Aikyam-Lab/Synoptic-Bench huggingface dataset:
811 PM EDT Tue Oct 11 2016 A large area of high pressure will cover the eastern United States through mid-week. A dry cold front will push through the region late in the week, followed by another round of high pressure for the weekend. Overnight temperatures look to be a bit warmer than what was observed this morning owing to a slightly tighter pressure gradient and the possibility of some stratocumulus moving onshore later tonight in coastal areas. Lows will range from the lower 50s far inland to the upper 60s along the Georgia beaches where temperatures will be moderated a bit by the enhanced onshore flow. Dry high pressure centered over the New England coast will continue to wedge down the eastern seaboard through the middle of the week.
920 PM EDT TUE OCT 11 2016 Dry and cool high pressure will ridge southward and into the forecast area through Wednesday.
1003 PM EDT Tue Oct 11 2016 High pressure over New England will bring a southerly flow and warmer air to the area on Wednesday ahead of a cold front.
A deep layer dry airmass remains in place across the region this evening as upper level high pressure continues to ridge across the Gulf of Mexico and into the southeastern states.
810 PM EDT TUE OCT 11 2016 A ridge of high pressure extending southwest into the Carolinas will persist through Wednesday.
222 AM MST Tue Jan 17 2017 09z surface analysis had low over KPIA with weak high over the CWA and lee trough from central MT into central CO. Some CI spilling over ridge into the CWA.
Stretched deformation area between that northern IL low and trough pushing southeast through MN was producing a band of wintry mix precipitation from southeast MN into northern WI. quite an icy mess left over across the area from freezing rain. Temperatures across the area as of 2 am were in the lower/middle 30s. High pressure builds in tonight with stratus diminishing from west to east.
The area of showers has made little progress to the east but should begin to see that closer to daybreak as the first trough pushes more to the east. Looks like the first batch of precipitation should move through mid-morning as the first trough pushes off to the east. Precipitation should move in again ahead of the front later this afternoon and evening as the second trough passes just to the north. The cold front will be approaching the mountains late in the Short-Term forecast with cooler air moving into the Plateau and Southwest VA. The cold air advection behind the system is not overly impressive and lows behind the front will only drop down into the low to mid 40s across the Plateau and Southwest VA.
An upper level trough, located around Baja California at 00z Tuesday. Over the central United states a 700mb to 500mb deformation zone across western Kansas will move very little early in the day but as a northern upper level disturbance moves into the northern Mississippi Valley early this evening and the southwest United States developing upper low begins to approach the southern Rockies this deformation zone will start to lift northward towards the Nebraska border.
1235 AM EST Tue Jan 17 2017 A warm front will lift north across the area bringing rain tonight and Tuesday.
VFR conditions will prevail until a cold front arrives late tonight/early Tuesday morning, bringing a bout of stratus/fog. This could happen sooner if the upper trough speeds up. /issued 202 PM CST Mon Jan 16 2017/ The upper low that brought the rain to the area has moved off. Now a secondary trough digging across the 4 corners region will develop a cut off low along the US/Mex border tomorrow that will wander northward.
329 AM EST Tue Jan 17 2017 Warm frontal boundary lifts through early this morning. Cold front Tuesday night. Several areas of precipitation expected through the near term as a warm front moves through early this morning, followed by a cold front tonight. In the wake of the warm front today, temperatures will be unseasonably warm with 60s for most locations across the lowlands. As the cold front crosses to the east late this evening and tonight, temperatures will begin to fall.
The cold front continues to slowly move east across AR, with a west wind and a bit drier and cooler airmass behind it.
329 AM CST Tue Jan 17 2017 08z/2am surface analysis shows 1008mb low near Chicago, with cold front extending southward along the I-57 corridor. to the lower 50s near the Indiana border. Lows tonight will generally be in the lower to middle 30s.
A mid to upper level ridge across the southeastern Gulf of Mexico and Southern Florida will weaken slowly over the next couple of days. At the surface, a broad area of high pressure is currently centered near the mid-Atlantic coast. This high pressure will settle southward over the next couple of days, with an extension across South Florida and the Keys into the weekend.
