Aikyam-Lab/Synoptic-Bench huggingface dataset:
921 AM EDT TUE AUG 23 2016 Sunrise on the Florida Keys shows a cloud line has already formed along the Lower Keys. The tail end of a trough is stalled over north Florida and the northern Gulf Coast, with a large area of high pressure centered over the eastern United States. The stalled trough over north Florida will erode as high pressure over the eastern United States builds southward through Wednesday night. The axis of this ridge will stay to our north forcing winds out of the northeast to east, and a wind surge is expected tonight.
740 AM EDT TUE AUG 23 2016 High pressure will move off the east coast Wednesday.
mainly to illustrate the low level clouds currently moving in along the coast near North Bend and into the Coquille valley.
/issued 303 PM CDT WED AUG 10 2016/ High pressure remains situated well to our southeast over the Caribbean Sea with a weakness edging onto the Western Gulf coastline. To our west, respectable trough axis is allowing the upper jet to dip into the desert southwest before swinging into the Northern Plains.
1006 PM EDT WED AUG 10 2016 Upper ridge to the east through the week.
our region will remain on the subsident side of the upper low. with any convection redevelopment expected to be closer to the circulation center of the upper low. before sct convection develops again by mid to late morning Thursday especially over portions of Scntrl AR/Ncntrl LA as the low continues to drift W towards far SE LA. additional elevated cigs may redevelop late over NE LA as the upper low continues its slow wwd drift.
/Issued 253 PM CDT WED AUG 10 2016/ Continued, worsening heat and humidity is the immediate forecast focus, with attention turning to a pattern change and the resulting effects of a seasonally strong cold front this weekend. Similar conditions with slightly warmer temperatures are expected tomorrow.
813 PM EDT WED AUG 10 2016 Upper ridge to the east through the week.
A weak low pressure system will bring isolated thunderstorms to northern and east central nevada this afternoon and evening. high pressure will bring dry weather with a warming trend Thursday through the weekend. a ridge will build back overhead with warming and drying. A weak low pressure system will bring isolated thunderstorms to northern and east central nevada this afternoon and evening. high pressure will bring dry weather with a warming trend Thursday through the weekend.
912 PM EDT Wed Aug 10 2016 High pressure will remain over the western Atlantic through the weekend.
A high pressure ridge will persist across southern Florida overnight.
The closed low is currently spinning in southern Saskatchewan and spreading mid-level clouds into the area. This breeze will become northwesterly and increase on Thursday as the trough moves farther east into Manitoba. Templer Previous Discussion - An upper trough centered over southeast Alberta this afternoon continues to drift east-northeast. But as the upper low traverses southern Sask tonight, instability should increase a bit and increase the shower threat from the NW.
/issued 325 PM CDT WED AUG 10 2016/ (Tonight and Thursday) Upper level high has shifted farther east and is not dominating the weather pattern quite as much as it has in recent days. Convection has developed along the edge of the ridge, extending from the Trans Pecos north into the Permian Basin and then into the northwest Big Country.
Models continue their previous trend of drifting the low to the west and northwest through the next few days, before getting absorbed into a frontal system. Large cyclonic spin covers much of central Alabama thanks to broad low pressure.
/issued 255 PM CDT WED AUG 10 2016/ A tropical low pressure system over southern Alabama today will lift slowly west northwest through the end of the week.
1049 PM MDT WED AUG 10 2016 Water vapor imagery shows an upper low straddling the Montana/Canadian border with southwest flow continuing across the nrn Plains. shows low pressure centered across the Badlands along a stationary frontal boundary. Cooler air will filter into the rest of the CWA tonight into Thu morning. The upper low will slide eastward across srn Canada just north of ND Thu morning. As the base of the trough approaches the CWA. Cooler temps are expected with highs in the upper 70s to upper 80s.
A gradual warming trend is expected as high pressure builds over the region. A weak upper level trough continues over the area. Temperatures were slightly cooler than yesterday but in general are close to normal values. Temperatures will start to warm up the next few days as an upper level ridge builds off the coast.
