Aikyam-Lab/Synoptic-Bench huggingface dataset:
Dry and mildly subsident west-southwest flow curving rounding the top of an upper ridge now over the state. Weak forcing aloft coupled with daytime heating may be sufficient to warrant the mention of isolated t-storms mainly over the higher terrain across the southwest corner of the CWA tomorrow afternoon. Southerly winds on the plains will also contribute to warmer temps.
1013 PM EDT Sat Oct 8 2016 Mid level trough axis in the process of crossing the western Great Lakes this evening. Overnight through Sunday: Mid level trough axis will cross into the eastern lakes region by morning with high pressure and mid level ridging building into the region through Sunday. High impact weather potential: None Broad upper trough across the NC US with cyclonic flow across the Great Lakes. Trough is moving east with axis expected to move through MI late tonight/Sunday morning.
rain and thunder chances will be on the increase as a cold front and upper system approach.
High pressure centered in eastern Missouri with a ridge up along the Mississippi river is slowly dropping south today. This is allowing for nearly ideal afternoon weather conditions of sunshine, 5 to 15 mph winds, and mild temperatures in the lower to upper 60s. Another cool night is in store, with temperatures in the upper 30s in northern valleys, while temperatures only dip to the lower to mid 40s in cities and ridge tops. The same can be said for Sunday, with some spotty cumulus possible thinning to clear by afternoon, highs will once again reach the lower 60s north to upper 60s/lower 70s south with generally light winds. ERVIN The main chance of rain looks to be mid-week when a strong cold front moves through the Midwest.
748 PM EDT Sat Oct 8 2016 High impact weather potential: None Broad upper trough across the NC US with cyclonic flow across the Great Lakes. Trough is moving east with axis expected to move through MI late tonight/Sunday morning.
Updated the hourly values to match with the slightly cooler trends in the northwest and warmer in the southeast.
721 PM EDT Sat Oct 8 2016 High pressure over Missouri will continue to build across the region tonight.
1138 PM CDT SAT OCT 8 2016 High pressure will dominate the weather across central Illinois tonight. Due to favorable radiational cooling conditions acting on a very dry airmass, 01z/8pm temperatures have already dropped into the lower to middle 50s across much of the KILX CWA. Overnight lows will fall into the lower to middle 40s. Very quiet weather expected in the short term, as high pressure drifts eastward across the upper Great Lakes. More of a southwest breeze on Sunday will set up, resulting in lows tonight a bit warmer, but still mainly in the mid 40s, cooler near the Indiana border. Sunday looking quite nice as well, a bit warmer as highs reach the lower 70s.
850 PM MST SAT OCT 8 2016 A low pressure trough moving through Arizona today will bring scattered showers and thunderstorms into this evening across higher terrain north and east of Phoenix. Progression will continue northeastward as the upper level low moves along.
High clouds will be on the increase Sunday afternoon and evening as an upper trough approaches from the west. Any precipitation associated with this trough will remain well west of the region where moisture will be more abundant. With clear skies, light northeast winds and the lower dewpoints, expect overnight lows in the upper 40s to mid 50s across the forecast area.
1235 AM EDT Sun Oct 9 2016 A cold front will cross the area overnight.
711 PM EDT Sat Oct 8 2016 A cold front will move east through the Mid Atlantic region tonight as Hurricane Matthew moves northeast along the Carolina coast.
A cold upper level trough will impact the northern Rockies south into northern Utah early in the week.
1145 PM EDT Sat Oct 8 2016 Mid level trough axis in the process of crossing the western Great Lakes this evening. Overnight through Sunday: Mid level trough axis will cross into the eastern lakes region by morning with high pressure and mid level ridging building into the region through Sunday. High impact weather potential: None Broad upper trough across the NC US with cyclonic flow across the Great Lakes. Trough is moving east with axis expected to move through MI late tonight/Sunday morning.
High pressure is settling into the region with dry air (37 degree dew point at Clarksville!) and very fall-like temperatures.