Synoptic Setup:short term begins with a large ridge nosing in over California and Oregon running over the intermountain west and spilling over the Montana Front range where it is forming a chinook and finally cresting over Manitoba and The Dakotas. Farther west a large trough is forming over the northeast Pacific behind the ridge.
There may still be some light freezing rain mixed in with the rain across northern portions of the forecast area, where air and pavement temperatures are still near freezing. The pavement temperatures are still near freezing across most of the area, except perhaps the far southeast counties. Temperatures will be in the mid to upper 30s, with pavement temperatures rising above freezing, so not expecting any issues with icing this afternoon.
314 AM EST Tue Jan 17 2017 A warm front will lift north across the area with rain expected today.
348 AM EST Tue Jan 17 2017 Water vapor analysis reveals a broad trough across the SW US and into Mexico with several notable perturbations rotating within. with center of ridge across the Yucatan and quasi- zonal to SW flow across the SE. Will see wedge front retreat while the cold front pushes south and east during the short term. Rain chances will be confined to mainly north Georgia today and will increase as the day wears on with aforementioned cold front moving towards the state. Overnight Tuesday the cold front will push through north Georgia.
Ridge tops, like the Prairie Coteau and Leola Hills, should warm into the upper 20s or warmer today.
1220 AM CST Tue Jan 17 2017 For the 17/06Z terminal forecast most sites will be affected by a cold front moving across SW AR, NW LA, and E and NE TX resulting in a wide band of showers and at times isolated thunderstorms. In and near the boundary MVFR flight categories will prevail with winds shifting from Southwest to West 5-10 knots, followed by a move to more Northwest winds in wake of the cold front. Since the cold front will be slow to move across the region, expecting MVFR/IFR flight categories to prevail into the afternoon Tuesday.
/issued 800 PM EST Mon Jan 16 2017/ Deep layered ridging over the region will maintain mild and dry conditions across the entire forecast area the remainder of tonight.
948 PM MST Mon Jan 16 2017 Warm air advection will increase aloft across the area tonight and at the surface on Tuesday as an upper ridge builds over the region.
Area radars showed the main band of showers and thunderstorms, out ahead of a saggy, baggy cold front, was spreading across western parts of the Mid- State this evening.
Southerly winds ahead of an approaching cold front should keep fog from forming tonight.
Some stratus will likely stick around in northern Wisconsin after the precipitation ends, but as broad ridging develops at mid and upper levels across the Great Plains into the upper Mississippi River Valley clearing should mainly prevail.
Currently we find ourselves under southwest winds aloft as a trough extends from the Panhandles to the Baja Peninsula. This trough is expected to close off as it begins 48 hour trip across the Panhandles. Given the position of this low we should warm into the upper 40s and lower 50s. As the low moves into southern Arizona and New Mexico this evening, we could see some shower activity move northward into the southern Texas Panhandle. The southeastern Texas Panhandles will have the highest chance to see these showers later Tonight, and our temperatures in the lower levels of the atmosphere will also be warm enough to keep precip in the liquid category.
314 AM EST Tue Jan 17 2017 Rain showers with areas of fog and possibly a rumble of thunder will continue early this morning as low pressure tracks into the lower Great Lakes.
At the surface, high pressure has built into western Nebraska overnight. Looking at the latest MAV and MET guidance, high temperatures in the lower to middle 40s are more in order for this afternoon. With H85 temps ranging from 3-5C this afternoon, the lower to middle 40s look plausible.
High pressure aloft will settle over the Great Basin for the first half of the week. A positively tilted mid level ridge extending from the CA coast inland across the northern Great Basin and into the northern Rockies will maintain dry and stable conditions across the forecast area through Tuesday.
123 AM EST Tue Jan 17 2017 Warm front will continue to push northward this evening. A cold front will move through on Tuesday.
1107 PM EST Mon Jan 16 2017 A weak cold front will then cross the region late tonight. High pressure is expected to build back across the region on Tuesday.