With the low shear values these storms are not expected to be severe, but could have some downburst potential and localized heavy rain with PWAT values near 2" and no real steering flow. This convection will slowly start to dissipate in the late morning as the low level jet weakens over the area. This added precipitation and cloud coverage will keep the northern counties of the CWA slightly cooler than the rest of the area. The low level jet Wednesday night into Thursday will also bring a moderate push of low level warm air advection into the area. The thermal ridge of higher 850hPa temperatures will sit over NW Missouri adding 2-3C warmer temperatures Thursday. Dewpoint values will stay in the low to mid 70s so heat index values will be 105-107 over most of the CWA.
911 PM EDT WED AUG 10 2016 High pressure will linger off the Mid Atlantic coast through the weekend.
745 PM EDT WED AUG 10 2016 An area of low pressure will drift westward along the Gulf Coast over the next few days allowing Bermuda high pressure to become more dominate in the forecast area. The forecast area remains positioned between the upper low along the Gulf coast and the upper ridge axis extending through the Delmarva region. The upper low along the Gulf coast weakens near Mobile and New Orleans while the upper ridge over the western Atlantic builds westward on Thursday. Forecast instability is also weak with weak shear because of upper ridging.
640 PM CDT Wed Aug 10 2016 The upper ridge was continuing its influence over most of Southeast Texas at 23Z and this system should keep the chances for showers or thunderstorms low.
(Issued 852 PM CDT WED AUG 10 2016) Upper low along the Gulf coast will keep most of the pcpn in srn LA, MS and AL tonight. Nrn AL may have a few light shra wrapping arnd the upper low but for the most part, pcpn should be isolated and light.
542 PM MDT WED AUG 10 2016 Water vapor imagery shows an upper low straddling the Montana/Canadian border with southwest flow continuing across the nrn Plains. shows low pressure centered across the Badlands along a stationary frontal boundary. Cooler air will filter into the rest of the CWA tonight into Thu morning. The upper low will slide eastward across srn Canada just north of ND Thu morning. As the base of the trough approaches the CWA. Cooler temps are expected with highs in the upper 70s to upper 80s.
a lee side trough of low pressure is anchored across eastern Colorado. On Thursday the eastern Colorado boundary will slide east into far western Kansas as a cold front drops south into northwest Kansas by the mid to late afternoon. Based on the 2-3C warm up in the 850mb temperatures ahead of the cold front Thursday afternoon the previous forecast still looks on track with highs climbing back into the mid to upper 90s. At this time did favor slightly cooler temperatures in areas where more afternoon cloud cover is anticipated.
843 PM EDT WED AUG 10 2016 Upper ridge to the east through the week.
Chattanooga Airport, TN 75 92 75 92 / 30 40 20 40 Knoxville McGhee Tyson Airport, TN 73 92 73 92 / 20 40 20 40 Oak Ridge, TN 73 93 73 92 / 20 40 20 40 Tri Cities Airport, TN 70 90 70 90 / 20 40 20 40.
852 PM PDT WED AUG 10 2016 Fair and seasonal weather will continue through Thursday as a trough of low pressure moves through the West.
A ridge of high pressure centered over the Atlantic will stretch across Florida and into the eastern Gulf of Mexico and will hold through the upcoming weekend.
948 PM EDT WED AUG 10 2016 High pressure will linger off the Mid Atlantic coast through the weekend.
Regardless, given the boundary layer moisture content, amount of Cape below the freezing level, and potential for storms oriented along the propagation vector yielding nearly stationary echoes, have kept Flash Flood Watch valid into the evening hours though admittedly the coverage of potential flooding will now be more isolated.
Convection pretty much died off in Middle Tennessee as mid level ridging is nosing in from North Carolina and Atlantic.
646 PM CDT WED AUG 10 2016 The hot and very humid weather will continue through Thursday as the upper level ridge remains the dominant weather feature.
The H5 ridge at 594 decameters remains in place overhead, continuing compressional heating areawide. Most moisture remains limited to the lower atmosphere, and dry air aloft is not mixing down during the afternoon. Low level moisture is there, but drier air aloft and general stability provided by upper ridging will again preclude all but the most minor sea breeze pop up showers.
