, with lows above freezing for most areas. A developing trough could increase cloud cover in the west tonight, and may bring an isolated shower across the southwest. A broad trough then sets up across the state on Wednesday. The result will be a slight increase in southerly winds, and slightly warmer temperatures in the mid to upper 60s. The mentioned trough will be unsettled enough to provide for isolated to scattered shower coverage throughout the day on Wednesday.
Light cool, moist northeast winds will continue to keep the lower atmosphere pretty much saturated, and temperatures will consequently struggle into the lower 50s this afternoon. Winds will trend light and variable through Wednesday morning with the surface anticyclone nearby, so if any breaks in the stratus can materialize, will need to monitor for low/mid 30s on the higher terrain of the NW zones.
1224 PM CDT Tue May 11 2021 Summary: High pressure over the region will keep things warm and dry over the next several days. Today marks the start of our warming trend thanks to an upper level low moving east away from the Northland and ridging pushing in from the west. Cooler temperatures will still permeate from Lake Superior keeping the shorelines in the 50s.
Wednesday will be a breezy day as strong high pressure from the arctic air mass to our north helps to generate a strong north-south pressure gradient across the Tennessee Valley. This cool north wind as well as cloud cover will help keep high temperatures from getting up above the low-to-mid 60s Wednesday afternoon.
A qausi-stationary frontal boundary is stalled just north of our area, with short wave troughs rolling across what is otherwise mostly zonal flow aloft.
249 PM CDT Tue May 11 2021 Sunny and rather cool conditions were found across the area this afternoon thanks to high pressure centered over MN and WI. To the north, a weaker blocky flow was in place featuring a large ridge over the northern plains into the Canadian prairies flanked by troughs to the northwest and southeast. The potential for widespread frost and possibly freezing temperatures tonight is the primary focus. On the other hand, northwest Illinois may be setting up for possible subfreezing temperatures and trends will need to be monitored for a possible Freeze Warning. Without the influence of today's cool air advection, temperatures should reach afternoon highs in the lower 60s.
Thus, have widespread highs in the low to mid 60s.
1140 AM MDT Tue May 11 2021 Low pressure continues to affect northeastern Utah and western Colorado early this Tuesday morning. The center of this low pressure system was located over far southwestern Wyoming prior to sunrise, and is expected to traverse eastward along the Wyoming/Colorado border through the day today. However, low pressure will quickly pass east of the divide by 6pm or so, with drier northwesterly flow moving in in earnest for the remainder of the evening. A few isolated afternoon showers may affect the Park and Gore ranges given cooler air aloft once convective temperatures are reached, but areal coverage is expected to be limited to only the higher peaks.
139 PM MDT Tue May 11 2021 19z surface analysis had weak high over the upper Midwest with weak trough from central MT into central WY. Water vapour had weak mean trough from central AB into CO. Wouldn't be surprised to see some small hail with the strongest cells as well as peppy SHSN over the highest elevations. Wednesday, mean upper trough shifts slowly eastward in response to upper ridge building into the western CONUS. Modestly gusty southerly winds expected ahead of the trough.
Overnight lows will range from the low to mid 40s.
324 PM EDT Tue May 11 2021 High pressure will build into the Ohio Valley tonight with decreasing clouds and cold temperatures. High pressure will be in control for Wednesday and Wednesday night providing mostly clear skies and light winds.
640 PM EDT Tue May 11 2021 Strong high pressure in place across the central United States will be the primary influence on our weather through the workweek. A weak disturbance will pass across the northern portions of the forecast area through Wednesday morning, and a couple weak systems will approach the area this weekend as the High slowly weakens and shifts offshore. Given the position of the High a dry NW flow will prevail Wed/Thu, with temperatures slowly moderating through the period but still remaining 5-10 degrees below normal (i.
959 PM EDT Tue May 11 2021 A cold front is crossing the region this evening. High pressure will build toward the region Wednesday, with the high building overhead during latter portion of the week. Cold front is almost clear of the CWA. An upper low to our north will move off toward the east Wednesday. High pressure will build toward the area from the Great Lakes. The combination of building high pressure and zonal flow aloft will lead to mostly sunny skies. As high pressure builds closer still Wednesday night, wind may go weak enough for some spots to decouple. As a result, frost/freeze headlines may potentially be needed again to the west of the Blue Ridge.
NW gradient flow will preclude frost formation, and advective cold will produce min temperatures in the lower 30s over the Laurel Highlands and parts of the NW Mountains. High pressure will provide fair and dry wx on Wednesday. There will still be a relatively cool NW breeze, but max temps will be a few to several degrees warmer than today (Tuesday).