333 AM EST Tue Jan 17 2017 Moisture associated with low pressure and a cold front will affect the area today.
103 AM EST Tue Jan 17 2017 Warm frontal boundary lifts through early this morning. Cold front Tuesday night. Several areas of precipitation expected through the near term as a warm front moves through early this morning, followed by a cold front tonight. In the wake of the warm front today, temperatures will be unseasonably warm with 60s for most locations across the lowlands. As the cold front crosses to the east late this evening and tonight, temperatures will begin to fall. Cold front crosses Tuesday night, with showers diminishing in its wake. Any thunderstorms ahead of the cold front should diminish prior to the start of the period, as driving upper level short wave trough lifts out into the northeastern U. , actually outrunning the surface cold front.
252 AM EST Tue Jan 17 2017 A stationary front over the Carolinas will move north as a warm front today.
312 AM EST Tue Jan 17 2017 Low pressure will move northeast through the eastern Great Lakes today and up the St.
240 AM EST Tue Jan 17 2017 A weak cold front will cross the state this morning. High pressure is expected to build across the region on Tuesday.
1124 PM CST Mon Jan 16 2017 There is just enough drying occurring in the low levels that widespread fog development is not anticipated. As the system draws in moisture from two separate sources, Pacific and Gulf, a weak warm front will slowly lift north through the day tomorrow arriving across the southern half of our CWA by early afternoon and spreading over our entire area by tomorrow evening.
As a weakening trough pushes into the Ohio River Valley today, mid-level ridging will build over the Northern Plains. Meanwhile further south, a deepening upper-level trough is noted across the Baja Peninsula.
1204 AM EST Tue Jan 17 2017 Low pressure will track out of the Plains towards southern Lake Michigan by Tuesday morning lifting a warm front north across the area. The low will drift towards the eastern Great Lakes by Tuesday evening with a weak cold front shifting east behind it.
721 AM EDT TUE AUG 23 2016 Upper air pattern consists of a closed 500 mb low over southern Alberta with a trough in New England and a 500 mb ridge across the sern U.
758 AM EDT Tue Aug 23 2016 High pressure will provide dry weather through mid week before shower chances return with a late week cold front. High pressure is expected to maintain dry conditions with very little cloud coverage today. Ridging will continue to transition over the area through the period with the ridge axis progged to be east of the forecast area by Wednesday afternoon. Overnight lows will be warmer as a result.
High Pressure will extend across the region through the week. subtropical ridging to our south begins to extend/amplify north the area on Tuesday. Lows a few degrees warmer than tonight, generally in the lower to mid 60s. Mid-level ridging will strengthen, centered over the southern mid- Atlantic states (NC/VA) mid to late week.
Some storms may fire along the cold front late this afternoon near the Dakotas/MN border, but large scale dynamics don't favor widespread activity. Picking up the forecast at 12Z tomorrow, a cold front will be draped from north to south through the middle of MN with lingering precipitation in eastern MN and west central WI.
High pressure will remain ensconced over the north central Gulf in the short term, supporting typical southeast quadrant onshore winds the next 24 hours. VFR conditions expected to continue through the next 24 hours as a 500mb ridge builds overhead and provides subsidence across deep south Texas. This activity is due some lingering moisture and weak instability off the lower Texas coast. Water vapor imagery indicates an east to west elongated 500 mb ridge over the northern Gulf of Mexico this morning. This mid to upper level ridge will continue to build over the region through the forecast period.
1010 AM CDT TUE AUG 23 2016 As of 15 UTC, the surface cold front was located from the Turtle Mountains through Lake Oahe and will continue to propagate east through the day. A breezy and dry day in the dry slot of the upper low across Saskatchewan remains on track. A cold front continues to push into central North Dakota this morning. The cold front is expected to shift into the southern James River Valley 18z-21z today. Quite the density gradient with dewpoints in the west mostly in the 30s, while along and east of the cold front dewpoints are in the upper 60s. Breezy and cooler conditions expected behind the cold front today with highs in the upper 70s west to mid 80s in the James River Valley.
1200 PM EDT TUE AUG 23 2016 High pressure will build along the east coast today. High pressure will move east of the region later Wednesday.
Strong mid level ridge remains across north Florida with warm mid level temps around -5 C with mid level dry air from h7-h5.
A ridge pattern should keep flight conditions vfr through most of the forecast today although there will be a few cumulus clouds around; mainly at cha and tys.