Flow through the delta has been slightly stronger tonight and temperatures have been running a little cooler over the interior. The trough of low pressure will begin to lift to the northeast on Thursday and temperatures should warm by several degrees across the interior.
Rain/storm chances look like they will increase over the weekend with the approach of a cold front.
A weak low pressure system will bring isolated thunderstorms to northern and east central nevada this afternoon and evening. high pressure will bring dry weather with a warming trend Thursday through the weekend. A weak low pressure system will bring isolated thunderstorms to northern and east central nevada this afternoon and evening. high pressure will bring dry weather with a warming trend Thursday through the weekend. a ridge will build back overhead with warming and drying. A weak low pressure system will bring isolated thunderstorms to northern and east central nevada this afternoon and evening. high pressure will bring dry weather with a warming trend Thursday through the weekend.
1028 PM EDT WED AUG 10 2016 An area of low pressure will drift westward along the Gulf Coast over the next few days allowing Bermuda high pressure to become more dominate in the forecast area. The forecast area remains positioned between the upper low along the Gulf coast and the upper ridge axis extending through the Delmarva region. The upper low along the Gulf coast weakens near Mobile and New Orleans while the upper ridge over the western Atlantic builds westward on Thursday. Forecast instability is also weak with weak shear because of upper ridging.
Low level moisture is there, but drier air aloft and general stability provided by upper ridging will again preclude all but the most minor sea breeze pop up showers.
(prev disc) Light southeast/east flow will prevail through the overnight as region remains sandwiched in between weak low pressure over the northern Gulf of Mexico and high pressure centered off the Carolina coast.
As the storm system moving into the lower Mississippi Valley begins to push slightly higher moisture levels into SE Texas, better chances for showers and thunderstorms are expected on Thursday. a strong and expansive upper level ridge extended from AZ to NC with the center of the ridge over W MS. maybe a degree or two cooler with a bit more cloud cover but see no reason why heat index values won't exceed 108 degrees again.
a strong and expansive upper level ridge extended from AZ to NC with the center of the ridge over W MS. maybe a degree or two cooler with a bit more cloud cover but see no reason why heat index values won't exceed 108 degrees again. /ISSUED / The upper ridge was continuing its influence over most of Southeast Texas at 23Z and this system should keep the chances for showers or thunderstorms low.
However, in its wake PWATs in excess of 2 inches remain along with relatively high freezing levels. However, this too will weaken as warm mid- levels and diurnal stabilization take hold as a short wave trough transitions eastward. The Southern CONUS upper high is progged to be shunted east by the weekend as an upper trough advances out of the West.
737 PM CDT WED AUG 10 2016 The 00z sounding continues to show a veering wind pattern throughout the atmospheric column which is indicative of the broad low pressure system currently impacting the Gulf South. Lapse rates are basically moist adiabatic, and freezing levels remain very high at around 17k feet. The sounding is basically saturated throughout and this is easily shown by the high precipitable water value of 2. Temperatures were indicated from model consensus, which is cooler than normal due to extensive rainfall and cloud cover next couple of days. Frontal zone eventually merges and lifts the system northward but Bermuda ridge appears to win out in keeping the front to the west of the forecast area and dissipating.
Residual moisture and instability will favor primary development of thunderstorms over the high terrain in Mohave County.
1017 PM EDT WED AUG 10 2016 An area of low pressure will drift westward along the Gulf Coast over the next few days allowing Bermuda high pressure to become more dominate in the forecast area. The forecast area remains positioned between the upper low along the Gulf coast and the upper ridge axis extending through the Delmarva region. The upper low along the Gulf coast weakens near Mobile and New Orleans while the upper ridge over the western Atlantic builds westward on Thursday. Forecast instability is also weak with weak shear because of upper ridging.
A moist southwest flow over the region tonight will give way to a dry northwest flow on Thursday as an upper trough crosses the area.
Very muggy dewpoints in the low to mid 70s this evening will support patchy fog again tonight, which is covered already in the forecast. Southerly flow at the surface helping to advect moisture into the region and dewpoints have climbed into the lower 70s across the area. Showers and thunderstorms will then spread into central IL from the northwest Thursday night as a cold front approaches from the northwest.
