Aikyam-Lab/Synoptic-Bench huggingface dataset:
Showers and storms are ongoing along and south of a warm front draped across Eastern Colorado and Northwestern Kansas. A warm front extends from around Atwood and Oberlin to Goodland and Tribune. Isolated to scattered thunderstorms will be possible along and west of the warm front through this evening before dissipating. High temperatures are expected to be in the low to upper 90s.
314 AM CDT Sun May 31 2020 Quiet weather will continue today as the region is between troughing to the east and ridging across the Central Plains. High temperatures will range from the lower to mid 80s in the north to the upper 80s in the south, potentially touching 90 degrees in a few spots.
An upper level low is centered over northeastern Mexico this morning producing isolated showers and thunderstorms over South Texas. The upper low will drift around northern Mexico for the next 24 to 36 hours. The low level flow will be generally from the east during this period.
A sfc cold front will continue to slide offshore tonight as an upper level trough slides eastward. Meanwhile, high pressure will build into the area through Sunday under northwest flow aloft. Lows tonight will be in the low to mid 60s northwest of I-65 to upper 60s and low 70s southeast of the interstate.
Model solutions still show significant disagreement for the week on how to resolve this low system off the west coast and whether it will be a precip producer for the region.
A cold front will then bring windy but drier conditions for much of the day on Sunday with continued above normal temperatures.
Strong upper ridge with it's axis moving into the Dakotas this evening will allow SW flow to bring in warmth, moisture and instability into the area for Sunday.
With high pressure in control. High pressure continues to build in from the north.
Otherwise, the 500mb ridge currently over the Rockies will amplify today with strengthening 850mb winds from the southwest, helping to warm temperatures to the low to mid 80s. Have trended on the warmer side of guidance as decent mixing should allow southerly winds to increase to 10-20 mph with gusts of 20-30mph, strongest toward central KS. While the NAM/GFS/ECMWF have backed off on this potential the last couple of days, short-term guidance (namely the 00Z HRRR/HRRRv4 and 03Z RAP) have all picked up on small chances of showers associated with a subtle mid-level wave on the periphery of the ridge.
High pressure will continue to build into the area today as well as much of the eastern CONUS.
Canadian high pressure building over central Indiana will keep below normal temperatures and dry weather in place over the area through Monday. Temperatures will start to rebound after that as the cool high moves off to the east and upper ridging builds over the area. Canadian high pressure building over central Indiana will keep dry and cooler than normal conditions over the area Sunday, with Monday starting to warm closer to normal (which is mid to upper 70s this time of year). By Monday afternoon, though, warm advection starts to ramp up significantly as the Canadian high pressure moves off to the east and return flow develops.
1151 PM CDT Sat May 30 2020 Water vapor imagery shows strong upper ridging across the central to northern High Plains, with NW flow aloft continuing across the CWA. from the mid 60s over Holt and Boyd counties to the lower 80s across Chase and Hayes counties. The upper ridge and thermal ridge centered over the central to northern Rockies will slide eastward across western and central Nebraska tomorrow.
A warm front extends from around Atwood and Oberlin to Goodland and Tribune. Isolated to scattered thunderstorms will be possible along and west of the warm front through this evening before dissipating. High temperatures are expected to be in the low to upper 90s.
321 AM CDT Sun May 31 2020 The predawn hours saw some hit or miss showers/storms develop across mainly our central/eastern zones in a warm air advection regime on the nose of the low level jet. Otherwise today we'll be warming up today with rising heights as an upper ridge axis which has been oriented over the Rockies builds onto the plains. Warmer air will advect east, with H85 temps rising roughly 5C from yesterday to today. The warm airmass and steady southerly winds will hold up low temps tonight in the mid 60s which will be roughly 5 to 10 degrees warmer than the past couple of nights.
Light west southwest winds will veer northwesterly by 12Z across the TAF sites around 5-10 knots as a cold front moves into the area. Winds will veer again after 00Z to the east as light onshore flow develops with high pressure building north of the region with some MVFR ceilings possible at SSI to end the TAF period. Another favorable area for convection this evening will be over interior se Ga ahead of an approaching cold front.