558 PM MDT Tue May 11 2021 The low pressure system responsible for the wintry weather across southeast WY was centered south of Rawlins, moving slowly to the east. The precipitation will persist through the late afternoon and early evening with the passage of the low, then taper off from west to east later. Northwest flow aloft in the wake of the departing upper level low and trough will remain active Wednesday with the passage of a short wave disturbance during the afternoon.
/issued 245 PM CDT Tue May 11 2021/ WV imagery shows yesterday's Baja trough moving into central Texas, with a line of convection along with it. Upstream, a minor trough is digging through the Rockies, and will give West Texas and Southeast New Mexico another shot at rain overnight. For the time being, the warm sector encompasses the lower Trans Pecos, and this will be the focus for severe activity again this afternoon. As it does, models hint at convection developing in upslope flow against the higher terrain out west, then moving back east. Wednesday looks to be our coldest day, w/the lower terrain banked in stratus and remaining in the 60s most locations.
634 PM MDT Tue May 11 2021 Center of the upper level trough will continue to move east across northern Colorado through tonight. By mid evening, drier air moves in behind the trough and will bring precipitation to an end. Lows over northeast Colorado are expected to be in the lower to mid 30s with the moist airmass helping to keep temperatures from falling much. Even with the warmer temperatures, it will be below normal with highs in the upper 50s to lower 60s over northeast Colorado. Airmass will become slightly unstable over the higher terrain, so a few weak rain and snow showers will be possible. A weak trough embedded in the northwest flow aloft will pass northeast of Colorado. Over the weekend, upper level low pressure deepens over the Southwestern States with some upper level ridging remaining over Colorado.
Showers associated with moisture advection/isentropic upglide ahead of a wave of low pressure moving along the frontal boundary to the S have reached southern portions of middle TN, and these showers will begin to affect the southern Plateau and southern valley after 04Z, then gradually move N/NE late tonight.
Warm and dry conditions continue under the high pressure for the mid-week.
The center of high pressure will continue to slowly move away from the region overnight and into Wednesday. Light southerly winds overnight should be just enough to prevent lows from falling below freezing. A slight increase in the overall 850mb temps combined with the extra mixing should allow for temps to be a few degrees warmer than what we saw today. RH on Wednesday looks to fall into the 20 to 30 percent range across most of the CWA, with the lowest readings across the far eastern portion.
902 PM EDT Tue May 11 2021 High pressure will build into the Ohio Valley tonight with decreasing clouds and cold temperatures. Temperatures in the Frost Advisory will fall into the lower to mid 30s. High pressure will be in control for Wednesday and Wednesday night providing mostly clear skies and light winds.
Sunny and rather cool conditions were found across the area this afternoon thanks to high pressure centered over MN and WI. To the north, a weaker blocky flow was in place featuring a large ridge over the northern plains into the Canadian prairies flanked by troughs to the northwest and southeast. The potential for widespread frost and possibly freezing temperatures tonight is the primary focus. On the other hand, northwest Illinois may be setting up for possible subfreezing temperatures and trends will need to be monitored for a possible Freeze Warning. Without the influence of today's cool air advection, temperatures should reach afternoon highs in the lower 60s.
Active and gradually warmer for the extended, but details regarding shower/t-storm timing/coverage remain unclear. Today has once again been a battle between energy/lift/moisture ejecting E/NE from central Rockies trough and high pressure over Upper MS Valley and flow of dry air on E/NE low level flow. Low end PoPs continue into Wed due to weak mid level troughing along with continued cool H7 temps of -6C to -8C. Can't completely rule out some rumbles of thunder, or even small hail given low freezing levels, but have kept this out of the forecast attm given uncertainty on actual coverage. High pressure will slide east overnight allowing for the winds to become more southeasterly tomorrow.
708 PM EDT Tue May 11 2021 High pressure will build into the Ohio Valley tonight with decreasing clouds and cold temperatures. High pressure will be in control for Wednesday and Wednesday night providing mostly clear skies and light winds.
High temperatures however will likely remain in the lower 60s.
Looking at Bufkit soundings, the low level moisture will stay strong and quite thick the rest of this afternoon into evening. Low clouds and even fog in the higher terrain will continue into tomorrow morning. Tomorrow, winds will turn more southerly in the afternoon which will help temperatures get a little warmer, but highs will still be below normal.
Expect a ridging pattern for much of the week, which will result in fairly quiet weather for the Western Washington area.