1141 PM CDT Sat Oct 8 2016 High pressure centered right over the Missouri Ozarks resulted in fabulous weather conditions today. This high will slowly slide southeast of the region tonight and Sunday resulting in a slow return to southerly winds. Lows tonight will dip into the lower to middle 40s, with upper 30s possible across the eastern Ozarks. Highs on Sunday will warm into the lower 70s.
1113 PM EDT Sat Oct 8 2016 A cold front will cross the area overnight.
Tomorrow NE/E around 10 kts by 09/15Z as high pressure continue through the weekend. We will keep a west to east gradient across our region on Sunday as well with daytime highs near observed highs today or a degree or two warmer.
636 PM CDT SAT OCT 8 2016 Main weather concern is the potential of another night of near freezing temperatures. There were many areas that had frost this morning, especially across west central Minnesota where temperatures fell to near, or below freezing for several hours. Therefore, will continue to headline these areas for tonight as temperatures fall into the low to mid 30s. Frost/freezing temperatures and timing of cold fronts will be the main concern in the longer term.
A large high pressure is building into the Eastern united states and the Gulf of Mexico. Ridging is in place through the lower and mid levels with nebulous flow at the higher levels. Short Term Update - High pressure will continue to build eastward across the United States and southward into the Gulf of Mexico. Low to mid level ridging will keep rain chances slim to none through the overnight period. High pressure in the central United States spreading east and southward will turn light winds northerly through the overnight period.
716 PM EDT Sat Oct 8 2016 High pressure will gradually clear skies this evening as it builds in from the west.
1020 PM CDT Sat Oct 8 2016 A warm front has stalled across the far southeastern CWA this morning, bringing warm temperatures in the 70s to portions of eastern Nebraska and northwestern Iowa. Further north however, temperatures nearly 20 degrees colder were found along the highway 14 corridor. High pressure will drift into the western Great Lakes overnight, with winds turning light over the Buffalo ridge area.
A cooler, drier airmass will continue to push south across the fa overnight. An upper level longwave trough passing over the Great Lakes will usher in cooler and drier air behind an advancing cold front this evening. Overnight lows tonight will range from the low to mid 50's inland to around 60 near the coast. Pleasant weather sets in Sunday, with sunny skies and afternoon highs ranging from the low to mid 80's across the area.
Tomorrow sfc winds will veer a bit NE/E around 10 kts by 09/15Z as high pressure continues through the weekend. A cool night in store with lows near 40 across Southeast Oklahoma to the lower 50s across lower parts of Northwest and North Central Louisiana.
520 PM MDT Sat Oct 8 2016 Upper level analysis shows low-amplitude ridge over the northwestern CONUS. At the surface, the stationary boundary continues to stretch across the CWA, with high pressure to the north. Winds will increase from the south tonight, as high pressure slides to the east. Dry weather will continue as upper ridge axis passes over the northern plains Sunday. Flow will become southwesterly, and warmer air will advect into the region. Tight pressure gradient between exiting high and approaching low pressures will result in gusty southerly winds across central SD in the afternoon.
708 PM EDT Sat Oct 8 2016 High pressure over Missouri will continue to build across the region tonight.
One more warm day before cold front comes in from the north.
The latest surface map features Mathew hugging the Carolina coast, with high pressure currently centered across the Midwest, with surface ridging nosing in across the Ohio Valley. High pressure will continue to build in across the Great Lakes and Ohio Valley regions through Sunday night. This will allow for cooler and drier conditions across eastern Kentucky. Lows will range from the low to mid 40s.
1228 AM EDT Sun Oct 9 2016 High pressure will gradually clear skies this evening as it builds in from the west.
A cool night in store with lows near 40 across Southeast Oklahoma to the lower 50s across lower parts of Northwest and North Central Louisiana. Tomorrow NE/E around 10 kts by 09/15Z as high pressure continue through the weekend.
644 PM CDT SAT OCT 8 2016 A bubble of high pressure centered over Missouri has been cut off from its larger parent high which is centered over southern Canada. This yielded temperatures in the low to mid 40s except in the heat island of St. MOS highs in the low to mid 70s look reasonable with the aforementioned west-southwest flow, so have followed it closely.