347 AM CDT Sun May 31 2020 (Today and Tonight) An upper low, moving north up the Lower Rio Grande Valley early this morning, will bring a chance of showers and thunderstorms to the I- 10 corridor and Northwest Hill Country. Increasing cloudiness and storms associated with the upper low will keep highs in the lower to mid 80s.
1217 AM EDT Sun May 31 2020 A secondary cold front will cross the area late tonight into Sunday morning.
Tonight Through Monday Not much going on in the short term, as high pressure will remain in control.
300 AM MDT Sun May 31 2020 Current surface map places high pressure across the upper midwest/western Great Lakes with warm front across central Montana into eastern Wyoming. Large area of pressure falls across the northern plains with warm front easing eastward today. Low level temps surge upwards, with highs 15-20F warmer than yesterday. Weak cold front/wind shift slips through the area Monday, with boundary layer flow becoming easterly Monday afternoon. Conditions will improve from west to east Sunday morning, as a warm front moves through the area.
High pressure will be drifting SE from the upper MS Valley to the lower Great Lakes and OH Valley region over the next 24 hours, providing mostly clear skies with comfortably low dewpoints. High pressure to the north will bring mostly clear skies, and light winds. AD Chattanooga Airport, TN 82 56 84 62 89 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 78 52 81 60 87 / 0 0 0 0 0 Oak Ridge, TN 79 52 82 60 88 / 0 0 0 0 0 Tri Cities Airport, TN 75 47 77 54 84 / 0 0 0 0 0.
/issued 121 PM CDT Sat May 30 2020/ One more day of quiet weather is anticipated Sunday as an upper level ridge of high pressure remains the dominant feature. That will change by Sunday night through Monday, across mainly west Texas, as an upper level low pressure area tracks north from Mexico into the Permian Basin.
1150 PM CDT Sat May 30 2020 High pressure over the upper Mississippi Valley will gradually move southeast over the next few days bringing dry conditions and below normal temperatures.
1200 AM EDT Sun May 31 2020 Quiet and cool weather will persist the rest of the weekend as high pressure remains over the area.
With upper-ridge in place, mostly clear skies to prevail tonight with the exception of thin cirrus along and south of I-20.
Expect to see another gradual uptick in max temps on Mon, with portions of central KS reaching the lower 90s.
An upper level ridge will prevail over the greater region today. A lee trough will also prevail. Diurnal convection looks again to pop off the higher terrain of Colorado. Since the ridge is overhead, am not expecting much movement with the activity. The ridge looks to dominate much of the forecast through midweek. Lee troughing will also prevail each day.
Water vapor imagery indicates a strong upper low propagating northward across the western CONUS. There is a strong upper ridge that will build into the region today, and the main upper level wave will continue to propagate around the top of this ridge. Anticipate a broken line of storms on the leading edge of stronger warm air advection tonight, with a thermal ridge across the region on Monday. Thermal ridge will be across the region, with a favorable low level westerly flow for maximizing temperature.
Today will be a couple degrees warmer than yesterday, with highs in the upper 70s to low 80s.
High pressure has brought beautiful weather to eastern Iowa and northwest Illinois. Lows will range from the lower 40s in the NE to the lower 50s far southwest. The comfortable temps and low humidity continue for Sunday with highs in the low 70s on average, which is about 5 degrees below normal. A storm system passing to our north will lift a warm front across the area through the day on Monday.
258 AM EDT Sun May 31 2020 Noticeably cooler conditions will close out the month of May with below average temperatures continuing for the start of June.
However the HREF ensemble storm attributes show a possible severe storm scenario for North Dakota, consisting of thunderstorms forming across the high plains of Montana and moving into North Dakota.
Temperature-wise, today will be similar to yesterday, albeit a few degrees warmer.
213 AM EDT Sun May 31 2020 High pressure will spread across the region from the northwest through tonight, then will move east toward the coast on Monday.
117 AM CDT Sun May 31 2020 Area of mid-level cloud cover and scattered showers have persisted across northern Missouri for much of the day, and this general trend should continue for the next 12-18 hours as a weak surface warm front lifts north and isentropic ascent remains.