620 AM CDT TUE AUG 23 2016 At 3 AM, the short wave trough that brought the scattered showers and storms to northern Wisconsin on Tuesday afternoon and evening was moving east across eastern Upper and northern Lower Michigan. This is due to this system being picked up by a northern stream short wave trough. As a result, there is only scattered convection along the trough as it moves through the area.
847 AM PDT TUE AUG 23 2016 Weak high pressure aloft off the West Coast will bring slow warming through Wednesday.
648 AM MDT TUE AUG 23 2016 Moisture will continue to increase from the southwest today as an upper level low pressure system currently spinning over Arizona this morning, moves into the Four Corners region this afternoon and across southwest Colorado this evening. Storms are expected to become more numerous across southeast Utah and southwest Colorado due to the deeper moisture and upper low, generating enough forcing to get some stronger storms going with potential for heavy rain. Most storm activity is expected to end by midnight as a drier westerly flow moves in behind the upper low pressure trough. While a modest amount of moisture will remain over the area on Wednesday, a downturn in showers and thunderstorms is expected as Tue's trough moves east of the area. This will mainly focus on the higher terrain, especially along the Continental Divide.
Temperatures will remain cooler than normal with highs in the low to mid 80s lower elevations and in 70s in the mountains. Waiting for all of the current model runs to come in this morning, but looks like a slight chance for precipitation over the West Central Mountains of Idaho Wednesday afternoon as another weak upper level trough swings south over the region. Northwest flow aloft will continue through the short term as an upper level low moves east across southern Canada and a large upper level ridge builds off the Pacific NW coast. Moisture in the middle of a broad trough axis extending southwest from the low moving east across Canada will bring a slight chance for showers and thunderstorms to northeast Valley County Wednesday afternoon, but otherwise we will be too dry for precipitation.
644 AM CDT TUE AUG 23 2016 High pressure will move off to the east today, keeping southerly winds over the area. Temps will be a degree or two warmer than yesterday, while overnight lows will be warmer, only falling to around 70. Morning MCS activity will be lifting northeast on Wednesday as the upper trough moves eastward from Illinois.
1037 AM MDT TUE AUG 23 2016 Moisture will continue to increase from the southwest today as an upper level low pressure system currently spinning over Arizona this morning, moves into the Four Corners region this afternoon and across southwest Colorado this evening. Storms are expected to become more numerous across southeast Utah and southwest Colorado due to the deeper moisture and upper low, generating enough forcing to get some stronger storms going with potential for heavy rain. Most storm activity is expected to end by midnight as a drier westerly flow moves in behind the upper low pressure trough. While a modest amount of moisture will remain over the area on Wednesday, a downturn in showers and thunderstorms is expected as Tue's trough moves east of the area. This will mainly focus on the higher terrain, especially along the Continental Divide.
945 AM EDT Tue Aug 23 2016 High pressure will slide east across the region today, then reside along the Mid-Atlantic coast into Wednesday.
907 AM EDT TUE AUG 23 2016 High pressure will build along the east coast today. High pressure will move east of the region later Wednesday.
Lows tonight will be significantly warmer with the higher dewpoints advecting into the area.
A cold front positioned over the southeast Georgia waters early this morning will move slowly southward this morning. Wind speeds tonight may approach caution conditions in the offshore waters at times tonight, but confidence in sustained 15-20 knot wind speeds is higher for Wednesday and Wednesday night as strong high pressure off the New England coast expands southward and tightens our local pressure gradient.
/issued 453 AM EDT TUE AUG 23 2016/ A broad ridge at the upper levels extends across the Florida peninsula with a remnant frontal boundary just north of north Florida with a cold front extending eastward of that into the Atlantic waters. The upper level ridge will continue to maintain unseasonal warmer mid-level temperatures and will help to hamper convective potential today, but not completely.
921 AM EDT TUE AUG 23 2016 High pressure will move off the east coast Wednesday.
1013 AM EDT TUE AUG 23 2016 Fair and pleasant weather continues today before turning warmer and more humid through mid week.