1048 PM CDT SAT OCT 8 2016 Main weather concern is the potential of another night of near freezing temperatures. There were many areas that had frost this morning, especially across west central Minnesota where temperatures fell to near, or below freezing for several hours. Therefore, will continue to headline these areas for tonight as temperatures fall into the low to mid 30s. Frost/freezing temperatures and timing of cold fronts will be the main concern in the longer term.
/00z Update/ High pressure will remain over the region with VFR conditions expected through the period at the I-35 sites. Upper air analysis this morning showed a weak ridge building over Texas. At the surface, high pressure was settling in and winds were from the northeast. The upper level ridge will strengthen tonight and then begin to move to the east. The low level flow will continue to be from the northeast to east bringing drier air to the region.
638 PM CDT SAT OCT 8 2016 Very quiet weather expected in the short term, as high pressure drifts eastward across the upper Great Lakes. More of a southwest breeze on Sunday will set up, resulting in lows tonight a bit warmer, but still mainly in the mid 40s, cooler near the Indiana border. Sunday looking quite nice as well, a bit warmer as highs reach the lower 70s.
Temperatures will be on the rebound for the late week and into the weekend as a warm front will be lifting back Northeast in wake of the high pressure over the area shifts east and ahead of the next storm system taking shape out to the West, and with weakly amplified ridging aloft across the central parts of the country. The next upper level closed low will be moving from near the Four Corners area Southeast across the Western sections of the country and across New Mexico, West Texas and into the plains. With returning moisture ahead of the approaching storm system and back side of the departing upper ridge, showers and thunderstorms will be on the increase over Texas and into the central sections of the country.
106 PM CDT Thu Mar 30 2017 H5 analysis from earlier this evening had a closed low over central Kansas with a trough extending south into northern Mexico. Downstream of this feature, low amplitude ridging extended from northern Georgia into the LP of Michigan. West of the closed low, A ridge of high pressure extended from Utah into Wyoming. West of this ridge, a trough of low pressure was present off the coast of Washington and Oregon. At the surface, low pressure was present over eastern Kansas. A warm front extended east of the low with a cold front extending south of this low into eastern Texas. For tonight, an upper level trough of low pressure will track across Nevada, closing off over the four corners by 12z Friday.
Subtle ridging is noted over the Rocky Mountains, as well as another ridge over the Ohio River Valley. Enhanced upper tropospheric jet energy extends from the lower Mississippi Valley, north/northeast into the Great Lakes, and then east into southeastern Canada and the northeastern CONUS.
245 PM CDT Thu Mar 30 2017 Quiet but cloudy weather is expected tonight as a ridge of high pressure prevails across the region. Low level moisture progs suggest the low stratus will remain in place overnight, with slow clearing on Friday. Low temps tonight should be in the mid 30s, with highs on Friday a little warmer in the mid 50s. The upper trough across the west coast will continue to deepen into a closed low as it moves into the 4 corners region tomorrow.
410 PM EDT Thu Mar 30 2017 The period will begin with upper level low progressing into New England states and upper level ridging building in the wake.
An upper ridge builds in tomorrow, which will bring dry and warmer weather to our area.
344 PM EDT Thu Mar 30 2017 Wrapped-up low pressure will bring rain showers to the upper Ohio Valley through Friday. Rain showers will continue early Friday as the upper low moves overhead.
254 PM CDT Thu Mar 30 2017 18Z surface data has low pressure near KSTL. A warm front extended from the low into central Indiana.
The storm system will move east tonight, bringing its cold front through the area. Behind the front, the mid/upper low will be moving eastward over the area on Friday, bringing scattered showers.
/issued 318 AM CDT Thu Mar 30 2017/ Upper ridging looks to develop overhead today and with modest southwest winds returning at the surface, a considerable warmup is expected today with highs generally in the 80s. We could have some weak upper forcing available from the approaching upper low so there may be potential for one or two late night thunderstorms.
A cold front will cross the region from the Northwest late Friday. A prefrontal trough is expected to produce convection over the region ahead of the front for late Tonight into Friday afternoon.