As a weak frontal boundary slowly moves through today, it will be followed up by high pressure building in from the Ohio Valley.
418 AM EDT Sun May 31 2020 High pressure and a dry and cool airmass will be in place for the start of the week.
A slow moving low pressure system is slowly making is way into the Northern Rockies this morning. Numerous showers and thunderstorms, some strong, extend off this low from Eastern Washington and Oregon into Southern Idaho.
813 AM EDT Sun May 31 2020 High pressure will maintain dry and cooler than average weather through Monday. Clouds associated with mid-level vorticity in troughing aloft will continue to sink southward across the region this morning. Only minor tweaks were made to afternoon high temperatures, which will top out around 10 degrees below normal as the 850mb thermal trough crosses. High pressure will maintain dry conditions on Monday with temperatures increasing back to normal values for this time of year.
High pressure was providing clear skies and chilly conditions overnight. Will keep the Frost Advisory going across central WI as readings across that area will likely dip into the lower 30s early this morning. For today, the area of high pressure will slide into the Great Lakes region, setting up southerly winds and slightly warmer temperatures. Will likely see some increase in high clouds later in the afternoon ahead of an approaching warm front. Warm air advection and increasing moisture transport will nose into the area tonight as a warm front lifts out of the Plains into the region. Scattered showers and a few thunderstorms will be seen Monday as the warm front continues to push northeast into the area.
/issued 402 AM EDT Sun May 31 2020/ A weak cold front will be draped over north Florida today. This will push the ridge into south Florida and shift our winds to a more southwest and west direction.
Otherwise, the 500mb ridge currently over the Rockies will amplify today with strengthening 850mb winds from the southwest, helping to warm temperatures to the low to mid 80s. Have trended on the warmer side of guidance as decent mixing should allow southerly winds to increase to 10-20mph with gusts of 20-30mph, strongest toward central KS. While the NAM/GFS/ECMWF have backed off on this potential the last couple of days, short-term guidance (namely the 00Z HRRR/HRRRv4 and 03Z RAP) have all picked up on small chances of showers associated with a subtle mid-level wave on the periphery of the ridge.
State remains under northwesterly upper flow between the east coast/western Atlantic trough and the southern plains ridge through the short-term forecast period. The upper ridge centered west of the MS River will expand across the southeast through the period.
542 AM EDT Sun May 31 2020 High pressure will spread across the region from the northwest through tonight, then will move east toward the coast on Monday.
618 AM EDT Sun May 31 2020 High pressure and a dry and cool airmass will be in place for the start of the week.
627 AM CDT Sun May 31 2020 A few sites around the Bemidji and Park Rapids area are currently near or just below freezing. Water vapor imagery indicates upper ridging building into the region. Water vapor imagery indicates a strong upper low propagating northward across the western CONUS. There is a strong upper ridge that will build into the region today, and the main upper level wave will continue to propagate around the top of this ridge. Anticipate a broken line of storms on the leading edge of stronger warm air advection tonight, with a thermal ridge across the region on Monday. Thermal ridge will be across the region, with a favorable low level westerly flow for maximizing temperature.
449 AM MDT Sun May 31 2020 Current surface map places high pressure across the upper midwest/western Great Lakes with warm front across central Montana into eastern Wyoming. Large area of pressure falls across the northern plains with warm front easing eastward today. Low level temps surge upwards, with highs 15-20F warmer than yesterday. Weak cold front/wind shift slips through the area Monday, with boundary layer flow becoming easterly Monday afternoon.
614 AM CDT Sun May 31 2020 The predawn hours saw some hit or miss showers/storms develop across mainly our central/eastern zones in a warm air advection regime on the nose of the low level jet. Otherwise today we'll be warming up today with rising heights as an upper ridge axis which has been oriented over the Rockies builds onto the plains. Warmer air will advect east, with H85 temps rising roughly 5C from yesterday to today. The warm airmass and steady southerly winds will hold up low temps tonight in the mid 60s which will be roughly 5 to 10 degrees warmer than the past couple of nights.