226 PM EDT FRI MAY 13 2016 A cold front is moving onto the Eastern Shore.
307 PM CDT FRI MAY 13 2016 Focus this evening will be on convection developing along the cold front currently from NE KS into far NW OK. Cooler and drier air will overspread the region behind the cold front.
1201 PM CDT FRI MAY 13 2016 High pressure is sliding south across the Southern Plains early this morning, with rather cool and decidedly less humid conditions over the area. Slightly higher dewpoints will begin to advect in across Kansas and northern Missouri by afternoon, resulting in a ribbon of CAPE ahead of an approaching cold front. That front will then usher in a much cooler airmass for the overnight hours tonight, with lows likely falling into the 40s by Saturday morning.
204 PM EDT FRI MAY 13 2016 A reinforcing cold front crosses Saturday morning.
low to mid level cloud decks will linger into the evening before dissolving in the stable dry air overnight, aside from some clouds hugging the higher terrain thanks to upslope easterly flow. a short wave ridge will be over our area leading to a slight warm up ahead of an upper trough moving into oregon.
1125 AM MDT FRI MAY 13 2016 Another unseasonably warm day expected today due in part to ridging aloft and westerly downslope flow at the surface. upper trof dropping through the Dakotas and upper midwest will drive a surface front southward through the plains today. Should start to see stratus develop along the lower eastern slopes of the southeast Mts and I-25 corridor around 06z. This will mark the beginning of a trend towards cooler and eventually wetter weather into the longer range portions of the forecast. meteorological trend will be towards wetter and cooler conditions during the balance of the longer term with primary issues being temperatures.
250 PM EDT FRI MAY 13 2016 A cold front will push east of the commonwealth by evening. An event stronger cold front is forecast to push east through the state during the late morning and afternoon hours on saturday. but with a risk of frost and freezing temperatures especially across northern Pennsylvania. Showers are winding down over the lower susq river valley. to the lower 70s throughout much of the Susquehanna Valley). clearing skies with a decreasing westerly breeze will occur tonight as a ridge of high pressure noses ne into the state from the Tennessee Valley. to the low 50s in the southeast. but vigorous upper trof and strong cold front will slice across central pa late Sat morning through mid Saturday afternoon.
Forecast still on track with upper trough moving in tonight.
358 PM EDT FRI MAY 13 2016 A cold front will drop rapidly southeast from the upper midwest and cross our area tonight.
Visible satellite shows another boundary, possible a stalled outflow boundary or pre-frontal trough, stretching from New Braunfels to Angleton.
311 PM EDT FRI MAY 13 2016 A cold front will push east of the commonwealth by evening. An event stronger cold front is forecast to push east through the state during the late morning and afternoon hours on saturday. but with a risk of frost and freezing temperatures especially across northern Pennsylvania. Showers are winding down over the lower susq river valley. to the lower 70s throughout much of the Susquehanna Valley). clearing skies with a decreasing westerly breeze will occur tonight as a ridge of high pressure noses ne into the state from the Tennessee Valley. to the low 50s in the southeast. but vigorous upper trof and strong cold front will slice across central pa late Sat morning through mid Saturday afternoon.
351 PM CDT FRI MAY 13 2016 The main concern in the short term will be the freezing temperatures tonight along with some frost again Saturday night. A large upper level low pressure area off to our northeast in Canada will continue to funnel colder and drier air into our region through the entire short term.
302 PM CDT FRI MAY 13 2016 Mid level ridge axis will remain to our west with the area underneath northwesterly flow aloft. Surging high pressure to the north will help swing the winds back to the southeast beginning tonight. HRRR shows isolated showers with the seabreeze shifting into the upper Valley but in reality the seabreeze is weak and holding in the lower Valley. models continue to indicate a weak h5 ridge passing overhead during the afternoon, with a hint of an embedded impulse.
245 PM MST FRI MAY 13 2016 Strong high pressure aloft will bring well above average temperatures Saturday.
However, a dry cold front will move through the central california interior Saturday accompanied and followed by gusty winds on the west side of the San Joaquin Valley and in the Kern County mountains and desert this weekend.