Isolated to scattered rain showers in the wake of the line of thunderstorms and along a weak cold front approaching the region from the northwest will linger through this evening, and then finally move east of the forecast are by late tonight as the front passes through.
An upper level trough will continue to move across the western U. The trough axis currently extends from north-central Washington south to north-central California. The trough axis will be along the Washington/Oregon/ Idaho border by late this afternoon.
A low pressure system continues to dig south this afternoon through Nevada with moisture circulating around this feature into central Idaho. Further north across west central and northwest Montana, most locations will remain dry with a few showers, generally over the higher terrain. Drier air will filter into the region tomorrow morning as high pressure builds into western Montana and central Idaho.
343 PM EDT Thu Mar 30 2017 Low pressure approaching from the Ohio valley will slide across the Mid-Atlantic Friday and Friday night.
With the associated closed upper low in eastern MO also tracking slowly eastward, this will maintain the cyclonic flow/low stratus across the ARX cwa. Northerly winds will feed cool air into the cwa with lows in the lower 30s. Friday: Gradually the storm system moves into the OH Valley allowing high pressure ridge to begin building into the cwa, from northwest to southeast.
1238 PM CDT Thu Mar 30 2017 The low pressure center that brought scattered storms to the area last night will make its way slowly across the Ozarks region during the day today. As the low tracks over the area, scattered showers are expected to occur through the morning and into this afternoon. The low will keep the region under cloudy skies and have knocked high temperatures for today down as a result of the combination of precipitation and cloud cover. The low will track east of the area tonight bringing the rain chances to an end for a few days. Temperatures will fall into the lower 40s as skies slowly clear.
Utilized the 12km NAM-WRF/CMCnh as base templates for dry slot and lingering showers around the upper low. I would not be surprised if there was an isolated hail report (less than one quarter inch) with the passage of the upper low in the vicinity early Friday morning.
There are some breaks in the low clouds across eastern Oklahoma per latest vis imagery, so there may be temporary holes that develop within the low cloud deck with afternoon mixing. /Issued 1124 AM CDT Thu Mar 30 2017/ It will be a slow warmup today, with widespread wrap around clouds/cyclonic flow associated with the departing upper low.
649 PM EDT Thu Mar 30 2017 High pressure will crest over Quebec overnight and then move east Friday.
With long east fetches and land/water differential heating, there should be a moderate lake breeze set up again Friday, resulting in high temps occurring midday near the big lake, with increasing on shore east/northeast winds and cooler temps pushing inland as the afternoon progresses.
Most of the area will be dry and mild today with an upper level ridge centered on North Dakota through the early afternoon. By the afternoon hours rain showers may develop across western North Dakota as the ridge flattens out and pushes east and an upper level wave approaches. Temperatures today should be similar to or slightly cooler than yesterday.
1225 PM CDT Thu Mar 30 2017 Slow moving upper level low, now moving eastward over southwest Missouri, will promote MVFR ceilings across the northern third of the forecast area through much of the period. 55 The cold front is pushing east though central sections of the state this morning. A cold front has pushed east into WRN AR. expect at least some clearing and warmer temps in the 60s and even some 70s.
318 PM EDT Thu Mar 30 2017 Low pressure approaching from the Ohio valley will slide across the Mid-Atlantic Friday and Friday night.
Rua Behind the departing frontal boundary, a cooler and drier air mass will move in for tonight.
Latest water vapor imagery shows a sharp trough digging over the West Coast and southwest flow over the Central Great Basin-Central Rockies with a low amplitude ridge over the Central Plains. The mid-level trough will continue to amplify and develop into a closed low this evening over the southwest US and then the 500 hPa low will move slowly into the Four Corners region tomorrow. Late tonight/early tomorrow morning the first disturbance from the closed low is expected to lift northward through western NEB. The combination of clouds and easterly flow, the latter keeping cooler air entrenched aloft, will lend to below normal highs tomorrow -- coolest in western NEB.
On Friday high pressure becomes a little more dominant over our area, and there are indications that some of the clouds could break over our area in the afternoon. With that, highs should be a little warmer, ranging from lower 50s east to mid and upper 50s through the James/Missouri River Valleys.