A robust onshore flow during the past couple of days has brought a refreshingly cooler air mass into the central California interior. In the broader picture, a dry southwesterly flow aloft will reside over the Golden State during the next couple of days as another upper level trough develops over the Eastern Pacific.
/issued 251 AM CDT Sun May 31 2020/ Yet another day of quiet weather is on tap across the area as upper level ridging remains overhead (albeit gradually weakens through the day). These SE winds combined with slightly cooler temperatures aloft will allow this afternoon's highs to be a few degrees cooler compared to yesterday. This will lead to slightly warmer overnight temperatures and the potential for patchy fog or low clouds to develop around daybreak tomorrow. The improved moisture and proximity of the low will support the risk of a few showers and weak thunderstorms Monday afternoon into Monday night, favoring our southern and southeastern zones. In addition, the improved moisture and cloud cover will secure temperatures slightly below average, with highs mostly in the lower to middle 80s on Monday.
1006 AM EDT Sun May 31 2020 High pressure and a dry and cool airmass will be in place for the start of the week.
621 AM EDT Sun May 31 2020 A cold front crossed the region earlier this morning accompanied by scattered showers. Much cooler and drier air follows for today with temperatures running below normal into the first part of the work week.
532 AM EDT Sun May 31 2020 High pressure will maintain dry and cooler than average weather through Monday. Daytime max temperatures will top out around 10 degrees below normal on average with upper troughing and cool northwesterly flow in place. High pressure will maintain dry conditions on Monday with temperatures increasing back to normal values for this time of year.
/issued 402 AM CDT Sun May 31 2020/ Short Term [Today and Monday] This morning's surface analysis shows a 1020 hPa surface anticyclone centered over the Great Lakes and Upper Mississippi River Valley. A weak cold front extending along the southern periphery of this anticyclone is located over CWA where isolated to scattered showers are noted in the regional radar mosaic. The surface boundary is expected to remain along the immediate coast today and Monday as the high pressure shifts southeastward.
The air mass will be a little warmer, and surface dew points should be a bit lower but mainly just from the mixing that occurred yesterday and again this afternoon.
402 AM CDT Sun May 31 2020 Short Term [Today and Monday] This morning's surface analysis shows a 1020 hPa surface anticyclone centered over the Great Lakes and Upper Mississippi River Valley. A weak cold front extending along the southern periphery of this anticyclone is located over CWA where isolated to scattered showers are noted in the regional radar mosaic. The surface boundary is expected to remain along the immediate coast today and Monday as the high pressure shifts southeastward.
632 AM CDT Sun May 31 2020 High pressure was providing clear skies and chilly conditions overnight. Will keep the Frost Advisory going across central WI as readings across that area will likely dip into the lower 30s early this morning. For today, the area of high pressure will slide into the Great Lakes region, setting up southerly winds and slightly warmer temperatures. Will likely see some increase in high clouds later in the afternoon ahead of an approaching warm front. Warm air advection and increasing moisture transport will nose into the area tonight as a warm front lifts out of the Plains into the region. Scattered showers and a few thunderstorms will be seen Monday as the warm front continues to push northeast into the area.
Upper ridge builds over the Panhandles today through Monday before breaking down Monday night. A closed upper low over Deep South Texas today will track northwest along the Rio Grande River tonight and expected to be located over the Big Bend of southwest Texas Monday and Monday night. Inverted upper trough over the Panhandles Monday night with any convection remaining well south and also west and north of the Panhandles through Monday night.
Of all the 12Z balloon launches here the highest dewpoint for May 31 has been 51 degrees. This is one hint things may be more active though this low level moisture will get mixed out through the afternoon. Drier conditions forecast to the West but with the jet aloft some isolated late day storms on the ridge tops probably can not be ruled out. The early week period will be fairly static as the trough in the West get separated from the faster flow to the north. and a closed low forms off the SoCal Coast. The GFS especially has wavered quite a bit over the past several days of just when this low is going to get kicked back into the flow and progress eastward.
515 AM EDT Sun May 31 2020 High pressure will maintain dry and cooler than average weather through Monday. Daytime max temperatures will top out around 10 degrees below normal on average with upper troughing and cool northwesterly flow in place. High pressure will maintain dry conditions on Monday with temperatures increasing back to normal values for this time of year.