931 PM EDT Tue May 11 2021 Strong high pressure in place across the central United States will be the primary influence on our weather through the workweek. A weak disturbance will pass across the northern portions of the forecast area through Wednesday morning, and a couple weak systems will approach the area this weekend as the High slowly weakens and shifts offshore. An outflow boundary that appears to be separate from the trough (oriented more E-W vs the more N-S trough) has become visible on KDIX lowest scans over the last half hour. In the mid levels, the base of a positively tilted mid level short wave trough remains over our region. Given the position of the High a dry NW flow will prevail Wed/Thu, with temperatures slowly moderating through the period but still remaining 5-10 degrees below normal (i.
As for temps, with clouds likely to continue across the plains throughout the night, most areas are expected to remain above freezing. The primary area which will likely see freezing temps will be over N El Paso county, where u20s to L30s are expected.
754 PM EDT Tue May 11 2021 High pressure will build from the west across the area tonight through the end of the week. High pressure will build in from the west across the area later tonight and persist through Wednesday night, resulting in pleasant weather on Wednesday, albeit still below average in the upper 50s to lower 60s.
High pressure east of this area is still trying to exude stable/dry weather influence over the region. The center of high pressure will continue to slowly move away from the region overnight and into Wednesday. Light southerly winds overnight should be just enough to prevent lows from falling below freezing. A slight increase in the overall 850mb temps combined with the extra mixing should allow for temps to be a few degrees warmer than what we saw today. RH on Wednesday looks to fall into the 20 to 30 percent range across most of the CWA, with the lowest readings across the far eastern portion.
629 PM CDT Tue May 11 2021 A trough is positioned over the Northeast with a wave over Texas/Oklahoma and a ridge over the middle of the CONUS or north of the southern wave. Highlights: 1) Cool continues Wednesday 2) Precipitation chances thru mid day Wednesday 3) Warmer at the end of week Change: Precipitation chances The cooler air sticks around for another day on Wednesday with high temperatures once more around 60 degrees. Scattered showers remain possible into mid day Wednesday with minimal if any accumulation given the low chances.
620 PM MDT Tue May 11 2021 19z surface analysis had weak high over the upper Midwest with weak trough from central MT into central WY. Water vapour had weak mean trough from central AB into CO. Wouldn't be surprised to see some small hail with the strongest cells as well as peppy SHSN over the highest elevations. Wednesday, mean upper trough shifts slowly eastward in response to upper ridge building into the western CONUS. Modestly gusty southerly winds expected ahead of the trough.
The temperature forecast appears to be on track at this time, with lows expected to reach the lower 50s for all areas.
602 PM EDT Tue May 11 2021 High pressure will build from the west across the area tonight through the end of the week. High pressure will build in from the west across the area later tonight and persist through Wednesday night, resulting in pleasant weather on Wednesday, albeit still below average in the upper 50s to lower 60s.
Cool NE low-level flow persists over the Ohio Valley with Canadian high pressure centered over NE Iowa as of 18Z. Seeing a decent amount of Cu and even a mid-level ceiling along and north of I-64 in response to a reinforcing cold front pushing south into the Ohio Valley. Plenty of sunshine on Wednesday as the high settles into the Great Lakes. Even going toward the higher end of temp guidance only gets us into the lower/mid 60s, which is 10-15 degrees below normal this deep into May.
After frontal passage Wednesday, expect cloudy/cooler conditions, with elevated convection possible.
The good news is that afternoon temperatures tomorrow will be much cooler and below normal for most locations with highs north of I-10 in the upper 60s/mid 70s and upper 70s south of I-10. High pressure builds in Wednesday night with rain chances tapering off across the north with lingering cloud cover.
848 PM EDT Tue May 11 2021 Strong high pressure in place across the central United States will be the primary influence on our weather through the workweek. A weak disturbance will pass across the northern portions of the forecast area through Wednesday morning, and a couple weak systems will approach the area this weekend as the High slowly weakens and shifts offshore. Given the position of the High a dry NW flow will prevail Wed/Thu, with temperatures slowly moderating through the period but still remaining 5-10 degrees below normal (i.
/22/ Tonight and tomorrow: Early afternoon water vapor imagery continues to depict a trough axis sliding out of the Rockies and into the Central Plains. Further east, over the Lower Mississippi Valley, predominately zonal flow aloft remains in place with a stalled cold frontal boundary draped across northern portions of the CWA. Locally heavy rain will also be possible with the highest totals expected over southern portions of the area where low- level ThetaE air and instability will be maximized.