352 PM CDT Thu Mar 30 2017 (Tonight and Friday) It will be warmer tonight with south winds of 10 to 15 mph bringing increase atmospheric mixing.
A cold front is approaching the Mississippi River at this hour and will move east into the state early tomorrow morning.
The low pressure disturbance moving inland this afternoon is already starting to split and close off the the southern end over Nevada and Utah. The surface cold front moved through Burley near 1 pm MDT with gusts to 40 mph. The SNOTEL reporting stations may not be very reliable, Galena at 7470 feet elevation has reported temperatures at times above freezing, Grand Targhee at elevation 9260 feet reports 4 inches of snow so far.
559 PM CDT Thu Mar 30 2017 Quiet but cloudy weather is expected tonight as a ridge of high pressure prevails across the region. Low level moisture progs suggest the low stratus will remain in place overnight, with slow clearing on Friday. Low temps tonight should be in the mid 30s, with highs on Friday a little warmer in the mid 50s. The upper trough across the west coast will continue to deepen into a closed low as it moves into the 4 corners region tomorrow.
Strong southwest winds will continue into this evening as a strong cold front moves into Arizona. This cold front will move through the state tonight and early Friday, producing rain and snow showers along with a few thunderstorms.
309 PM CDT Thu Mar 30 2017 Vertically-stacked low pressure system pushed across the KS/MO border this afternoon, with showers rapidly dissipating as the attendant synoptic lift likewise waned. A northerly fetch will persist in the wake of the low through tonight, which will aid in keeping low stratus clouds in place well into tomorrow and keep high temperatures slightly below normal for this time of year. Surface ridging builds over central Kansas overnight with winds decreasing throughout the afternoon and evening today. Despite the continuing overcast skies, fog may develop close to the ridge axis (primarily west of Manhattan) owing to the recent 2-4 inches of rain that fell over the region over the last 48 hours, helping to recharge the sub-surface soil moisture. Northeasterly flow off the departing ridge on Friday will not bode well for clearing out clouds quickly tomorrow.
High pressures building over the region tonight and Friday will provide dry and slightly warmer weather.
Cooler air will filter in overnight with lows bottoming out around 50 degrees. The aforementioned upper level low will lift northeast of our area by late Friday morning.
535 PM EDT Thu Mar 30 2017 Wrapped-up low pressure will bring rain showers to the upper Ohio Valley through Friday. Rain showers will continue early Friday as the upper low moves overhead.
Mid/upper level low pressure currently located directly overhead this morning. The cold front will pass through east central KS and generate scattered showers. The highest totals will be across western portions of the forecast area where the trowal is expected to linger and regenerate showers. The gusty winds will cover most of the area today, but are forecasted to gradually decrease through out the day as high pressure builds in behind the system. Once the cold front moves through temperatures will generally be in the 40s today with mostly cloudy skies. A brief break from precipitation is expected Friday as a weak ridge develops between the exiting trough to the east and the next approaching system over the Rockies.
418 PM MDT Thu Mar 30 2017 Deep upper level low will push into the Four Corners late tonight and Friday. Warm conditions ahead of the low will keep snow levels up above the 9k mark with levels dropping later tonight as cold air wraps around the low and infiltrates the region.
The return of sunshine will bring much warmer temperatures Friday.
Parent stacked/occluding low pressure system now over SW Missouri with a warm front stretching eastward through the Ohio Valley. A bit of a coupled upper jet structure across lower Michigan with a jet core stretching across Ontario/Quebec and another core punching up into the midwest along the eastern fringe of the closed low. Precipitation has been most persistent across central and southern lower Michigan today well north of the surface warm front. I believe bulk of precip will be a rain-snow mix or just flat out wet snow particularly into the higher terrain areas.
A clear, quiet and cool night is on tap tonight as weak ridging aloft briefly dominates across the area. A weak to moderate onshore flow is expected to return overnight tonight and strengthen to moderate, to occasionally strong, levels Friday as the high pressure moves east of the area and low pressure deepens across West TX.
141 PM EDT Thu Mar 30 2017 A warm front lifts through tonight, followed by a cold front late tonight into Friday.