929 AM EDT Sun May 31 2020 A cold front crossed the region this morning ushering in much cooler and drier air with temperatures running below normal into the first part of the work week.
Light W to NW flow today between a strengthening ridge in the GOMEX and a weak trough moving offshore into the western Atlantic. Temperatures this afternoon will reach the low 90s inland and upper 80s to around 90 along the coast. Storms expected to develop around 17Z and last through 01Z, with the highest coverage likely 20-24Z.
511 AM EDT Sun May 31 2020 Noticeably cooler conditions will close out the month of May with below average temperatures continuing for the start of June.
While a few wind gusts are possible with the storms, it doesn't look like that would be the main threat as the lowest levels of the atmosphere look to be fairly stable.
/issued 303 AM CDT Sun May 31 2020/ An anomalous upper-level ridge will maintain a hold on our weather pattern for a few more days, providing warm and dry weather across the Mid-South. This ridge, currently extending poleward along the spine of the Rocky Mountains will slowly shift east as the Hudson Bay trough affecting the eastern CONUS lifts northeast over the Canadian Maritimes early in the week. Trapped beneath the ridge, an upper-level low over northeast Mexico will meander over the Southern Plains for a few days but won't have much affect on our weather until closer to midweek.
927 AM CDT Sun May 31 2020 Dry and pleasant weather will prevail in central Illinois into Monday, as high pressure drifts across the Midwest.
642 AM EDT Sun May 31 2020 High pressure will spread across the region from the northwest through tonight, then will move east toward the coast on Monday.
Pronounced upper ridge axis has shifted over the Montana/Dakota border this morning. Upper trough over Pacific NW will eject a vigorous short wave trough up and over the ridge today in a ridge breaking pattern. This will drag a weak cold front across our CWA along with an associated weak lobe of vorticity.
A dry upper level trough will move over the area tonight and Monday for morning clouds and afternoon sunshine.
A weak upper trough will persist over the area for some cloud cover and cooler than normal temperatures on Monday.
/28/ Quiet weather will continue today as the region is between troughing to the east and ridging across the Central Plains. High temperatures will range from the lower to mid 80s in the north to the upper 80s in the south, potentially touching 90 degrees in a few spots.
A tightening surface pressure gradient, as high pressure departs east and low pressure moves in from the west, will result in southerly breezes with gusts above 30 mph at times (most likely across central South Dakota). Scattered thunderstorms are expected to develop across western South Dakota this evening in the vicinity of a trough of low pressure, and some may hold together, become elevated, and track across the northern CWA through the overnight with help from strong WAA and a developing LLJ. Temperatures will be noticeably warmer, even hot, on Monday as the upper-level ridge will be squarely overhead.
702 AM EDT Sun May 31 2020 Noticeably cooler conditions will close out the month of May with below average temperatures continuing for the start of June.
/issued 347 AM CDT Sun May 31 2020/ (Today and Tonight) An upper low, moving north up the Lower Rio Grande Valley early this morning, will bring a chance of showers and thunderstorms to the I- 10 corridor and Northwest Hill Country. Increasing cloudiness and storms associated with the upper low will keep highs in the lower to mid 80s.
708 AM EDT Sun May 31 2020 Noticeably cooler conditions will close out the month of May with below average temperatures continuing for the start of June.
However, with that being said, descent provided by the mid and upper level ridge will suppress more large scale shower activity and growth and will limit coverage to isolated for today.
Later this moning or early afternoon expect smaller temperature rises as cool north winds of 10 to 15 mph bring cooler air from the north. High pressure will continue to bring VFR flight rules through the next 24 hours with mostly clear skies. AD Chattanooga Airport, TN 82 57 83 62 87 / 0 0 0 0 0 Knoxville McGhee Tyson Airport, TN 79 53 81 60 86 / 0 0 0 0 0 Oak Ridge, TN 79 53 81 60 86 / 0 0 0 0 0 Tri Cities Airport, TN 76 46 77 53 82 / 0 0 0 0 0.