616 PM CDT Tue May 11 2021 Clearing skies and diminishing winds will lead to a cold and frosty night across central Illinois as low temperatures dip into the lower to middle 30s. High pressure anchored over the Upper Midwest/Great Lakes continues to provide a cool/dry northeasterly flow across central Illinois. allowing lows to dip into the lower to middle 30s. After a cold/frosty morning, abundant sunshine will boost highs on Wednesday into the lower 60s.
630 PM CDT Tue May 11 2021 247 PM CDT High pressure ridges in over the next few days, keeping us dry and mostly sunny other than fair weather cumulus. High pressure will be stationed nearly on top of us overnight, leading to very light to calm winds. Continued sunny skies will allow high temperatures to climb a bit higher into the lower to mid 60s on Wednesday, except for near the lake, which will remain in the mid 50s. Nevertheless clear skies will allow several locations to radiate into the 30s again Wednesday overnight, especially locations that tend to be cooler.
931 PM EDT Tue May 11 2021 High pressure will build from the west across the area tonight through the end of the week. High pressure will build in from the west across the area later tonight and persist through Wednesday night, resulting in pleasant weather on Wednesday, albeit still below average in the upper 50s to lower 60s.
So, the frost advisory is in good shape and with the warmer temperatures today don't think we'll get quite as cold as last night. Overall, high pressure will dominate this period with another chilly night in the works. Given the evolving light winds with the high drawing even closer and clear skies will hoist another frost advisory.
High pressure centered over the Great Lakes will keep the weather cooler than normal and relatively quiet through the short term forecast period. Elsewhere, morning lows will drop into the lower to middle 40s.
830 PM CDT Tue May 11 2021 Clearing skies and diminishing winds will lead to a cold and frosty night across central Illinois as low temperatures dip into the lower to middle 30s. High pressure anchored over the Upper Midwest/Great Lakes continues to provide a cool/dry northeasterly flow across central Illinois. allowing lows to dip into the lower to middle 30s. After a cold/frosty morning, abundant sunshine will boost highs on Wednesday into the lower 60s.
626 PM CDT Tue May 11 2021 Cloud cover is increasing across the west and parts of the south as a trough develops to our west in central Montana. High pressure has brought mainly clear skies across the CWA today and dry conditions. Tonight looks to be slightly warmer than last night, with lows above freezing for most areas. A developing trough could increase cloud cover in the west tonight, and may bring an isolated shower across the southwest. A broad trough then sets up across the state on Wednesday. The result will be a slight increase in southerly winds, and slightly warmer temperatures in the mid to upper 60s. The mentioned trough will be unsettled enough to provide for isolated to scattered shower coverage throughout the day on Wednesday.
NW gradient flow will preclude frost formation, and advective cold will produce min temperatures in the lower 30s over the Laurel Highlands and parts of the NW Mountains. High pressure will provide fair and dry wx on Wednesday. Despite the cool NW breeze, max temps will be a few to several degrees warmer than Tuesday.
The Keys are laying south of an extended ridge associated with a high pressure system stretching from the western Atlantic through the entirety of the Gulf of Mexico, resulting in our winds remaining under an east to southeast flow. Moderate east to southeast breezes will prevail overnight at 10 to 15 knots before decreasing a few knots as the ridge continues moving to the east.
301 PM PDT Tue May 11 2021 High pressure will build over the region with warming temperatures and lessening wind.
404 PM PDT Tue May 11 2021 Updated Air Quality Issues section High pressure will build over the region with warming temperatures and lessening wind.
Temperatures will remain 10 to 15 degrees below average today as cool high pressure settles in from the north and clouds hang around, at least through early afternoon.
Cold front has pushed to the middle Texas coast early this morning. Convective development is possible over the higher terrain of the Serranias del Burro through much of today.
Surface to mid level ridging will remain in control providing a continuation of dry conditions and a bit below normal temperatures. Still plenty of sun tossed in, and with light winds it will be a very pleasant day with highs in the lower to middle 60s. The rest of the week should be mostly dry, as the surface and mid level ridge remains in control while slowly shifting toward the Ohio Valley by the weekend.
That in combination with the passage of the 850mb trough axis this morning through much of our region and thus, we just will not have much in the way of low level forcing either as has been the case the last several days. Sfc ridging remains to our northwest during the day Thursday but plentiful sun should counteract northeasterly winds at the surface, allowing for a descent warmup but still below normal temperatures. Afternoon highs on Thursday will range mostly in the lower to middle 70s. As talked about in previous discussions, upper level ridging to the west will usher in that dry air, which will keep clouds and rainfall to a minimum.
Today will generally be warm, about 5 degrees warmer than normal, with light breezes and mostly cloudy skies, especially after noon. Thursday continues the warming trend with temperatures a few degrees warmer.