1017 AM EDT TUE AUG 23 2016 High pressure shifts east today. Increasingly warmer and more humid air as the week progresses. before the next cold front approaches later in the week. ridging at the surface and aloft will continue to dominate through tonight with tranquil weather. So after early morning dense river valley fog under this high pressure. models indicate dry weather with high pressure will still hang on. Warm frontal boundary will move northeast through area Wednesday. with warmer temperatures.
810 AM MDT TUE AUG 23 2016 Already seeing wind gusts of 25 to 30 MPH across Converse County this morning with humidities in the low 20 percent range. Decided to add FWZ 301 into the Red Flag Warning as the cooler/moist air not going to move in until this evening. A weak front will push across the CWA this morning but the cooler air will lag behind the front so still on the warm side for today. Should see an increase in mainly high clouds today from the southwest as moisture around an upper low near Las Vegas gets advected northeastward.
Scattered to numerous showers and thunderstorms are expected today as an upper low moves across the region. Storm coverage will decrease Wednesday through the end of the week, with the the best chance continuing over the higher terrain. A well-defined upper low is located across northwest Arizona this morning and is forecast to head eastward through the day. The best lift with the low is occurring now across central Arizona including eastern Yavapai and Gila Counties where widespread rain and thunderstorms have developed. By later in the morning and through the afternoon, cooler than normal mid-level temperatures combined with modest daytime heating should produce another round of showers and thunderstorms.
Chattanooga Airport, TN 90 70 91 72 / 10 10 20 10 Knoxville McGhee Tyson Airport, TN 87 66 89 70 / 0 10 20 10 Oak Ridge, TN 87 66 89 70 / 0 10 20 10 Tri Cities Airport, TN 84 61 86 65 / 0 10 20 10.
Gilchrist Previous discussion: A cold front that move through Northeast Montana earlier tonight has triggered isolated showers over the forecast area. Upper low in southern Alberta early this morning will move across southern Saskatchewan today and tonight. Temperatures will be 15 to 20 degrees cooler than yesterday. On Wednesday, some moisture moves south into the forecast area as the upper low moves into southern Manitoba. Temperatures will remain cooler than normal with cloudy skies.
1023 AM EDT TUE AUG 23 2016 High pressure will remain centered just east of the region today, providing dry conditions. A warm front will move into the area on Wednesday, along with an increase in moisture.
/ISSUED / Southeast Texas remains on the western edge of an expansive upper level ridge spread across the Gulf Coast states this morning. Lower thunderstorm coverage is expected today than yesterday, however, as the upper ridge along the Gulf Coast builds farther west. Another warm day is expected Wednesday with highs again in the upper 80s to low 90s and even lower thunderstorm coverage than today as the upper ridge maintains its influence over the region.
402 AM PDT TUE AUG 23 2016 Scattered showers and thunderstorms can be expected over mainly the higher elevations of the Sierra this afternoon into this evening. Water Vapor images show an upper low has moved well east of the sierra. Temperatures will see a slight up trend through Wednesday as a ridge along the coast builds inland.
1052 AM EDT TUE AUG 23 2016 Cool high pressure will build into the area from the west through today. It will move off into the Atlantic on Wednesday, with warmer temperatures arriving on southwesterly winds.
A ridge of high pressure is centered across LA with disturbances rounding the western periphery. As seen on visible satellite and sfc obs, a MCV and a warm frontal feature is tracking across MS. JMS (Issued 622 AM CDT TUE AUG 23 2016) For 12Z TAFs: With a relatively strong area of high pressure in place over the mid/srn Atlantic Basin, VFR conds are generally xpcted through the TAF period.
1157 AM EDT TUE AUG 23 2016 High pressure will move off the east coast Wednesday.
The rather warm mid level temperatures may delay the develop of convection some which will therefore allow temperatures to warm into the lower to mid 90s, possible upper 90s at a few inland locations.
VFR conditions expected to continue through the next 24 hours as a 500mb ridge builds overhead and provides subsidence across deep south Texas. This activity is due some lingering moisture and weak instability off the lower Texas coast. Water vapor imagery indicates an east to west elongated 500 mb ridge over the northern Gulf of Mexico this morning. This mid to upper level ridge will continue to build over the region through the forecast period.
708 AM EDT Tue Aug 23 2016 High pressure will slide east across the region today, then reside along the Mid-Atlantic coast into Wednesday.