317 PM EDT FRI MAY 13 2016 A cold front will cross the region tonight with showers ending by dawn.
619 PM EDT FRI MAY 13 2016 A cold front will return showers to the forecast early on Saturday with much cooler and unsettled weather expected for the weekend. Building high pressure is expected to maintain dry weather this evening as diurnal cu/stratocu dissipates. A cold front is expected to approach late tonight with increasing shower chances. Maintained categorical pops with the passage of a cold front early Saturday morning, with sufficient deep layer moisture and ascent.
246 PM EDT FRI MAY 13 2016 A reinforcing cold front crosses Saturday morning.
vfr decks to become sct-bkn this evening and overnight with the approach of a cold front. Could see -shra/-tsra develop along and ahead of the cold front tomorrow mid-morning particularly across ktxk, ktyr and kggg. Temperatures this afternoon to climb into the low to mid 80s.
Flight conditions will deteriorate late this afternoon through tonight as a cold front moves into the area.
An upper low pressure system is expected to begin approaching Riggins, Grangeville and Orofino Saturday afternoon and support an increasingly moist and unstable atmosphere.
1127 AM MDT FRI MAY 13 2016 Cold front has made it as far south as KGLD and KCBK and will continue to move south rapidly today. cold front quickly moves south across the forecast area before noon bringing north winds gusting to around 30 mph and slowly decreasing temperatures from north to south through the day. For Saturday night the mid levels of the atmosphere moisten up after midnight while the lower levels remain moist through the night.
134 PM EDT FRI MAY 13 2016 A cold front crossing the Midlands this afternoon will move off the coast this evening. High pressure will briefly build into the region overnight bringing a cooler and drier air. A dry front will move through the region Saturday evening with additional cooler air behind the front.
423 PM EDT FRI MAY 13 2016 A secondary cold front will move through the region tonight, bringing a chance of rain showers. An upper level low will settle into the Great Lakes this weekend, providing cooler temperatures and a lingering chance of a shower on Saturday. cooler air will begin to work in behind the rain, dropping temperatures into the mid 40s in the nw. Counties in the se will stay in the lower 50s.
149 PM EDT FRI MAY 13 2016 Drier and cooler weather will advect into the region today, in the wake of a cold front. Another cold front will move through Saturday morning, bringing a chance of rain. An upper level low will settle into the Great Lakes this weekend, providing cooler temperatures and a lingering chance of a shower. digging h5 s/w will allow a sfc cold front to drop se thru iln/s fa early saturday. lows tonight continue close to normal, ranging from the mid 40s nw to the lower 50s se. Highs on sat will be about 15 degrees below normal, ranging from the lower 50s north to the upper 50s south. expect Clouds clouds to begin to break up allowing temps to drop to lows ranging from the upper 30s north to the lower 40s se.
140 PM EDT FRI MAY 13 2016 Aviation Another low pressure system will move in from the west and cause rain to redevelop this afternoon through tonight. The next low pressure system moving in from the west will bring rain showers by mid to late this afternoon which will become more widespread this evening aided by mid level frontogenetical forcing. It will be unseasonably cool Saturday night with min temps mainly in the upper 20's north of I-96 to the lower 30's near to south of I-96.
138 PM EDT FRI MAY 13 2016 A strong cold front will move across the forecast area tonight ushering in much below normal conditions. A punch of drier air has spread over the area behind the cold front with the last of the sprinkles ending in nw pa. On average most places should be partly sunny today but highs will be about 10 degrees cooler than yesterday. A weak upper trough pushing across lake erie could trigger an isolated shra in the snowbelt this afternoon. Models in good agreement dropping arctic cold front. At the upper levels deep upper trough digs over the NERN states. Temps will hover in the lower to mid 50s all day.
A cold front will sweep through the area later tonight. and cooler air moves into the region for the weekend. with better chances coming for the latter portion of the weekend as the boundary returns north as a warm front.
305 PM EDT FRI MAY 13 2016 18z SFC analysis shows high pressure building deeper into Kentucky. The high has also helped to scattered out the cu and do expect the remaining ones to mostly dissipate around sunset. They all depict heights lowering tonight as a broad Great Lakes closed low pivots southeast sending energy and another trough axis into the Ohio Valley and Kentucky.